Mergers & Acquisitions

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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.