To Search this page simplypress CTRL FThere are 3,200+ entries here
From: |
This is not a comprehensive list and we do not claim the correctness or validity of any information on this page. It is for entertainment and pseudo-research only. Use at your own risk, We accept no liability in the complete or correctness herein. DYOR. This is not in any way, shape, form, or fashion any type of legal document. This is a random website that is here to help guide people. This list is NOT up to date, nor will it ever be. DO NOT rely on or cite this source in a runsheet or any other legal instrument.
THIS IS NOT A LEGAL DOCUMENT OR ACCOUNTING OF TITLE. DYOR.
To: |
| 101 Energy Corporation | Same (Subsid: Crawley Petroleum Corporation) |
| 1400 Corp. | Conquest Exploration Company |
| 201 Corporation | Centurion Corporation |
| 3300 Corp. | Conquest Exploration Company |
| 3DX Technologies Inc. (Houston) | Esenjay Exploration Inc. |
| 3Tec Energy Corp. | Same (Houston) |
| 906 Olive Corporation | Same (Affil: Meridian Oil, Inc.) |
| A | |
| A & J Oil Company | Thomas, Nelson R. |
| A & K Petroleum Company | Kerr-McGee Corporation |
| A. F. D. Capital Group Inc. | Same |
| A-1 Bit & Tool | Same (Subsid: Homco International, Inc. |
| A-2 Acquisitions Partnerships (1996 & 1997) | Dissolved into (A-2 Resources Corp.) |
| A-2 Development and Production Company | Same (Subsid: A-2 Resources Corp.) |
| A-2 Energy and Exploration Partners, LLC | Same (Subsid: A-2 Resources Corp.) |
| A-2 Exploration Corp. | Same (Subsid: A-2 Resources Corp.) |
| AA Development Corporation | AA Energy Corporation |
| AA Energy Corporation | Same |
| AA Minerals Corporation | Supron Energy Corporation |
| Aaron Oil Corporation | Altmark Energy Inc. |
| Abaca Oil Company | Mapco Production Company |
| Abacan Resource Corp. | Same |
| Abbeville Operating Corp. | Bintliff, D.C. |
| Aberdeen American Petroleum Company, Inc. | Same |
| Aberdeen Oil & Gas Corporation | Aberdeen Petroleum Corporation |
| Aberdeen Petroleum Corporation | Adobe Royalty, Inc. |
| Abney Oil Co. | P & O Falco, Inc. |
| Abraxus Petroleum Corporation | Same |
| Acacia Natural Gas Corporation | Same (Subsid: DevonEnergy Corp) |
| Acadi Energy Company | Oxoco, Inc. |
| Acadian Gas GP | Tejas Gas |
| Access Energy Corp. | Enron Gas Service Corp. |
| Acquisition – VI Corporation | Louis Dreyfus Natural Gas Corp. |
| Ada Belle Oil Company | Penn-Virginia Resources Corp. |
| ADA Resources Corp. | Adams Resources & Energy, Inc. |
| Adams Resources & Energy, Inc. | Same |
| Addax Petroleum Corporation | Same |
| Addington Brothers Mining Co. | Ashland Oil, Inc. |
| Adena Exploration | Dissolved (See notes in back) |
| Adobe Acquisition Corp. | High Plains Oil Corporation |
| Adobe Oil and Gas Corp. | Adobe Royalty, Inc. |
| Adobe Resources Corporation | Santa Fe Energy Resources, Inc. |
| Adobe Royalty, Inc. | Adobe Resources Corporation |
| AEC Gas Company | Encana Corp |
| AEC Gulf of Mexico Inc. | Encana Corp |
| AEC Oil and Gas (USA) Inc. | Encana Corp |
| AETNA Oil Co. | Ashland Oil & Refining Company |
| Agate Petroleum Inc. (N. Dakota Properties) | Nance Petroleum Corporation |
| Agate Petroleum, Inc. | St. Mary Land & Exploration Company (all US properties except N. Dakota) |
| AGM Corp. | Diamond Shamrock, Inc. |
| Aikman Brothers, Inc. | Same |
| Aikman Oil Corp. | Aikman Brothers, Inc. |
| Akin, Matthew | Same |
| Aladdin Oil Corp. | Same (Los Angeles) |
| Alagasco Energy Company, Inc. | Taurus Exploration, Inc. |
| Alamo Inc. | Columbia Gas System, Inc. |
| Alamo Oil & Gas LTD-I | Same (Affil: Torch Energy Corporation) |
| Alamo Oil & Gas LTD-II | Same (Affil: Torch Energy Corporation) |
| Alamo Petroleum, Inc. | Equitable Petroleum Corp. |
| Alanman Energy, Inc. | Same |
| Alanmar Oil Company | Alanmar Energy, Inc. |
| Alaska Interstate Company | Union Texas Petroleum Corp. |
| Albantu Oil & Gas Corporation | Socony Mobil Oil Company, Inc. |
| Alberta Energy Company, Ltd. | EnCana Oil & Gas, Ltd. |
| ALCO Oil & Gas Corp. | Ladd Petroleum Corp. |
| ALCOA, Inc. | Same |
| Alder Oil Company | ESCO, Inc. |
| ALECO, Inc. | Same |
| Alene Oil Company | Tenkay Resources, Inc. |
| Alexander Energy Corporation | National Energy Group, Inc. (Dallas) |
| Alf Corporation (USA) | Same |
| Alf Energy Companies | Alf Corporation (USA) |
| Alf Oil Company | Alf Energy Companies |
| Alfonso Production Company | Cash Reserve Investments, Ltd. |
| Allegro Petroleum, Inc. | North Star Resources, Ltd. |
| Allen Oil Company | Ladd Petroleum Corp. |
| Allen Oil Tools, Inc. | Kencope Energy Co. |
| Alliance Drilling Company | Same |
| Alliance Exploration Corporation | South Hampton Mineral Corp. |
| Alliance Operating, Inc. | Gulfstream Resources, Inc. |
| Alliance Resources (USA) Inc. | Same (Subsid: Alliance Resources PLC) |
| Allied Ashland Oil Company | Ashland Oil Company |
| Allied Chemical Corporation | Union Texas Natural Gas Corp. |
| Allied Consolidated Energy Inc. | Allied Oil & Gas Corp. |
| Allied Materials Corp. | Entex Petroleum, Inc. |
| Allied Oil & Gas Corp. | Same (Houston) |
| Allis-Chalmers Energy, Inc. | Same (Houston) |
| Alminex Ltd. | Mobil Oil Corporation |
| ALN Resources Corp. | American Natural Energy Corp. |
| Alpha – Omega, Inc. | Omega Corporation |
| Alpha Energy Corp. | Liquidated |
| Alta Energy Corp. | Devon Energy Corp. |
| Altair Oil & Gas Company | Mesa Petroleum Company |
| Alterio Resources Ltd. | Paragon Petroleum Corp. |
| Altex Energy Corp. | Altex Industries |
| Altex Industries | Same |
| Altmark Energy Inc. | Same |
| Altura Energy, Ltd. | Same |
| Aluminum Company of America | ALCOA, Inc. |
| Amacan Resources Corp. | Spire International Corp. |
| Amalgamated Bonanza Petroleum Co. | Chevron USA, Inc. |
| Amarex, Inc. | Temex Energy, Inc. |
| Amarillo Minerals, Inc. | Pioneer Nuclear, Inc. |
| Amarillo Oil Company | Pioneer Production Corp. |
| Amax Oil & Gas, Inc. | Universal Resources Corp. |
| Amax Petroleum Corp. | CRA, Inc. |
| Amax, Inc. | Cyprus Minerals Company |
| Ambassador Petroleum Corp. | Anadarko Production Company |
| Amber Oil Company | National Energy Group, Inc. (Dallas) |
| Amber Resources Co. | Delta Petroleum Corp. |
| Ambrit Energy Corporation | Castle Energy Corp. |
| AMCAN Oil Corp. | Aminoil USA, Inc. |
| AmCog Acquisition Corp. | Same (Subsid: American Exploration Company) |
| Amerac Energy Corporation (Houston) | Southern Mineral Corp. |
| Amerada Corp. | Amerada Petroleum Corp. |
| Amerada Hess Corporation (New York City) | Same |
| Amerada Petroleum Company | Amerada Hess Corporation |
| American Corporate Resources, Inc. | Same (Affil: Meridian Oil Inc.) |
| American Eagle Petroleums Ltd. | CS Resources Ltd. |
| American Energy Exploration Company | Same |
| American Exploration Company | Louis Dreyfus Natural Gas Corp. |
| American Exploration Drilling | Pinto, Joseph |
| American Exploration Gas Systems Corp. | Louis Dreyfus Natural Gas Corp. |
| American Exploration Production Company | Same (Subsid: Louis Dreyfus Natural Gas Corp.) |
| American Independent Oil Company | Aminoil USA, Inc. |
| American International Petroleum Corp. | Aztec Energy Corp. |
| American Liberty Oil Company | American Petrofina Co. of Tex. |
| American Marracaibo Oil Company | Felmont Oil Corporation |
| American National Petroleum Co. | Patrick Petroleum Co. |
| American Natural Energy Corp. | Alexander Energy Corporation |
| American Natural Gas Production Company | ANR Production Company |
| American Natural Resources Corp. | ANR Production Company |
| American Oil & Gas Inc. | Same (JV: North Finn LLC & Tower Columbia Corporation) |
| American Oil Company | AMOCO Oil Company |
| American Oil Company of Texas | Mobil Oil Corporation |
| American Pacific International Corp. | Petro-Lewis Corp. |
| American Petrofina Co. of Texas | Subsid: American Petrofina, Inc. |
| American Petrofina, Inc. | Fina Oil and Chemical Company |
| American Promax Inc. | Same (Vancouver, BC) |
| American Public Energy Company | Amquest Corp. |
| American Quasar Petro. Co. of N.M. | Wolverine Exploration Company |
| American Republic Oil Company | Sinclair Oil Company |
| American Reserve Corp. | Same (Subsid: Louis Dreyfus Natural Gas Corp.) |
| American Resources of Delaware, Inc. | Same |
| American Royalty Petroleum Company | Crescent Oil and Gas Corporation |
| American Trading & Production Corp. | ATAPCO |
| Americex, Inc. | Same |
| Ameriplor Corp. | Same (Subsid: American Exploration Company) |
| Ameroil Energy Corp. | ALN Resources Corp. |
| Amerox Acquisition Corp. | Same (Subsid: American Exploration Company) |
| Amex Oil Company | Same (Subsid: American Exploration Company) |
| AMINI Oil Company | Teal Exploration, Ltd. |
| Aminoil USA, Inc. | Phillips Petroleum Company |
| Aminoil, Inc. | Phillips Oil Company |
| Amistad Land & Cattle Company, Inc. | Spike Box Land & Cattle Company, Inc. |
| Amkan Acquisition Corp. | Same (Subsid: American Exploration Company) |
| AMOCO Oil Company | AMOCO Production Company |
| AMOCO Production Company | BP Amoco, Inc. |
| AMPOL Exploration Company | AMPOLEX (USA) Inc. |
| AMPOLEX (USA) Inc. (Denver) | Same |
| Amquest Corp. | Same |
| AMR Energy Corp. | Toga Petroleum Company |
| AMVEST Corp. | Same (Charlottesville, VA) |
| AMVEST Osage Inc. | Constellation Energy Partners LLC |
| Anaconda Gold and Silver Company | Anaconda Mining Company |
| Anaconda Mining Company | Atlantic Richfield Company |
| Anadarko Land and Exploration Company | ALECO, Inc. |
| Anadarko Petroleum Corporation | Same |
| Anadarko Production Company | Anadarko Petroleum Corporation |
| Anchor Bay Corp. | Same |
| Anderman/Smith Operating Co. | Same |
| Andermen Oils Wyoming, Inc. | Heritage Energy Resources, Inc. |
| Anderson, Carl B. | Same (also See Anson Company) |
| Anderson, Harold J., Inc. | Same (New Orleans) |
| Anderson-Prichard Oil Company | APCO, Inc. |
| Andover Oil Company | Santa Fe Andover Oil Company |
| Andrews Production Company | Same |
| Anflo, Clar, Welfeit | Indian Royalty Company |
| Angeles Corp. | Saxon Oil Development Partners |
| Anglo Energy, Inc. | Nabors Industries, Inc. |
| Anglo Energy, Ltd. | Rosewood Resources, Inc. |
| ANM Services Corp. | Same (Subsid: American Exploration Company) |
| ANR | Same (Subsid: Coastal Oil and Gas Corporation) |
| ANR Limited Inc. | ANR Production Company |
| ANR Production Company | Same (Subsid: Coastal Oil and Gas Corporation) |
| Anran Corporation | Same |
| Anschutz Corporation (Denver) | Same |
| Anschutz Dunwoody Drilling Co. Inc. | Anschutz Corporation |
| Anschutz Gold Coast Corp. | Same (Subsid: Anschutz Corporation) |
| Anschutz Investment Company | Same (Subsid: Anschutz Corporation) |
| Anschutz Overseas Corp. | Same (Subsid: Anschutz Corporation) |
| Anschutz Permain Corp. | Same (Subsid: Anschutz Corporation) |
| Anschutz Western Corp. | Same (Subsid: Anschutz Corporation) |
| Anschutz Wyoming Corp | Same (Subsid: Anschutz Corporation) |
| Anson Company | Chesapeake Mid-Continent Corp. |
| AnSon Corporation | Chesapeake Mid-Continent Corp. |
| AnSon Gas Corporation | Same (Affil: Anson Company) |
| AnSon Production Corporation | Chesapeake Merger II Corp. |
| Antares Oil Corporation | Oxford Consolidated, Inc. |
| Antelope Gas Products Company | Antelope Production Company |
| Antelope Production Company | Same |
| Antero Resources Corp. (Denver) | XTO Energy, Inc. |
| Antlers Enterprises Inc. | Simba Energy Corp. |
| Antonio Resources, Inc. | Petroro Corporation |
| Anvil Petroleum Corp. | Same |
| Apache Corporation (Houston) | Same |
| Apache Exploration Corporation | Apexco, Inc. |
| Apache Oil Corporation | Apache Corporation |
| Apache Petroleum Co., LP | Key Production Company, Inc. |
| Apache Petroleum Company | Apache Corporation |
| Apache Petroleum Partnerships | Same (Affil: Apache Corporation) |
| APC Operating Company | Same (Affil: Apache Corporation) |
| APCO, Inc. | Allied Chemical Corporation |
| APD Company | Same (Affil: Apache Corporation) |
| Apex Oil Company Inc. | Same |
| Apexco, Inc. | Natomas North America, Inc. |
| APP Production Inc. | Same (Affil: Torch Energy Corporation) |
| Appalachian Gas Sale Inc. | Eastern Energy Marketing Inc. |
| APX Corporation | Same (Subsid: Anadarko Petroleum Corporation) |
| APX Western Corporation | Anadarko Petroleum Corporation |
| Aquataine | Elf Aquataine, Inc. |
| Aquila Southwest Energy Corp. | Same (Subsid: Aquilla Energy Corp.) |
| Aquila Southwest Marketing Corp. | Same (Subsid: Aquilla Energy Corp.) |
| Aquila Southwest Pipeline Corp. | Same (Subsid: Aquilla Energy Corp.) |
| Aquilla Energy Corp. | Same (Houston) (Subsid: UtiliCorp United) |
| Arakis Energy Corp. | Talisman Energy, Inc. |
| Arapaho Energy, Inc. | Subsid: Arapaho Petroleum, Inc. |
| Arapaho Land Company, LLC | Same (Affil: JMA Energy Company, LLC) |
| Arapaho Marketing Services, L.L.C. | Same (Subsid: Brighton Energy, L.L.C.) |
| Arapaho Petroleum, Inc. | Intoil, Inc. |
| Arapaho Ventures of New York, Inc. | Subsid: Arapaho Petroleum, Inc. |
| Arapaho Ventures, Inc. | Subsid: Arapaho Petroleum, Inc. |
| Arbuckle Oil Corporation | Same |
| Arch Mineral Corp. | Ashland Oil & Refining Company |
| Arch Petroleum Corp. | Pogo Producing Company |
| ARCO Exploration Company | Vastar Resources, Inc. |
| ARCO International Oil and Gas Co. | Subsid: Atlantic Richfield Co. |
| ARCO Oil and Gas Corp. | Vastar Resources, Inc. |
| ARCO Petroleum Products Company | Subsid: Atlantic Richfield Co. |
| Arena Resources Inc. | Sandridge Energy, Inc.(Pending 2010) |
| Argas Inc. | Capital Energy Inc. |
| Argent Energy, Inc. | Sonat Exploration Company |
| Argo Oil Corporation | Atlantic Refining Company |
| Argo Petroleum Corp. | Chevron USA, Inc. |
| Argo Royalty Company | Argo Oil Corporation |
| Argosy Energy Inc. | Garnet Resources |
| Arguello Inc. | Same (Subsid: Plains Resources, Inc.) |
| Ariel Company | Jerry Chambers Exploration Co. |
| Arkansas Bellwether Inc. | Same (Affil: Torch Energy Corporation) |
| Arkansas Fuel Corporation | Cities Service Oil & Gas Corp. |
| Arkansas Louisiana Gas Company | ARKLA, Inc. |
| Arkansas Louisiana Pipeline Company | ARKLA, Inc. |
| Arkansas Natural Gas Company | Arkansas Natural Gas Corporation |
| Arkansas Natural Gas Corporation | ARKLA, Inc. |
| Arkla Energy Resources Company | Same |
| ARKLA Exploration Company (E & P) | Seagull Energy Corporation |
| ARKLA Rio Offshore Exploration Company | ARKLA Exploration Company |
| ARKLA, Inc. (Gas Transmission) | NorAm Energy Corp. |
| Arkoma Production Company | ARKLA Exploration Company |
| Arlington Ventures Ltd. | Same |
| Artex Exploration Company | ARKLA Exploration Company |
| Articles of Inc. Capital Company | Transamerica Development Co. |
| Ascent Energy Inc. | Same (Subsid: RAM Energy Resources Inc. – Tulsa) |
| Ascent Energy Louisiana, LLC | Same (Subsid: Ascent Energy Inc.) |
| Ascent Operating, LP | Same (Subsid: Ascent Energy Inc.) |
| Ascent Resources WV, Inc. | Same (Subsid: Ascent Energy Inc.) |
| Ashland Exploration Holdings, Inc. | Same |
| Ashland Exploration, Inc. | Subsid: Ashland Oil, Inc. |
| Ashland Inc. | Ashland Exploration Holdings, Inc. |
| Ashland Oil & Refining Company | Ashland Oil, Inc. |
| Ashland Oil Canada | Kaiser Resources |
| Ashland Oil Inc. | Ashland Inc. |
| Aspen Group Resources Corp. | Same |
| Associated Natural Gas, Inc. | Pan Energy Field Services, Inc. |
| Associated Oil Company | Texaco USA, Inc. |
| Associated Producers Company | Associated Oil Company |
| Associated Royalty Company | Same |
| Astra Resources, Inc. | Same (Subsid: Western Resources, Inc.) |
| ATAPCO | Same |
| Athabasca Company | Home Petroleum Corporation |
| Atlantic Oil Producing Company | Atlantic Refining Company |
| Atlantic Petroleum Storage Co. | Atlantic Refining Company |
| Atlantic Refining Company | Atlantic Richfield Company |
| Atlantic Richfield Company | BP Amoco Inc. |
| Atlantis Resources, Ltd. | Summit Resources, Ltd. |
| ATP Oil & Gas Corp. | Same (Houston) |
| Atra Exploration Corp. | Same |
| Aurora Gasoline Company | Ohio Oil Company |
| Austin Drilling Company | Southland Royalty Company |
| Austral Oil Company | Mobil Oil Corporation |
| Austral Oil Company, Incorporated | Same (Subsid: American Exploration Company) |
| Avance Oil and Gas Company, Inc. | Amax Petroleum Corp. |
| Aviara Energy Corp. (Houston) | Same (Affil: Hunt Petroleum Corp.) |
| Axem Energy Co. | Same (Affil: Axem Resources Incorporated) |
| Axem Resources Incorporated | Westport Oil & Gas Inc. |
| Axio Natural Resources, Inc. | Chesapeake Energy Corporation |
| Axroyalty, Inc. | Axem Resources Incorporated |
| Axyn Petroleum Corp. | Drilcorp Energy Ltd. |
| Aztec Energy Corp. | Same |
| Aztec Oil and Gas Company | Same (Affil: Meridian Oil Inc.) |
| B | |
| B & B Drilling Company | Exxon Company USA |
| Babcock & Brown Energy Inc. | Same |
| Babylon Oil Corp. | Same (Affil: Torch Energy Corporation) |
| Baca Petroleum, Ltd. | Baca Resources, Ltd. |
| Baca Resources, Ltd. | Same |
| Baily, Vinson & Marion | Sinclair Oil Corporation |
| Bakersfield Fuel and Oil Co. | Berry Petroleum Corporation |
| Balco Energy Corp. | Houston Oil Fields Company |
| Balcron Oil Company | Equitable Resources Energy Company |
| Bald Eagle Energy Inc. | Same (Houston) |
| Bald Eagle Energy Inc. (Houston) | Same |
| Baldridge and King | Champlin Petroleum Company |
| Ballard and Cordell | Balco Energy Corp. |
| Bankline Oil Company | Aminoil USA, Inc. |
| Banner Services, Inc. | Devon Energy Corporation |
| Barago Energy Company | Mission Resources Corp. |
| Barbour Energy Corporation | Same |
| Barby Energy Corporation | Latigo Oil & Gas Inc. |
| BarDon Oil Company | Liquidated |
| Barfield Oil Corporation | Evergreen Operating Corporation |
| Bargo Energy Company | Mission Resources Corporation |
| Barnsdall Oil Company | Sunray Oil Corporation |
| Barrett Energy Company | Barrett Resources Corporation |
| Barrett Resources Corporation | Williams Companies, The |
| Barrett, Bill Corporation | Same (Denver) |
| Bartex Energy Corp. | Same |
| Bartex Exploration Corp. | Same |
| Baruch-Foster Corp. | Hadson Energy Resources Corp. |
| BASF Corp. | Wintershall Energy |
| Basin Drilling Corp. | Texaco, USA, Inc. |
| Basin Exploration Inc. (Denver) | Stone Energy Corp. |
| Basin Petroleum Company | Texaco USA, Inc. |
| Basin Petroleum Corp. | Texaco USA, Inc. |
| Basis Petroleum, Inc. | Same (Subsid: Salomon Inc.) |
| Bass Bros. Enterprises, Inc. | Bass Enterprises Producing Co. |
| Bass Enterprises Producing Co. | Same |
| Bay Petroleum & C.U. Bay | Tenneco Oil Company |
| Bay Pipeline, Inc. | Conquest Exploration Company |
| Bayard Drilling Technologies, Inc. | Same |
| BayCorp. Holdings Ltd. | Same (Subsid: Sloan Group Ltd.) |
| Baytrust Oil Explorations LTD | Same (Affil: Torch Energy Corporation) |
| Bayview Petroleum Company | Mobil Oil Corporation |
| BB & O Oil Company | Berry Petroleum Corporation |
| BBM Drilling Company | Exxon Company USA |
| BCF Resources, Inc. | Same |
| Beacon Oil Company | Ultramar, Inc. |
| Bear Energy, LP | Same(Subsid: Bear Stearns Companies, Inc.) |
| Bear Stearns Companies, Inc., The | Same (NY, NY) |
| Bearcat Land, Inc. | Same |
| Beard & Hammond | Hammond, J.G. |
| Beard Company, The | Beard Oil Company |
| Beard Oil Company | Same |
| Beardmore Oil, Inc. | Petroleum Company |
| Beaver Creek Hydrocarbons, Inc. | Simba Energy Corp. |
| Beaver Mesa Exploration Company | MGF Oil Corporation |
| BEC Merger Corp. | The Beard Company |
| Belcher Oil Company | Sabine Corp. |
| Belco Development Corporation | BelNorth Petroleum Corporation |
| Belco Oil & Gas Corp. | Westport Resources Corp. |
| Belco Petroleum Corporation | BelNorth Petroleum Corporation |
| Belco Petroleum North America, Inc. | Enron Oil & Gas Company |
| Belco Wyoming Corporation | Enron Oil & Gas Company |
| Beldon & Blake Corporation | Same |
| Beldon & Blake Energy Company | Beldon & Blake Corporation |
| Bell Oil & Gas Company | Vickers Refining Company, Inc. |
| Bell Oil Company | Bell Oil & Gas Company |
| Bell Petroleum Company | Sabine Corporation |
| Bellexco Inc. | Same (Affil: Torch Energy Corporation) |
| Bellwether Exploration Co. (Houston) | Mission Resources Corp. |
| BelNorth Energy Company | Enron Oil & Gas Company |
| BelNorth Energy Corporation | Enron Oil & Gas Company |
| BelNorth Petroleum Corporation | BelNorth Energy Corporation |
| Belridge Oil Company | Shell Oil Company, Inc. |
| Ben Franklin Refining Company | Bell Oil and Gas Company |
| Benedum-Trees Oil Company | Kerr-McGee North American Onshore Corporation |
| Bennet Petroleum Corporation | Abraxus Petroleum Corporation |
| Benton Oil & Gas Co. | Same |
| Benz Energy Inc. | Same (Houston) |
| Benz Oil Corporation | Benz Energy Inc. |
| Berkley Petroleum Corporation | Anadarko Petroleum Corporation |
| Berry & Ewig | Berry Petroleum Company |
| Berry & Ewig Oil Company | Berry Petroleum Company |
| Berry Holding Company | Berry Petroleum Company |
| Berry Improvement Company | Berry Petroleum Company |
| Berry Oil Company | Berry Petroleum Company |
| Berry Oil Trading & Transpiration Company | Berry Petroleum Corporation |
| Berry Petroleum Company | Berry Petroleum Corporation |
| Berry Petroleum Corporation (Taft, CA) | Same |
| Berry, C.J., Dredging Company | Berry Petroleum Company |
| Beta Development Company | Mesa, Inc. |
| Beta Oil & Gas Inc. | Same (Newport Beach, CA) |
| Beta Oil & Gas Inc. (Houston) | Prtrohawk Energy Corporation |
| BG Gas Services (US) | British Gas Exploration & Production Co. (Subsid: British Gas (PLC)) |
| BHP Petroleum (Americas) Inc. | Same |
| BHP Petroleum Company Inc. | Same |
| Big 10 Oil Company | Berry Petroleum Corporation |
| Big A Well Service Company | Key Energy Group, Inc. |
| Big Chief Drilling Company | Entex Petroleum, Inc. |
| Big Four Petroleum Company | Same |
| Big Horn Fractionation Company | Western Gas Processors, Ltd. |
| Big Piney Oil & Gas Company | National Energy Group, Inc. |
| Big Sky Marketing Corporation | Ocean Energy, Inc. |
| Big West Drilling | Alliance Drilling Company |
| Bintliff, D.C. | Same |
| Birch Ranch Oil Company | Shell Oil Company, Inc. |
| Bird Creek, LLC | Same (Subsid: Chesapeake Energy Corp.) |
| Bishop Oil Company | Shell Oil Company, Inc. |
| Bison Energy Corporation | Middle Bay Oil Company, Inc. |
| BJ Services Company | Same (Houston) |
| B-L Associates | Same |
| Black Hills Exploration and Production, Inc. | Same (Rapid City, SD) |
| Black Rock Partners LLC | Coronado Resources LLC |
| Black Sea Energy, Inc. | Ivanhoe Energy, Inc. |
| Black Stone Acquisitions Partner I, L.P. | Black Stone Natural Resources I, L.P. |
| Black Stone Minerals Company, LP | Same (Houston) |
| Black Stone Oil Company | Comstock Resources, Inc. |
| Black Warrior Wireline Corp. | Warrior Energy Services Corporation |
| Blackbird Company | Same (Affil: Axem Resources Incorporated) |
| Blackhawk Oil Company | Same (Affil: Torch Energy Corporation) |
| Blackjack Resources, Inc. | Same |
| Blanco Oil Company | Sohio Petroleum Company |
| Blazer Energy Corp. | Eastern States Oil & Gas, Inc. |
| Blessure Hydrocarbons Corp. | Same |
| Blue Dolphin Energy Company | Same (Houston) |
| Blue Dolphin Exploration Company | Same (Subsid: Blue Dolphin Energy Company) |
| Blue Quail Oil Company | Silverridge Corp. |
| BMR Corporation | HS Resources, Inc. |
| BN Financial Services Inc. | Same (Affil: Meridian Oil Inc.) |
| BN Geothermal Inc. | Same (Affil: Meridian Oil Inc.) |
| BN Leasing Inc. | Same (Affil: Meridian Oil Inc.) |
| BN Services, Inc. | Same (Affil: Meridian Oil Inc.) |
| BNL Development Corp. | Same (Affil: Meridian Oil Inc.) |
| Bodcaw Oil Properties | Placid Oil Company |
| Boesche, Peter | Same |
| Bogert Oil Company | Louis Dreyfus Energy Corp. |
| Bogert, Richard D. | BOGO Energy Corporation (operated properties) |
| BOGO Energy Corporation | Same |
| Boise Southern Company, Inc. | Sonat Minerals, Inc. |
| Boltex Oil & Gas Company | Same |
| Bolyard Oil & Gas Ltd. | Camelot Corporation |
| Bomac Exploration Company | W.R. Grace and Company |
| Bonanza Petroleum, Inc. | Same |
| Bonneville Fuels Corp. (Denver) | CEC Resources, Ltd. |
| Bonneville Pacific Corp. | Same (Los Angeles) |
| Bonray Drilling Corp. | Bayard Drilling Technologies, Inc. |
| Bonray Energy Company | EOG (Oklahoma) Inc. |
| Boomer Marketing Corp. | Same (Subsid: Alexander Energy Corporation) |
| Border Exploration Company | Coastal Oil & Gas Corporation |
| Border Resources Inc. | Lomak Energy Services Co. |
| Boswell Corp. | Grace Petroleum Corporation |
| Boswell Energy Corporation | Grace Petroleum Corporation |
| Bosworth Oil Company | Same |
| Boundary Oil Co. | Conquest Exploration Company |
| Boundary Properties | Conquest Exploration Company |
| Bow Valley Industries | Same |
| Bow Valley Petroleum, Inc. | Great Western Resources, Inc. |
| Box Energy Corporation | Remington Oil & Gas Corp. |
| BP | British Petroleum Company |
| BP Amoco Inc. | Same |
| BP Canada | Talisman Energy, Inc. |
| BP Exploration Inc. | BP Amoco, Inc. |
| BP Exploration Inc. (lower 48 onshore) | TEX/CON Oil & Gas Company |
| Bracell Petroleum | Murphy Oil Corporation |
| Bracewell Development Corp. | Same (Affil: Torch Energy Corporation) |
| Bracken Energy Company | Same |
| Bradco Oil & Gas Company | Nichols Oil and Gas Company |
| Bradford Corp. | Same |
| Bradford Energy Corp. | Bradford Corp. |
| Bradford Petroleum Co. | Bradford Energy Corp. |
| Bradley Producing Corporation, The | Triton Producing Company |
| Bradmar Petroleum Corporation | Alexander Energy Corporation |
| Brandywine Oil | Atlantic Richfield Company |
| Braun, C.F. | Satnta Fe Braun, Inc. |
| Bravo Natural Resources Inc. (Tulsa) | Chesapeake Energy Corp. |
| Brazos Oil and Gas Corp. | Same (Subsid: Dow Chemical) |
| Breck Operating Corporation | Same |
| BRG Petroleum Corporation | Chesapeake Energy Corp. |
| BRG Petroleum Inc. | Seagull Energy Corp. |
| BRG Production Company | BRG Petroleum Corporation |
| BRI Holding Corp. | Chippewa Resources Corp. |
| Bridge Oil Company | Parker and Parsley Development Partners, LP |
| Bridgeline Holdings LP | Chevron |
| Bridger Petroleum Corp. | Home Petroleum Corporation |
| Brigham Exploration Co. | Brigham Oil & Gas, L.P. |
| Brigham Oil & Gas, L.P. | Same |
| Brighton Acquisitions Company. L.L.C. | Same (Subsid: Brighton Energy L.L.C) |
| Brighton Energy, L.L.C. | Same |
| Brilliant Minerals Corporation | Womad Oil Company |
| Brinson and Collines | United Producing Company |
| Bristol Resources Corp. | Same (Tulsa) |
| Bristol Resources Production Company | Same (Subsid: Bristol Resources Corp.) |
| British American Oil Company | Gulf Oil Company |
| British Gas (PLC) | Same |
| British Petroleum Company (US) | Sohio Petroleum Company |
| British-Borneo Petroleum, Inc. | Same (Subsid: British-Borneo Petroleum Syndicate, PLC) |
| Brock Exploration Corporation | Key Production Company, Inc. |
| Broken Hill Proprietary Co. Ltd. | BHP Petroleum Company, Inc. |
| Bronco Drilling Inc. | Same (Subsid: Allis-Chalmers Energy) |
| Bronco Energy, Inc. | Same (Tuscon) |
| Brookhave Oil Company | Lear Petroleum Corp. |
| Brooklyn Union Gas | Fuel Resources |
| Brooks Hall Oil Company | Alexander Energy Corp. |
| Brown – Saratoga Corporation | Same |
| Brown & Root | Halliburton Company |
| Brown, The R.J. Company | Ashland Oil & Refining Company |
| Brown, Tom Inc. (Midland) | Same (Subsid: EnCana Corp.) |
| Brustan Petroleum Corp. | Same |
| Buckeye Exploration | Keystone Exploration, Inc. |
| Buckhorn Oil Company | Apache Corporation |
| Buckhorn Petroleum | Harper Oil Company |
| Buffalo Capital V Ltd. | Aladdin Oil Corp. |
| Buffalo Oil Company | Conoco Inc. |
| Burdell Properties | Mission Resource Partners, L.P. |
| Burkhart Petroleum Corp. | Same (Houston) |
| Burlington Northern Petroleum, Inc. | Same (Houston) |
| Burlington Northern, Inc. | Same (Houston) |
| Burlington Resources Corp. | ConocoPhillips |
| Burlington Resources Offshore Inc. | ConocoPhillips |
| Burlington Resources Trading Company | ConocoPhillips |
| Burmah Oil and Gas Company | Aminoil USA, Inc. |
| Burnaby Enterprises, Inc. | Unit Corporation |
| Burnett Oil Company | Same |
| Burns, R.L. | Pyro Energy Corp. |
| Burton/Hawks, Inc. | Hawks Industries, Inc |
| Bush Oil Company | Berry Petroleum Corporation |
| Buttes Gas & Oil Company | Reunion Resources Company |
| Buttonwood Petroleum Corporation | Gothic Energy Corporation |
| Buttram Energies, Inc. | Same |
| Buttran Texhoma Company | Buttran Energies, Inc. |
| Byrd Oil Corp. | Mobil Oil Corporation |
| Byrd Operating Co. | Same |
| C | |
| C & K Petroleum, Inc. | Enstar Petroleum Company |
| C.J. Company | Berry Petroleum Corporation |
| Cabot Carbon Company | Cabot Corporation |
| Cabot Corporation | Cabot Oil & Gas Corporation |
| Cabot Oil & Gas Corporation | Same |
| Cachuma Drilling Corporation | Dyco Petroleum Corporation |
| Caim Energy USA | Meridian Resource Corp. |
| Cal Dive International Inc. | Same (Subsid: Helix Energy Solutions Group) |
| Calco, Inc. | Chevron USA, Inc. |
| California Company, The | Chevron USA, Inc. |
| California Oil Company | California Company, The |
| California Petroleum Corp. | Texaco USA, Inc. |
| California Security Plans, Inc. | Burdell Properties |
| Callon Consolidated Partners LP | Callon Petroleum Company |
| Callon Petroleum Company | Same (Natchez, MS) |
| Calpine Corp. | Same (Los Angeles, CA) |
| Calplans Corporation | Burdell Properties |
| Calplans Oil and Gas Company | Burdell Properties |
| Calplans Partners | Burdell Properties |
| Calplans Resources | Resource Partners |
| Calumet Creek Oil, Ltd. | Atlantic Refining Company |
| Calumet Florida, Inc. | Plains Resources, Inc. |
| Calumet Industries, Inc. | Heritage Group, The |
| Calvert Exploration Company | Sun Calvert Company |
| Camaroo Energy Co. | C-Twentyette Oil and Gas Company (USA) |
| Cambridge Atlantic Royalty Company | Ocean Energy, Inc. |
| Cambridge Oil & Gas Company | Normandy Oil & Gas Co. |
| Camelot Corporation | Same |
| Cameriana Petroleum Corporation | Total Petroleum, Inc. |
| Camterra Resources, Inc. | Same (Affil: Martex Drilling Company, LLP) |
| Can West Exploration, Inc. | Same (Calgary) |
| Canaan Energy Inc. | Chesapeake Energy Corp. |
| Canaan Exploration, LLC | Same (Oklahoma City) |
| Canadian Angus Resources, Ltd. | Abacan Resource Corp. |
| Canadian Export Oil & Gas | Pacer Development |
| Canadian Futurity Oils, Ltd. | Baca Resources, Ltd. |
| Canadian Homestead Gas Company | Inter-City Gas |
| Canadian Industrial Gas & Oil | Norcen Energy Resources |
| Canadian Merrill | Francana Oil |
| Canadian Reserve | Texaco USA, Inc. |
| Canadian Superior Oil | Mobil Oil Corporation |
| Canadian Turbo, Inc. | Same |
| CanArgo Energy Corp. | Same (Houston) |
| Canetic Resources Trust | Penn West Energy |
| Canman (U.S.), Inc. | Amoco Production Company |
| Cannon Energy, Inc. | Panther Energy Company, LLC |
| Cannon Texas, Inc. | Cannon Energy, Inc. |
| Canstar Ventures Corp. | Abacan Resource Corp. |
| Cantera Natural Gas LLC | Copano Energy LLC |
| Capatsky Petroleum, Inc. (Calgary) | Pease Oil Company |
| Capco Energy Inc. | Same (Affil: Pyramid Petroleum. Inc.) |
| Capital Energy Inc. | Same |
| Capitalistic, Inc. | Fossil Bay Holding Co., Inc. |
| Capitan Petroleum | E.E. Nearburg |
| Capitan, Inc. | E.E. Nearburg |
| Capoil Inc. | Montex Exploration Company |
| Captiva Minerals Inc. | DLB Oil & Gas Inc. |
| Captiva Resources, Inc. | Same |
| Caravelle Petroleum, Inc. | Same |
| Carbon Energy Corp. | Evergreen Resources, Inc. |
| Cardinal Petroleum Company | Phillips Petroleum Company |
| Carissa Oil Company | Berry Petroleum Corporation |
| Carl Oil & Gas Co. | Same (Subsid: McFarland Energy, Inc.) |
| Carlile and Howell, Inc. | Sonat, Inc. |
| Carlton Resources Corp. | Ram Energy, Inc. |
| Carmen Acquisition, LLC | Same (Subsid: Chesapeake Energy Corp.) |
| Carolina Oil & Gas | Graham Exploration Corp. |
| Carper Drilling Company | Cities Service Oil Company |
| Carrizo Oil and Gas Inc. | Same |
| Carson Petroleum Corporation | Devon Energy Corporation |
| Cartel, Inc. | Same (Subsid: Washita Production Company) |
| Carter Oil Company, The | Exxon Corporation |
| Cascade & H.Y. “Red” Davidson | Pure Oil Company |
| Cascade Natural Gas Corp. | MDU Resources Group Inc. |
| Caspian Energy International Inc. (Dallas) | Puma Energy Inc. |
| Castle Energy Corp. | Same (Subsid: Delta Petroleum Corp.) |
| Castle Mud & Chemical Company | Matrix Energy, Inc. |
| Castulon Royalty, Inc. | Roxana Resources, Ltd. |
| Caveham Energy Resources Inc. | Same |
| Cavenham Forest Industries Inc. | Caveham Energy Resources Inc. |
| CCE Holdings LLC | Same (JV: Southern Union Company & GE Energy Financial Services) |
| CDX LLC (Dallas) | TCW Group, Inc. |
| CEC Resources, Ltd. | Same (Calgary) |
| Cedyco Corporation (Houston) | Same |
| Celeron Oil and Gas Company | Same |
| Celsius Energy Company | Questar Exploration and Production Company |
| CenAlta Energy Services Inc. | Same (Calgary) |
| Cenard Oil & Gas Company | Chevron USA, Inc. |
| Cenergy Exploration | Conquest Exploration Company |
| Cenergy International | Conquest Exploration Company |
| Cenergy Midwest Co. | Conquest Exploration Company |
| Cenergy Transmission | Conquest Exploration Company |
| Cenex, Inc. | Same |
| Centennial Natural Gas Corporation | Grand Valley Gas Company |
| Centex Oil and Gas, Inc. | Conquest Exploration Company |
| Central Del Rio | Pan Canadian Petroleum |
| Centura Energy | Minden Oil & Gas, Inc. |
| Centura Inc. | Pennsylvania Castle Energy Corp. |
| Centurion Corporation | Brown – Saratoga Corporation |
| CEP Mid-Continent LLC | Same (Subsid: Constellation Energy Partners LLC) |
| CH4 Corp. | Bill Barrett Corporation |
| Chalaco, Ltd. | Jerry Chambers Exploration Co and Laser Oil Co. |
| Chambers, Jerry Exploration Company | Same (Affil: Axem Resources Incorporated) |
| Champion Reserve Corporation | Same |
| Champlin Oil & Gas Corp. | Champlin Petroleum Company |
| Champlin Oil & Refining Corp. | Champlin Petroleum Company |
| Champlin Petroleum Company | Union Pacific Resources Company |
| Champlin Refinery Company | Champlin Oil & Refining Corp. |
| Chance Collar Co. | Same (Subsid: Homco International, Inc.) |
| Chansler Western Oil & Development | Santa Fe Energy |
| Chaparral Energy Inc. | Same (Oklahoma City) |
| Chaparral Resources Inc. (New York) | Lukoil Overseas Holdings Inc. |
| Chapman Energy, Inc. | Coda Energy, Inc. |
| Chapman Resources Corp. | Chapman Energy, Inc. |
| Charlestown Industries, Inc. | Same |
| Charter E & P | Crystal Oil |
| Charterhall America Inc. | Aviva America Inc. |
| Chencere Petroleum Corp. | Adobe Resources Corporation |
| Cherokee Resources, Inc. | Wynn-Crosby 1994, Ltd. |
| Chesapeake Energy Corp. | Same |
| Chesapeake Energy Marketing, Inc. | Same (Subsid: Chesapeake Energy Corp.) |
| Chesapeake ENO Acquisition, LLC | Same (Subsid: Chesapeake Energy Corp.) |
| Chesapeake Exploration Company | Chesapeake Exploration Limited Partnership |
| Chesapeake Exploration Limited Partnership | Same (Subsid: Chesapeake Energy Corp.) |
| Chesapeake Gas Development Corporation | Chesapeake Exploration Limited Partnership |
| Chesapeake Gothic Corp. | Chesapeake Mid-Continent Corp. |
| Chesapeake KNAN Acquisition, LLC | Same (Subsid: Chesapeake Energy Corp.) |
| Chesapeake Louisiana, LP | Same (Subsid: Chesapeake Energy Corp.) |
| Chesapeake Merger II Corp. | Chesapeake Mid-Continent Corp. |
| Chesapeake Mid-Continent Corp. | Chesapeake Exploration Limited Partnership |
| Chesapeake Operating, Inc. | Same (Subsid: Chesapeake Energy Corp.) |
| Chesapeake ORC, LLC | Same (Subsid: Chesapeake Energy Corp.) |
| Chevron Corporation | Same (Houston) |
| Chevron Corporation | Same (Houston) |
| Chevron Texaco Corp. | Chevron Corporation |
| Chevron USA, Inc. | Chevron Texaco Corp. |
| Chicago Corporation, The | Champlin Oil & Refining Corp. |
| Chief Holdings LLC | Devon Energy Corporation |
| Chieftain International, Inc. | Hunt Oil Company |
| Chieftain Petroleum, Inc. | Entex Petroleum, Inc. |
| Chinook Pipeline, Inc. | Nucorp Energy, Inc. |
| Chinook Resources, Inc. | Nucorp Energy, Inc. |
| Chippewa Resources Corp. | Same |
| CHK-Staghorn Acquisition LP | Same (Subsid: Chesapeake Energy Corp.) |
| Choate, Jack H., Inc. | Ray Resources Corporation |
| Christie, Mitchell & Mitchell | Mitchell Energy Corporation |
| Chuska Resources Corp. | Same (Subsid: Harken Energy Corp.) |
| CIGE Merger Company, LLC | El Paso Production |
| Cimarex Energy Company | Same (Denver – Tulsa) |
| Cimarron Gathering LLC | Copano Energy LLC |
| Cimarron Operating Company | Same (Subsid: Lomak Petroleum, Inc.) |
| Cimarrona Limited Liability Company | Same (Affil: the GHK Company) |
| Cincinnati Gas and Electric Company | Cinergy Inc. |
| Cinergy Corp | Cinergy Inc. |
| Cinergy Inc. | Duke Energy Corp. |
| Circle A Drilling, Inc. | Anschutz Corporation |
| Cirque Energy Corp. | Tikal Resources Corp. |
| Cirrus Production Company | Same (Enid, OK) |
| CITCO | Cities Service Oil & Gas Corp. |
| Citgo Petroleum Corp. | Subsid: Southland Corp. |
| Cities Service Company | Cities Service Oil & Gas Corp. |
| Cities Service Gas Company | Cities Service Oil & Gas Corp. |
| Cities Service Oil & Gas Corp. | OXY USA Inc. |
| Cities Service Oil Company | Cities Service Oil & Gas Corp. |
| Cities Service Petroleum Company | Cities Service Oil Company |
| Cities Service Pipeline Company | Southland Corporation |
| Cities Service Refining Corp. | Cities Service Oil Company |
| Citrus County Land Bureau, Inc. | Subsid: Weco Development Corp. |
| Clajon Gas Co., L.P. | Aquila Southwest Pipeline Corp. |
| Clajon Holdings, L.P. | Aquila Southwest Energy Corp. |
| Clajon Marketing, L.P. | Aquila Southwest Marketing Corp. |
| Clark Oil & Refining Company | Apex Oil Company |
| Clarkland Royalty, Inc. | Same (Affil: Meridian Oil Inc.) |
| Clarkland, Inc. | Same (Affil: Meridian Oil Inc.) |
| Classic Energy, Inc. | Same (Subsid: Chesapeake Energy Corp.) |
| Classic Petroleum Resources | Same (Subsid: Chesapeake Energy Corp.) |
| Clayoquot Resources, Ltd. (Calgary) | Same |
| Cleary Exploration, Inc. | Same |
| Cleary Petroleum Corporation | Grace Petroleum Corporation |
| Cleary Petroleum, Inc. | Cleary Production, Inc. |
| Cleary Production, Inc. | Same |
| Clements Energy, Inc. | NERCO Oil & Gas, Inc. |
| Clements-Bloomer Resources | Clements Energy, Inc. |
| Clinton Oil Company | Energy Reserves Group, Inc. |
| Clipper Oil Company | Nutek Oil Inc. |
| CLX Energy, Inc. | Same |
| CLX Exploration, Inc. | CLX Energy, Inc. |
| CMS Continental Natural Gas Inc. | CMS Field Services Inc. |
| CMS Energy Corp. (Dearborn, MI) | Same (Subsid: Consumers Energy, Inc.) |
| CMS Field Services Inc. | Same (Subsid: CMS Energy Corp.) |
| CNG Corporation | CNG Producing Company |
| CNG Producing Company | Dominion Exploration & Production, Inc. |
| Coastal Oil & Gas Corporation | El Paso Corp. |
| Coastal Oils, Inc. | Same (Affil: Garrett & Co. – Oklahoma City) |
| Coastal States Gas Company | Sabine Production Company |
| Coastal States Gas Producing Company | Coastal Oil & Gas Corporation |
| Cobb Oil & Gas Company | Same |
| Cobb Resources Corporation | Golden Oil Company |
| Cobopco, Inc. | Cobb Oil & Gas Company |
| Cockrell Oil & Gas LP | UNOCAL Corporation |
| Coconino SMA, Inc. (Park City, UT) | Same |
| Coda Energy, Inc. | Same (Subsid: Belco Oil & Gas Corp.) |
| Cody Company | Cabot Oil & Gas Corporation |
| Cody Energy, L.L.C. | Cabot Oil & Gas Corporation |
| CoEnergy Anadarko, Inc. | MCNIC Oil & Gas Midcontinent, Inc. |
| CoEnergy Mid-Continent, Inc. | MCNIC Oil & Gas Midcontinent, Inc. |
| CoEnergy Operating, Inc. | MCNIC Oil & Gas Midcontinent, Inc. |
| Coho Resources, Inc. | Coho Resources, Ltd. |
| Coho Resources, Ltd. | Same |
| COI | Same (Subsid: Chesapeake Energy Corp.) |
| Coldren Oil & Gas Company, LP | Same (New Orleans) |
| Coldren Resources Company | Same (Subsid: Coldren Oil & Gas Company, LP) |
| Coline Gasoline Corporation | Santa Fe Energy Company |
| Collins & Ware Inc. | Same (Midland) |
| Colorado Interstate Gas Company | Coastal Oil & Gas Corporation |
| Colorado Oil and Gas Corporation | Coastal Oil & Gas Corporation |
| Colorado Oil and T and P | Same |
| Colorado Oil Company | Coastal Oil & Gas Corporation |
| Colt Intermodal Inc. | Same (Affil: Meridian Oil Inc.) |
| Colt Resources, Inc. | Same (Subsid: JN Oil and Gas, Inc.) |
| Columbia Carbon Company | Cities Service Oil & Gas Corp. |
| Columbia Energy Co., L.P. | Same |
| Columbia Energy Group | NiSource, Inc. |
| Columbia Fuel Company | Cities Service Oil & Gas Corp. |
| Columbia Gas Development Corp. | Aviara Energy Corp. |
| Columbia Gas System, Inc. | Columbia Energy Group |
| Columbia Natural Resources LLC | Chesapeake Energy Corp. |
| Columbia Petroleum Corporation | Same |
| Columbus Energy Corporation | Same (Subsid: Cimarex Energy Company) |
| Comanche Energy Inc. | Same (Dallas) |
| Comet Drilling Company | Ocean Energy, Inc. |
| Comet Entertainment, Inc. | Texoil, Inc. |
| Comex Marine Service | Same |
| Common Parent Corporation | Same (Affil: Meridian Oil Inc.) |
| Comstock Resources, Inc. | Same (Dallas) |
| Concho Exploration Inc. | Chesapeake Energy Corp. |
| Concho Oil & Gas Corp. | Chesapeake Energy Corp. |
| Concho Resources Inc. | Chesapeake Energy Corp. |
| Concise Oil and Gas Partnership | Same (Affil: Hallwood Energy Companies) |
| Concord Oil Company | Same (Houston) |
| Concur Petroleum | Guaranty Energy |
| Conder | Same |
| Conoco Inc. | ConocoPhillips |
| ConocoPhillips | Same (Houston) |
| Conquest Energy Co. | American Exploration Company |
| Conquest Exploration Company | American Exploration Company |
| Conquest Exploration Company | Same |
| Conquest Texas, Inc. | Conquest Exploration Company |
| Conquest Transmission Company | Boundary Properties, Inc. |
| Consolidated Fuel Corporation | Exploration Company of Louisiana |
| Consolidated Gas Utilities Corporation | ARKLA, Inc. |
| Consolidated National Gas | CNG Corporation |
| Consolidated Oil & Gas, Inc. | Hugoton Energy Corporation |
| Consolidated Oil Corporation | Sinclair Oil Corporation |
| Consolidated Production | Petro-Lewis Corp. |
| Constellation Energy Parners LLC | Same (Houston) |
| Consumers Gas | Same |
| Consumers Power Company | U.S. Energy Corp. |
| Continental Natural Gas, Inc. | CMS Energy Corp. |
| Continental Natural Gas, Inc. | Same |
| Continental Oil Company | Conoco Inc. |
| Continental Resources Corp. | Chapman Resources Corp. |
| Continental Resources, Inc. | Same (Enid, OK) |
| Continental Trend Resources Corp. | Continental Resources Inc. |
| Contour Energy Company | Same (Houston) |
| Converst Energy Partners, Ltd. | Convest Energy Corp. |
| Convest Energy Corp. | Edisto Resources Corp. |
| Convest Energy Corp. | Same (Subsid: Windsor Energy Corp.) |
| Copano Energy LLC | Same (Houston) |
| Coquina Oil Corp. | Same (Subsid: American Nat’l Petroleum Co.) |
| Coral Drilling | Same |
| Coral Reserves Group | Canaan Energy Inc. |
| Core Oil and Gas | Same |
| Corker Resources Inc. | Same (Calgary) |
| Cornell Oil Company | Same (See Notes in back) |
| Cornet | Conder |
| Coronado Corporation | AMOCO Production Company |
| Coronado Resources LLC | Same (Tulsa) |
| Corpus Christi Oil & Gas Company | PG&E Resources |
| Cortez Oil & Gas Inc. (Dallas) | Encore Acquisition Co. |
| Cosden Oil & Chemical Company | American Petrofina Co. of Texas |
| Cosden Petroleum/Grace | American Petrofina Co. of Texas |
| Coseka Resources Ltd. | North Canadian Oils Ltd. |
| Costain Holdings Inc. | Same |
| Costilla Energy Inc. | Same |
| Costilla Energy LLC | Costilla Energy Inc. |
| Costilla Petroleum Corporation | Costilla Energy Inc. |
| Cotton Petroleum Corp. | Apache Corporation (Oxy) |
| Cotton Valley Resources Corp. | Aspen Group Resources Corp. |
| Coty | Lario Oil and Gas Company |
| Courtaulds | Same |
| Courtaulds North America Inc. | Same |
| Cox & Cox | Edwin L. & Berry R. Cox |
| Cox, Edwin L. and Berry R. | Same |
| CP Resources Inc | Redwood Energy (USA) Ltd. |
| CRA, Inc. | Terra Resources, Inc. |
| Crabtree, F. Dale | Jan-Dal Petroleum |
| Crawley Petroleum Corporation | Same |
| Crescendo Resources, L.P. | BP Amoco Inc. |
| Crescent Corporation | Kerr-McGee Corporation |
| Crescent Oil & Gas Corp. (Colorado) | Monument Resources, Inc. |
| Crescent Oil and Gas Corporation | Livingston Oil Company |
| Crescent Petroleum, Inc. | Same (Oklahoma City) |
| Creslenn Oil Company | Deminex U.S. Oil Corp. |
| Crestmont Petroleum | Cities Service Oil & Gas Corp. |
| Crestone Energy Corp. | Same (Subsid: Benton Oil & Gas Co.) |
| Crimson Exploration Inc. | Same |
| Cross Timbers Oil Company | XTO Energy Inc. |
| Crown Central Petroleum Corp. | Same (Subsid: Apex Oil Company Inc.) |
| Crown Partners, LLC (Oklahoma City) | Same |
| Crown Zellerbach Corp. | James River Corporation |
| Crusader Energy Company | Encore Operating, LP |
| Crystal Gas Storage Inc. (Shreveport) | El Paso Energy Inc. |
| Crystal Oil Company | Diamond Oil Company |
| CS Resources Ltd. | Same |
| CSL Partners | Costilla Energy Inc. |
| CSX Oil & Gas Corporation | Total Petroleum, Inc. |
| C-Twentyette Oil and Gas Company (USA) | Tronz-Om US and Canada, Ltd. |
| Cudd Pressure Control Inc. | Same (Subsid: RPC Inc.) |
| Cummins & Walker Oil Company, Inc. | Corpus Christi Oil & Gas Co. |
| Cutlass Corporation | 201 Corporation |
| CXY, Inc. | Same (Subsid: Canadian Occidental Petroleum, Ltd.) |
| Cypher Energy Corporation | Alliance Exploration Corp. |
| Cyprus Capital Corp. | Everest Energy Corp. |
| Cyprus Minerals Company | Same |
| Cytoprobe Corporation | Same |
| D | |
| Dabros Properties, Inc. | JN Exploration & Production |
| Dalco Oil Company | Sabine Production Company |
| Daleco Resources Corporation (L.A., CA) | Same |
| Dalen Resources Oil & Gas Co. | Enserch Corp. |
| Dallas Oil & Minerals, Inc. | Lomak Petroleum, Inc. |
| Damson Oil Corporation | Same |
| Danciger | Sinclair Oil Corporation |
| Daugherty Resources Inc. | Same (Lexington, KY) |
| Davidson Oil & Gas, Inc. | DLB Oil & Gas, Inc. |
| Dawson Production Services, Inc. | Key Energy Group, Inc. |
| Days Corporation | Echo, Inc. |
| DCP Midstream, Inc. | Same (Subsid: Duke Energy Corp.) |
| DDD Energy Inc. | Same (Subsid: Seitel Inc.) |
| Dean Brothers Oil Company | Great Expectations |
| Deep Gas Exploration, Inc. | RATEX Resources Incorporated |
| Deep Rock Oil Corporation | Crescent Corporation |
| DeepKo Lease & Royalty Co | Same |
| DEI Enterprises, Inc. | Same |
| DEKALB Agricultural Association | DEKALB Petroleum & DEPCO, Inc. |
| DEKALB Energy Canada, Ltd. | Apache Corporation |
| DEKALB Energy Company | Devon Energy Company |
| DEKALB Petroleum & DEPCO, Inc. | DEKALB Energy Company |
| Del Mar | Same |
| Del Mar Production | Southland Royalty Company |
| Delhi Gas Marketing, Inc. | Koch Midstream Gas Marketing Company |
| Delhi Gas Pipeline Company | Koch Midstream Services Company |
| Delhi Gas Venture, Inc. | Koch Industries, Inc. |
| Delhi GasMark, Inc. | Koch Midsteram Gasmark Company |
| Delhi-Taylor Oil Company | Tenneco Oil Company |
| Delhi-Trading Incorporated | Koch Industries, Inc. |
| Delta Drilling Company | Kerr-McGee North American Onshore Corporation |
| Delta Petroleum Corp. | Same |
| Delta Rigging and Tool Inc. | Same (Subsid: Austin Ventures-Austin, TX) |
| Delta U.S. Corporation | Kerr-McGee North American Onshore Corporation |
| Deltaus Corporation | Delta U.S. Corporation |
| Deminex U.S. Oil Corp. | Southwest Royalties, Inc. |
| Denbury Offshore, Inc. | Newfield Exploration Company |
| Denbury Resources Inc. | Same (Dallas) |
| Deneve | Same |
| Denver Producing Company | Indian Royalty Company |
| DEPCO, Inc. | DEKALB Energy Company |
| Desana Corporation, The | Same (Subsid: Presidio Company) |
| Desert American Agency, Inc. | Same (Affil: Meridian Oil Inc.) |
| Desert Magic Inc. | Same (Affil: Meridian Oil Inc.) |
| Detex Oil Corp. | Southwest Royalties, Inc. |
| Deven Resources, Inc. | Same (Subsid: Daleco Resources Corporation) |
| Devon Corporation | Devon Energy Corp. |
| Devon Energy Corp. | Same (Oklahoma City) |
| Devonian | Warren Petroleum Corp. |
| DevX Energy Inc. | Comstock Resources, Inc. |
| Diamond A Inc. | Coda Energy Inc. |
| Diamond Alkali Company | Diamond Shamrock Exploration Co |
| Diamond Energy Operating Co. | Coda Energy Inc. |
| Diamond Energy, Inc. | Diamond Energy Operating Co. |
| Diamond M Corporation | Same |
| Diamond M Offshore Corp. | Diamond M Corporation |
| Diamond Oil Company | Sun Oil Company |
| Diamond Shamrock Corp. (E&P Operations) | Diamond Shamrock Exploration Co |
| Diamond Shamrock Exploration Co. | Maxus Exploration Company |
| Diamond Shamrock Offshore Partners LP | Meridian Oil Corp. |
| Diamond Shamrock, Inc. | Ultramar Diamond Shamrock Corporation |
| Diamond, Harry H. | Diamond Energy, Inc. |
| Diatom Petroleum Inc. | Same (Bakersfield) (Subsid: Ivanhoe Energy, Inc.) |
| Distinct Properties Energy, Inc. | Hare-Distinct Acquisition Corp. |
| Diversa, Inc. | Homa Oil Company |
| Diverse Energy Investments, Inc. | Same |
| Diversfied Energies | Ocean Energy, Inc. |
| Dixel | Blackjack Resources, Inc. |
| Dixel Resources, Inc. | Owl Petroleum Company |
| Dixie Oil Company | AMOCO Production Company |
| DKM Resources, Inc. | Medallion Production Company |
| DLB Energy, Inc. | DLB Oil & Gas, Inc. |
| DLB Oil & Gas, Inc. | Chesapeake Mid-Continent Corp. |
| DMF Resources Inc. | Same |
| Dome Petroleum Corp. | Texaco USA, Inc. |
| Dominion Exploration & Production, Inc. | Same (Subsid: Dominion Resources, Inc.) |
| Dominion Oklahoma Texas Exploration & Production, Inc. | Linn Energy Inc. |
| Dominion Resources, Inc. | Same |
| Doran & Associates, Inc. | Cabot Corporation |
| Dorchester | Damson Oil |
| Dorfman Production | Heisler, W.H., Jr. |
| Dos Ninos Oil & Gas Inc. | Simba Energy Corp. |
| Double Eagle Petroleum Co. (Casper, WY) | Same |
| Double Eagle Petroleum Inc. | Comanche Energy Inc. |
| Double H Petroleum Corp. | ALN Resources Corp. |
| Dougherty, J.F., Company | Same |
| Douglass Resources Corporation | Cleary Petroleum Corporation |
| Dow Chemical Co., Inc. (Oil & Gas Div.) | Apache Corporation |
| Drako Gas Partners, L.P. | Tide West Oil Company |
| Dresser Industries, Inc. | Halliburton Company |
| Dreyer Bros., Inc. | Same (Affil: Meridian Oil Inc.) |
| Dreyfus, Louis, Natural Gas Corp. | Dominion Exploration and Production, Inc. |
| Drilcorp Energy Ltd. | Same |
| Drilley Co. | Atlantic Richfield Company |
| Drilling and Exploratin | Sinclair Oil Corporation |
| DRJ, Inc. | Ocean Energy, Inc. |
| DSM Exploration, Inc. | Gulf Production Corp. |
| Duer Wagner & Co. | Wagner Oil Company |
| Duke Energy Corp. | Same |
| Duke Energy Field Services | DCP Midstream, Inc. (Subsid: Duke Energy Corp) |
| Duke Energy Field Services, Inc. | Duke Energy Field Services, LP |
| Duke Energy Field Services, LP | Same |
| Duke Power Company | Duke Energy Corp. |
| Duncan Corp. | Cobb Oil & Gas Company |
| Duncan Energy Company | Babcock & Brown Energy, Inc. |
| Duncan Enterprises, Inc. | DEI Enterprises, Inc. |
| Duncan, J. Walter Corp. | Same |
| Dupre’ International Inc. | National-Oilwell Inc. |
| Dupre’ Supply Company | National-Oilwell Inc. |
| Dusty Mac Resources, Inc. | TransGlobe Oil & Gas Corp. |
| Dyco Petroleum Corporation | Same (Subsid: Samson Investment Company) |
| Dynamar Energy, Inc. | Devon Energy Corporation |
| Dyne Exploration Company | Same (Subsid: Ascent Energy Inc.) |
| Dynegy Inc. | Same (Houston) |
| E | |
| E.P. Operating | Subsid: Enserch Corp. |
| Eagle Chief Royalty Company | Faulkner Corp. |
| Eagle Mountain Energy Corp. | Clinton Oil Company |
| EAI Acquisition Company Inc. | Same (Affil: Torch Energy Corporation) |
| Earlsboro Energies | Same (Subsid: Bogert Oil Co.) |
| Earlsboro Energies Corp. | Earlsboro Energies |
| Earlsboro Energy Corporation | Same |
| Earlsboro Oil and Gas Corp. | Earlsboro Energies |
| Eason Oil Company | Sonat, Inc. |
| East Tennessee Natural Gas | Tenneco Oil Company |
| East Wall Street Corporation | Socony Mobil Oil Company, Inc. |
| Eastern Energy Marketing Inc. | Same (Subsid: The Eastern Group, Inc.) |
| Eastern Group, Inc., The | Same (Subsid: Statoil, Inc.) |
| Eastern States Exploration Company | Equitable Resources Energy Company |
| Eastern States Oil & Gas, Inc. | Equitable Resources Energy Company |
| Eastern States Oil Company | Signal Company |
| Eastern States Petroleum & Chemical Co. | Eastern States Oil Company |
| Eastland Oil Company | Sinclair Oil Corporation |
| Eberly and Meade, Inc. | Meade Energy Corporation |
| ECC Energy Corp. | West America Corp. |
| Echo, Inc. | Same |
| Ecological Engineering Systems, Inc. | Western Gas Processors, Ltd. |
| ECOS Corporation | Same (Affil: Meridian Oil Inc.) |
| Ecova Corporation | Amoco Production Company |
| Ecuanor ASA | Rocksource ASA |
| Edge Petroleum Corp. | Same |
| Edisto Resources Corp. | Forcenergy, Inc. |
| Edwards & Leach Oil Company | Alexander Energy Corporation |
| EEH Newco LLC | Encana Corp. . |
| EEX Corp. | Same |
| EEX Onshore, Inc. | Same (Subsid: EEX Corp.) |
| EFA Technologies, Inc. | Same |
| Egret Energy Corporation | Same |
| El Can Petroleum Company | Same (Affil: Meridian Oil Inc.) |
| El Dorado Oil Company | Berry Petroleum Corporation |
| El Paso Corp. | Same (Houston) |
| El Paso Energy, Inc. | El Paso Corp. |
| El Paso Exploration and Production Company | Same (Subsid: El Paso Natural Gas Co.) |
| El Paso Exploration Company | Meridian Oil Inc. |
| El Paso Natural Gas Company | Same (Houston) |
| El Paso Oil & Gas Acquisition Corp. | Same (Subsid: El Paso Corp.) |
| El Paso Production Company | Same (Subsid: El Paso Corp.) |
| El Paso Products Company | Subsid: El Paso Natural Gas Co. |
| Elan Energy, Ltd. | Same |
| Eland Energy Corporation | Same |
| Elba Gas Company | WOC Acquisition Company |
| Elders Resources North America Inc. | New London Resources, Inc. |
| Elf Aquitaine Inc. | Elf Exploration, Inc. |
| Elf Exploration, Inc. | Same |
| Elk River Resources | Sun Company, Inc. |
| Ellora Oil & Gas Inc. | Same (Boulder) |
| Ellora Operating LP | Same (Affil: Ellora Oil & Gas Inc.) |
| Ellwood Oil Company | Southwest Royalties Inc. |
| Elmerado Petrocorp | JAN-DI Corp. |
| EM Nominee Partnership Company | Same (Affil: Hallwood Energy Companies) |
| Emerald Oil and Gas | Out of Business – Liquidated |
| Empire Energy Company | Amoco Production Company |
| Empire Gas and Fuel Company | Empire Oil and Refining Company |
| Empire Oil and Refining Company | Cities Service Oil & Gas Corp. |
| Empire Southern | Andrews Production Company |
| EnCana Corp. | Same |
| EnCana Oil & Gas, Ltd. | EnCana Corp. |
| Encor Inc. | Talisman Energy Inc. |
| Encore Acquisition Company | Same (Ft. Worth) |
| Encore Operating LP | Same (Ft. Worth) |
| Endeavor Pipeline Inc. | Same (Subsid: GMX Resources Inc.) |
| Energen Resources Corporation | Same |
| Energen Resources MAQ, Inc. | Energen Resources Corporation |
| Energy Assets Capital Corp. | Same (Affil: Torch Energy Corporation) |
| Energy Assets International Corp. | Same (Affil: Torch Energy Corporation) |
| Energy Assets IV-A LTD | Same (Affil: Torch Energy Corporation) |
| Energy Associates, Inc. | General Atlantic Energy Corporation |
| Energy Development Corporation | Same (Subsid: Samedan Oil Corp.) |
| Energy Exchange Corp. | French Petroleum Corporation |
| Energy Investments Inc. | Same |
| Energy Minerals Corp. | HS Resources, Inc. |
| Energy Operations Nevada, LP | Same |
| Energy Partners LTD (a/k/a EPL) | Same (New Orleans) |
| Energy Partners Nominee Co. | Duncan Energy Company |
| Energy Reserves Group, Inc. | BHP Petroleum (Americas) Inc. |
| Energy Service Company, Inc. | ESCO, Inc. |
| Enerplus Group | Same |
| Enex Resources Corp. | Same (Subsid: Midland Resources, Inc.) |
| English-American Import Export Co. | Same (Affil: The GHK Company) |
| Enhance Oil Resources, Inc. | Same (Houston) |
| Enjay Chemical Company | Exxon Corporation |
| Enogex, Inc. | Same (Subsid: Oklahoma Gas & Elec. Company) |
| Enopco Inc. | UMC Petroleum Corporation |
| Enova Corporation | Sempra Energy, Inc. |
| Enpal Inc. | UMC Petroleum Corporation |
| ENRON Corp. | Same |
| Enron Gas Service Corp | Same (Subsid: ENRON Corp.) |
| Enron Oil & Gas Company | EOG Resources, Inc. |
| Enserch Corp. | EEX Corp. |
| Enserch Exploration | Enserch Corp. |
| Ensign Oil & Gas Inc. | Same |
| Ensign Oil Company | Devon Energy Corporation |
| Ensource Inc. | UMC Petroleum Corporation |
| Ensources Inc. | UMC Petroleum Corporation |
| Enstar Petroleum Company | Union Texas Petroleum Corp. |
| Enstar Petroleum, Inc. | Enstar Petroleum Company |
| Ensyn Energy Inc. | Ivanhoe Energy, Inc. |
| Ensyn Group Inc. (Boston) | Ivanhoe Energy, Inc. |
| Ensyn Petroleum International | Ivanhoe Energy, Inc. |
| Entell NGL Services, LLC | Same (50/50 JV of Tejas Natural Gas Liquids LLC and Enterprise Products Partners, L.P.) |
| Enterprise Products Partners, L.P. | Same (Houston) |
| Entex Petroleum, Inc. | UMC Petroleum Corporation |
| Entex, Inc. | Same (Affil: Arkla Energy Resources Company) |
| EOG (Oklahoma) Inc. | Same (Subsid: Ensign Oil Gas Inc.) |
| EOG Resources, Inc. | Same (Houston) |
| EOR International Inc. | Uentech International Corp. |
| EPCO | Same |
| EPL | Same (See Energy Partners, Ltd) |
| Eppi Energies Corp. | Same (Subsid: Gibson US Corp.) |
| EPSCO | Flow-Quip Texas Inc. |
| EPX Company | Same (Affil: Meridian Oil Inc.) |
| Equitable Petroleum Corp. | Equitable Resources Energy Company |
| Equitable Production (Gulf) Company | Westport Resources Corp. |
| Equitable Resources Energy Company | Same (Pittsburgh) |
| Equity Oil Company (Salt Lake) | Whiting Petroleum Corp. |
| ESCO Energy Inc. | Edisto Resources Corp. |
| ESCO, Inc. | Edisto Resources Corp. |
| Esenjay Exploration Inc. (Houston) | Santos USA Corp. |
| Esmeralda Limited Liability Company | Same (Affil: The GHK Company) |
| Esso Chemical Company, Inc. | Exxon Corporation |
| Esso Standard Oil Company | Humble Oil and Refining Co. |
| Estoril Producing Corporation | Same |
| Ethel D. Company | Berry Petroleum Corporation |
| Eureka Oil Company | Same |
| Everest Energy Corp. | Same (Calgary) |
| Evergreen Resources, Inc. | Same (Denver) (Subsid: Pioneer Natural Resources, Inc.) |
| Excel Energy Corp. | Barrett Resources Corporation |
| Excel Oil & Gas, Inc. | National Energy Group |
| Excelsior Oil Corp. | McMoran Oil & Gas Company |
| Exchange | Transco |
| Exco Resources, Inc. | Same (Dallas) |
| Exeter Oil Company | Apache Corporation |
| Ex-Mission Ranches, Inc. | Same (Affil: Meridian Oil Inc.) |
| Expedition Natural Resources Inc. | Same (Subsid: GMX Resources Inc.) |
| Exploration Associates, L.P. | Exploration Associates, LLC |
| Exploration Associates, LLC | Same (Oklahoma City) |
| Exploration Company | TXCO Resources, Inc. |
| Exploration Company of Louisiana (XCL) | XCL, Ltd. |
| Exploration Company, The (San Antonio) | TXCO Resources, Inc. |
| Exploration Drilling, L.P. | Exploration Associates, LLC |
| Exploration, Inc. | Presidio Exploration, Inc. |
| Express Acquisition Company | Same (Affil: Torch Energy Corporation) |
| Exxon Company USA | ExxonMobil Corp. |
| Exxon Corporation | Exxon Company USA |
| ExxonMobil Corp. | Same (Houston) |
| F | |
| F & M Oil Company | Same |
| F & P | McMoran Oil and Gas Company |
| Fain Porter Production Company | Same (Affil: The GHK Company) |
| Fairbanks and Haas Inc. | Fortune Petroleum Corp. |
| Falcon Seaboard | Diamond Shamrock Exploration Co |
| Fargo Oils LTD. | Getty Oil Company |
| Farmer, Ed & Associates, Inc. | EFA Technologies, Inc. |
| Farmers Union Central Exchange, Inc. | Cenex, Inc. |
| Farmland Industries, Inc. | Oxoco, Inc. |
| Farmland International Energy Co. | Terra Resources, Inc. |
| Faulconer, Vernon E. Inc. | Same |
| Faulkner Corp. | Same |
| Faulkner Exploration, Inc. | Faulkner Corp. |
| FEC Offshore Inventory Company | Enron Oil & Gas Company |
| Federal Intermediate Credit Bank | Farm Credit Bank of Wichita |
| Federal Land Bank of Wichita | Farm Credit Bank of Wichita |
| Federated Natural Resources Corp. | Cherokee Resources, Inc. |
| Felmont Oil & Gas Company | Same (Affil: Torch Energy Corporation) |
| Felmont Oil Corporation | Tenneco Oil Company |
| Ferguson and Bosworth | Dissolved (See Notes in back) |
| Ferguson Oil and Gas Company | Dome Petroleum Corp. |
| Ferguson Oil Company | Same |
| Fidelity Capital Corporation | Petrodynamics, Inc. |
| Fidelity Royalty Company | Toklan Oil Company |
| Fifteen Oil Company | Tenneco Oil Company |
| Fina Inc. | Same |
| Fina Oil and Chemical Company | Same (Subsid: Fina Inc.) |
| Finlay Energy Corp. | Same |
| First Energy Corp. | Same (Akron, Ohio) |
| Flag Oil Corp. | Flag-Redfern Oil Corp. |
| Flag-Redfern Oil Corp. | Kerr-McGee North American Onshore Corporation |
| Flores & Rucks, Inc. | Ocean Energy, Inc. |
| Florida Exploration Company | HNG Oil Company |
| Florida Gas Exploration Company | Florida Exploration Company |
| Flow-Quip | Flow-Quip Texas |
| Flow-Quip Texas Inc. | Same |
| Fluor Minerals, Inc. | Fluor Oil and Gas Corporation |
| Fluor Oil and Gas Corporation | Primary Fuels |
| Flying Diamond Oil Corp. | Bow Valley Industries |
| Flynn Energy Corp. | RVO Petroleum Co. |
| FM Properties Operating, Inc. | Samedan Oil Corporation |
| FM Properties, Inc. | Same |
| Focus Energy USA Inc. | Energy Operations Nevada, LP |
| Fonsagrada, S.A. | Same (Affil: The GHK Company) |
| Foran Oil Company | Matador Petroleum Corporation |
| Forcenergy, Inc. | Forest Oil Corporation |
| Forchall Oil | Same |
| Forest Energy Resources (Subsid: Forest Oil) | Mariner Energy, Inc. |
| Forest Oil Company | Forest Oil Corporation |
| Forest Oil Corporation | Same |
| Fort Collins Consolidated Royalties, Inc. | Encana Corp. |
| Fortuna Energy Corp. | Midwest Energy Corp. |
| Fortune Natural Resources Corp. | Same |
| Fortune Petroleum Corp. | Fortune Natural Resources Corp. |
| Fossil Bay Holding Co., Inc. | Same |
| Founders Energy, Ltd. | Same |
| Fowler Farm Oil Corporation | Western Crude Oil, Inc. |
| Fox Production Corporation | Zuma New-Mexico Oil Corporation |
| FP, Inc. | Lomak Petroleum, Inc. |
| Francana Oil | Same |
| Franco Western | Franco Wyoming Oil Company |
| Franco Wyoming Company | Southland Royalty Company |
| Frankfort | Texas Pacific Oil Company |
| Fred Olsen, Inc. | Volvo Petroleum |
| Freeport Oil Company | McMoran-Freeport Oil Company |
| Freeport-McMoran Inc. | McMoran Oil & Gas Company |
| Fremont Energy Corporation | Amerac Energy Corporation |
| French Petroleum Corp. | Red Eagle Resources Corp. |
| French Production Inc. | Same |
| Frontier Oil & Gas Co., Inc. | Same (Subsid: Wainoco Oil Corp.) |
| FT-79 Corp. | Eppi Energies Corp. |
| Fuel Resources | Same |
| Fuhrman Petroleum Corporation | Conoco Inc. |
| Fullerton Oil Company | Monterey Oil Company |
| Funk Exploration | Waterford Energy, Inc. |
| G | |
| G.L.M. Oil and Gas Company (Wyoming) | Same |
| GAE Corp. | Ocean Energy, Inc. |
| Galena-Signal Oil Company | Texaco USA, Inc. |
| Gallant Oil Company | Same |
| Galvest, Inc. | PrimeEnergy Corporation |
| Garnet Resources | Same |
| Garrett & Co. (Oklahoma City) | Same |
| Gas Producing Enterprises, Inc. | Coastal Oil & Gas Corporation |
| Gas SpinCo, Inc | DCP Midstream, Inc. |
| Gasamerica, Inc. | Same (Affil: The GHK Company) |
| Gasart, Ltd. | Same (Affil: The GHK Company) |
| Gasoklahoma, Inc. | Same (Affil: The GHK Company) |
| GBK Corporation (George B. Kaiser) | Same (Affil: Kaiser-Francis Oil Company) |
| GCO Minerals Company | Same (Subsid: International Paper Company) |
| GED Energy Services, Inc. | KSC Energy, Inc. |
| Gem Oil, Inc. | Same (Subsid: American Exploration Company) |
| Gemco, Inc. | Chevron USA, Inc. |
| Gen. American Oil Company of Texas | Phillips Petroleum Company |
| General American Oil Company | Phillips Petroleum Company |
| General Atlantic Energy Corporation | General Atlantic Rockies Production Co. |
| General Atlantic Oils, Ltd. | Ocean Energy, Inc. |
| General Atlantic Resources, Inc. | Ocean Energy, Inc. |
| General Atlantic Rockies Production Co. | Ocean Energy, Inc. |
| General Crude Oil Company | Mobil G.C., Inc. |
| General Development Partnerships (various) | UMC Petroleum Corporation |
| General LP Acquisition Inc. | UMC Petroleum Corporation |
| General Petroleum Corp. | Mobil Oil Corporation |
| General Producing Company | UMC Petroleum Corporation |
| Geodyne Energy Inc. | Same (Calgary) |
| Geodyne Resources, Inc. | Samson Investment Company |
| Geodyne Technologies Inc. | Geodyne Energy Inc. |
| Georgetown Exploration Inc. | Same |
| Getty Oil Company | Texaco USA, Inc. |
| Getty Petroleum Marketing | Same (Subsid: Lukoil Oil Company) |
| Getty Reserve Oil, Inc. | Getty Oil Company |
| GFI Oil & Gas Corporation (Houston) | Salamander EnergyPLC (London) |
| GHK Capital Company | Same (Affil: The GHK Company) |
| GHK Company (Non-Operated/Producing Prop.) | GHK Energy Corp. |
| GHK Company (Operated Properties) | Transitory Corporation |
| GHK Company Columbia | Same (Affil: The GHK Company) |
| GHK Company, The | Same (Note: New Entity) |
| GHK Corporation, The | Same (Affil: The GHK Company) |
| GHK Energy Corp. | GHK Company, The |
| GHR Energy, Inc. | Same |
| Giant Exploration & Production Company | Same |
| Giant Refining Company, Inc. | Same |
| Gibralter Exploration Company | High Point Investments |
| Gibson US Corp. | Same |
| Gilcrease Oil Company | Venus Oil Company |
| Gilliland Oil Company | Reserve Petroleum Company |
| GKM Oil Company | GKM, Inc. |
| GKM, Inc. | Petromark Merger Company |
| Glacier Arizona Company | Same (Affil: Meridian Oil Inc.) |
| Glacier Park Boulder Company | Same (Affil: Meridian Oil Inc.) |
| Glacier Park Company | Same (Affil: Meridian Oil Inc.) |
| Glacier Park Denver Company | Same (Affil: Meridian Oil Inc.) |
| Glacier Park Gateway Company | Same (Affil: Meridian Oil Inc.) |
| Glacier Park Kent Industrial Company | Same (Affil: Meridian Oil Inc.) |
| Glacier Park King Street Company | Same (Affil: Meridian Oil Inc.) |
| Glacier Park Liquidating Company | Meridian Oil Inc. |
| Glacier Park Naperville Company | Same (Affil: Meridian Oil Inc.) |
| Glacier Park Northwest | Same (Affil: Meridian Oil Inc.) |
| Glacier Park Orillia Company | Same (Affil: Meridian Oil Inc.) |
| Glacier Park Riverpoint Company | Same (Affil: Meridian Oil Inc.) |
| Glacier Park South Lander Company | Same (Affil: Meridian Oil Inc.) |
| Glacier Park Wayzata Company | Same (Affil: Meridian Oil Inc.) |
| Glencoe Resources Ltd. | Same |
| Global Exploration, Inc. | Same |
| Global Exploration, L.L.C. | Global Exploration, Inc. |
| Global Link Technologies, Inc. | JR Oil & Gas, Inc. |
| Global Natural Resources Corporation | Seagull Energy Corporation |
| GlobalSantaFe Corp. | Transocean, Inc. |
| Globe | Lario Oil and Gas Company |
| Globe Life & Acc. Ins. Company (O&G Assets) | Same (Affil: Torch Energy Corporation) |
| Glorieta Oil Company Inc. | Devon Energy Corporation |
| Glover Hefner Kennedy Company | GHK Company, The |
| GMX Resources Inc. | Same |
| Goane Exploration California Corp. | Same |
| Goane-Gitzch (US), Ltd. | Goane Exploration California Corp. |
| Goddard Investment Company | Same |
| Goddard, C.B., Investment Company | Goddard Investment Company |
| Goff Oil Company | Reading & Bates Production Co. |
| Goff-Lepper Drilling Company | Goff Oil Company |
| Gold Deposit Mining & Milling Co. (Utah) | Onasco Companies, Inc. (Utah / Tennessee) |
| Gold King Exploration | Denovo |
| Golden Eagle Energy Inc. | Ultramar |
| Golden Exploration & Production Corp. | Same (Subsid: Arlington Ventures Ltd.) |
| Golden Oil Company | Same |
| Golden Triangle Royalty & Oil, Inc. | Same |
| Goodrich Petroleum, Inc. | Same |
| Gopher Oil & Gas Company, LTD. | Same (Calgary, Seattle) |
| Gordon Street, Inc. | North American Royalties, Inc. |
| Gothic Energy Corporation (Tulsa) | Chesapeake Gothic Corp. |
| GPM Corp. | Duke Energy Field Services |
| Grace Petroleum Corporation | Samson Natural Gas Company |
| Grace, W.R. | Grace Petroleum Corporation |
| Grace, W.R. and Company | Grace Petroleum Corporation |
| Graham Exploration | Same |
| Graham, Keith D. | Omni Petroleum Corporation |
| Graham-McMormick Oil & Gas | Ladd Petroleum Corp. |
| Grand Valley Natural Gas Company | Same |
| Granite Falls Rock, Inc. | Same (Meridian Oil Inc.) |
| Graridge (American Petroleum) | Petco, Inc. |
| Grayhill Exploration | U.S. Minerals Exploration |
| Great Expectations | Same |
| Great Lakes Energy Partners, LLC | Same (Affil: Range Resources Corp. & FirstEnergy Corp.) |
| Great Plains Development | Phillips Petroleum Company |
| Great Western Resources, Inc. | Forcenergy, Inc. |
| Great WTN Exploration (NV) Inc. | Great WTN Onshore Inc. |
| Great WTN Exploration (NV) Inc. | Same |
| Green Tree Resources, Inc. | Spring Resources, Inc. |
| Greenbrier Operating Company | Same |
| Greenwald, L. Scotty, & Assoc. | MacOil & Gas International |
| Greenwood Holdings Inc. | Packaging Research Corp. |
| Greka Energy Corp. | Same (New York City) |
| Gressel Corp. | VAL Energy, Inc. |
| Greystone Petroleum, LLC (Houston) | Chesapeake Energy Corp. |
| Grove Oil & Gas | Same |
| Gruy Petroleum Management Co. | Same (Subsid: Magnum Hunter Resources, Inc.) |
| Gryphon Exploration, Inc. (Houston) | Woodside Petroleum, Ltd. |
| Guaranty Energy | Same |
| Gulf Energy | Chevron USA, Inc. |
| Gulf Energy | Penn Central |
| Gulf Oil Company | Gulf Oil Corporation |
| Gulf Oil Corporation | Chevron USA, Inc. |
| Gulf Production Corporation | Same (Subsid: Coastal Oils, Inc. – OKC) |
| Gulf Resources Corp. | Same |
| Gulfco Industries, Inc. | Petroleum Services, Inc. |
| Gulfport Energy Inc. | Same (Oklahoma City) |
| Gulfstream Resources Canada, Ltd. | Anadarko Petroleum Corp. |
| Gulfstream Resources Corp. (USA) | Same |
| Gulfwest Energy Inc. | Same |
| GulfWest Oil Company | Gulfwest Energy Inc. |
| GW Merger Corp. | Great WTN Onshore Inc. |
| GW Petroleum Inc. | Great WTN Onshore Inc. |
| GWP Inc. | Great WTN Onshore Inc. |
| GWR Inc. | Great WTN Onshore Inc. |
| GWR Operating Company | Great WTN Onshore Inc. |
| Gypsy Oil Company | Gulf Oil Corporation |
| H | |
| H&H Star Energy, Inc. | Same (Subsid: Howard Company) |
| H.P. Oil & Gas Properties, Inc. | Deepko Lease & Royalty Co. |
| H-30 Drilling Inc. | Columbian Energy Co., L.P. |
| Hadson Energy Resources Corp. | Apache Corporation |
| Hadson Ohio Oil Company | Hadson Petroleum Corporation |
| Hadson Petroleum Corporation | Hadson Energy Resources Corp. |
| Hallador Exploration Company | Hallador Petroleum Company |
| Hallador Petroleum Company | Same |
| Halley Energy Corporation | Cytoprobe Corporation |
| Halliburton Company | Same |
| Hallwood Energy Corporation | Same (Subsid: Chesapeake Energy Corp.) |
| Hallwood Energy Corporation III | Same (Subsid: Chesapeake Energy Corp.) |
| Hallwood Energy Partners, L.P. | Same |
| Hallwood Petroleum, Inc. | Same |
| Hallwood Petroleum, LLC | Same (Subsid: Chesapeake Energy Corp.) |
| Halwell Company, Inc. | Same |
| Hambro Gas & Oil Company | Enron Oil & Gas Company |
| Hamilton Dome | Same |
| Hamilton Oil Corp. | Broken Hill Proprietary Co. Ltd. |
| Hammond, J.G. | JGM Company |
| Hammond, John G. | Beard & Hammond |
| Hampton Resources Corp. | Bellwether Exploration Company |
| Hancock Oil & Gas Company | Hancock Oil Company |
| Hancock Oil Company | Signal Company |
| Hanna Company, The M.A. | Same |
| Hanna Petroleum Company | The M.A. Hanna Company |
| Hanover Petroleum | Total Petroleum, Inc. |
| Harbert Energy Corporation | Forest Oil Corporation |
| Harbour Gas & Oil LTD | Same (Affil: Torch Energy Corporation) |
| HarCor Exploration, Inc. | Seneca Resources Corp. |
| Harden Oil and Gas | Same |
| Hardy Oil & Gas USA Inc. | Same |
| Hare – Hoppan Reserves Group (U.S. Assets) | Hare Resources Americas, Inc. |
| Hare Resources Americas, Inc. | Distinct Properties Energy, Inc. |
| Hare-Distinct Acquisition Corp | Goane-Gitch (US), Ltd. |
| Harken Energy Corporation (Dallas) | Same |
| Harken Exploration Company | Same (Subsid: Harken Energy Corporation) |
| Harken Oil & Gas, Inc. | Harken Energy Corp. |
| Harper Oil and Gas, Inc. | Apache Corporation |
| Harper Oil Company | Harper Oil and Gas, Inc. |
| Harper, F.E., & Cornell | Same |
| Hartex-Anadarko Permian Basin Partnership | Enron Oil & Gas Company |
| Harvest Energy Trust | Same |
| Harvestor Oil and Gas Co. | Same (Subsid: GAE Corp.) |
| Hathaway Company | Pyramid Oil |
| Hawks Industries, Inc. | Same |
| Hawthorne Oil and Gas Corporation | Same (Subsid: American Nat’l Petroleum Co.) |
| HD Oil Company | Homer Dean Oil Company |
| Headington Canada Corp. | Same |
| Headington Oil Company | Headington Canada Corp. |
| Hefner Company, The | Arbuckle Oil Corporation |
| Hefner Exploration Company | Same |
| Heisler, W.H., Jr. | Same |
| Helix Energy Solutions Group | Same |
| Helmerich & Payne, Inc. | Cimarex Energy Company |
| Helping Hand Energy, Ltd. | Same |
| Hemmings Corp. | Blackbird Co. |
| Henderson Petroleum Corp. | Burkhart Petroleum Corp. |
| Herboil Company | DMF Resources Inc. |
| Hercules Offshore Corp. | Parker Drilling Company |
| Hercules Rig Corp. | Parker Drilling Company |
| Heritage Energy Resources, Inc. | Same |
| Heritage Gas Services, LLC | CMS Energy Corp |
| Heritage Glacier Park Company | Same (Affil: Meridian Oil Inc. |
| Heritage Group, The | Same |
| Hershey Oil Company | Same (Subsid: American Exploration Company) |
| Hess Oil Corp. | Amerada Hess Corporation |
| Hickock & Reynolds | Ibex & Windfohr |
| Hickory Creek Development Company | Hanna Petroleum Company |
| High Plains Oil Corporation | Same |
| High Point Investments | Same |
| Highland Production Company | Quay Valley Inc. |
| Hildago-Willacy Oil Company | CNG Producing Company |
| Hillin-Simon Oil Company | Okland Oil Company |
| Hinkle Engineering, Inc. | Same |
| Hixon Development Company | Giant Exploration & Production Company |
| HNG | Enron Oil & Gas Company |
| HNG Fossil Fuels Company | Enron Oil & Gas Company |
| HNG Offshore Properties, Inc. | Enron Oil & Gas Company |
| HNG Oil company | HNG |
| HO&M | Houston Oil & Minerals Corporation |
| Hodge, T.F. | Same |
| Hola Communications Inc. | Tamm Oil & GasCorp. |
| Holly Corp. | Same (Merger with Frontier in litigation 2006) |
| Holly Energy Company | Enron Oil & Gas Company |
| Homa Oil & Gas Corp. | Consumers Gas Company |
| Homa Oil Company | Consumers Gas Company |
| Homco International, Inc. | Same |
| Home Petroleum Corporation | Presidio Oil Company |
| Homer Deal Oil Company | Same |
| Home-Stake Oil & Gas Co. | Same (Subsid: Cortez Oil & Gas, Inc.) |
| Home-Stake Royalty Corp. | Home-Stake Oil & Gas Co. |
| Hondo Oil & Gas Co. (New Company formed 1989, Not ARCO) | Devon Energy Corporation |
| Hondo Oil & Gas Company | Atlantic Richfield Company |
| Honolulu Oil Company | Pan American Petroleum Company |
| Horizon Oil & Gas Co. | Same |
| Horizon Oil & Gas Co. of Texas | Horizon Oil & Gas Co. |
| Horizontal Ventures Inc. | Greka Energy Corp. |
| Houston Gas & Fuel Company | Arkansas Natural Gas Company |
| Houston Gas Light Company | Houston Gas & Fuel Company |
| Houston Natural Gas Corp. | Enron Oil & Gas Company |
| Houston Oil & Energy, Inc. | Golden Triangle Royalty & Oil, Inc. |
| Houston Oil & Minerals Corp. | Tenneco Oil Company |
| Houston Oil Company of Texas | Atlantic Refining Company |
| Houston Oil Trust | Seagull Energy Corp. |
| Houston Operating Company | Same (Subsid: Normandy Oil & Gas Co.) |
| Houston Petroleum Company | MSR Exploration LTD. |
| Houston Royalty Corp. | Houston Oil & Minerals Corp. |
| Howard Energy Company | Same |
| HPC, Inc. | Home Petroleum Corp. |
| HS Resources, Inc. | Kerr-McGee Corporation |
| HS Resources, Inc. (mid-continent) | Questar Exploration and Production Company |
| HSRTW, Inc. (HS/Tide West) | Questar Exploration and Production Company |
| HTR Gas Transmission Co. | Same (Subsid: Engineering, Inc.) |
| Hudson Energy Inc. | Same (Affil: Torch Energy Corporation) |
| Hughes Eastern Petroleum, Inc. | Prairie Producing Company |
| Hughes Oil & Gas, Inc. | Texas Meridian Resources, Ltd. |
| Hughes Tool Company | Same |
| Hughes, B.J., Inc. | Hughes Tool Company |
| Hugoton Capital Ltd. Partnership | Mesa Operating Company |
| Hugoton Energy Corp. | Chesapeake Mid-Continent Corp. |
| Hugoton Management Company | Mesa Operating Company |
| Hugoton Production Company | Mesa, Inc. |
| Humble Oil & Refining Company | Exxon Corporation |
| Hunt Energy Corp. | Rosewood Resources, Inc. |
| Hunt Oil (H.L. Hunt Est.) | Same |
| Hunt Oil Company | Same |
| Hunt Petroleum Corp. (Dallas) | Same |
| Hunter Company, Inc. | ARKLA Exploration Company |
| Hunter Resources, Inc. | Magnum Petroleum, Inc. |
| Husky Energy, Inc. | Same |
| Husky Oil Company | Marathon Petroleum Company |
| Hut Oil Company | G.L.M. Oil and Gas Company |
| Hutton Oil and Gas Corp. | Same |
| Hutton/EAIC | Same (Affil: Torch Energy Corporation) |
| Hydro Carbon Trading-Transport Co., Inc. | Same |
| Hydrogen Energy Corporation | Same |
| Hytech Energy Corp. | Moran Brothers |
| HYTK Industries, Inc. | Quest Resources Corp. |
| I | |
| Ibex | Petco, Inc. |
| Ibex & Windfohr | Same |
| Ibex Resources Company, LLC | Same (Affil: JMA Energy Co., LLC) |
| ICOS Energy Corp. | Charlestown Industries, Inc. |
| IDC Energy Corp. | Same |
| IEI Exploration, Inc. | Ocean Energy, Inc. |
| IES Industries, Inc. | Same |
| III Exploration Company | Same (Subsid: Intermountain Industries Inc.) |
| Illini Carrier LP | Same (Affil: Torch Energy Corporation) |
| Illinova Corp. | Dynegy, Inc. |
| Imperial Oil and Gas Inc. | ONEOK Exploration Co. |
| Imperial Petroleum | Moss Petroleum Company |
| Imperial Petroleum, Inc. | Same |
| Income Share, Inc. | Aberdeen Petroleum Corporation |
| Independent Exploration Company | Same |
| Independent Oil Company | Shell Oil Company |
| India Temple Minerals Co. | Helping Hand Energy, Ltd. |
| Indian Oil Company | Coral Reserves Group |
| Indian Royalty Company | Cronell Oil Company |
| Indian Territory Illuminating Oil Co. | Cities Service Oil Company |
| Indian Wells Oil Company | Parker & Parsley Petroleum Company |
| Indrex, Inc. | Integrated Drilling & Exploration, Inc. |
| Industrial Gas Company | Arkansas Natural Gas Company |
| Inexco Oil Company | Louisiana Land & Exploration Co. |
| Infinity Inc. | Same (Chanute, KS) |
| Inland Fuels Corporation | Inland Resources, Inc. |
| Inland Resources, Inc. | Newfield Exploration Company |
| Integrated Drilling & Exploration Inc. | Same |
| Integrated Energy, Inc. | MCO Resources (Integrated) Corp. |
| Integrated Energy, Inc. | UMC Petroleum Corporation |
| Interamerican Corp. | Hunter Resources, Inc. |
| Inter-City Gas | Same |
| InterCoast Gas Services Co. | KCS Medallion Resources, Inc. |
| InterCoast Oil and Gas Company | KCS Medallion Resources, Inc. |
| Intergen (North America), Inc. | Same (JV of Shell Oil and Bechtel Enterprises) |
| Intermoutain Industries Inc. | Same |
| International Colin Energy Corp. | Same |
| International Nuclear Corp. | Inexco Oil Company |
| International Oil & Gas Corp. | DEPCO, Inc. |
| International Recovery Corporation | World Fuel Services Corp. |
| International Telephone | Sonat Exploration Company |
| InterNorth, Inc. | Enron Oil & Gas Company |
| Interstate Production Company | Northern Natural Gas Producing Company |
| Intex | Shell Western E & P, Inc. |
| Intoil Inc. | Same |
| Investors Royalty Company | Dalco Oil Company |
| Investors Royalty Company | Dalco Oil Company |
| Iowa-Illinois Gas and Electric Company | MidAmerica Energy Company |
| Iowas Resources Inc. | Midwest Resources Inc. |
| Iron Mountain Oil Company | Same |
| Island Oil Company | Penrose Production Company |
| Ivahoe Energy Inc. | Same (Vancouver) |
| Ivanhoe Energy, Inc. | Same (Vancouver, BC) |
| J | |
| J & B Royalty Company | Wilco Properties, Inc. |
| J. P. Oil Company Inc. | J. P. Oil Company LLC |
| J. P. Oil Company LLC | Same |
| J.O.C. Operating, Inc. | Same (Subsid: Jefferson Oil Corp) |
| Jackalope-New Mexico Oil Co. | Lacy Ranch Petro Corp. |
| Jade Resources, Inc. | Consolidated Oil & Gas, Inc. |
| Jal Oil Company | Sun Company, Inc. |
| James Energy Management, Inc. | Consolidated Oil & Gas, Inc. |
| James River Corporation | Cavenham Forest Industries Inc. |
| James, T.L. & Co. | St. Mary Land & Exploration Co. |
| Jan-Dal Petroleum | Same |
| JAN-DI Corp. | Judd A. Nelson, Inc. |
| Japex (U.S.) Corp. | Same (Subsid: Japan Petroleum Exploration Co.) |
| Jath Oil Company | Mack Energy Company |
| JED Oil Inc | Same |
| Jefferson Oil Corp (Dallas) | Same |
| Jergins Oil Company | Exxon Company USA |
| Jet Oil Company | Deminex U.S. Oil Corp. |
| JGM Company | Same |
| JM Petroleum Corporation | Phibro Energy, Inc. |
| JMA Energy Company, LLC | Same (Oklahoma City) |
| JMA Energy, Inc. | JMA Energy Company, LLC |
| JMA Resources, Inc. | JMA Energy, Inc. |
| JMG Exploration Inc. (Nevada) | JED Oil Inc. |
| JN Exploration & Production Limited Partnership | Same (Subsid: JN Oil and Gas, Inc.) |
| JN Oil and Gas, Inc. | Same |
| JN Petroleum Marketing, Inc. | Same (Subsid: JN Oil and Gas, Inc.) |
| J-O’B Operating | Same |
| Jocelyn-Varn Oil | Varn Oil Company |
| John D. Oil and Gas Company | Same (Cleveland, OH) |
| John I. & P.D. Moore | Same |
| Johnson, F.K. | Ambassador Petroleum Corp. |
| Jones, L.E. Operating, Inc. | Same (Affil: L.E. Jones Production Company) |
| Jones, L.E. Production Company | Same |
| Jonnell Gas Company | Chevron USA, Inc. |
| JR Oil and Gas, Inc. | Same (Houston) |
| Justice Oil Company, LLC | Justice Oil and Gas LLC |
| Justis Supply Company | Key Energy Group, Inc. |
| K | |
| K. Stewart Petroleum Corporation | Chesapeake Energy Corporation |
| K.E. Resources Ltd. | American Resources of Delaware, Inc. |
| K.R.M. Petroleum Corp. | PrimeEnergy Corporation |
| K2 Energy Corp. | Resillient Resources, Ltd. |
| Kaifser Resources | Same |
| Kaiser-Francis Oil Company | Same |
| Kallispell Glacier Park Company | Same (Affil: Meridian Oil Inc.) |
| Kaneb Energy Company | Same |
| Kaneb Production Company | Kaneb Energy Company |
| Kansas-Nebraska Natural Gas Company | K-N Energy, Inc. |
| Katz Oil Company | Sohio Petroleum Company |
| K-C Gas Company of New York | Ocean Energy, Inc. |
| KCS Energy Inc. | Petrohawk Energy Corporation |
| KCS Medallion Resources, Inc. (Tulsa) | Same (Subsid: KCS Energy Inc.) |
| KEC Acquisition Corp. | Same (Subsid: American Exploration Company) |
| Keldon Oil Company | Pittencrieff America, Inc. |
| Kelley Oil & Gas Corp. | Contour Energy Company |
| Kelley Oil & Gas Partners Ltd. | Kelley Oil & Gas Corp. |
| Kelley Oil Corp. | Kelley Oil & Gas Corp. |
| Kellog Oil Company | Richfield Oil Company |
| Kellogg Company, The M.W. | Halliburton Company |
| Kencope Energy Company | Same |
| Kennecott Corp. | Same |
| KerMac | Kerr-McGee |
| Kern County Land Company | Tenneco Oil Company |
| Kern Oil California (producing properties) | Texaco USA, Inc. |
| Kernridge Oil Company | Same |
| Kerr-McGee Corporation | Anadarko Petroleum Corporation |
| Kerr-McGee North American Onshore Corp. | Devon Energy Corporation |
| Kerr-McGee Oil & Gas Company | Same (Subsid: Kerr-McGee Corporation) |
| Kestrel Energy, Inc. | Same |
| Kewanee Oil Company | Chevron USA, Inc. |
| Key Energy Group, Inc. | Same |
| Key Production Company, Inc. | Same (Subsid: Cimarex Energy Company) |
| Keystone Asset Mgt. Inc. | Richland Resources Corp. |
| Keystone Exploration, Inc. | Same |
| Kimbark Oil & Gas Company | Halador Petroleum Company |
| Kimmerer Oil | Chevron USA, Inc. |
| Kinder Morgan Energy Partners, LP | Same |
| King Ranch Energy Inc. | St. Mary Energy Company |
| King Ranch Oil & Gas Co. | STEX Energy Company |
| Kinlaw Energy Partners, L.P. | Akin, Matthew |
| Kinsey Interests | Same |
| Kinson Resources, Inc. | Patrick Petroleum Company |
| Kirby Exploration Company | Same |
| Kirby Petroleum (Reeves) | Same |
| Kirby Petroleum (Toklan) | Kirby Petroleum (Reeves) |
| Kirby Petroleum Company | Kirby Exploration Company |
| Kirby Production Company | Kirby Exploration Company |
| Kiwanda Energy, Inc. | Argent Energy, Inc. |
| K-M Permian, Inc. | Kerr-McGee North American Onshore Corporation |
| K-N Energy, Inc. (Lakewood, CO) | Sempra Energy, Inc. |
| K-N Production Company | Tom Brown, Inc. (Midland) |
| KNDA | Chevron USA, Inc. |
| KNOC USA Corp. | Same (Affil: S. Korean Government) |
| Koch Industries, Inc. | Same |
| Koch Midstream Gas Marketing Company | Same (Subsid: Koch Industries, Inc.) |
| Koch Midstream Gasmark Company | Same (Subsid: Koch Industries, Inc.) |
| Koch Midstream Services Company | Same (Subsid: Koch Industries, Inc.) |
| KPX, Inc. | Ocean Energy, Inc. |
| Krider & Affiliates Petroleum Corp. | Monarch Petroleum Company |
| KSA Industries, Inc. | Adams Resources & Energy, Inc. |
| L | |
| L F Oil | Union Oil Company |
| L L & E | Louisiana Land & Exploration Company |
| L L & E Royalty Trust | Louisiana Land & Exploration Company |
| L. and V. Oil Company | Bell Oil and Gas Company |
| Lacy & Byrd, Inc. | Byrd Operating Co. |
| Lacy Ranch Petro Corp. | Same |
| Ladd & Lukowicz, Inc. | Eureka Oil Company |
| Ladd Petroleum Corp. | Amax Oil & Gas, Inc. |
| LAE Energy Inc. | Same (Affil: Torch Energy Corporation) |
| Lambert Oil | Cameriana Petroleum Corp. |
| Lamson Onshore Oil Corporation | Same |
| Laramide, LLC | Same |
| Laredo Energy, II, LP | Same (Subsid: Chesapeake Energy Corp.) |
| Lariat Petroleum Inc. (Tulsa) | Newfield Exploration Company |
| Lariat Services, Inc. | Same (Subsid: Sandridge Energy, Inc.) |
| Lario Oil & Gas Company | Same |
| Laser Oil Company | Same (Affil: Axem Resources Incorporated) |
| LASMO Canada, Ltd. | Elan Energy, Ltd. |
| LASMO Energy Corp. | Amerada Hess Corp. |
| LaTex Resources, Inc. | Alliance Resources PLC |
| Latigo Oil & Gas Invc. (Woodward, OK) | Same |
| Latigo Petroleum, Inc. (Tulsa) | Pogo Producing Company |
| Laurel Operating Company, Inc. | Union Pacific Resources Company |
| Lawton Oil | Colorado Oil & T & P |
| LBJ Petroleum Corp. | Earlsboro Energies Corp. |
| LDEC Acquisition Corp. | Same (Subsid: Louis Dreyfus Energy Corp.) |
| Lear Petroleum Corp. | Same |
| Lear Petroleum Partners Operating Co. LP | LPPOC |
| Leonard Oil Company | Tenneco Oil Company |
| Leredo Petroleum Inc. | Same (Tulsa) |
| Lewis Producing Company | Texaco USA, Inc. |
| Lewis Production Company | Texaco USA, Inc. |
| Lexco | Lowe Associates |
| Liberty Natural Gas Company | Seagull Energy Corporation |
| Liberty Self-Stor, Inc. | John D. Oil and Gas Company |
| Liedke | Pennzoil Company |
| Lime Rock Partners | Same (Westport, CT) |
| Limpia Royalty | Kewanee Oil Company |
| Line Oil Well Service | NOMOC Oil Company, Inc. |
| Linn Energy Inc. | Same |
| Lion | Monsanto |
| Lipan | Texota |
| Liquid Carbonic Intrastate Pipeline Company | Integrated Drilling & Exploration, Inc. |
| Little America Refining Co. | Sinclair Oil Corporation |
| Little Rock Gas & Fuel Company | Arkansas Natural Gas Company |
| Livermore, G.P., Inc. | Great Western Oil |
| Livingston Oil Company | LVO Corporation |
| Lomak Energy Services Co. | Subsid: Lomak Petroleum, Inc. |
| Lomak Petroleum, Inc. (Ft. Worth) | Range Resources Corp. |
| Lone Pine Resources Ltd. | Ocelot Energy Inc. |
| Lone Star Producing Company | Ensearch Exploration Company |
| Lonewolf Energy LLC | Lonewolf Energy, Inc. |
| Lonewolf Energy, Inc. | Same |
| Long Point Corporation | Socony Mobil Oil Company, Inc |
| Loram International | Same |
| Lorena Oil Company | Getty Oil Company |
| Los Angeles Oil and Refining Company | Richfield Oil Company |
| Los Nietos | Union Oil Company |
| Louisiana Hunt Petroleum | Same |
| Louisiana Land & Exploration Company | Burlington Resources Corp. |
| Lovelady, I.W. | Aberdeen Petroleum Corporation |
| Lowe Associates | Same |
| Lowe Partners, LP | Maralo, LLC |
| Lowe Petroleum | Maralo, LLC |
| Lowe Royalty Partners, LP | Maralo, LLC |
| Lowe, Ema | Maralo, LLC |
| Lowe, M. Ralph, Inc. | Maralo, LLC |
| Lowe, Ralph | Maralo, LLC |
| Lowe, Ralph (Estate) | Maralo, LLC |
| LPPOC | Minatome Corporation |
| LPPOC | Same |
| LRF Corp. | French Petroleum Corp. |
| Lubel Oil Company | Hutton Oil and Gas Corp. |
| Lukoil Americas Inc. | Same (Subsid: Lukoil Oil Company) |
| Lukoil Oil Company | Same (Russia) |
| Lumen Energy, Inc. (Oklahoma City) | Same |
| LVO Corporation | Utah International, Inc. |
| Lyman, C. V. (Winkler) Estate | Rycade |
| Lynx Exploration Company | Lomak Petroleum, Inc. |
| M | |
| M & M Production Co. | Tenneco Oil Co. |
| M.A.T. Oil & Gas Exploration, Inc. | Same |
| MA Resources Company, LLC | Same (Affil: JMA Energy Company, LLC) |
| Macbois Realti, Inc. | MacOil & Gas International |
| MacDonald Oil Corporation | Aberdeem Petroleum Corporation |
| Mack Energy Company | Same |
| MacOil & Gas International (Spring, TX) | Same |
| Madison Energy Corp. | Adobe Resources Corporation |
| Madison Oil Company | Toreador Resources Corporation |
| MAFCO | Chevron USA, Inc. |
| Magic Circle Energy Corp. | Same (Subsid: Carlton Resources Corp.) |
| Magna Oil Corporation | Triton Oil & Gas Corp. |
| Magness Petroleum Company | Cleary Petroleum Corporation |
| Magnolia Oil Company | Magnolia Petroleum Company |
| Magnolia Petroleum Company | Socony Mobil Oil Company, Inc. |
| Magnum Hunter Resources, Inc. | Same (Dallas) |
| Magnum Petroleum, Inc. | Magnum Hunter Resources, Inc. |
| Majestic Oilfield Services, Inc. | Same (Subsid: PetroQuest Resources Inc.) |
| Malco Refining | Hondo Oil and Gas Company |
| Mallard Bay Drilling Inc. | Parker Drilling company |
| Mallard Petroleum, Inc. | Olds Petroleum Corporation |
| Mammoth Oil Company | Berry Petroleum Corporation |
| Manhattan Resources Corp. | Manhattan Resources Ltd. |
| Manhattan Resources Ltd. | Same (Calgary) |
| Mapco Oil & Gas Company | CNG Producing Company |
| Mapco Production Company | Mapco Oil & Gas Company |
| MAPCO, Inc. | Williams Companies, The |
| Maplewood Glacier Park Company | Same (Affil: Meridian Oil Inc.) |
| Maralo Merging Corporation | Maralo, LLC |
| Maralo, Inc. | Maralo, LLC |
| Maralo, LLC (Midland) | Same |
| Marathon Oil Company | Marathon Oil Corporation |
| Marathon Oil Corporation | Same (Houston) |
| Marathon Petroleum Company | Marathon Resources Corp. |
| Marathon Resources Corp. | Same (Subsid: USX Corp.) |
| Mariner Energy, Inc. | Same |
| Mark Production Company | Mewbourne Oil Company |
| MarkWest Coalseam Development Co., Inc. | MarkWest Resources Inc. |
| MarkWest Resources Inc. | Same |
| Marland Oil Company | Marland Oil Company of Oklahoma |
| Marland Oil Company of Oklahoma | Marland Production Company |
| Marland Production Company | Continental Oil Company |
| Marline Petroleum Corporation | Cheniere Petroleum Corporation |
| Marshall Exploration, Inc. | Same (Subsid: Sonat, Inc.) |
| Martex Drilling Company, LLP | Same |
| Martin Exploration Management Company | Same |
| Martine Pipeline Co. | Same (Subsid: McGoldrick Oil Company) |
| Mass Energy Inc. | Pangaea Petroleum, Inc. |
| Masters Energy Corporation | Harken Oil and Gas, Inc. |
| Masterson, James A. | Laaramide, LLC |
| Matador Petroleum Corporation (Dallas) | Tom Brown, Inc. |
| Matagorda Bay Pipeline Company | Conquest Exploration Company |
| Matagorda Island Exploration | Same (Subskd: Anadarko Petroleum Corporation) |
| MATCO Enterprises, Inc. | PetroQuest Resources, Inc. |
| Matlin Petroleum Corporation | Same |
| Matrix Energy, Inc. | Same |
| Maudlin & Wood | Clements Energy, Inc. |
| Maxus Energy Corporation | Same |
| Maxus Exploration Company | Midgard Energy Company |
| Mayflo Oil Company | May Petroleum, Inc. |
| MC Panhandle Corp. | Chesapeake Energy Corp. |
| McAdams, Roux and Associates, Inc. | Plains Petroleum Company |
| McAlester Fuel Company | Enstar Petroleum Company |
| McClurg, M. R. & Company | High Plains Oil Corporation |
| McColl-Frontenac Oil Company, LTD | Texaco USA, Inc. |
| McCulloch Energy, Inc. | Same (Subsid: Harken Energy Corporation) |
| MCCulloch Gas Processing Crop. | MGPC, Inc. |
| McCulloch Gas Transmission Company | MGPC, Inc. |
| McCulloch Interstate Gas Corp. | MGPC, Inc. |
| McCulloch Oil Corp. of California | MCO Resources, Inc. |
| McCulloch Oil Corp. of Texas | MCR Oil Corp. of Texas |
| McCulloch Oil Exploration | McCulloch Oil Corp. of California |
| McDermott, E.H. | Wrather, J.D., Jr. |
| McElroy Ranch Company | Warren American Oil Company |
| McElvain Oil & Gas | McElvain, T. H., Oil & Gas Ltd. Partnership |
| McElvain, T. H., Oil & Gas Ltd. Partnership | Same (Affil: McElvain, T.H., Oil & Gas Ltd. Ptnshp.) |
| McElvain, T. H., Oil & Gas Properties, Inc. | McElvain, T. H., Oil & Gas Ltd. Partnership |
| McFarland Corporation | Coral Drilling |
| McFarland Energy, Inc. | Monterey Resources, Inc. |
| McFarland, Inc. & Drilling | Fluor Oil and Gas Corporation |
| McGoldrick Oil Company | Same |
| McGowen Resources Company | Same |
| McKee Petroleum Company | Mobil Oil Corporation |
| McMahon, Inc., C.L. | Forest Oil Company |
| McMan Oil & Gas Company | AMOCO Production Company |
| McMoran Exploration Company | McMoran Offshore Expl. Company |
| McMoran Offshore Exploration Company | Same |
| McMoran Offshore Management Company | McMoran Offshore Expl. Company |
| McMoran Offshore Production Company | McMoran Offshore Expl. Company |
| McMoran Oil & Gas Company | McMoran Offshore Expl. Company |
| McMoran Production Company | McMoran Offshore Expl. Company |
| McMoran-Freeport Oil Company | McMoran Offshore Expl. Company |
| McMoran-Freeport Oil Company of Oklahoma | McMoran-Freeport Oil Company |
| MCN Corporation | Same |
| MCNIC Oil & Gas Co. | Same (MCN Investment Corp.) Subsid: MCN Corporation |
| MCNIC Oil & Gas Midcontinent, Inc. | Same (MCN Investment Corp.) Subsid: MCN Corporation |
| MCO Holdings, Inc. | UMC Petroleum Corporation |
| MCO Resources (Integrated) Corp. | Same (Subsid: MCO Holdings, Inc.) |
| MCO Resources Belize Corp. | MCO Resources, Inc. |
| MCO Resources Spectrum Corp. | MCO Resources, Inc. |
| MCO Resources, Inc. | MCO Holdings, Inc. |
| MCOR Oil & Gas Corporation | MCO Resources, Inc. |
| MCOR Oil Development, Inc. | MCO Resources, Inc. |
| MCOR Oil Exploration, Inc. | MCO Resources, Inc. |
| MCR Exploration, Ltd. | MCO Resources, Inc. |
| MCR Newcorp, Inc. | MCO Resources Spectrum Corp. |
| MCR Oil Corp. of Texas | MCO Resources, Inc. |
| McRae Exploration | Lear Petroleum |
| McRae Oil & Gas Corp. | Sipco, Inc. |
| McWilliams Moffitt | McMoran Oil & Gas Company |
| MDU Resources Group Inc. | Same |
| Meade Energy Corporation | Same (Oklahoma City) |
| Meadow View, Inc. | Conquest Exploration Company |
| MEC Exploration, Ltd. Partnership 1989-A | Midwest Energy Companies, Inc. |
| MEC, Inc. | Midwest Energy Corp. |
| Mecom Oil | Same |
| Medallion Oil Company | GHR Energy (Goodhope) |
| Medallion Petroleum, Inc. | Same (Affil: Brighton Energy, L.L.C.) |
| Medallion Production Company | InterCoast Oil and Gas Company |
| Medicine Bow Energy Corp. | El Paso Corp. |
| Mega Natural Gas Company (merger) | Associated Natural Gas, Inc. |
| Meridian Oil Inc. | Burlington Resources Oil & Gas Company |
| Meridian Oil Offshore Inc. | Burlington Resources Offshore Inc. |
| Meridian Oil Production Company | Burlington Resources Oil & Gas Company |
| Meridian Oil Trading Inc. | Burlington Resources Trading Inc. |
| Meridian Resources Corp. | Same |
| Merit Energy Corp. | BCF Resources, Inc. |
| Merit Partners LP | Same |
| MeritNet Partners, LP | Merit Partners LP |
| Mesa Inc. | Pioneer Natural Resources USA, Inc. |
| Mesa Limited Partnership | Mesa Inc. |
| Mesa Operating Company | Mesa Inc. |
| Mesa Operating Limited Partnership | Pioneer Natural Resources USA, Inc. |
| Mesa Petroleum Company | Pioneer Natural Resources USA, Inc. |
| Mewbourne Oil Company | Same |
| Mexco Energy Corporation | Same (Midland, TX) |
| MGF Oil Corporation | Southmark Corp. |
| MGPC, Inc. | MCO Holdings, Inc. |
| MGPC, Inc. (Powder River Basin Area) | Western Gas Processors, Ltd. |
| Michcon | MCN Corporation |
| Michigan Consolidated Gas Co. | Same (Subsid: MCN Corporation) |
| MidAmerica Energy Company | Same |
| Mid-America Pipeline Company | Enterprise Products Partners, LP |
| Mid-America Resources, Inc. | Seaboard Oil Company |
| Mid-American Investment Corp. | Conquest Exploration Company |
| Mid-American Minerals, Inc. | Calvert Exploration Company |
| Midcon | Same |
| MidCon Central Exploration | Apache Corporation |
| Mid-Continent Management Corporation | Petrodynamics, Inc. |
| Mid-Continent Petroleum | Sun Expl. & Prod. Company |
| Middle Bay Oil Co., Inc. | 3Tec Energy Corp. |
| Middle States Oil Company | Midstates Oil Company |
| Middle States Petroleum Corporation | Tennessee Gas Transmission Company |
| Mid-East Oil Company | M.A.T. Oil & Gas Exploration, Inc. |
| Midgard Energy Company | Crescendo Resources, L.P. |
| Mid-Kansas Oil & Gas Company | Marathon Oil Company |
| Midland Acquisition Corp. | Key Energy Group, Inc. |
| Midland Resources, Inc. (Houston) | Same |
| Midland Southwest Corporation | M.A. Hanna Company |
| Midlands Gas Corp. | McMoran Oil & Gas Company |
| Midpar, LP | Parker and Parsley Development Partners, LP |
| Midstates Oil Company | Finlay Energy Corp. |
| Midstates Oil Corporation | Middle States Petroleum Corporation |
| Mid-States Oil Corporation | Tenneco Oil Company |
| Mid-Tex Oil & Gas | Grove Oil & Gas |
| Midway and Northwood | Reno Oil Company |
| Midwest Energy Companies Inc. (Tulsa) | Clayoquot Resources, Ltd. |
| Midwest Energy Company, Inc. | Midwest Resources, Inc. |
| Midwest Energy Corp. | Same (Subsid: Midwest Energy Companies) |
| Midwest Exploration Company | AMOCO Production Company |
| Midwest Oil Corporation | Amoco Production Company |
| Midwest Production Company | Kirby Petroleum Company |
| Midwest Resources, Inc. | MidAmerica Energy Company |
| Mid-Western Gas Transmission | Tenneco Oil Company |
| Milestone | El Paso Natural Gas Company |
| Milestone Petroleum Inc. | Meridian Oil, Inc. |
| Miller Oil Company, Inc. (Midland) | Mexco Energy Corporation |
| Minatome Corporation | Total Minatome Corporation |
| Minden Oil & Gas, Inc. | Same |
| Minerals Management Group, Inc. | Same (Subsid: Hinkle Engineering, Inc.) |
| Minnehoma Oil Company | Getty Oil Company |
| Mission Corporation | Getty Oil Company |
| Mission Development Company | Getty Oil Company |
| Mission Exploration, Inc. | Mission Resources, Inc. |
| Mission Land Acquisition Company | Mission Resources, Inc. |
| Mission Production Company | Mission Resources, Inc. |
| Mission Resource Partners, L.P. | Same (Subsid: Mission Resources, Inc.) |
| Mission Resources | Mission Resources, Inc. |
| Mission Resources Corp. | Petrohawk Resources Corp. |
| Mission Resources, Inc. | Mission Resources, Corp. |
| Mississippi River Corporation | Natural Gas & Oil Corporation |
| Mississippi River Trans. Corp. | Champlin Petroleum Company |
| Missouri Valley Pipeline Company | Northern Gas and Pipeline Company |
| Mitchell Energy Corp. | Devon Energy Corporation |
| Mitchell Energy Development | Same (Subsid: Mitchell Energy Corp.) |
| Mitchell Energy Production Company | Mitchell Energy Corp. |
| MJB Company | Same (Affil: Torch Energy Corporation) |
| Mobil G. C., Inc. | Same |
| Mobil Oil Corporation | ExxonMobil Corp. |
| Mobil Producing Texas New Mexico | Same |
| MOG Exploration, Ltd. | MCO Resources, Inc. |
| Mohawk Petroleum Company | Reserve Oil and Gas Company |
| Monark Petroleum Company | Uniok Energy Corporation |
| Moncrief, W.A. | Same |
| Mon-Dak Oil Corporation | Socony Mobil Oil Company, Inc. |
| Monday Oil Company | Getty Oil Company |
| Monogram Oil & Gas, Inc. | Lomak Petroleum, Inc. |
| Monsanto Oil Company | BHP Petroleum Company Inc. |
| Montana-Dakota Utilities | MDU Resources Group |
| Monte Carlo Exploration, Inc. | Rebel Exploration, Inc. |
| Montecito Corporation | Forchall Oil |
| Monterey Oil & Gas | Conoco Inc. |
| Monterey Oil Company | Esso Standard Oil Company |
| Monterey Resources, Inc. | Texaco USA, Inc. |
| Montex Exploration Company | Same |
| Monument Resources Inc. (Colorado) | Same |
| Monza Oil Corporation | Estoril Producing Corporation |
| Moore Exploration | John I. & P.D. Moore |
| Moore McCormack Company | Moore McCormack Energy Co. |
| Moore McCormack Energy Co., Inc. | CXY, Inc. |
| Mooreland Oil & Gas, Ltd. | Ventura Energy, Inc. |
| Moran Brothers | Same |
| Moran Exploration, Inc. | Kaneb Production Company |
| Morgan Gulf Corporation | AMOCO Production Company |
| Moseley Petroleum Corporation | Triton Oil & Gas Corp. |
| Moss Petroleum Company | Petco, Inc. |
| Moss, P. | Union Oil Company |
| Mosswood Oil & Gas Ltd. | Same (Subsid: Noble Affiliates Inc.) |
| Mountain & Plains Oil Company | Aberdeen Petroleum Corporation |
| MPTNM, Inc. | Mobil Prod. Of Tex & New Mex. |
| M-R Holdings Acquisition Company | Same (Affil: Meridian Oil Inc.) |
| M-R Holdings Inc. | Same (Affil: Meridian Oil Inc.) |
| MRM Oil & Gas, Inc. | Coda Energy, Inc. |
| MSR Exploration LTD. | Same |
| MTS Limited Partnership | Mesa, Inc. |
| Multistates Oil Properties N.V. | Mesa, Inc. |
| Multistates Oil Properties, Inc | Mesa, Inc. |
| Munance Corp. | Atlantic Refining Company |
| Murchison Exploration, Inc. | Murexco Petroleum, Inc. |
| Murexco Petroleum, Inc. | Same |
| Murphy Oil Company of Oklahoma, Inc. | Chevron USA, Inc. |
| Murphy Oil Corporation | Same (El Dorado, AR) |
| Murphy Oil USA, Inc. | Same (Subsid: Murphy Oil Corporation) |
| Murwell Resources Ltd. | Same |
| Mustang Energy Corp. | Mustang Fuel Corporation |
| Mustang Fuel Corporation | Same |
| Mustang Oil & Gas Corp. | Same (Subsid: Gulf Resources Corp.) |
| Mustang Production Company | Mustang Fuel Corporation |
| Mustang Services Company | Mustang Fuel Corporation |
| Mustang Services International Company | Mustang Fuel Corporation |
| Muzzstang Ventures Company | Mustang Fuel Corporation |
| MW Petroleum Corporation | Same (Subsid: Apache Corporation) |
| MWJ Producing Company | Ocotillo |
| MzRL Partners, LP | Maralo, LLC |
| N | |
| N.E. Financial Inc. | Same (Affil: Torch Energy Corporation) |
| Nabors Industries, Inc. | Same |
| Nadel and Gussman, Inc. | Same (Tulsa) |
| Nalley Steel | Schlacter, D.A. |
| Nance Petroleum Corporation | Same ( Subsid: St Mary Land & Exploration Co.) |
| Nanome Aggregates Inc. | Same (Affil: Meridian Oil Inc.) |
| National Energy Group, Inc. | Same |
| National Exchange, Inc. | Same (Affil: Meridian Oil Inc.) |
| National Exploration | Rosewood Resources |
| National Petroleum Company | Richfield Oil Company |
| National-Oilwell Inc. | National-Oilwell Varco Inc. (Houston) |
| Natomas Company | Diamond Shamrock Exploration Co. |
| Natomas Exploration Company | Natomas North America, Inc. |
| Natomas North America, Inc. | Diamond Shamrock Exploration Co. |
| Natomas of Oklahoma, Inc. | Natomas North America, Inc. |
| Natural Gas & Oil Corporation | Same |
| Natural Gas Corporation of California | Pacific Gas & Electric Company |
| Natural Gas Dynamics, Inc. | American National Petroleum Co. |
| Natural Gas Partners, LLC | Merchant Gas Partners, LLC (Affil: Aquilla Energy Corp.) |
| Natural Resource Management Corp. | Edisto Resources Corp. |
| Natural Resources Compressor Company | Same (Subsid: NJR Energy Corporation) |
| Natural Resources Corporation | Ocean Energy, Inc. |
| Nava Tex Drilling Company | Benz Oil Corporation |
| Navajo Refining Inc. | Same (Subsid: Holly Corporation) |
| Navarro | Conoco Inc. |
| Navidad Oil & Gas Company | Boltex Oil & Gas Company |
| Nearbug, E.E. | Nearbug Producing Company |
| Nearburg Producing Company (Midland, TX) | Same |
| Neely & Neely | Iron Mountain Oil Company |
| NEG Oil & Gas LLC (Carl Icahn) | SandRidge Energy, Inc. |
| NEI Arkansas Gathering, Inc. | Warren Arkansas Gathering, Inc. |
| Nelson Petroleum Company | Grace Petroleum Corporation |
| Nelson, Inc., Judd A. | Americex, Inc. |
| Nelson, W. Paul & Company | Same |
| Nerco Oil & Gas, Inc. | Louisiana Land & Exploration Co. |
| NERCO, Inc. | Kennecott Corp. |
| Nerox Energy Corporation (Upland, CA) | Same |
| New Jersey Natural Resources Company | Same (Subsid: NJR Energy Corporation) |
| New London Resources Inc. | Same (Subsid: New London Inc.) |
| New Mexico San Juan Natural Gas Company | Delhi-Trading Incorporated |
| New Pacific Ventures (Denver) | Tatonka Oil and Gas Inc. |
| New World Development Co., Ltd. | Same |
| New Zealand CQX Limited | Same (Subsid: Louis Dreyfus Natural Gas Corp.) |
| Newfield Exploration Company | Same (Houston) |
| Newmont Oil Company | Mobil Oil Corporation |
| Newport Petroleum Corporation (Calgary) | Hunt Oil Company |
| Newstar Energy Inc. | Newstar Resources Inc. |
| Newstar Resources Inc. | Same |
| NEXCO Inc. | Same (Subsid: Noble Affiliates Inc.) |
| Nexen Inc. | Same |
| NFC Corporation | MGF Oil Corporation |
| NGC Energy Resources, Ltd. Partnership | Warren Energy Resources, Ltd. Partnership |
| NGC Energy, Inc. | Warren Energy, Inc. |
| NGC Liquids Marketing, Inc. | Warren Gas Liquids, Inc. |
| Niagara Mohawk Power Corp. | Same |
| Nicklos Oil & Gas Company | Same |
| Nicor Exploration and Production Company | Scana Petroleum Resources, Inc. |
| Nicor Exploration Company | Scana Petroleum Resources, Inc. |
| Nicor, Inc. | Same |
| Ni-Gas, Inc. | Nicor Exploration Company |
| Nimrod Natural Gas Company | Lumen Energy, Inc. |
| Ninian Oil Company | Same (Subsid: American Exploration Company) |
| Ninian Oil Finance Corp. | Same (Subsid: American Exploration Company) |
| NiSource, Inc. | Same |
| NJR Energy Corporation | Same |
| NJRE Operating Company | Same (Subsid: NJR Energy Corporation) |
| Noble Affiliates Inc. | Noble Energy Inc. |
| Noble Energy Inc. | Same (Houston) |
| Noble, I. | Samedan Oil Corporation |
| Nolonger Fuel Co., Inc. | Mustang Production Company |
| Nomac Drilling Corporation | Same (Subsid: Chesapeake Energy Corporation) |
| NOMECO Oil & Gas Company | Same |
| NOMOC Oil Company, Inc. | Same |
| NorAm Energy Corp. | Same |
| Noranda Oil Corporation | Frontier Oil & Gas Co., Inc. |
| Norcen Energy Resources Ltd. | Union Pacific Resources Group, Inc. |
| Norcen Explorer, Inc. | Same |
| Nordan Corporation Ltd. | TIPCO |
| Norex Drilling, Inc. | Same |
| Norfitt | American Petrofina Co. of Texas |
| Norfok Holdings Inc. | UMC Petroleum Corporation |
| Norman Corporation of Caddo, Inc. | Kinsey Interests |
| Normandy Oil & Gas Co. | Same |
| Norris Oil Company | Berry Petroleum Corporation |
| Nortex Gas & Oil Company | BelNorth Petroleum Corporation |
| North American Oil Consolidated | Phillips Petroleum Company |
| North American Royalties, Inc. | Same |
| North Canadian Oils Ltd. | Same |
| North Carolina Natural Gas Corp. | Sonat Inc. |
| North Central Oil Corp. | Pogo Producing Company |
| North Finn LLC | Same |
| North Star Resources, Inc. | Same |
| Northern Fuel Supply Company | Northern Natural Gas Company |
| Northern Gas and Pipeline Company | Northern Natural Gas Company |
| Northern Michigan Exploration Company | NOMECO Oil & Gas Company |
| Northern Natural Gas Company | Dynegy Inc. |
| Northern Natural Gas Producing Company | Mobil Oil Corporation |
| Northern Plains Natural Gas Company | ONEOK, Inc. |
| Northern Plains Oil & Gas Company | Gopher Oil & Gas Company |
| Northern Plains Railroad Company | Same (Affil: Meridian Oil Inc.) |
| Northern Reef Exploration Ltd. | Same |
| Northern Rockies Pipeline Company | Same (Affil: Meridian Oil Inc.) |
| Northland Operating Company | DevX Energy Inc. |
| Northrock Resources, Inc. | Same |
| Northstar Energy Corp. (Calgary) | Same (Subsid: Devon Energy Corp.) |
| Northwest Energy | Cities Service Oil & Gas Corp. |
| Northwest Production Company | Same (Affil: Meridian Oil Inc.) |
| Norwegian Oil Corporation | J.F. Dougherty Company |
| Nu West Development | Same |
| Nucorp Energy Company, Inc. | Nucorp Energy, Inc. |
| Nucorp Energy, Inc. | Pin Oak Petroleum, Inc. |
| Nuevo Denaro Petroleum Company | Fox Production Corporation |
| Nuevo Energy Company | Plains Exploration and Production Co. |
| Numac Oil & Gas Ltd. | Same |
| NUMBERED ENTITIES | |
| Nutek Inc. | Same (Lake Forest, CA) |
| Nutek Oil Inc. | Same (Subsid: Nutek Inc.) |
| Nycal Corp. | Same |
| O | |
| O.E.I. Trust, The | Same (Affil: The GHK Company) |
| O.E.I., L.L.C. | Same (Affil: The GHK Company) |
| Occidental Oil and Gas Corp. USA | OXY USA, Inc. |
| Occidental Petroleum Corp. | Same |
| Occidental Petroleum Ltd. (Canada) | Nexen, Inc. |
| Ocean Drilling & Exploration | ODECO |
| Ocean Energy Resources, Inc. | Devon Energy Corporation |
| Ocean Energy, Inc. | Devon Energy Corporation |
| Ocean Oil & Gas | ODECO |
| Oceanic Oil | Producing Properties, Inc. |
| Ocelot Energy Inc. | Same (Subsid: Industries Inc.) |
| Ocelot Oil Company | Enron Oil & Gas Company |
| Ocotillo | Same |
| ODECO | Murphy Oil Corporation |
| Odessa Exploration, Inc. | Key Energy Group, Inc. |
| Odessa Natural Corporation | Same (Affil: Meridian Oil Inc.) |
| Odyssey Energy Inc. | Hardy Oil & Gas USA Inc. |
| Odyssey Oil and Gas Inc. | Hardy Oil & Gas USA Inc. |
| Offshore Energy Investments, Inc. | Same (Affil: The GHK Company) |
| Ohio & Plymouth | Marathon Petroleum Company |
| Ohio Cities Gas Company | Union Oil Company of California |
| Ohio Oil Company | Marathon Petroleum Company |
| Oil & Gas Futures | Out of business |
| Oil & Gas Properties Company | Chevron USA, Inc. |
| Oil Acquisitions, Inc. | Same |
| Oil Development Company of Utah | Santa Fe Energy |
| Oil Investors, Inc. | MCO Resources, Inc. |
| OKC Limited Partnership | Box Energy Corporation |
| Oklahoma Acquisition Corp. | Tutamian Production Corporation |
| Oklahoma Basic Economy Corporation | Same (Subsid: Ascent Energy Inc.) |
| Oklahoma Natural Gas Company | Same |
| Oklahoma Oil Company | Tidal Oil Company |
| Okland Oil Company | Same |
| Old Ben coal | Sohio Petroleum Company |
| Old Ocean Oil Company | AMOCO Production Company |
| Olds Petroleum Corporation | Ladd Petroleum Corporation |
| Oleum, Inc. | Diamond Shamrock Exploration Co |
| Oliver Resources, PLC | Dragon Oil, PLC |
| Olix Industries, Inc. | Adobe Oil and Gas Corp. |
| Olsen | Jal Oil Company |
| Olsen & Jal | Texas Pacific Oil Company |
| Olsen, Fred, Inc. | Volvo Petroleum |
| Olympia Energy Corp. | Magic Circle Energy Corp. |
| Olympia Energy Ventures, Ltd. | International Colin Energy Corp. |
| Olympic Resources, Ltd. | Whittier Energy Corp. |
| Omega – Smith Energy, Inc. | Smith Energy Associates, Ltd. |
| Omega Corporation | Omega – Smith Energy, Inc. |
| Omimex Resources, Inc. | Same |
| Omni Exploration Inc. | Claim Energy USA |
| Omni Petroleum Corporation | Same |
| Omni Power Inc. | Same |
| Onasco Companies, Inc. | Tengasco, Inc. (Knoxville, TN) |
| ONEOK Exploration Co. | Same (Subsid: ONEOK Resources Company) |
| ONEOK Resources Company (Tulsa) | TXOK Acquisition Inc. (transfer of production companies only – not utilities) |
| ONEOK, Inc. | Same |
| Onshore Oil Corporation | Lamson Onshore Oil Corporation |
| Opinac Exploration, Ltd. | Tarragon Oil & Gas, Ltd. |
| OPUBCO Energy Inc. | Same (Subsid: Oklahoma Publishing Co.) |
| Ora Oil Company | Smith & Company |
| Orbit Oil & Gas, Inc. | Sunoma Energy, Inc. |
| Orion Drillings Funds (various years) | Ocean Energy, Inc. |
| Orlando Resources Ltd. | Tornado Resources Ltd. |
| ORRI, Inc. | Same (Affil: The GHK Company) |
| Oryx Energy Company | Kerr-McGee Corporation |
| Osage Milestone Petroleum | Same (Affil: Meridian Oil Inc.) |
| Osca, Inc. (Lafayette) | BJ Services Company |
| Ottawa Energy, Inc. | Same |
| Output Exploration, LLC (San Antonio) | TXCO Resources Inc. |
| Owl Petroleum Company | Same |
| Owl Petroleum Company, Expl. & Prod. | Subsid: Owl Petroleum Company |
| Oxford Consolidated, Inc. | Same |
| Oxford Exploration | Oxford Consolidated, Inc. |
| Oxley Petroleum Co. (Tulsa) | Chesapeake Energy Corporation |
| Oxley, John C. Oil Producer | Oxley Petroleum Co. |
| Oxoco Exploration Corp. | American Nat’l Petroleum Co. |
| Oxoco Oil & Gas, Inc. | American Nat’l Petroleum Co. |
| Oxoco Production Corp. | American Nat’l Petroleum Co. |
| Oxoco, Inc. | American Nat’l Petroleum Co. |
| Oxoco-Texas, Inc. | American Nat’l Petroleum Co. |
| OXTEX, Inc. | American Nat’l Petroleum Co. |
| Oxy Petroleum Inc. | Cities Service Oil & Gas Corp. |
| OXY USA Inc. | Same (Subsid: Occidental Oil and Gas) |
| P | |
| P & O Falco, Inc. | Union Texas Petroleum Corp. |
| P & O Oil Corporation | Same (Affil: Meridian Oil Inc.) |
| P & P Producing Inc. | Midpar LP |
| P & P Producing Texas, Inc. | P & P Producing Inc. |
| P O R Oil & Gas Inc. | Norcen Explorer, Inc. |
| P.P.M. Investments (USA), Inc. | India Temple Minerals Co. |
| Pacer Development | Pacer Petroleum Inc. |
| Pacer Petroleum Inc. | Same |
| Pacific Energy Investments, Inc. | Devon Energy Corporation |
| Pacific Energy Partners, LP | Same (Affil: Anschutz) |
| Pacific Enterprises Oil Company | Hunt Oil Company (See Notes in back) |
| Pacific Enterprises Royalty Company | Pacific Enterprises Oil Company |
| Pacific Enterprises, Inc. | Sempra Energy, Inc. |
| Pacific Gas & Electric Company | Same |
| Pacific Gas & Electric Supply Company | NGC Energy Company |
| Pacific Petroleum | Petro-Canada |
| Pacific Power and Light Co. | Same |
| Pacific Transmission Supply Company | Pacific Gas & Electric Supply Company |
| Pacific Union | Texas American Oil Corp. |
| Pacific Western Oil Corporation | Getty Oil Company |
| Packaging Research Corporation | Same |
| Paco Integrated Energy Inc. (Houston) | Same |
| Paco Oil & Gas Inc. | Paco Integrated Energy Inc. |
| Pampas Investments, Ltd. | Same (Affil: The GHK Company) |
| Pan American Petroleum Corp. | Amoco Production Company |
| Pan Energy Field Services, Inc. | Duke Energy Field Services, Inc. |
| Pan Ocean | Marathon Petroleum Company |
| Pan Ocean Energy Corporation Ltd. | Addax Petroleum Corporation |
| Pan Petroleum MLP | Panaco, Inc. |
| Panada Resources Corporation | LaTex Resources, Inc. |
| Pancana Industries, Inc. | Pancana Minerals, Inc. |
| Pancana Minerals, Inc. | Same |
| PanCanadian Energy Corp. | EnCana Oil & Gas, Ltd. |
| Pancanadian Petroleum Company | PanCanadian Energy Corp. |
| PanEnergy Corporation | Duke Energy, Inc. |
| Pangaea Petroleum Corp. | Same (Houston) |
| Panhandle Eastern Corporation | PanEnergy Corporation |
| Panhandle Oil and Gas, Inc. | Same |
| Panhandle Oil Corporation | American Petrofina Co. of Texas |
| Panhandle Royalty Company | Panhandle Oil and Gas, Inc. |
| Panhandle Western Gas Company | APX Western Corporation |
| Pantera Energy Corp. | HS Resources, Inc. |
| Panther Energy Company, LLC | Same (Tulsa) |
| Paracon Petroleum, Inc. | Cypher Energy Corporation |
| Paragon Petroleum Corp. | Northrock Resources, Inc. |
| Paragon Petroleum Ltd. | Paragon Petroleum Corp. |
| Paramount Petroleum Co. | Same (Affil: Torch Energy Corporation) |
| Paramount Resources Ltd. | Same (Seattle, Calgary) |
| Park Avenue Exploration Crop. | PetroCorp, Inc. |
| Park Oil | Martin Exploration Mgt. Company |
| Parker & Parsley Development Partners, LP | Parker & Parsley Petroleum Company |
| Parker & Parsley Petroleum Company | Pioneer Natural Resources USA, Inc. |
| Parker Drilling Company | Same |
| Parker Energy Resources, Inc. | Same |
| Parker Industries, Inc. | Same (Subsid: Homco International, Inc.) |
| Parker Oil and Gas Company | Ladd Petroleum Corp. |
| Parker Petroleum Corp. | Western Oil Fields, Inc. |
| Parragon Petroleum, Inc. | South Hampton Mineral Corp. |
| Parson Oil LLC | Same |
| Parson, Elmer S., Jr. | Parson Oil LLC |
| Partners Oil Company | Cedyco Corporation |
| Pasco, Inc. | Little America Refining Co. |
| Pasotex Petroleum | The California Company |
| Pathfinder Petroleum Corp. | Energy Investments |
| Patina Oil & Gas Corporation | Noble Energy Inc. |
| Patrick Petroleum Company | Goodrich Petroleum, Inc. |
| Patterson Energy, Inc. (Snyder, TX) | Same |
| Paul Revere Management Corp. | Same |
| Pauley Petroleum, Inc. | Hondo Oil & Gas Co. (New 1989 not ARCO) |
| Pax Petroleum, Inc. | Petrodynamics, Inc. |
| P’Bell Energy Company | MCNIC Oil & Gas Midcontinent, Inc. |
| PCTC – Oregon, Inc. | Same (Affil: Meridian Oil Inc.) |
| PCTC – Skykomish, Inc. | Same (Affil: Meridian Oil Inc.) |
| PCTC, Inc. | Same (Affil: Meridian Oil Inc.) |
| Peak Energy Resources, Inc. | XTO Energy, Inc. |
| Peake Energy, Inc. | Beldon & Blake Corporation |
| Peake Operating Company | Beldon & Blake Corporation |
| Pease Oil and Gas Company | Republic Resources, Inc. (Grand Junction, CO) |
| Pecos Company | Same (Affil: Meridian Oil Inc.) |
| Pecos Exploration Company | ALCO Oil & Gas Corporation |
| Pecos Production Company | Chesapeake Energy Corporation |
| PEDCO Resources Company | Same |
| Peerless Oil & Gas Company | Fluor Oil and Gas Corporation |
| Peerless Oil Producing Company | Peerless Oil & Gas Company |
| PEI of Texas | Mesa, Inc. |
| Peltex | McMoran Oil & Gas Company |
| Pelto Oil Company | Southdwon, Inc. |
| PEMC U.S., Inc. | Devon Energy Corporation |
| PEMC, Inc. | Devon Energy Corporation |
| Penaco, Inc. | Same |
| Penn Central | Same |
| Penn West (Denver, Calgary) | Same |
| Penn West Energy Trust | Penn West |
| Pennaco Corporation | Out of Business (Liquidated in Bankruptcy) |
| Pennaco Drilling, Inc. | Out of Business (Liquidated in Bankruptcy) |
| Pennaco Energy, Inc. | Same (Subsid: Marathon Oil Company) |
| Pennaco Oil Company, Inc. | Out of Business (Liquidated in Bankruptcy) |
| Pennaco Oil Corporation | Out of Business (Liquidated in Bankruptcy) |
| Pennant Leasing, Inc. | Devon Energy Corp. |
| Pennetex Petroleum Company | Tidewater Oil Company |
| Pennsylvania Castle Energy Corp. | Same |
| Pennsylvania Refining Company | Penreco, Inc. |
| Penntex Petroleum & Land Co. | Tidewater Oil Company |
| Penn-Virginia Resources Corp. | Same |
| PennzEnergy Company | Devon Energy Corporation |
| PennzEnergy Exploration & Production, LLC | Devon Energy Corporation |
| Pennzoil Company | Pennzoil-Quaker State Company |
| Pennzoil Exploration & Production Co. | Pennzoil Company |
| Pennzoil United | Pennzoil Company |
| Pennzoil-Quaker State Company | Shell Oil Company |
| Penreco, Inc. | Same (Subsid: Pennzoil Company) |
| Penrose Production Company | Sohio Petroleum Company |
| Penrose, N.G., Inc. | Sohio Petroleum Company |
| Peoples Energy Corp. | Same (Chicago) |
| Peoples Energy Production Company | El Paso Exploration and Production Company |
| Peoples Natural Gas Company | Sun Oil Line Company |
| Peplin Oil Company (Stillwater, OK) | Crown Partners, LLC |
| Peppers Refining Company | Champlin Refining Company |
| Perfection Inspection Company | Dyco Petroleum Corporation |
| Permian Basin Pipeline Company | Northern Natural Gas Company |
| Permian Basin Trust | Same (Affil: Meridian Oil Inc.) |
| Permian Corporation | Scurlock Permian Corp. (Subsid: Ashland Oil Inc.) |
| Permian Oil | Permian Corporation |
| Permian Resources Co. | Same (Subsid: Chesapeake Energy Corp) |
| Perry Energy Corp., Inc. | Parker Energy Resources, Inc. |
| Petco (Petroleum Corp. of Texas) | Breck Operating Corporation |
| Petco, Inc. | Same |
| Petro Well Services Inc. | CenAlta Energy Services Inc. |
| Petro-Canada | Suncor Energy Inc. |
| Petrocarbons, Inc. | Columbia Petroleum Corporation |
| PetroCorp | PetroCorp, Inc. |
| PetroCorp, Inc. | Unit Corporation |
| Petrodel Exploration, Inc. | Petrofina Delaware, Inc. |
| Petrodynamics, Inc. | Citrus County Land Bureau, Inc. |
| Petrodyne Industries, Inc. | Petrodynamics, Inc. |
| Petro-Energy Exploration Inc. | Faulkner Corp. |
| Petrofina Canada | Petro-Canada |
| Petrofina Delaware, Inc. | American Petrofina, Inc. |
| Petrofina Exploration, Inc. | American Petrofina, Inc. |
| Petrofina, SA (Belgium) | Total, SA |
| Petroglyph Energy Inc. | Same (Hutchison, KS) |
| Petroglyph Energy Inc. | Same (Hutchison, KS) |
| Petrohawk Energy Corporation | Same (Houston) |
| Petrohawk Operating Company | Same (Subsid: Petrohawk Energy Corp.) |
| Petroleum Corp. of Delaware, The | Same (Subsid: Presidio Oil Company) |
| Petroleum Corporation of Texas | Petco, Inc. |
| Petroleum Development Corporation | Same (Bridgeport, W. VA) |
| Petroleum Exploration and Technology, Inc. | Same (Los Angeles) (Subsid: Daugherty Resources, Inc.) |
| Petroleum Inc. | Same (Tulsa) |
| Petroleum Int’l Associates, Inc. | Hydro Carbon Trading-Transport |
| Petroleum Investments, Ltd. | Bradmar Petroleum Corporation |
| Petroleum Reserve Corp. | Castle Energy Corp. |
| Petro-Lewis Corp. | Same |
| Petro-Lewis of Lear Petroleum | Same |
| Petrolith Inc. | Unibar Energy Services Inc. |
| Petromark Merger Company | Petromark Resources Company |
| Petromark Resources Company | PEDCO Resources Company |
| PetroQuest Resources, Inc. | Same (Arlington, TX) |
| Petroro Corporation | Captiva Resources, Inc. |
| PetroSearch Energy Corp (Houston) | Double Eagle Petroleum Co. |
| Petrosearch Energy Corp. (Houston) | Same (Subsid: Double Eagle Petroleum Co.) |
| Petrotech Energy Group, Inc. | Same |
| Petrotide Ltd. | Posse Energy Ltd. |
| Petrotiger II Ltd. | Posse Energy Ltd. |
| PETX Petroleum corp. | Anchor Bay Corp. |
| Pexamin Pacific, Inc. | Independent Exploration Company |
| PG&E Enterprises | Same (Subsid: Pacific Gas and Electric Company) |
| PG&E Gas Supply Company | NGC Energy Company |
| PG&E Resources Company | Same (Subsid: Pacific Gas and Electric Company) |
| Phibro Energy, Inc. | Basis Petroleum, Inc. |
| Philbro Oil & Gas Corp. | IDC Energy Corp. |
| Phillips Oil Company | Phillips Petroleum Company |
| Phillips Petroleum Company | ConocoPhillips |
| Phoenix Energy Company | Same |
| Phoenix Operating Company | Same |
| Phoenix Resources Co. | TIPCO |
| Phoenix Resources Companies, Inc. | Same (Subsid: Apache Corporation) |
| Piaga, Inc. | Mesa, Inc. |
| Piedmont Petroleum Corp. | Southwestern Production Corp. |
| Pilgrim Exploration | American Energy Exploration Co. |
| Pin Oak Petroleum, Inc. | Same |
| Pincher Creek Ranch | Same (Affil: Meridian Oil Inc.) |
| Pinto, Joseph | Same |
| Pioneer Coal company | Mesa Petroleum Company |
| Pioneer Corporation | Mesa Petroleum Company |
| Pioneer Houston, Inc. | Mesa Petroleum Company |
| Pioneer Natural Resources Co. | Same (Dallas) |
| Pioneer Natural Resources USA, Inc. | Same (Dallas) |
| Pioneer Nuclear, Inc. | Mesa Petroleum Company |
| Pioneer Production Corp. | Mesa Petroleum Company |
| Pittencrieff America, Inc. | Same (Abilene) |
| Place Resources Corp. | Star Oil & Gas Acquisitions, Ltd. |
| Placid Oil Company | Same |
| Plains Exploration & Production Co. | Same (Subsid: Plains Resources, Inc.) |
| Plains Petroleum Company | Barrett Resources Corp. |
| Plains Resources, Inc. | Same (Houston) (Subsid: Vulcan Capital) |
| Plano Petroleum Corp. | Trousil and Associates Inc. |
| Platinum Energy Resources, Inc. | Same |
| Platt Energy Corp. | United States Borax & Chemical Corp. |
| Playa Minerals & Energy Inc. | Vulcan Minerals & Energy Inc. |
| Pleasant Valley Energy Company | Same (Subsid: Tri-Valley Corporation) |
| Plotner Oil and Gas Company | Silverridge Corp. |
| Plum Creek Timber Company | Same (Affil: Meridian Oil Inc.) |
| Plymouth Oil Company | Ohio Oil Company |
| Poco Petroleum Ltd. (Calgary) | Burlington Resources Corp. |
| Pogo Producing Company | Plains Exploration and Production Company |
| Pomaikai Oil Corporation | Devon Energy Corporation |
| Pontotoc Production Company Inc. | Same (Subsid: Ascent Energy Inc.) |
| Ports of Call Oil Company | Champion Reserve Corporation |
| Posse Energy Ltd. | Same |
| Posse Petroleum Ltd. | Posse Energy Ltd. |
| Potts Stephenson Exploration Co., Inc. | ONEOK Resources Company |
| PPC Anadarko, In. | Harken Exploration Company |
| PPC Oil & Gas Corp. | Paragon Petroleum Corp. |
| PPPCO Oil Oil Co. Ltd. | Posse Energy Ltd. |
| Prairie Oil Company | Prairie Sinclair Oil Company |
| Prairie Producing Company | Same (Subsid: Placer Development, Ltd.) |
| Prairie Sinclair Oil Company | Sinclair Oil & Refining Corp. |
| Prairie State Energy Company | Same |
| Premcor Refining Corp. | Valero Energy Corporation |
| Premier Operating Company | Imperial Petroleum, Inc. |
| Premier Resources Ltd. | Northern Reef Exploration Ltd. |
| Presco Western LLC | Same (Subsid: Ellora Oil & Gas Inc.) |
| Presidio Exploration, Inc. | (Subsid: Presidio Oil Company) |
| Presidio Oil Company | Tom Brown, Inc. |
| Presidio Operating Company | Captain, Inc. |
| PREVIOUS NAME | CURRENT NAME |
| Primary Fuels, Inc. | Same |
| Prime Natural Resources Inc. | Same (Houston) |
| PrimeEnergy Corporation | Same |
| PrimeEnergy Management Corp. | Same (Subsid: PrimeEnergy Corporation) |
| Prime-X Oil and Gas, LLC | Prime Natural Resources Inc. |
| Princeton Natural Gas Company | Chesapeake Energy Marketing, Inc. |
| Prize Energy Corp. | Magnum Hunter Resources, Inc. |
| Producers Oil, Inc. | Texaco USA, Inc. |
| Producers Royalty Corp. | Texas American Oil Corp. |
| Producing Properties, Inc. | Reserve Oil and Gas Company |
| Profile Capital Corp. | Abacan Resource Corp. |
| Progress | Rycade |
| Progress Energy, Inc. | Same (Raleigh, NC) |
| Progress Fuel Corp. | Same (Subsid: Progress Energy, Inc.) |
| Promax Energy Inc. | American Promax Inc. |
| Prospect Company, The | Subsid: The Travellers Ins. Co. |
| Providence Energy Corp. | Southern Union Company |
| Providence Oil & Gas Corp. | Same |
| Prudential Minerals Exploration | Del Mar |
| PSEC, Inc. | ONEOK Resources Company |
| PSI Energy Inc. (Indiana) | Duke Energy, Inc. |
| PSPC Ltd. | ONEOK Resources Company |
| Pubco Petroleum Corporation | Mesa Petroleum Company |
| Public Service Company of Oklahoma | PSO |
| Public Utility Corporation of Arkansas | ARKLA, Inc. |
| Puma Energy Inc. | Same (Dallas) |
| Pure Energy Resources Inc. | Same (Midland) (Affil: Uncoal Corp.) |
| Pure Oil Company | Union Oil Co. of California |
| Putnam Venture, Ltd. | Exploration Associates, LLC |
| PYR Energy Corp. | Samson Investment Company |
| Pyramid Oil Corporation | Same |
| Pyramid Petroleum, Inc. | Same (Houston) |
| Pyro Energy Corp. | Exex Resources |
| Q | |
| Quaker State Oil Company | Shell Oil Company |
| Quanah Petroleum, Inc. | Marline Petroleum Corporation |
| Quarles Drilling Corporation | Integrated Drilling & Exploration, Inc. |
| Quasar Tech, Inc. | McGowen Resources Co. |
| Quay Valley Inc. | Same |
| Que West Resource, Inc. | Ottawa Energy, Inc. |
| Quebec Affiliates (North America), Ltd. | Razor Oil Company |
| Queen Sand Resources Inc. | DevX Energy Inc. |
| Quesota Oil & Gas | Same |
| Questa Oil & Gas Company | Same (Subsid: Unit Corporation) |
| Questar Corp. | Same |
| Questar Energy Company | Same (Subsid: Questar Corp.) |
| Questar Exploration and Production Company | Same (Subsid: Questar Corp.) |
| Quinoco Energy Inc. | Saxon Oil Development Partners |
| Quinoco Oil Corp. | Saxon Oil Development Partners |
| Quinoco Resources, Inc. | Saxon Oil Development Partners |
| Quintana Petroleum, Inc. | Hallwood Petroleum, Inc. |
| R | |
| Rainbow Resources, Inc. | Williams Companies, The |
| RAM Energy Resources, Inc. | Same (Tulsa) |
| Ram Energy, Inc. | Same |
| Ram Oil & Gas LLC (Dallas) | Tridimension Energy LLC |
| Ram Operating, Inc. | Ram Energy, Inc. |
| Ramco Corporation | Same (Affil: The GHK Company) |
| Ramco Inc. | Ram Energy, Inc. |
| Ramco-NYL-1987 Limited Partnership | Ram Energy, Inc. |
| Ranch Oil Company | Ranch Royalty Company |
| Ranch Royalty Company | Same |
| Range Resources Corp. | Same (Ft. Worth) |
| Rankin Oil Company | Hydrogen Energy Corporation |
| RATEX Resources Incorporated | Same |
| Ratliff Exploration Company | TXO Production Corp. |
| Ray Resources Corporation | Flying Diamond Oil Corp. |
| Razor Oil Company | Same |
| RB Operating, Inc. | Ram Energy, Inc. |
| RDC, Inc. | Same (Subsid: Miramar Resources, Inc.) |
| Reading & Bates Production Co. | Ram Energy, Inc. |
| Rebel Exploration, Inc. | Same |
| Red Eagle Resources Corp. | Lomak Petroleum, Inc. |
| Red River Energy Inc. (Tulsa) | Beta Oil & Gas Inc. |
| Red Rock Ranch | Same (Affil: The GHK Company) |
| Redco Corporation | Arapaho Petroleum, Inc. |
| Redfern Development Corp. | Flag Oil Corp. |
| Redfern Oil Company | Flag Oil Corp. |
| Redfern, Peter F. & Sons, Co. | Flag Oil Corp. |
| Redwind Company | Same (Affil: The GHK Company) |
| Redwind Trust A, B & C | Same (Affil: The GHK Company) |
| Redwood Energy (USA) Ltd. | Same |
| Regal Oil Company | Aminoil USA, Inc. |
| Regency Exploration, Inc. | Oxford Consolidated, Inc. |
| Reichhold Energy | Atlantic Richfield Company |
| Reily Oil | Martin Exploration Mgt. Company |
| Reiter-Foster | Same |
| Remington Oil & Gas Corp. | Cal Dive International Inc. |
| Reno Natural Gas Company | Tenneco Oil Company |
| Reno Oil Company | Tenneco Oil Company |
| Repello Oil Company | Sinclair Oil and Gas Company |
| Republic Natural Gas Company | Mobil Oil Corporation |
| Republic Resources, Inc. | Same (Grand Junction, CO) |
| Reserve Natural Gas Company | ARKLA, Inc. |
| Reserve Oil and Gas Company | Getty Oil Company |
| Reserve Oil, Inc. | Getty Reserve Oil Inc. |
| Reserve Petroleum Company | Getty Reserve Oil Inc. |
| Resource America, Inc. | Same |
| Resource Exploration, Inc. | Resource America, Inc. |
| Resource Partners | Mission Resource Partners, L.P. |
| Resource Services Corp. | Integrated Drilling & Exploration, Inc. |
| Reunion Energy Company | Same (Subsid: Reunion Resources Company) |
| Reunion Resources Company | Same |
| Rialto Energy Inc. | Same (Affil: Torch Energy Corporation) |
| Riata Energy Inc. (Amarillo) | SandRidge Energy, Inc. |
| Richardson-Bass | Bass Producing |
| Richfield Oil Company | Atlantic Richfield Company |
| Richfield Oil Company of California | Richfield Oil Company |
| Richland Resources Corp. | Same (Oklahoma City) |
| Ricks Exploration, Inc. | Same (Subsid: Concho Oil & Gas Corp.) |
| Ridgeway Arizona Oil Corporation | Same (Subsid: Enhanced Oil Resources, Inc.) |
| Ridgeway Petroleum Corporation | Enchanced Oil Resoyrces, Inc. |
| Rigel Energy Corp. | Same |
| Rine Drilling and Exploration, Inc. | Todd, C.H., Inc. |
| Rio Grande Oil Company | Atlantic Richfield Company |
| Rio Nevada Energy, Inc. | Can West Exploration, Inc. |
| RMR, Inc. | Texaco USA, Inc. |
| Roadrunner Energy, Inc. | Brustan Petroleum Corp. |
| Robertson, Corbin J. | Same (Operates: Quintana Pet.) |
| Rock Hill Oil Company | Getty Oil Company |
| Rock Island Oil & Refining Co., Inc. | Koch Industries, Inc. |
| Rocksource ASA | Same (Oslo, Norway / Houston) |
| Rocksource Energy Corporation | Same (Subsid: Rocksource ASA) – Houston |
| Rockwell Drilling Company | RDC, Inc. |
| Roden Oil Company | Houston Natural Gas Corp. |
| Rodman Petroleum Corporation | Same |
| Rodman-Noel | Rodman Petroleum Corporation |
| Roeser and Pendleton | Young, Marshall R. |
| Root Petroleum Corporation | AMOCO Production Company |
| Ro-Pen Royalty | Young, Marshall R. |
| Rosewood Resources, Inc. | Same |
| Ross Production Company | Nerox Energy Corporation |
| Rowan Oil & Drilling Company | Texas Pacific Oil Company |
| Roxana Oil Company | Shell Oil Company, Inc. |
| Roxana Petroleum Company | Shell Oil Company |
| Roxana Resources, Ltd. | Same |
| Royal Producing Company | DEKALB Energy Company |
| Royalties Management Company | Houston Royalty Company |
| RTZ Corp. | Same |
| Rubicon Company, LP | Same (Affil: Torch Energy Corporation) |
| Rubicon Oil and Gas LLC | Same (Midland) |
| Rust Oil Corporation | Same |
| RVO Petroleum Co. | Getty Reserve Oil, Inc. |
| Rycade | Same |
| S | |
| Saba Petroleum Corp. | Greka Energy Corp. |
| Sabacol Inc. | Same (Subsid: Greka Energy Corp.) |
| Sabine Corporation | Pacific Enterprises Royalty Company |
| Sabine Production Company | Sabine Corporation |
| Sabine Royalty Corporation | Sabine Corporation |
| Salamander Energy PLC | Same (London) |
| Salamon Inc. | Same |
| Salt Lake Refining Company | California Company, The |
| Saltmount Oil Company | Midwest Oil Corporation |
| Saltmount-Midwest Oil Company | Amoco Production Company |
| Samedan Oil Corporation | Same (Subsid: Noble Affiliates Inc.) |
| Samson International Company | Same |
| Samson Investment Company | Same (Affil: Samson Resources Corporation) |
| Samson Natural Gas Company | SNG Production Company |
| Samson Natural Resources Corporation | Same (Subsid: Samson International Company) |
| Samson Resources Corporation | Samson International Company |
| Samsung Oil & Gas USA Corp. | Same (Subsid: Samsung of S. Korea) |
| San Diego Gas & Electric, Inc. | Same (Subsid: Sempra Energy, Inc.) |
| San Jacinto | Exxon Company USA |
| Sandefer Oil & Gas, Inc. | Sandefer Oil Company |
| Sandefer Oil Company | Same |
| Sandhawk Energy, LLC | Rocksource Energy Corp. |
| SandRidge Energy, Inc. | Same (Oklahoma City, OK) |
| SandRidge Midstream, Inc. | Same (Subsid: SandRidge Energy, Inc.) |
| SandRidge Tertiary, LLC | Same (Subsid: SandRidge Energy, Inc.) |
| Sanguine, LTD. | Same |
| Santa Fe Andover Oil Company | Santa Fe Minerals, Inc. |
| Santa Fe Braun Inc. | Same |
| Santa Fe Energy Company | Santa Fe Energy Resources, Inc. |
| Santa Fe Energy Partners LP | Santa Fe Energy Resources, Inc. |
| Santa Fe Energy Resources, Inc. | Santa Fe Snyder Corp. |
| Santa Fe Industries | Same |
| Santa Fe International Company | Same |
| Santa Fe International Corporation | Santa Fe International Company |
| Santa Fe Minerals, Inc. | Same |
| Santa Fe Pacific Corp. | Same |
| Santa Fe Snyder Corp. | Devon Energy Corp. |
| Santa Fe Southern Pacific Corp. | Santa Fe Pacific Corp. |
| Santiago | Texas American Oil Corp. |
| Santo Resources, Inc. | Chesapeake Mid-Continent Corp. |
| Santos Americas and Europe Corporation | Same (Subsid: Santos, Ltd.) (Houston) |
| Santos Ltd. | Same |
| Santos USA Corp. | Same (Subsid: Santos, Ltd.) (Houston) |
| SAP Acquisition, LLC | Same (Subsid: Chesapeake Energy Corp.) |
| Sapient Energy Corp. (Tulsa) | Chesapeake Energy Corporation |
| Sara Oil & Gas, Inc. | Same (Oklahoma City) |
| Saratoga Resources, Inc. | PrimeEnergy Corporation |
| Sarkeys | Sabine Production Company |
| Savoy Exploration, Inc. (Michigan) | Same |
| Savoy Oil & Gas, Inc. | Savoy Exploration, Inc. |
| Saxon Oil Company | Hallwood Energy Corporation |
| Saxon Oil Development Partners | Hallwood Energy Partners, L.P. |
| Saxony Corporation | Same (Affil: Meridian Oil Inc.) |
| Scana Corp. | Same |
| Scana Petroleum Resources, Inc. | Same (Subsid: Scana Corp.) |
| Schermerhorn | Anderson-Prichard Oil Company |
| Schlacter, David A. | Same |
| Schraeder Oil Company | Phillips Petroleum Company |
| Schroeder Oil and Gas Corp. | High Plains Oil Corporation |
| Scissor Tail Energy LLC | Copano Energy LLC |
| Scope, Inc. | Same |
| Scurlock Oil Company | Same (Subsid: Ashland Oil Inc.) |
| Scurlock Permian Corp. | Same (Subsid: Ashland Oil Inc.) |
| Seaboard Oil & Gas Company | Texaco-Seaboard, Inc. |
| Seaboard Oil Company | Same |
| Seafeld Resources | Same (Affil: Torch Energy Corporation) |
| Seagull Energy Corporation (Houston) | Ocean Energy, Inc. |
| Seahawk Capital Corporation | Same |
| Seahawk Oil International | Seahawk Capital Corporation |
| Seal Petroleum Corporation | Comex Marine Service |
| Search Drilling | Providence Oil & Gas Corp. |
| Search Exploration and Dev. Co. | Same |
| Seaside Oil Company | Phillips Petroleum Company |
| Secom General Corp. | Same |
| Seitel Inc. | Same (Houston) |
| Seminole Pipeline Company | Enterprise Products Partners, L.P. |
| Sempra Energy International, Inc. | Same (Subsid: Sempra Energy, Inc.) |
| Sempra Energy Resources, Inc | Same (Subsid: Sempra Energy, Inc.) |
| Sempra Energy Solutions, Inc. | Same (Subsid: Sempra Energy, Inc.) |
| Sempra Energy Trading Company | Same (Subsid: Sempra Energy, Inc.) |
| Sempra Energy Utility Ventures, Inc. | Same (Subsid: Sempra Energy, Inc.) |
| Sempra Energy, Inc. (San Diego, CA) | Same |
| Seneca Oil Company | Same (Subsid: Kaiser-Francis Oil Company) |
| Seneca Resources Corp. | Same |
| Seven Seas Petroleum, Inc. | Same |
| SEW Oil Corporation | American Petrofina, Inc. |
| SGO Petroleum Inc. | BRG Petroleum, Inc. |
| Shaffer Oil & Refining Company | Deep Rock Oil Corp. |
| Shamrock Oil & Gas Corp. | Diamond Shamrock Corp. |
| Shamrock Pipeline Corp. | Diamond Shamrock Exploration Co. |
| Shawnee Oil and Gas | Devon Energy Corp. |
| Shell Continental Companies | Same |
| Shell Oil Company, Inc. | Same (Subsid: Royal Dutch/Shell) |
| Shell Petroleum Company, Inc. | Shell Oil Company, Inc. |
| Shell Petroleum Corp. | Shell Oil Company, Inc. |
| Shell Western E & P Inc. | Shell Continental Companies |
| Shell Western Expl. & Prod., Inc. | SWEPI |
| Shenandoah Oil Corporation | Mesa, Inc. |
| Sheridan California Energy Inc. | Same (Affil: Sheridan Energy, Inc.) |
| Sheridan Energy, Inc. | Same (Houston) (Subsid: Calpine Corp.) |
| Shield Oil Company | Amoco Production Company |
| Shore Oil | Same (Affil: Torch Energy Corporation) |
| Shoreline Petroleum Corporation | Producing Properties, Inc. |
| Siebens Oil & Gas | Dome Petroleum Corp. |
| Siebens Oil & Gas Company | Texaco USA, Inc. |
| Signal Company | Signal Oil and Gas Company |
| Signal Oil and Gas Company | Burmah Oil and Gas Company |
| Silver Eagle Resources, Ltd. | Ocean Energy, Inc. |
| Silverridge Corp. | Same |
| Simba Energy Corp. | Same |
| Sinclair Consolidated Oil Corp. | Sinclair Oil Corporation |
| Sinclair Gulf Corp. | Sinclair Consolidated Oil Corp. |
| Sinclair Oil & Refining Corp. | Sinclair Oil Corporation |
| Sinclair Oil and Gas Company | Sinclair Oil Corporation |
| Sinclair Oil Corporation | Atlantic Richfield Company |
| Sinclair Oil Corporation | Same |
| Sinclair, William D., Inc. dba Sinclair Oil Properties | Bearcat Land, Inc. (Oklahoma City) |
| Sipco, Inc. | Chevron USA, Inc. |
| Skaer Enterprises, Inc. | Willard Pease Oil & Gas Co. |
| Skelly Oil Company | Getty Oil Company |
| Skyhawk Energy Affiliates, Inc. | Cutlass Corporation |
| SKZ, Inc. | Zilkha Energy Company |
| SLAPCO (South Louisiana Prod. Co) | Celeron Oil and Gas Company |
| Slick Oil Company, The | Slick-Urschel Oil Company |
| Slick-Moorman Trustees | Same |
| Slick-Urschel Oil Company | Slick-Moorman Trustees |
| Sloan Acquisition Corp. | BayCorp Holdings Ltd. |
| Sloan Group, Ltd. | Same (NH) |
| Smart Exploration, Inc. | Cannon Energy, Inc. |
| Smith & Company | Same |
| Smith Development Corporation | Petrodynamics, Inc. |
| Smith Energy Associates, Ltd. | Same |
| SMR Energy Income Funds | Same |
| SMR Natural Gas Ventures, Inc. (Houston) | Same (Subsid: SMR Energy Income Funds) |
| SMR Property Management, Inc. | SMR Natural Gas Ventures, Inc. |
| SND Energy Company, Inc. | Petrotech Energy Group, Inc. |
| SNG Production Company | Same (Affil: Samson Resources Corporation) |
| Snyder Oil Corporation | Santa Fe Snyder Corp. |
| Snyder Operating Partnership, L.P. | Snyder Oil Corporation |
| Socony | Mobil Oil Corporation |
| Socony Mobil Oil Company, Inc. | Mobil Oil Corporation |
| Socony Vacuum Oil Company | Mobil Oil Corporation |
| Sohio Petroleum Company | Standard Oil Production Company |
| Solarex | Amoco Production Company |
| Sonat Exploration Company | Same (Subsid: Sonat, Inc.) |
| Sonat Minerals, Inc. | Sonat, Inc. |
| Sonat, Inc. | El Paso Energy, Inc. |
| Sonora Acquisitions Corp. | Same (Subsid: American Exploration Company) |
| Sooner Testing Inc. | Cudd Pressure Control |
| Soquip | Same |
| Sotex | Chevron USA, Inc. |
| Sourgasco, Inc. | Conquest Exploration Company |
| South California Petroleum Company | Scope, Inc. |
| South Hampton Mineral Corp. | Same |
| South Louisiana Production Co. (SLAPCO) | Celeron Oil and Gas Company |
| South States Oil & Gas Company | Same (Subsid: American Exploration Company) |
| South Texas Development Company | Sabine Royalty Corporation |
| Southdown, Inc. | Same |
| Southeastern Exploration Company | Enron Oil & Gas Company |
| Southern California Gas Company | Same (Subsid: Sempra Energy, Inc.) |
| Southern Cities Distributing Company | Arkansas Louisiana Gas Company |
| Southern Crude Oil Purchasing Company | Stanolind Oil and Gas Company |
| Southern Energy Resources | Crown Zellerbach Corp. |
| Southern Mineral Corp. | PetroCorp, Inc. |
| Southern Mineral Gas | Sonat, Inc. |
| Southern Minerals | Sun Expl. & Prod. Company |
| Southern Natural Resources Company | Sonat, Inc. |
| Southern Petroleum Company | Sabine Production Company |
| Southern Petroleum Exploration | Wiser Oil Company |
| Southern Producing Company | Sinclair Oil Company |
| Southern Production & Refining Company | Sonat, Inc. |
| Southern Production Company | Atlantic Richfield Company |
| Southern Union Company | Same (Austin) |
| Southern Union Production Company | Supron Energy Corporation |
| Southland Corporation | Same |
| Southland Royalty Company | Meridian Oil, Inc. |
| Southmark Corp. (MGF Assets) | Kaiser-Francis Oil Company |
| Southwest Gas | Sonat, Inc. |
| Southwest Gas Corp. | Same |
| Southwest Gas Producing Company, Inc. | Devon Corporation |
| Southwest Natural Production Company | ARKLA Exploration Company |
| Southwest Royalties Inc. | Same |
| Southwestern Gas Pipeline, Inc. | Same (Subsid: Devon Energy Corp) |
| Southwestern Investments, Ltd. | Same (Affil: The GHK Company) |
| Southwestern Production Corp. | Same |
| Southwestern Refining Company, Inc. | Kerr-McGee |
| Southwood Oil Company | Munance Corp. |
| Sovereign Exploration Company | Bonanza Petroleum, Inc. |
| Sparkman Production Company | Arch Petroleum Corp. |
| Spectra Energy Corp. | Same (Subsid: Duke Energy Corp.) |
| Spectrum 7 Energy Corporation | Harken Oil & Gas, Inc. |
| Spectrum Gas Systems | Div. Of Hutton Oil & Gas |
| Spectrum Oil and Gas Company | MCO Resources Spectrum Corp. |
| Spike Box Land & Cattle Company Inc. | Same |
| Spindletop Oil & Gas, Inc. | Prairie State Energy Company |
| Spinnaker Exploration Company | Same (Houston) (Subsid: Norsk Hydro ASA) (*Dorchester Minerals Oklahoma Et al.) |
| Spire International Corp. | Same |
| Spirit Energy 76 | Same (Subsid: Unocal Corporation) |
| SPR Energy Corporation | Ocean Energy, Inc. |
| Spraberry Development Corp. | Midpar, LP |
| Spring Holdings Inc. | Cross Timbers Oil Company |
| Spring Resources, Inc. | Cross Timbers Oil Company |
| Spurlock & Spines Exploration, Inc. | Hugoton Energy Corporation |
| SRW, Inc. | Secom General Corp. |
| ST. Joe Minerals | Primary Fuels |
| St. Mary Energy Company | Same (Subsid: St. Mary Land & Exploration) |
| St. Mary Land & Exploration Co. | Same (Denver) |
| St. Mary Parish Land Company | St. Mary Land & Exploration Co. |
| Stalwart Energy Company | Lumen Energy, Inc. |
| Standard Life Oil & Gas Ltd. | Same (Affil: Torch Energy Corporation) |
| Standard of Indiana | Amoco Production Company |
| Standard of Texas | Chevron USA, Inc. |
| Standard Oil Company of California | Chevron USA, Inc. |
| Standard Oil Company of Indiana | Amoco Production Company |
| Standard Oil Company of Kentucky | Chevron USA, Inc. |
| Standard Oil Company of New Jersey | Exxon Corporation |
| Standard Oil Company of New York | Mobil Oil Corporation |
| Standard Oil Company of Ohio | Sohio Petroleum Company |
| Standard Oil Company of Texas | Chevron USA, Inc. |
| Standard Oil Company, Inc. | Amoco Production Company |
| Standard Oil Production Company | BP Exploration Inc. |
| Stanolind Oil & Gas Company | Pan American Petroleum Corp. |
| Star Oil & Gas Acquisitions, Ltd. | Star Oil & Gas Ltd. |
| State Petroleum Corp. | Talisman Energy, Inc. |
| Statoil, Inc. | Same |
| Stelor Resources Ltd. | Murwell Resources Ltd. |
| Stephen Petroleum | F.E. Harper & Cornell |
| Sterling Drill & Prod. Co., Inc | PrimeEnergy Management Corp. |
| Sterling Energy Ltd. | Same (Subsid: Sterling Energy, plc U. K.) |
| Sterling Oil & Gas | Tenneco Oil Company |
| STEX Energy Company | Same |
| Stocker Resources, Inc. | Same (Subsid: Plains Resources, Inc.) |
| Stone Energy Corp. | Same (Lafayette, Denver) |
| Stonehenge Petroleum Corp. | Inland Fuels Corporation |
| Storm Cat Energy Corp. | Same |
| Stroud Energy, Inc. | Range Resources Corporation |
| Sugar Creek Oil & Gas, Inc. | Ventura Energy, Inc. |
| Summit Petroleum Corporation | Midland Resources, Inc. |
| Summit Resources, Ltd. | Paramount Resources, Ltd. |
| Sun | Sun Company, Inc. |
| Sun Calvert Company | Sun Oil Company |
| Sun Company, Inc. | Sunoco, Inc. |
| Sun Company, Inc. (E&P Assets) | Sun Expl. & Prod. Company |
| Sun Energy Partners, LP | Kerr-McGee Corporation |
| Sun Expl. & Prod. Company | Oryx Energy Company |
| Sun Oil Company | Sun Company, Inc. |
| Sun Oil Company of Ohio | Sun Company, Inc. |
| Sun Oil Line Company | Sun Oil Company of Ohio |
| Sun Production | Sun Company, Inc. |
| Sunac Petroleum Corp. | Sunset International Pet. Corp. |
| Sunbelt Energy Inc. | Interamerican Corp. |
| Sunco Trucking Company | Key Energy Group, Inc. |
| Sundance Canada | Soquip |
| Sunoco Energy Inc. | Same |
| Sunoco, Inc. | Same |
| Sunoma Energy, Inc. | Same |
| Sunoma, Inc. | Chesapeake Energy Corp. |
| Sunray DX Oil Company | Sun Company, Inc. |
| Sunray Mid-Continent Oil Company | Sunray DX Oil Company |
| Sunray Oil Corporation | Sunray DX Oil Company |
| Sunset International Petroleum Corp. | Sipco, Inc. |
| Sunshine Mining | Same |
| Sunwing Energy, Inc. | Ivanhoe Energy, Inc. |
| Superior Energy Services, Inc. | Same |
| Superior Oil Company | Mobil Oil Corporation |
| Supnev, Inc. | Superior Oil Company |
| Supron Energy Corporation | Union Texas Petroleum Corp. |
| Surprise Oil Corporation | Berry Petroleum Corporation |
| Sweet Corporation | Oklahoma Acquisition Corp. |
| SWEPI | Same |
| Synthesis Energy Holding Inc. | Same (Suibsid: Synthesis Energy Systems Inc. |
| T | |
| T & L Oil Company | Texaco USA, Inc. |
| Taeping Company | Jerry Chambers Exploration Co. |
| Talisman Energy, Inc. | Same |
| Tall Grass Services, LLC | Same (Sbusid: Devon Energy Corp.) |
| Tamborine Holdings Inc. | Synthesis Energy Holdings Inc. |
| Tamm Oil & Gas Corp. | Same (Reno, NV / Calgary) |
| Tana Production Corporation | Texaco USA, Inc. |
| Tandem Energy Holding, Inc. | Same (Subsid: Platinum Energy Resources, Inc.) |
| Tannehill Oil Company | Berry Petroleum Corp. |
| Tarasol Ventures Inc. | Founders Energy Ltd. |
| Tarragon Oil & Gas, Ltd. | Same |
| Tatonka Oil and Gas Inc. | Same (Denver) |
| Taurus Exploration U.S.A., Inc. | Energen Resources Corporation |
| Taurus Exploration, Inc. | Taurus Exploration U.S.A., Inc. |
| Taylor Energy Company, LLC | Same (New Orleans) |
| Taylor Refining | Tenneco Oil Company |
| Taylor, John A. | Plains Resources, Inc. |
| TBI Acquisitions Inc. | Brown, Tom Inc. |
| TBI Exploration, Inc. | Brown, Tom Inc. |
| TCPL Resources U.S.A. Ltd. | Wessely Energy Company |
| TCW Group, Inc. | Same (Los Angeles) |
| TCW Investment Management Group, Inc. | Same (Subsid: TCW Group, Inc.) |
| TDC Energy Corp. | Same (New Orleans) |
| Tea Australia Inc. | Same (Affil: Torch Energy Corporation) |
| Teal Exploration, Ltd. | Same |
| Teal Gathering Company | ARKLA Exploration Company |
| Teal Pipeline Company | Same (Subsid: ARKLA Exploration Company) |
| Tejas Gas Corp. | Kinder Morgan Energy Partners, LP |
| Tejas Gas, LLC | Kinder Morgan Energy Partners, LP |
| Tejas Natural Gas Liquids, LLC | Same (Subsid: Shell Oil Company) |
| Tejas Oklahoma Marketing Company | Tejas Oklahoma Marketing, LLC |
| Tejas Oklahoma Marketing, LLC | Same (Subsid: Tejas Gas Corp.) |
| Tejas Power Corp. | TPC Corp. |
| Tekoil Corp. | Consolidated Oil & Gas, Inc. |
| Tema Oil Company | Mesa, Inc. |
| Temex Energy, Inc. | TGX Corporation |
| Temple Exploration, Inc. | Husky Energy, Inc. |
| Tenkay Resources, Inc. | Same |
| Tenneco Oil Company | Liquidated (See Notes in back) |
| Tennessee Gas Transmission Company | Tenneco Oil Company |
| Tensas Delta Company | Wheless Drilling Company |
| Terra Resources, Inc. | Pacific Enterprises Oil Company |
| Terry Energy, Inc. | Terry Petroleum Company |
| Terry Operating Company | Terry Petroleum Company |
| Terry Petroleum Company | Same |
| Terry Resources Corp. | Terry Petroleum Company |
| TES Acquisitions Corp. | Same (Subsid: American Exploration Company) |
| Tesoro E & P Company, L.P. | EEX Onshore, Inc. |
| Tesoro Petroleum Corporation (Partial) | Shell Oil Company |
| Tesoro Petroleum Corporation (San Antonio) | EEX Corp. |
| Tetco | Same |
| TEX/CON Oil & Gas Company | PG&E Resources Company |
| TEX/CON Oil & Gas Company | Standard Oil Production Company |
| Texaco Exploration and Production Inc. | Same (Subsid: Texaco USA, Inc.) |
| Texaco Oils, Inc. | Texaco USA, Inc. |
| Texaco Producing Inc. | Texaco Exploration and Production Inc. |
| Texaco TPC Inc. | Texaco USA, Inc. |
| Texaco USA, Inc. | Chevron Texaco Corp. |
| Texaco, Inc. | Texaco USA, Inc. |
| Texaco-Seaboard, Inc. | Texaco USA, Inc. |
| Texas American Oil Corporation | Devon Energy Corp. |
| Texas British Oil & Gas Corp. | Anvil Petroleum Corp. |
| Texas Company, The | Texaco USA, Inc. |
| Texas Eastern Transmission Company | Tetco |
| Texas Fuel Company | Texaco USA, Inc. |
| Texas Gas | Same |
| Texas Gas Company | Texaco USA, Inc. |
| Texas Gas Exploration Company | CSX Oil & Gas Corporation |
| Texas Gas Producing Company | Reserve Oil, Inc. |
| Texas Gasmark, Inc. | Delhi Gasmark, Inc. |
| Texas Gulf Oil Company | Texas Gulf Production Company |
| Texas Gulf Production Company | Sinclair Oil Corporation |
| Texas International Company | Phoenix Resources Companies, Inc. |
| Texas Int’l Petroleum Company | TIPCO, Inc. |
| Texas Land and Mortgage Company | Andover Oil Company |
| Texas Meridian Resources, Ltd. | Same |
| Texas National Petroleum | Union Oil Company |
| Texas Northeast Oil & Gas Company | Moore McCormack Company |
| Texas Oil & Gas Corporation | TXO Production Corp. |
| Texas Oils Inc. | Texaco Producing Inc. |
| Texas Pacific Oil Company | Sun Expl. & Prod. Company |
| Texas Utilities Companies | Same |
| Texasgulf | Elf Aquitaine |
| TexCal Energy, LLC | Venoco, Inc. |
| Texco Energy Corporation | Egret Energy Corporation |
| Texneft Inc. | Ocean Energy, Inc. |
| Texoil, Inc. | Same (Houston) |
| Texoma | Apache Corporation |
| Texoma Trust, Ltd. | Cornell Oil Company |
| Texota | Same |
| Tex-Star Oil & Gas Corp. | Texas Oil & Gas Corporation |
| Texstar Petroleum Inc. | Same (Subsid: Benz Energy Inc.) |
| Textron Investment Management Co. | Paul Revere Investment Management Corp. |
| TGX Corporation | Sheridan Energy, Inc. |
| The Oil & Gas Company | W.P. Nelson & Company |
| The Texas Company | Texaco USA, Inc. |
| Theomis Energy Company | Phoenix Energy Company |
| Thermal Exploration, Inc. | Washington Energy Resources Company |
| Thomas Drilling Company | Mack Energy Company |
| Thomas, Nelson R. | Same |
| Thousand Oaks Development Corporation | Ocean Energy, Inc. |
| Three States | Delhi-Taylor Oil Company |
| Threefarms | Same (Affil: The GHK Company) |
| Thunder Creek Gas Services LLC (Wyoming) | Same (JV: K-N Energy, Inc/Devon Energy Corp.) |
| Tidal Oil Company | Tidewater Oil Company |
| Tide Water Associated Oil Co. | Tidewater Oil Company |
| Tide West Oil Company | HS Resources, Inc. |
| Tidewater Associated Oil Company | Getty Oil Company |
| Tidewater Oil Company | Getty Oil Company |
| Tidewater Oil Company | Tide Water Associated Oil Co. |
| Tierra Petroleum Corp. | Georgetown Exploration Inc. |
| Tikal Resources Corp. | Same (New York City) |
| Tikal Resources Inc. | Tikal Resources Corp. |
| TIPCO, Inc. | Texas International Company |
| Tipperary Oil & Gas Corp. | Same |
| Tipperary Petroleum Company | Tipperary Oil & Gas Corp. |
| Titan Exploration Inc. | Pure Energy Resources Inc. |
| TNC Media Inc. | Gothic Energy Corporation |
| TOC Acquisitions Corp | Same (Subsid: American Exploration Company) |
| TOC Rocky Mountains | Amoco Production Company |
| Todd, C.H. Inc. | Same |
| Toga Petroleum Company | Same |
| TOGO Offshore Inc. | Same (Affil: Torch Energy Corporation) |
| Toklan Oil and Gas Corporation | Cobb Oil and Gas Company |
| Toklan Oil Company | Kirby Petroleum Corp. |
| Tonkowa Gas Processing Company | Koch Midstream Processing Company (Subsid: Koch Industries, Inc.) |
| Torch Canada | Same (Affil: Torch Energy Corporation) |
| Torch Energy Advisors Inc. | Same (Affil: Torch Energy Corporation) |
| Torch Energy Associates | Same (Affil: Torch Energy Corporation) |
| Torch Energy Corporation | Same |
| Torch Energy Marketing, Inc. | Same (Affil: Torch Energy Corporation) |
| Torch Energy Royalty Trust | Same (Affil: Torch Energy Corporation) |
| Torch Illini Ventures Inc. | Same (Affil: Torch Energy Corporation) |
| Torch Limited Partnership | Same (Affil: Torch Energy Corporation) |
| Torch Oil and Gas Company | Same (Affil: Torch Energy Corporation) |
| Torch Operating Company | Same (Affil: Torch Energy Corporation) |
| Torchmark Corporation | Same (Affil: Torch Energy Corporation) |
| Toreador Resources Corporation | Same (Dallas) |
| Tornado Resources Ltd. | Same |
| Tosco Corp. | Phillips Petroleum Company |
| Total Minatome Corporation | Energen Resources Corporation |
| Total Petroleum (Canada) | Rigel Energy Corp. |
| Total Petroleum (North America), Ltd. | Liquidated (See Notes in back) Producing Assets |
| Total Petroleum (North America), Ltd. | Ultramar Diamond Shamrock Corp. Refining and Marketing Assets |
| Total Petroleum, Inc. | Same |
| Total Resources Ltd. | Same |
| Total, SA (Based in France with U.S. Assets) | Same |
| Towner Petroleum Corp. | Zilkha Energy Company |
| TPC Corp. | Same (Subsid: Harken Energy Corp.) |
| TPC&C & Frankfort | Texas Pacific Oil Company |
| TPEX Exploration, Inc. | Kestrel Energy, Inc. |
| Trafalgar House Oil and Gas Inc. | Hardy Oil & Gas USA Inc. |
| Transamerica Development Co. | Same |
| Transco Energy Company | Same |
| Transcontinental Energy & Drilling | TXP Operating |
| Transcontinental Gas Pipe Line Company | Transco |
| TransGlobe Oil & Gas Corp. | Same |
| Transierra Exploration Corp. | Belco Petroleum Corporation |
| Transitory Corp. | GHK Company, The |
| TransOcean Oil Company | Mobil Oil Corporation |
| Transocean, Inc. | Same (Houston) |
| Transok Gas Company | Transok Gas, LLC Same (Subsid: Enogex Inc.) |
| Transok Gas Processing Company | Transok Gas Processing, LLC |
| Transok Gas Processing, LLC | Same (Subsid: Enogex Inc.) |
| Transok Gas, LLC | Same (Subsid: Enogex Inc.) |
| Transok, Inc. | Transok, LLC |
| Transok, LLC | Same (Subsid Enogex Inc.) |
| Trans-Texas Investments Inc. | United Trans-Western, Inc. |
| Trans-Western Exploration, Inc. | United Trans-Western, Inc. |
| Travellers, The (Ins. Co) | The Prospect Company (O&G int.) |
| Trend Exploration Company | Trend Exploration I, LLC |
| Trend Exploration I, LLC | Same |
| Trendwell Energy Corporation | Same |
| Trendwell Oil Corporation | Trendwell Energy Corporation |
| Trexco Resources, Inc. | Balcron Oil Company |
| Triana Energy Holdings LLC | Same |
| Tribune Oil | Sabine Production Company |
| Trice Production Company | Diamond Shamrock Exploration Co |
| Trice Properties | Diamond Shamrock Exploration Co |
| Trident Acquisition Corp. | Warren Intrastate Gas Supply, Inc. |
| Trident Gas Marketing, Inc. | Warren Gas Marketing, Inc. |
| Trident NGL Pipeline Company | Warren NGL Pipeline Company |
| Trident NGL, Inc. | Warren NGL, Inc. |
| TriDimension Energy LLC | Same (Dallas) |
| Trinidad Oil | Texaco USA, Inc. |
| Trinity Energy Resources, Inc. | Same (Houston) |
| Trinity Gas Corp. | Trinity Energy Resources, Inc. |
| Trinity Oil & Gas | Questa Oil & Gas, Inc. |
| Tri-Quest Energy Corp. | Same (Subsid: Corker Resources Inc.) |
| Tri-Quest Energy Ltd. | Tri-Quest Energy Corp. |
| TriSearch Inc. | National Energy Group, Inc. |
| Tri-Service Drilling Company | Midland Southwest Corporation |
| Triton Oil & Gas Corp. | Same |
| Triton Oil & Gas Corp. of Delaware | Worldwide Energy Corporation |
| Triton Producing Company | Same |
| Tri-Valley Corporation | Same |
| Tronz-Om US and Canada, Ltd. | Blessure Hydrocarbons Corp. |
| Trousil and Associates Inc. | Same |
| Trustee Holding Corporation | Same (Affil: The GHK Company) |
| TS, Inc. | Home Petroleum Corporation |
| Tsrebol Oil Company | Rodman-Noel |
| Tucker Drilling Company | Patterson Energy, Inc. |
| Turbo Resources, Ltd. | Canadian Turbo, Inc. |
| Turnan Oil Company | Mid-States Oil Corporation |
| Tutamian Production Corporation | Same |
| Tuthill & Barbee | Hugoton Energy Corp. |
| Twelve Oil and Gas Corp. | Twelve Resources, Inc. |
| Twelve Operations Company | Twelve Oil and Gas Corp. |
| Twelve Operations Company | Twelve Oil of Arkansas, Inc. |
| Twelve Resources, Inc. | Same |
| Twelve Saddles Land and Cattle Company | Twelve Operations Company |
| Twin Eagle Petroleum Corp. | Petromark Resources Company |
| Twin Oil Company | Atlantic Richfield Company |
| Twin Richfield Oils Ltd. | Glencoe Resources Ltd. |
| TXCO Resources Inc. | Same (San Antonio) |
| TXL Oil Corp. | Texaco USA, Inc. |
| TXO Gas Marketing, Inc. | Delhi Gas Marketing, Inc. |
| TXO Gas Ventures, Inc. | Delhi Gas Ventures, Inc. |
| TXO Production Corp. | Marathon Oil Company |
| TXOK Acquisition Inc. | Same (Subsid: Exco Resources Inc.) |
| TXP Operating | Same |
| U | |
| U.S. Energy Corp. | Same |
| U.S. Minerals Exploration | Same |
| U.S. Oil | Mecom Oil |
| U.S. Smelting Production Co. | U.V. Industries |
| U.S. Steel Corp. | Marathon Petroleum Company |
| U.V. Industries | Tenneco Oil Company |
| Ultramar Corporation | Ultramar Diamond Shamrock Corp. |
| Ultramar Diamond Shamrock Corp. | Valero Energy Corporation |
| Ultramar, Inc. | Ultramar Diamond Shamrock Corp. |
| UMC Petroleum Corporation | Ocean Energy Resources, Inc. |
| UMC Petroleum Resources Corporation | UMC Petroleum Corporation |
| Unetech International Corp. | Same (Subsid: CanArgo Energy Corp) |
| Unibar Energy Services Inc. | Same |
| Unical | Union Oil Co. of California |
| Unicon Producing Company | Meridian Oil Production Company |
| Unified Oil Company | Allied Chemical Corporation |
| Unioil | Same (Subsid: Petroleum Development Corp) |
| Uniol Energy Corporation | Gallent Oil Company |
| Union Cal Inc. | Union Oil Co. of California |
| Union Light, Heat and Power Inc. (KY) | Duke Energy Corp. |
| Union O & G of Louisiana | Union Texas Petroleum Corp. |
| Union of Louisiana | Union Texas Petroleum Corp. |
| Union of Texas | Union Texas Petroleum Corp. |
| Union of Texas Petroleum | Union Texas Petroleum Corp. |
| Union Oil Co. of California | Chevron Texaco Corp.B2903 |
| Union Oil Co. of California | Unocal Corporation |
| Union Oil Explorations Ltd. | Same (Affil: Torch Energy Corporation) |
| Union Oil of California | Union Oil Co. of California |
| Union Pacific Resources Company | Same (Subsid: Union Pacific Resources Group Inc.) |
| Union Pacific Resources Group Inc. | Same (Subsid: Anadarko Petroleum Corp.) |
| Union Petroleum of Texas | Union Texas Petroleum Corp. |
| Union Producing Company | Penzoil Company |
| Union S & O | Union Texas Petroleum Corp. |
| Union Texas International Corp. | Same |
| Union Texas Natural Gas Corp. | Union Texas Petroleum Corp. |
| Union Texas Petroleum Corp. | Union Texas International Corp. |
| Union Texas Petroleum Corp.(US Onshore) | Meridian Oil Inc. |
| Unit Corporation | Same |
| Unita Gas & Oil, Inc. | Coconino SMA, Inc. |
| United American Life Ins. (O&G) Assets | Same (Affil: Torch Energy Corporation) |
| United Carbon Company | United Carbon Producing Co., Inc. |
| United Carbon Producing Co., Inc. | Ashland Oil & Refining Company |
| United Energy Resources, Inc. | Midcon |
| United Gas, Inc. | Pennzoil Company |
| United Investors Management Co. | Same (Affil: Torch Energy Corporation) |
| United Meridian Corp. | Ocean Energy, Inc. |
| United Petroleum Corporation (Knoxville, TN) | Same |
| United Producing Company | Same |
| United States Borax & Chemical Corp. | Same |
| United States Exploration, Inc. | Noble Energy Inc. |
| United Trans-Western, Inc. | Same |
| Universal Consolidated | Chevron USA, Inc. |
| Universal Resources Corporation | Questar Exploration and Production Company |
| UNOCAL Corporation | Chevron Corporation |
| UNOCAL Corporation (San Juan and Permian Assets) | Pure Energy Resources, Inc. (New entity 2001) |
| USM Oil Company | Olix Industries, Inc. |
| Utah International, Inc. | Ladd Petroleum Corp. |
| Utah Oil Company | Amoco Production Company |
| Utah Oil Refining Company | Amoco Production Company |
| V | |
| VAL Energy, Inc. | Same |
| Valero Energy Corporation | Same (San Antonio) |
| Vantage Point Energy, Inc. | ConVest Energy Corp. |
| Vantas Energy Corp. | Same (Subsid: PG&E) |
| Varco International, Inc. | National-Oilwell Varco, Inc. |
| Varn Oil Company | Same |
| Vastar Resources, Inc. | BP Amoco Inc. |
| Vaughn Management, Inc. | Same |
| Vaughn Petroleum, Inc. | Vaughn Management, Inc. |
| Velasco Gas Company, LP | Same (Affil: Torch Energy Corporation) |
| Velvet Exploration, Ltd. (Calgary) | El Paso Oil & Gas Canada Acquisition Corp. |
| Venoco, Inc. | Same (Denver) |
| Ventura Energy, Inc. | Same |
| Venucot Resources, Inc. | Diverse Energy Investment, Inc. |
| Venus Exploration Inc. | PYR Energy Corp. |
| Venus Oil Company | Same |
| Vesta Energy Company | Edisto Resources Corp. |
| Vickers Petroleum Company, Inc. | Vickers Refining Company, Inc. |
| Vickers Refining Company, Inc. | Total Petroleum, Inc. |
| Victory Oil & Gas Company | P.P. M. Investments (USA), Inc. |
| Viersen & Cochran | Same |
| Viersen & Sant | Same (Affil: Viersen & Cochran) |
| Viersen Land & Royalty Co. | Same (Affil: Viersen & Cochran) |
| Viersen Oil & Gas Co. | Same (Affil: Viersen & Cochran) |
| Viking Oil Ltd. | Sun Company, Inc. |
| Viking Petroleum Reserves, Inc. | Same |
| Viking Petroleum, Inc. | Viking Petroleum Reserves, Inc. |
| Villines-Gibson Oil and Gas | Courtaulds North America Inc. |
| Vintage Petroleum Inc. | Same (Subsid: Occidental Petroleum Corp.) |
| Vision Energy Inc. | Same (Affil: Seitel Inc.) |
| Vista Energy Resources Inc. (Midland) | Prize Energy Corp. |
| Volunteer Energy, LLC (Tulsa) | First Energy Corp. |
| Volvo Petroleum | Same |
| Voyager Energy Inc. | Poco Petroleum Ltd. |
| Voyager Petroleum | Nu-West Development |
| VP Oil Inc. | National Energy Group Inc. |
| Vulcan Minerals & Energy Inc. | Same (Subsid: Regent Group – Houston) |
| Vysis, Inc. | Amoco Production Company |
| W | |
| W & T Offshore, Inc. | Same (Houston) (Affil: Kerr-McGee Corp.) |
| Wacker Oil Inc. | Seagull Energy Corp. |
| Wagner Oil Company | Same (Ft. Worth) |
| Wahlenwier Oil Company | Tenneco Oil Company |
| Wainoco Oil Corp. | Same |
| Walker Energy Partners, MLP | Texas Meridian Resources, Ltd. |
| Waller County Minerals Company | Ocean Energy, Inc. |
| Ward Petroleum Corp. | Same (Enid, OK) |
| Warren American Oil Company (Tulsa) | Same (Subsid: NGC Corporation) |
| Warren Arkansas Gathering, Inc. (Houston) | Same (Subsid: NGC Corporation) |
| Warren Energy Resources, Ltd. Pts (Houston) | Same (Subsid: NGC Corporation) |
| Warren Energy, Inc. (Houston) | Same (Subsid: NGC Corporation) |
| Warren Gas Liquids, Inc. (Houston) | Same (Subsid: NGC Corporation) |
| Warren Gas Marketing, Inc. (Houston) | Same (Subsid: NGC Corporation) |
| Warren Intrastate Gas Supply, Inc. | Same (Subsid: NGC Corporation) |
| Warren NGL, Inc. (Houston) | Same |
| Warren NGL, Pipeline Co. (Houston) | Same |
| Warren Petroleum Company | Sipco, Inc. |
| Warren-Bradshaw | Chevron USA, Inc. |
| Warrior Energy Services Corporation | Superior Energy Services, Inc. |
| Washington Energy Resources Company | Cabot Oil & Gas Corporation |
| Washita Oil & Gas, LLC | Same |
| Washita Production Company | ONEOK Resources Company |
| Waterford Energy, Inc. | Kaiser-Francis Oil Company |
| Watson Geophysics, Inc. | MCOR Oil Development, Inc. |
| Watson Oil Corporation | MCOR Oil Development, Inc. |
| Watson Oil Petroleums Exploration, Inc. | MCOR Oil Development, Inc. |
| Watson Petroleums Exploration, Inc. | Ocean Energy, Inc. |
| WCX Corporation | Mesa, Inc. |
| Webb Resources | Standard Oil Production Company |
| WEC Acquisition Corp. | Whittier Energy Corp. |
| Weco Development Corporation | Worldwide Energy Corporation |
| Welchem, Inc. | Amoco Production Company |
| Wellington Oil Company | Texaco USA, Inc. |
| Wessely Energy Co. | NGC Energy Co. |
| West America Corp. | Same |
| Westates Petroleum | Hamilton Dome |
| Westates Petroleum | Santa Fe Industries |
| Westbrook Energy Corp. | Manhattan Resources Corp. |
| Westcoast Energy, Inc. | New World Development Co., Ltd. |
| Westcoast Petroleum Ltd. | Numac Oil & Gas Ltd. |
| Western Crude Oil, Inc. | Reserve Oil and Gas Company |
| Western Decalta | Loram International |
| Western Dev. Co. of Del. | International Oil & Gas Corp. |
| Western Energy Development Company | Oxford Consolidated, Inc. |
| Western Energy Resources Inc. | OMNI Power Inc. |
| Western Gas Processors, Ltd. | Same |
| Western Gulf Oil Company | Chevron USA, Inc. |
| Western Natural | El Paso Products Company |
| Western Natural Gas | Atlantic Richfield Company |
| Western Oil Fields, Inc. | Same |
| Western Oil Sands, Inc. | Marathon Oil Corporation |
| Western Petroleum Assoc. | Same |
| Western Production Company | Black Hills Exploration and Production, Inc. |
| Westport Oil & Gas Inc. | Belco Oil & Gas Corp. |
| Westport Resources Corp. (Denver) | Kerr-McGee Corp. |
| WGP, Inc. | Same (Subsid: Western Gas Processors, Ltd.) |
| Whaley Company | Kewanee Oil Company |
| Wheless Drilling Company | Same |
| White Eagle International Oil Company | White Eagle International, Inc. |
| White Eagle International, Inc. | Helmerich & Payne, Inc. |
| White Shield Oil Company | Helmerich & Payne, Inc. |
| Whiting Petroleum Corp. | Same (Subsid: IES Industries, Inc. – Denver) |
| Whittier Energy Company | Whittier Energy Corp. |
| Whittier Energy Corp. (Houston) | Sterling Energy, Inc. (Houston) |
| Wilco Properties, Inc. | Same |
| Wilcox Corporation | Tennco Oil Company |
| Wilcox Oil Company | Tennco Oil Company |
| Wilcox Oil Corporation | Tennco Oil Company |
| Willard Pease Oil & Gas Co. | Pease Oil and Gas Company |
| Williams Companies, The | Same |
| Williams Energy Partners L.P. | Same (Affil: Williams Companies, Inc.) |
| Williams, L.G., Oil Co., Inc. | Matrix Energy, Inc. |
| Williamson, J.C. | Tenneco Oil Company |
| Willimax | Shell Oil Company |
| Wilshire | B-L Associates |
| Wilshire Oil of California | Chevron USA, Inc. |
| Windfohr Oil Company | Burnett Oil Company |
| Windor Energy Group, LLC | Same (Affil: Gulfport Energy Inc. |
| Windsor Petroleum | Southwestern Production Corp. |
| Wintershall Energy Inc. | Same |
| Wintershall Oil & Gas Company | American Petrofina, Inc. |
| Wiser Oil Company (Dallas) | Forest Oil Corporation |
| WO Exploration Inc. | Ocean Energy, Inc. |
| WO Offshore Inc. | Ocean Energy, Inc. |
| WOC Acquisition Company | Same |
| Wolfson Oil Company | Sipco, Inc. |
| Wolverine Exploration Company | Amerac Energy Corporation |
| Womad Oil Company | Quebec Affiliates (North America), Ltd. |
| Wood River Oil & Refinery | Rock Island Oil & Refining Company, Inc. |
| Woodbine Petroleum, Inc. | Same (Subsid: Nycal Corp.) |
| Woodley Petroleum | Pure Oil Company |
| Woods Petroleum Corp. | Sonat Exploration Co. |
| Woodside Petroleum, Ltd. | Same (Australian Co. with US Assets) |
| Woodson Oil Company | Texas Pacific Oil Company |
| World Fuel Services Corp. | Same |
| Worldwide Energy Corporation | Triton Oil & Gas Corp. |
| Wrather, J.D., Jr. | Same |
| Wrightsman, C.J. | Moncrief, W.A. |
| WRT Energy, Inc. | Same (Affil: DLB Oil & Gas, Inc.) |
| WW Oil & Gas Inc. | Paco Integrated Energy, Inc. |
| Wynn-Crosby 1994, Ltd. | Wynn-Crosby Energy, Inc. |
| Wynn-Crosby Energy, Inc. | Petrohawk Operating Company |
| Wyoming Montana & Indiana Petroleum | Western Petroleum |
| XCL | See Exploration Company of Louisiana |
| XCL, Ltd. | Same |
| XOM | Same (Subsid: ExxonMobil Corp.) |
| Xplor Corp. | Venus Exploration Inc. |
| Xplor Energy Inc. (Houston) | Harken Energy Corporation |
| XTO Energy Inc. | ExxonMobil Corp. |
| XYZ | |
| Yankee Production Corporation | Alfonso Production Company |
| Yankee Resources, Inc. | Access Energy Corp. |
| Yates Petroleum Corp. | Same (Artesia, NM) |
| YNB Oil and Gas Inc. | Caravelle Petroleum, Inc. |
| York & Harper | Tenneco Oil Company |
| Young, Marshall R. | Young, Marshall R. Drilling Company |
| Yount-Lee Oil Company | Amoco Production Company |
| Yukon Trading Company, LLC | Same (Affil: JMA Energy Company, LLC) |
| Zapata & Statco | Pennzoil Company |
| Zapata Corp. | Norex Drilling, Inc. |
| ZBX, Inc. | Matlin Petroleum Corporation |
| ZCA Gas Gathering, Inc. | United States Exploration, Inc. |
| Zenergy Inc. | Same (Tulsa) |
| Zenergy Operating Company LLC | Same (Subsid: Zenergy Inc.) |
| ZG Energy Corporation | Vantage Point Energy, Inc. |
| Zilkha Energy Company | Sonat, Inc. |
| Zoller & Danneberg, Inc. | Premier Resources, Ltd. |
| Zuma New-Mexico Oil Corporation | Jackalope-New-Mexico Oil Co. |