FROM/CURRENT TO (CURRENT) 1400 Corporation ... - NADOA

FROM/CURRENT TO (CURRENT) 

1400 Corporation AMERICAN EXPLORATION COMPANY 

3 TEC Energy Corp PLAINS E & P CO. 

3300 Corporation AMERICAN EXPLORATION COMPANY 

3 TECH Energy Corp PXP GULF COAST, INC. 

44 Canyon, LLC CHEVRON MIDCONTINENT, LP 

4700 Corp AMERICAN EXPLORATION COMPANY 

500 Corporation 1987 AMERICAN EXPLORATION COMPANY 

820 Management Trust 820 MT O&G TX (WY)(LA)(MULTI-STATE) L.P. 

A & J Oil Co. NELSON R THOMAS 

A & K Petroleum 1957 KERR-MCGEE CORP 

A & K Petroleum 1957 DEVON ENERGY 

A.E. Acquistion Corp. see Dominion Exploration & Production Inc 

AA Development Corp. 1984 AA ENERGY CORP (AMR ENERGY CORP) 

Abaca Oil Co. 1963* see Dominion Exploration & Production Inc 

Abbeville Operating Corp. D.C. BINTLIFF 

ABCO Energy Corp. 1983 TEJAS OIL & GAS CO 

ABEL & BANCROFT 

Aberdeen Petroleum 1975 DEVON ENERGY 

Aberdeen Petroleum Corp. 1976 DEVON ENERGY 

Abney Oil Co. 1980 P. & O. FALCO, INC 

ABTEC Chemical Company 1980 TOTAL E&P USA INC 

Acadia Petroleum Corp. 

ACCESS ENERGY CORP 

FOUNTAIN OIL & GAS, INC. 

Acrol Oil Co. 1966 JAMES DONOGHUE 

Ada Oil Corporation 1983* TOTAL E&P USA INC 

ADA Resources 1979 

ADAMS RESOURCES & ENERGY, INC. 

ADAMS RESOURCES & ENERGY, INC. 

Adams Resources Exploration Corp. ADAMS RESOURCES & ENERGY, INC. 

Addington Brothers Mining Co. 1976 ASHLAND OIL INC. 

Adena Exploration Inc. WASHITA PRODUCTION CO. 

Adobe Gas Cos. APACHE CORP 

Adobe Gas Pipeline APACHE CORP 

Adobe Oil & Gas Corp. 1985 DEVON ENERGY 

Adobe Oil Co. 1977 DEVON ENERGY 

Adobe Resources Corp. DEVON ENERGY 

Adobe Royalty, Inc. 

ADVANTAGE OIL & GAS, LTD. 

DEVON ENERGY 

AEC (Alberta Energy Co., Ltd) ENCANA CORP. 

AEC Gas Company see Dominion Exploration & Production Inc 

AEC Gathering Services (USA), Inc. ENCANA GATHERING SERVICES (USA) INC. 

AEC Gulf of Mexico, Inc. ENCANA GULF OF MEXICO, INC. 

AEC International (USA) Inc. ENCANA INTERNATIONAL (USA) INC. 

AEC Marketing (USA) Inc. ENCANA MARKETING (USA) INC. 

AEC Oil & Gas (USA) Inc. ENCANA OIL & GAS (USA) INC. 

AEC Oil & Gas Co. Partnership ENCANA OIL & GAS PARTNERSHIP


AEC Oil & Gas Co., Ltd. ENCANA OIL & GAS CO. LTD 

AEC Pipelines (USA) Inc. ENCANA PIPELINES (USA) INC 

AEC Pipelines, Ltd ENCANA PIPELINES, LTD 

AEC Storage & Hub Services, Inc. ENCANA GAS STORAGE INC. 

AEC West Ltd. ENCANA WEST LTD 

AERA ENERGY, LLC 

Aetna Oil Co. 1950 STATOIL ENERGY INC 

Agate Petroleum Inc. ST. MARY LAND & EXLORATION CO. 

AGM Incorporated MAXUS EXPLORATION 

AGS INVESTMENTS LLC managed by AVIVA 

AGS LIMITED PARTNERSHIP managed by AVIVA 

Aikman Petroleum, Inc 1983 * ENERTEC CORP. 

Air Pilot Oil HESS COMPANIES 

AJA Resources ADAMS RESOURCES & ENERGY 

Alamco, Inc. CHESAPEAKE ENERGY CORP. 

Alameda Energy, Inc. SLAWSON EXPLORATION COMPANY, INC. 

Alamo Oil & Gas, Ltd. GLOBAL NATURAL RESOURCES CORP. 

Alamo Petroleum FARMLAND INDUSTRIES, INC. 

Alamo Petroleum Co. ANADARKO E&P COMPANY, LP 

Alaska Interstate Co. 1982 UNIMAR CORP. 

Alberta Energy Co., Ltd. (AEC, Ltd.) ENCANA CORP. 

Alco Oil & Gas 1969 ANADARKO E&P COMPANY, LP 

Alcorn Oil Co 1929 CONOCOPHILLIPS 

Alder Oil Co. 1946 NEWMONT OIL CO. 

Alene Oil Co. 1989 TENKAY RESOURCES, INC. 

Alexander Energy Corp. SANDRIDGE ENERGY, INC. 

Allegheny Land & Mineral 1983 ALAMCO INC. 

Allegro Petroleum, Inc. NORTHSTAR RESOURCES, INC. 

Allen Oil Co. 

ALLIANCE PETROLEUM CORP. 

ANADARKO E&P COMPANY, LP 

Allied Ashland STATOIL ENERGY INC 

Allied Chemical CONOCOPHILLIPS 

Allied Chemical Corp CONOCOPHILLIPS 

Allied Oil Co. ASHLAND OIL INC. 

Allied Oil Co. 1948 ASHLAND OIL & REFINING CO. 

Alma Oil Co. 1915 Shell Oil Co. 

Alminex LTD CANADIAN SUPERIOR 

Alpar Resources PLAINS EXPLORATION & PRODUCTION COMPANY 

Alpar Resources Inc. 1981 ANADARKO E&P COMPANY, LP 

Alta Energy Corp. DEVON ENERGY CORP. 

Altair Oil & Gas Co. 1964 PIONEER NATURAL RESOURCES USA, INC 

Altura Energy OCCIDENTAL PERMIAN, LP 

Amalgamated Bonanza Petro 1979 CHEVRON CORP 

Amarex, Inc. CALPINE NATURAL GAS, LP 

Amarex, Inc. 1985 TGX CORP. (Templeton Energy)


Amarillo Minerals, Inc. 1970 PIONEER NUCLEAR, INC. 

Amarillo Oil Co. PIONEER NATURAL RESOURCES USA, INC 

Amarillo Oil Co. 1986 PIONEER NATURAL RESOURCES USA, INC 

Amax Oil & Gas, Inc. ANADARKO E & P CO. 

Amax Petroleum Corp. ANADARKO E & P CO. 

Ambassador Oil Corp. 1965 ANADARKO PETROLEUM CORPORATION 

AMBRIT ENERGY CORP. 

Amcan Oil Corp 1970 CONOCOPHILLIPS 

Amcan Oil Corp. 1952 LARIO OIL & GAS CO. 

Amcog Acquisition Corp. see Dominion Exploration & Production Inc 

Amdel Inc. 1977 TOTAL E&P USA INC 

Amerac Energy Corp. UNIT CORP. 

Amerada Hess Corp. HESS CORPORATION 

Amerada Petroleum Corp. 1969 HESS CORPORATION 

American Agricultural Chemical CONOCOPHILLIPS 

American Cometra Inc. RANGE RESOURCES INC. 

American Corporate Resources, Inc. 

AMERICAN ENERGY EXPLORATION 

CONOCOPHILLIPS 

American Exploration Acquisition Co. see Dominion Exploration & Production Inc 

American Exploration Acquisition - VI Corp. see Dominion Exploration & Production Inc 

American Exploration Co. (Houston) see Dominion Exploration & Production Inc 

American Exploration Gas Systems Corp. see Dominion Exploration & Production Inc 

American Exploration Operating Co. see Dominion Exploration & Production Inc 

American Exploration Production Co. see Dominion Exploration & Production Inc 

American Independent Oil Co. 1970 CONOCOPHILLIPS 

American Liberty Oil Co. TOTAL E&P USA INC 

American Liberty Oil Co. 1957 TOTAL E&P USA INC 

American Maracaibo FELMONT OIL CORP. 

American Maracaibo Co. 1958 FELMONT OIL CORP. 

American Metal Co. (LTD) ANADARKO E & P CO. 

American Monertra, Inc. AVENEG, INC 

American National Petroleum Company PATRICK PETROLEUM CO. 

American Nat'l Gas Production SANDRIDGE ENERGY, INC. 

American Natural Energy Corp. SANDRIDGE ENERGY, INC. 

American Natural Gas Production Co. EL PASO E&P COMPANY, LP 

American Net Profits Partnership - VII Ltd. see Dominion Exploration & Production Inc 

American Oil Co 1961 BP AMERICA 

American Oil Co. of Texas 1952 EXXON MOBIL CORP. 

American Pacific International 1979 PETRO LEWIS CORP. 

American Pacific, Int'l (API) HESS CORPORATION 

American Petrofina Co. of Texas 1985 TOTAL E&P USA INC 

American Petrofina Expl. Co. 1994 TOTAL E&P USA INC 

American Petrofina Foundation 1990 TOTAL E&P USA INC 

American Petrofina Marketing Inc. 1985 TOTAL E&P USA INC 

American Petrofina Pipeline Company ALON USA LP


American Petrofina, Inc. 1991 TOTAL E&P USA INC 

American Petroleum HESS CORPORATION 

American Producing Properties Co. see Dominion Exploration & Production Inc 

American Production Partnership LTD II, etc see Dominion Exploration & Production Inc 

American Quasar Petroleum Co. 1987 UNIT CORP. CO. 

American Republic Corp. 1954 BP AMERICA 

American Reserve Corporation see Dominion Exploration & Production Inc 

AMERICAN RESOURCES INC. 

American Royalty Trust 1987 FREEPORT-MCMORAN ENERGY PTNRS 

Ameriplor Corp. see Dominion Exploration & Production Inc 

Ameritrus Petroleum Corporation JP MORGAN CHASE & CO 

Ameritrust Texas, N.A. JP MORGAN CHASE & CO 

Amerox Acquisition Corp. see Dominion Exploration & Production Inc 

Amex 1980, Ltd. see Dominion Exploration & Production Inc 




Amex Oil Company see Dominion Exploration & Production Inc 

Amex Production Partnership Ltd. see Dominion Exploration & Production Inc 

Amherst Coal Co. 1981 MAXUS ENERGY CO. 

Aminoil Dev. Inc. BURMAH OIL & GAS CO. 

Aminoil USA Inc. 1984 CONOCOPHILLIPS 

Amkam Acquistion Corp. see Dominion Exploration & Production Inc 

Amoco Canada Petro Co. Ltd. BP CANADA 

Amoco Corp. BP AMERICA 

Amoco Production Co. MIDWEST OIL CORP & PANAM PET CORP 

Amoco Production Co. BP AMERICA 

AMPCO Corporation 1977 TOTAL E&P USA INC 

Ampeco 1976-1 Ltd. BROCK EXPLORATION CORPORATION 

Ampeco 1980-1 Ltd. BROCK EXPLORATION CORPORATION 

Amquest Corp. 1985 BROCK EXPLORATION CORPORATION 

Amtane, Inc. BURMAH LP GAS INC. 

Amtexas (Natural Gasoline) 


ANADARKO PETROLEUM CORPORATION 

WARREN AMERICAN OIL CO. 

Anadarko Production Corp. 1985 ANADARKO PETROLEUM CORPORATION 

Anchor Exploration Co. KERR-MCGEE CORP 

Anchor Oil & Gas Co. 1917 CONOCOPHILLIPS 

Ancon Partnership, Ltd. 

ANDERMAN OPERATING CO., INC. 

see Dominion Exploration & Production Inc 

Anderman/Smith Operating Co. ST. MARY LAND & EXLORATION CO. 

Anderson & Kerr KERR-MCGEE CORP 

Anderson Exploration, Ltd (Canada) DEVON ENERGY CORP. 

Anderson Oil Co. CHESAPEAKE ORC, LLC 

Anderson Summit Inc. 1986 DERRICK PETROLEUM INC.


Anderson-Prichard BURLINGTON RESOURCES 

Andover Oil Co. 1982 SANTA FE MINERALS, INC. 

ANDREW OIL AND GA PARTNERSHIP 

Andrew Oil and Gas Royalties, Inc. ANDREW OIL AND GAS PARTNERSHIP 

Andrews Petroleum Corp. 1924 

ANDREWS PRODUCTION CO. 

FOREST OIL CORP. 

Anglo Energy Ltd. 1983 ROSEWOOD RESOURCES INC. 

ANM Services Corp. see Dominion Exploration & Production Inc 

Annie R. Bass Grandson's Trust fbo Sid ARBGT (SRB) O&G TX (WY)(LA)(MULTI-STATE) L.P. 

Annie R. Bass Grandson's Trust fbo Lee ARBGT (LMB) O&G TX (WY)(LA)(MULTI-STATE) L.P. 

Annie R. Bass Grandson's Trust fbo Rob ARBGT (RMB) O&G TX (WY)(LA)(MULTI-STATE) L.P. 

ANR Production Co. 1985 EL PASO E&P COMPANY, LP 

Anschutz Oil Co. Inc. 1970 ANSCHUTZ CORP., INC. 

Antares Oil 1986 OXFORD CONSOLIDATED, INC. 

Antero Resources I, LP XTO ENERGY INC. 

Antioch Gathering Company 1992 ANADARKO PETROLEUM CORPORATION 

Antioch Texas Gathering Co. 1992 

ANVIL PETROLEUM CORP. 


AOL Holdings, Inc. 

APACHE CORP. 

CHESAPEAKE ORC, LLC 

Apache Corporation 1985 DAVIS OIL CO. (DAVIS PETRO CORP.) 

Apache Oil & Gas Corp. DOW CHEMICAL 

APCOT_FINADEL Joint Venture 1986 TOTAL E&P USA INC 

APD Company 1989 

APEX OIL CO. 

APACHE CORP 

Appalachian Expl. Inc. GREAT LAKES ENERGY PTRS, LLC 

APX Corporation 1992 ANADARKO PETROLEUM CORPORATION 

APX Western Corporation 1992 ANADARKO PETROLEUM CORPORATION 

Aquilla Energy Resources BLACK HILLS ENERGY 

Arch Mineral Corp. 1969 ASHLAND OIL INC. 

Arch Oil & Gas Company 1993 WAGNER & BROWN, LTD. 

Arch Petroleum, Inc. PLAINS EXPLORATION & PRODUCTION COMPANY 

ARCO Oil & Gas Co. BP AMERICA 

Arco Permian Basin BP AMERICA 

Ardmore Oil Co. 1917 EXXON CORPORATION 

Argent Energy, Inc. 1990 EL PASO E&P COMPANY, LP 

Argo Oil Corp. 1961 BP AMERICA 

Argo Petroleum 1987 * NATIONAL FUEL GAS CO. 

Argonaut Energy Corporation BROCK EXPLORATION CORPORATION 

Argus Production Co. HESS CORPORATION 

Arkansas Fuel Oil Corp. OCCIDENTAL OIL & GAS CORPORATION 

Arkla Exploration 1993 DEVON ENERGY 

Arkla Inc. CENTERPOINT ENERGY, INC. 

Arkoma Holding LLC XTO ENERGY INC. 

Arkoma Production Co. 1994 DEVON ENERGY


Arrowhead 1969 APACHE CORP. 

Arrowhead Energy Corp. RELIANCE ENTERPRISES, INC. 

ARROWSTONE PETROLEUM CORP. 

ARS CONTROL ACCOUNT LP managed by AVIVA 

Artex Exploration Company DEVON ENERGY 

Asamera, Inc. 1988 GULF CANADA RESOURCES LTD. 

ASCA LTD. managed by AVIVA 

Ashland Exploration Company ASHLAND OIL, INC. 

Ashland Oil & Refining Co. 

ASHLAND OIL INC. 

ASHLAND OIL, INC. 

Ashland Oil, Inc. 1979 * PIONEER NATURAL RESOURCES USA, INC. 

Associated Natural Gas Corp. DUKE ENERGY FIELD SERVICES 

Aswell Inc. 1970 TOTAL E&P USA INC 

Atapaz Petroleum, Inc. 1979 WAINOCO OIL CORP. 

Atlantic Refining Co. 1966 BP AMERICA 

Atlantic Richfield Co. BP AMERICA 

Atlas Corporation 1958 TOTAL E&P USA INC 

Auora Gasoline Co. 1959 MARATHON OIL COMPANY 

Aus-Tex Oil & Royalty Corp. 1975 HOUSTON OIL & ENERGY, INC. 

Austral Oil Co. 1978 * EXXON MOBIL CORP. 

Austral Oil Co., Inc. 1982 see Dominion Exploration & Production Inc 

Avance Oil & Gas Co. ANADARKO E&P COMPANY, LP 

Avanti 

AVEN GAS & OIL, INC. 

CHESAPEAKE 

Aviara Energy Corporation 

AVIVA, INC. 

XTO ENERGY INC. 

AX Acquisition Corp. see Dominion Exploration & Production Inc 

Axcon Corp. see Dominion Exploration & Production Inc 

Axem Energy Co. KERR-MCGEE CORP 

Axem Resources Incorporated KERR-MCGEE CORP 

Axem-Blackbird LLC KERR-MCGEE CORP 

Axem-Bluebell LLC KERR-MCGEE CORP 

Axem-JCEC LLC KERR-MCGEE CORP 

Axem-Production LLC KERR-MCGEE CORP 

Axroyalty, Inc. KERR-MCGEE CORP 

AZL Resources 1983 TOSCO CORP. 

Aztec Energy Corp. 1984 WICHITA RIVER OIL CO. 

Aztec Oil and Gas Co. 1976 CONOCOPHILLIPS 

Aztec Resources Corp. 1985 WEPCO ENERGY CO. 

B & A Pipe Line Company 1941, The Henderson Clay Products, Inc. 

B & B Drilling 1965 EXXON MOBIL CORP. 

B & N Petroleum, Inc. 1988 ANADARKO E&P COMPANY, LP 

B.E. Oil and Gas Company 

BALBOA EXPLORATION CO. 

BROCK EXPLORATION CORPORATION 

Balco Energy PLAINS RESOURCES, INC.


Baldridge & King ANADARKO E&P COMPANY, LP 

Ballard & Cordell PLAINS RESOURCES, INC. 

Bankline Oil Co. 1959 CONOCOPHILLIPS 

Barber Oil Exploration Corp. 1981 FREEPORT-MCMORAN ENERGY PTNRS 

Barber Oil Reserves 1965 BP AMERICA 

Barfield Oil Corp. 1989 EVERGREEN OPERATING CORP. 

Bargo Energy Corp. PETROHAWK PROPERTIES, LP 

Barnsdall Oil Co. 1949 SUNOCO PARTNERS MKTG & TERMNALS LP 

Barnett Resources Corp WILLIAMS PRODUCTION RMT. CO. 

BARTELL EXPLORATION 

Baruch-Foster Corp. APACHE CORP. 

Basin Oil Company THE WISER OIL CO. 

Basin Petroleum Corp. 1980 CHEVRON CORP 

Bass Enterprises Production Company 

BASS PARTNERSHIP 

BEPCO, L.P. 

Bates Oil Corp. LASMO ENERGY CORP. 

Bay Petroleum 1955 see Tenneco Inc 

Bayard Drilling Technologies, Inc. NABORS DRILLING USA, LP 

Bayard Drilling, LLC NABORS DRILLING USA, LP 

Bayou Resources, Inc. 1987 NEWFIELD EXPLORATION MID-CONTINENT INC (50%) 

Bayou Resources, Inc. 1987 UNIT PETROLEUM CORP. (50%) 

Bayview Petroleum EXXON MOBIL CORP. 

BBX Oil Corporation GLADSTONE ROYALTIES LLC 

Beacon Exploration Co. TOKLAN OIL AND GAS CORPORATION 

Beacon Oil Co. 1981 ENERGY SOURCES INC. 

Bear State Oil Co. 1928 MARATHON PETROLEUM CO. 

Beard & Hammond JGM COMPANY 

Beard Oil Co. 1988 ANADARKO E&P COMPANY, LP 

Beard Oil Company SENSOR OIL & GAS, INC. 

Beardmore Oil Inc. 1973 CONOCOPHILLIPS 

Beau Coup Oil & Gas Corp. 1986 GREAT RIVER OIL & GAS CORP. 

Belcher Oil Co. 1977 EL PASO E&P COMPANY, LP 

Belco Development Co 1983 EOG RESOURCES, INC. 

Belco Energy Corp. 2001 KERR-MCGEE OIL & GAS ONSHORE, LP 

Belco Energy I, LP KERR-MCGEE OIL & GAS ONSHORE, LP 

Belco Oil & Gas 1983 EOG RESOURCES, INC. 

Belco Oil & Gas 2001 (different company) KERR-MCGEE OIL & GAS ONSHORE, LP 

Belco Petroleum Co. 1983 EOG RESOURCES, INC. 

Belco Petroleum North America, Inc. EOG RESOURCES, INC. 

Belco Wyoming Corporation 

BELCOR, INC. 

BELDEN & BLAKE ENERGY CO. 

EOG RESOURCES, INC. 

Bell Petroleum Co. 1975 * PACIFIC ENTERPRISES OIL CO. (USA) 

Bellwether Exporation Co. PETROHAWK PROPERTIES, LP 

BelNorth Energy Corporation EOG RESOURCES, INC.


BelNorth Petroleum Co. 1986 EOG RESOURCES, INC. 

Belridge Oil Co. 1979 Shell Oil Co. 

Benedum-Trees Oil Co. 1982 KERR-MCGEE CORP. 

BeneTex 88, Ltd. KERRCO INC. 

BeneTex Oil and Gas Ltd. KERRCO INC. 

BENGAL OIL & GAS 

BENJAMIN F. HACKETT & ASSOCIATES 

Benjamin F. Hackett, P.C. BENJAMIN F. HACKETT & ASSOCIATES 

Berea Oil & Gas Corp. 1985 ENERVEST MANAGEMENT PARTNERS LTD 

Berkshire Oil Co. 1961 FRANKEL OIL & GAS CO. 

Beta Operating Co., LLC 

BHP PETROLEU (AMERICAS) INC. 

PETROHAWK PROPERTIES, LP 

Big Dipper Oil Co. 1919 ASHLAND OIL INC. 

Big Five Oil Corp. 1985 ARROWSTONE PETROLEUM CORP. 

Big Piney Oil & Gas Co. SANDRIDGE ENERGY, INC. 

Big Piney Oil & Refining Co. 1955 SANDRIDGE ENERGY, INC. 

Bigheart Pipeline Company (see Koch Oil) 

Bishop Oil Co. 1961 Shell Oil Co. 

Bison Energy Corp PLAINS EXPLORATION & PRODUCTION COMPANY 

Bison Production Company 

B-L ASSOCIATES 

PLAINS EXPLORATION & PRODUCTION COMPANY 

BLACK BEAR LP managed by AVIVA 

Black Hawk Resources Corp 

BLACK HILLS GAS RESOURCES, INC. 

OXFORD CONSILIDATED, INC. 

Black Jack Resources, Inc. ANADARKO E&P COMPANY, LP 

BLACK TYPE LP managed by AVIVA 

Blackbird Co. (DISSOLVED) KERR-MCGEE CORP 

Blackfoot-Cherokee Energy, Inc. 1981 PLAINS PETROLEUM CO. 

Blackgold Energy Resources Inc. 1987 SNYDER OIL PARTNERS LP 

Blackhawk Drilling Co. 1931 KERR-MCGEE CORP. 

Blackhawk Oil Co. 

BLACKSTONE MINERALS CORP. 


Blaffer & Farish 1917 EXXON MOBIL CORP. 

BlaMaCa Resources, Ltd. KERRCO INC. 

Blanco Oil Co. DALEN RESOURCES OIL & GAS CO. 

Bloomfield Royalty Corp. TEXON ENERGY CORP. 

BLUE FOX ROYALTY LP managed by AVIVA 

Bluebird Investment Company 1948 TOTAL E&P USA INC 

BMC Development #1, LP 

BN Financial Services, Inc. 


BN Geothermal, Inc CONOCOPHILLIPS 

BN Leasing, Inc CONOCOPHILLIPS 

BNI Energy CONOCOPHILLIPS 

BNL Development Corp. CONOCOPHILLIPS 

Bodcaw Oil Properties 1979 PLACID OIL CO.


Bogert Oil Co. DOMINION OKLA TEXAS EXPL & PROD. INC. 

Bois D'Arc Energy Inc STONE ENERGY CORPORATION 

Bolero Energy Corp. 6/89 KAISER-FRANSIS OIL COMPANY 

BOLTEX OIL & GAS CO. 

Bomac Exploration Co. 1975 

BONANZA PETROLEUM, INC. 

SAMSON PROD SERVICES COMPANY 

Bonanza Resources, Inc. 1984 PLAINS PETROLEUM CO. 

Bonnville Fuels Corp. EVERGREEN RESOURCES, INC. 

Bonray Driling Corp. NABORS DRILLING USA, LP 

Boomer Marketing Corp. 

BORDER EXPLORATION CO. 

SANDRIDGE ENERGY, INC. 

Boston-Wyoming Oil Co. 1928 CONOCOPHILLIPS 

Boswell Corp. SAMSON PROD SERVICES COMPANY 

Boundary Acquisition, Inc. see Dominion Exploration & Production Inc 

Boundry Oil Co. see Dominion Exploration & Production Inc 

Boundry Properties, Inc. 

BOUNTY PRODUCTION CO. 


Boyd Oil Corp. 1924 

BP AMERICA 


BP Exploration & Production Inc. BP AMERICA 

BP Exploration 1990 TEXICON OIL & GAS CO. 

Bracell Petroleum MURPHY OIL CORP. 

Bracken Exploration DIVERSIFIED ENERGIES, INC. 

Bradco Oil & Gas Co. NIKLOS OIL & GAS CO. 

Bradley Producing Corp. 1984 HESS CORPORATION 

Bradley Resources HESS CORPORATION 

Bradmar Petroleum Corp. SANDRIDGE ENERGY, INC. 

Brammer Supply (O&G Div) HEP OIL CO LTD 

Brandywine Oil BP AMERICA 

Brayton Land 1989 AMAX Coal Company 

Brazos Coal, Ltd. THOUSAND OAKS DEV. CO. JT. VEN. 

Brazos Exploration Co. GOLIAD OPERATING COMPANY 

Brazos Oil & Gas Co. DOW CHEMICAL CO. 

Brazos Production Co. GOLIAD OPERATING COMPANY 

Brazos Young Corp. 1989 

BRECKENRIDGE OPERATING CO. 

TENKAY RESOURCES INC. 

Brewer Oil & Gas Co. HESS CORPORATION 

BRG Petroleum Inc. 1998 DEVON ENERGY PROD. CO, LP 

BRG Petroleum Corp. 2005 

BRG ENERGY INC. 

CHESAPEAKE ENERGY CORP. 

Bridewill & Darsey DARSEY OIL CO. 

Bridge Oil (USA) Inc. PARKER & PARSLEY DEVELOPMENT CO. 

Bridge Oil Company PARKER & PARSLEY DEVELOPMENT CO. 

Bridge Oil Company, L.P. PARKER & PARSLEY DEVELOPMENT CO. 

Bridge Oil Production Company PARKER & PARSLEY DEVELOPMENT CO.


Bridger Exploration Inc 1984 OXFORD CONSILIDATED, INC. 

Bridger Petroleum Corp 1978 PRESDIO OIL CO. 

Brinson & Colline UNITED PRODUCTION 

British American Oil Producing Co. 1956 DALEN RESOURCES OIL & GAS CO. 

BRITISH PETROLEUM CO. PLC 

Britoil PLC 1987 * see Dominion Exploration & Production Inc 

Britoil PLC 1988 BRITISH PETROLEUM CO. PLC 

Britoil U.S. Holdings Inc. see Dominion Exploration & Production Inc 

Britoil Ventures, Inc. 

BROCK EXPLORATION CORPORATION 

HIGHMOUNT EXPLORATION & PRODUCTION LLC 

Brock Gas Systems, Inc. BROCK EXPLORATION CORPORATION 

Brock Hydrocarbons, Inc. BROCK EXPLORATION CORPORATION 

Brock Oil and Gas Corporation BROCK EXPLORATION CORPORATION 

Brock Oil Corporation BROCK EXPLORATION CORPORATION 

Brock Production Corporation BROCK EXPLORATION CORPORATION 

Brock Resources, Inc. BROCK EXPLORATION CORPORATION 

Broken Arrow Royalty Co TOKLAN OIL AND GAS CORPORATION 

Brookhaven ENERGEN RESOURCES CORP. 

Brookhaven Oil Co. 1979 DALEN RESOURCES OIL & GAS CO. 

Brooks Hail Oil Co. 1984 SANDRIDGE ENERGY, INC. 

Brown Seal Oil Corp. 1924 FOREST OIL CORP. 

Brunner ENGELKE 

Bryson Oil & Gas Corp. 1988 CASPEN OIL, INC. 

BTU Operating Co. 1986 ENEX RESOURCES CORP. 

Buckhorn Petroleum Co. 1984 MCN EXPLORATION 

Buckhorn Petroleum Co. 1986 APACHE CORP. 

Buffalo Oil Co. 1958 CONOCOPHILLIPS 

Buffalo Oilfield Ser. Inc. GREAT LAKES ENERGY PARTNERS LLC 

Bunker Exploration, Inc. 1984 CHAPMAN ENERGY INC. 

Burkhard Petroleum Corp. 1987 ZG ENERGY CORP. 

Burlington Northern Oil & Gas Div. CONOCOPHILLIPS 

Burlington Northern Petroleum Inc. CONOCOPHILLIPS 

Burlington Resources Oil & Gas Co, LP CONOCOPHILLIPS 

Burmah Oil & Gas Co. 1976 * CONOCOPHILLIPS 

Bush Exploration 1982A-Ltd. 

BUTTES OIL & GAS CO. 

CABOT OIL & GAS CORP. 

Byrd Oil Corp. EXXON MOBIL CORP. 

C & K Petroleum, Inc. 1980 UNIMAR CORP. 

C.F. Braun Co. 1980 SANTA FE MINERALS, INC. 

C.J. Wrightsman W.A. MONCRIEF 

C.U. Bay see Tenneco Inc 

C.V. Lyman Shell Oil Co. 

C.J. Wrightsman W.A. MONCRIEF, JR. 

Calco 1961 CHEVRON CORP 

California Co. 1961 CHEVRON CORP


California Oil Co. 1977 CHEVRON CORP 

California Oilfields, Ltd. 1913 Shell Oil Co. 

California Petroleum Corp. 1928 CHEVRON CORP 

CALLON PETROLEUM CO. 

Calpine Corporation ROSETTA RESOURCES INC 

Calpine Natural Gas Co. ROSETTA RESOURCES INC 

Calplans Oil & Gas Corp. 

CALUMET LUBRICANTS CO. 

MISSION RESOURCES PARTNERS LP 

Calumet Oil Co. CHAPARRAL ENERGY INC. 

Calvert Exploration Co. 1975 SUNOCO PARTNERS MKTG & TERMNALS LP 

Calvin Petroleum Corp. 1985 ENERGY OIL, INC. 

Cambridge Related Assets, Inc. GLOBAL NATURAL RESOURCES CORP. 

Cambridge Royalty Co. 1986 GLOBAL NATURAL RESOURCES CORP. 

Cameron Meadows Land Co. 1978 SANTA FE MINERALS, INC. 

Camroy Acquisition Corporation GLOBAL RESOURCES CORP 

Camroy Acquisition, Inc. GLOBAL RESOURCES CORP 

Cannan CHESAPEAKE KNAN ACQUISITION, LLC 

Canterra Energy Ltd. HUSKY OIL LTD. 

Canterra Petroleum, Inc. 1988 DANOV CORPORATION 

Canterra Petroleum, Inc. 1988 DABROS PROPERTIES, INC. 

Canusa Energy, Inc. 1984 PLAINS PETROLEUM CO. 

Canyon Energy, Inc. 1993 WAGNER & BROWN, LTD. 

Capital Fina Oil Company Inc. 1979 TOTAL E&P USA INC 

Capitan, Inc. E.E. NEARBURG 

Capitol Fina Pipeline Company 1985 TOTAL E&P USA INC 

Carbon Energy Corp. USA PIONEER NATURAL RESOURCES USA, INC. 

Cardinal Petroleum Co. CONOCOPHILLIPS 

Caribou Four Corners 1984 HEADINGTON INVESTMENTS, INC. 

Carl Oil & Gas 1988 MCFARLAND ENERGY, INC. 

Carlin Oil & Gas Co. KAISER-FRANCIS OIL COMPANY 

Carolina Oil & Gas OCCIDENTAL OIL & GAS CORPORATION 

Carper Drilling MCFARLAND ENERGY, INC. 

Carr Oil Co. SUNOCO PARTNERS MKTG & TERMNALS LP 

Cartel Inc. 1988 WASHITA PRODUCTION CO. 

Carter Oil Co. 1959 EXXON MOBIL CORP. 

Cascade CHEVRON CORP 

Case-Pomeroy Oil Corp. 1952 * FELMONT OIL CORP. 

Casex Co. 

CASTLE ENERGY CORP. 1985 

HESS CORPORATION 

CATAMOUNT ROYALTY PARTNERS, LTD. 

CAVENHAM ENERGY RESOURCES 

managed by AVIVA 

Cayman Corporation CAYMAN RESOURCES CORPORATION 

Cayman Exploration Corporation 

CAYMAN RESOURCES CORP. 

CAYMAN RESOURCES CORPORATION 

CDC Ada, Inc. SUNDOWN ENERGY INC.


CEI Bristol Aquisitions CHAPARRAL ENERGY INC. 

Celeron Corp. 1987 CHEVRON CORP 

Celeron Corp. 1987 EXXON MOBIL CORP. 

Cenaro Oil & Gas CHEVRON CORP 

Cenergy Corporation see Dominion Exploration & Production Inc 

Cenergy Exploration Co. see Dominion Exploration & Production Inc 

Cenergy Financial Corporation see Dominion Exploration & Production Inc 

Cenergy International Company see Dominion Exploration & Production Inc 

Cenergy Midwest Company see Dominion Exploration & Production Inc 

Cenergy Transmission Company see Dominion Exploration & Production Inc 

CENEX, INC. 

Centex Oil & Gas, Inc. CONQUEST EXPLORATION CO. 

Central Louisiana Energy Corp. 1982 EXXON MOBIL CORP. 

Central Oil & Gas, Inc. ANADARKO E&P COMPANY, LP 

Central-Del Rio Oils Ltd. PANCANADIAN PETROLEUM CO. 

Centura Energy Corp. 1983 CASTLE ENERGY CORP. 

Century Oil & Gas 1987 CHARTERHALL PLC 

Century Production, Inc. 1986 HESS CORPORATION 

CF Industries, Inc. 1987 * KELLEY OIL CORP. 

Chalaco, Ltd. (Dissolved) KERR-MCGEE CORP 

Chambers & Kennedy UNIMAR CORP. 

Champlin Oil & Refining Co. 1964 ANADARKO E&P COMPANY, LP 

Champlin Petroleum Co. 1987 ANADARKO E&P COMPANY, LP 

Chanslor Western Oil/Dvlpmt. Co. 1978 DEVON ENERGY 

Chanslor-Canfield 1953 DEVON ENERGY 

Chaparral Energy Development Corp. 1980 

CHAPARRAL ENERGY, LLC 

NUGGET OIL CORP. 

Chaparral Oil Inc. CHAPARRAL ENERGY INC. 

Chapman Energy Inc. 

CHAPMAN RESOURCES 

CHARLIE BARTON 

CODA ENERGY CORP. 

Charter Exploration & Production 1977 

CHARTERHALL PLC 

CRYSTAL OIL CO. 

Chase Petroleum Co 1968 APACHE CORP. 

Cheniere Petroleum Corp. DEVON ENERGY 

Cherokee Resources, Inc. PETROHAWK PROPERTIES, LP 

Cherryville Corp. 

CHESAPEAKE ENERGY CORP. 


TEXAS INTERNATIONAL PETROLEUM 

Chessie Resources, Inc. Minerals Only ENERGEN RESOURCES CORP. 

Chevron Midcontinent CHEVRON CORP 

Chevron Production Company CHEVRON CORP 

Chevron USA CHEVRON CORP 

Chevron-Texaco CHEVRON CORP 

Chicago Corp. 1954 ANADARKO E&P COMPANY, LP


Chief Holdings, LLC DEVON ENERGY 

Chief Oil & Gas LLC DEVON ENERGY 

Chieftain Petroleum, Inc. 1986 UMC PETROLEUM CORP. 

Chinook Resources BRIDGE OIL COMPANY, L.P. 

Chipola Oil Corp. 1982 TERRAPET ENERGY CORP. 

Chisos Trading Co. KAISER-FRANCIS OIL CO. 

Christie, Mitchell & Mitchell Co. DEVON ENERGY 

CIG Exploration, Inc. EL PASO E&P COMPANY, LP 

CIMA ENERGY, LTD. 

CINCO GENERAL PARTNERSHIP 

Cisneros Oil Corporation 1967 TOTAL E&P USA INC 

Citation 1987 Investment LP CITATION 2002 INVESTMENT LP 

Citation 1989 Investment LP CITATION 2002 INVESTMENT LP 

Citation 1998 Investment LP 

CITATION 2002 INVESTMENT LP 

CITATION 2002 INVESTMENT LP 

Citation 1994 Investment LP CITATION 2002 INVESMENT LP 

Citgo Petroleum Corp. Pre 9/83 

CITGO PETROLEUM CORPORATION 

OCCIDENTAL OIL & GAS CORPORATION 

Cities Service Oil & Gas Corp. OCCIDENTAL OIL & GAS CORPORATION 

Cities Services Oil Co. 1982 OCCIDENTAL OIL & GAS CORPORATION 

Citrus County Land Bureau, Inc. HESS CORPORATION 

Clark Oil & Refining Co. APEX OIL CO. 

Clark Resources, Inc. 1989 BRG PRODUCTION CO. 

Clarkland Royalty, Inc. CONOCOPHILLIPS 

Clarkland, Inc. CONOCOPHILLIPS 

Classic Oil & Gas, Inc. XTO ENERGY INC. 

Classic Petroleum, Inc. XTO ENERGY INC. 

Clusde R Lambe KOCH EXPLORATION COMPANY, LLC 

Clephane Oil Co. 1912 Shell Oil Co. 

Cliffwood Energy Co. 1988 

CLINTON GAS SYSTEMS, INC. 

CHEVRON 

Clinton Oil Co. 1976 BHP PETROLEUM (AMERICAS) INC. 

Clymore Petroleum Corp. 1968 

CMS ENEGY, INC. 

TESORO PETROLEUM CORP. 

CMS Nomeco Oil & Gas NEWFIELD EXPL MID-CONTINENT INC. 

CNG Producing Co. see Dominion Exploration & Production Inc 

COAL CREEK EXPLORATION COMPANY,L.L.L.P. managed by AVIVA 

Coastal Derby Refining Company EL PASO MARKETING, INC. 

Coastal Oil & Gas Corp. EL PASO E&P COMPANY, LP 

Coastal Oil & Gas Gathering, LP EL PASO E&P COMPANY, LP 

Coastal Oil & Gas USA, LP EL PASO E&P COMPANY, LP 

Coastal Oil Co. 1958 CONOCOPHILLIPS 

Coastal Production Co. EOG RESOURCES, INC. 

Coastal Refining and Marketing EL PASO MARKETING 

Coastal States Crude Gathering Co. EL PASO MARKETING


Coastal States Gas Production Co. EL PASO E&P CO., LP 

Coastal States Trading, Inc. EL PASO MARKETING 

Cobo & Co, Inc. TOKLAN OIL AND GAS CORPORATION 

Coda Energy EOG RESOURCES, INC. 

CoEnergy Anadarko, Inc. SUNDOWN ENERGY INC. 

CoEnergy Central Expl. Inc. SUNDOWN ENERGY INC. 

CoEnergy Enhanced Prod. Co. SUNDOWN ENERGY INC. 

CoEnergy Midcontinent, Inc. SUNDOWN ENERGY INC. 

CoEnergy Operating Co. SUNDOWN ENERGY INC. 

CoEnergy Ventures, Inc. SUNDOWN ENERGY INC. 

COFFEYVILLE RESOURCES, LLC 

Coline Gasoline Corp. 1977 DEVON ENERGY 

Coline Oil Corp. 1977 DEVON ENERGY 

Colonial Oil Productions Co. 1966 TOTAL E&P USA INC 

Colorado Oil & Gas Corp. 1973 EL PASO E&P CO., LP 

Colorado Oil Co., Inc. EL PASO E&P CO., LP 

Colorado Western Exploration, Inc. 1958 CONSILIDATED OIL & GAS, INC. 

Colt Intermodal Inc. CONOCOPHILLIPS 

Coltexo Corp. OCCIDENTAL OIL & GAS CORPORATION 

Columbia Gas Development Corp. 

COLUMBIA NATURAL RESOURCES LLC 

HUNT ENERGY (AEC), INC. 

Columbian Carbon Co. 1963 OCCIDENTAL OIL & GAS CORPORATION 

COLUMBINE I LP managed by AVIVA 

COLUMBINE II LP managed by AVIVA 

Cometra Oil & Gas Co. RANGE RESOURCES INC. 

Commodore Estates, Inc. GREAT LAKES ENERGY PARTNERS LLC 

Common Parent Corporation CONOCOPHILLIPS 

Commonwealth Oil Co. 1961 JUPITER CORP. 

Commonwealth Petroleum Co. 1922 Shell Oil Co. 

Comprehensive Resources Corp. 1984 

COMSTOCK RESOURCES, INC. 

DEVON ENERGY 

Concho Oil Co. 

CONDER 


Conoco, Inc. 



Conquest Associates see Dominion Exploration & Production Inc 

Conquest Associates 1983 see Dominion Exploration & Production Inc 

Conquest Associates 1985 see Dominion Exploration & Production Inc 

Conquest Associates II see Dominion Exploration & Production Inc 

Conquest Associates-I Limited see Dominion Exploration & Production Inc 

Conquest Associates-II Limited see Dominion Exploration & Production Inc 

Conquest Exploration Company see Dominion Exploration & Production Inc 

Conquest Texas, Inc. see Dominion Exploration & Production Inc 

Conquest Transmission Company see Dominion Exploration & Production Inc 

Conquest/N 1982 Limited Partnership see Dominion Exploration & Production Inc


Conquest/N 1985 Limited Partnership see Dominion Exploration & Production Inc 

Conquest/N Matagorda LP see Dominion Exploration & Production Inc 

Conquest/NM Matagorda LP see Dominion Exploration & Production Inc 

Conquest/NWM 1982 Texas Oil & Gas LP see Dominion Exploration & Production Inc 

Conquest/NWM Texas Oil & Gas see Dominion Exploration & Production Inc 

Conquest/P 1982 Limited Partnership see Dominion Exploration & Production Inc 

Conquest/P 1985 Limited Partnership see Dominion Exploration & Production Inc 

Conquest/P Matagorda Limited Partnership see Dominion Exploration & Production Inc 

Consolidated Gas Supply Corp. see Dominion Exploration & Production Inc 

Consolidated Natural Gas see Dominion Exploration & Production Inc 

Consilidated Oil & Gas Inc HUGOTON ENERGY CORP. 

Consolidated Oil Corp. 1943 BP AMERICA 

Consolidated Oil/Gas Acquisition Co. 1990 CONSILIDATED OIL & GAS, INC. 

Consolidated Production FREEPORT-MCMORAN ENERGY PTNRS 

Consolidated Rimrock Oil Corp. 1958 CONSOLIDATED OIL & GAS, INC. 

Continental Eastern Corp. CHEVRON CORP 

Continental Oil Co. CONOCOPHILLIPS 

Continental Resources Corp. CHAPMAN ENERGY INC. 

Continental Western Corp. CHEVRON CORP U.S.A. INC. 

CONVEST ENERGY CORP. 

Cook & Hackett, ttorneys BENJAMIN F. HACKETT & ASSOCIATES 

Coquina Oil FREEPORT-MCMORAN ENERGY PTNRS 

Coquina Oil Corp. PRIMARY FUELS, INC. 

Coquina Oil Corp. 1993 AMERICAN NATIONAL PETROLEUM CO. 

Cornet Oil * CONDER 

Coronado Corp. 1941 BP AMERICA 

Corpus Christi Oil & Gas Co. 

CORTEX OPERATING CO. 

DALEN RESOURCES OIL & GAS CO. 

Cortez Operating Co. ENCORE OPERATING, LP 

Cosden Oil & Chemical Co. 1985 TOTAL E&P USA INC 

Cosden Oil Co. 1932 CONOCOPHILLIPS 

Cosden Petroleum Corp. 1963 TOTAL E&P USA INC 

Cosden Pipe Line Company 1994 

COSDEN, INC. 

FINA PIPE LINE CO. 

Coseka Resources (USA) Limited WAGNER & BROWN, LTD. 

Cotton Petroleum 1986 APACHE CORP. 

Cotton Petroleum Corp. 1987 MORAINE PRODUCTION LTD. 

Coty LARIO OIL & GAS CO. 

Cow Gulch Oil Co. 1973 

COX & PERKINS EXPLORATION, INC. 

COX OIL & GAS, INC. 

K.R.M. PETROLEUM CORP. 

CPC Exploration Co. 1985 COX & PERKINS EXPLORATION, INC. 

CRA Inc FARMLAND INDUSTRIES, INC. 

CRA International, Ltd. GLOBAL NATURAL RESOURCES CORP. 

Crainfill & Reynolds 1933 EXXON MOBIL CORP.


Cravens Oil Co. XTO ENERGY INC. 

CREDO PETROLEUM CORP. 

CRESCENT OIL & GAS CORP. 

Crescent Petroleum Corp. CRESCENT OIL & GAS CORP. 

Crescent Royalty Co. 1931 CONOCOPHILLIPS 

Creslenn Oil Co. 1979 SOUTHWEST ROYALTIES, INC. U.S. OIL CO. 

Crestmont Oil & Gas Co. 1981 OCCIDENTAL OIL & GAS CORPORATION 

Crimson Energy 

CRIMSON EXPLORATION INC 

J-M HUBER CORP. 

Cross Bell Company HAMPTON RESOURCES 

Cross Timbers Oil Company XTO ENERGY INC. 

Cross Timbers Oil Company LP XTO ENERGY INC. 

Cross Timbers Operating Co. XTO ENERGY INC. 

Cross Timbers Production XTO ENERGY INC. 

Crow Creek Energy, LLC 

CROWN CENTRAL PETROLEUM CORP. 

PENN VIRGINIA CORP. 

Crown Zellerbach (Energy Div.) 1985 

CRYSTAL OIL CO. 

CAVENHAM ENERGY RESOURCES 

CSX Oil & Gas Corp. 1988 ENERGEN RESOURCES CORP. 

Cudahy Refining Co. BP AMERICA 

Cuervo Resources, Inc. 

CUERVO, INC. 

CUERVO, INC. 

Cullen BURLINGTON RESOURCES 

Cummins & Walker Oil Co., Inc. DALEN RESOURCES OIL & GAS CO. 

CXY Energy Inc. NEXEN PETROLEUM U.S.A. INC. 

Cycle Oil & Gas Corp. FRONTIER ENERGY CORP. 

Cyclops Corp. 1987 * ROSCOE GAS & OIL CO. 

Cypher Energy Corp. 

D.C. BINTLIFF 

D.D.I., INC 1989 

ALLIANCE EXPLORATION CORP. 

Dabros Properties 1988 

DABROS PROPERTIES 1988 

JN EXPLORATION & PRODUCTION 

Dacresa ENERGEN RESOURCES CORP. 

Dakota Resources, Inc. 1983 VALEX PETROLEUM, INC. 

Dalco Oil Co. 1976 PACIFIC ENTERPRISES OIL CO. (USA) 

Dalen Resources Oil & Gas Co. NEWFIELD EXPLORATION GULF COAST INC 

Dallas Oil & Minerals Inc. RANGE PROD. CO. 

Dallas Sunbelt Energy, Inc. 1982 CHAPMAN ENERGY, INC. 

Dal-Oil Inc. GREAT LAKE ENERGY PARTNERS LLC 

Damson Oil Corp PIONEER NATURAL RESOURCES USA, INC. 

Danciger Oil & Refining Co. 1948 BP AMERICA 

Daniel Oil Co. 

DANOV CORPORATION 1988 

PARTNERS OIL CO. 

Darby Petroleum Co. 1944 

DARSEY OIL CO. 

SUNOCO PARTNERS MKTG & TERMNALS LP


Davis Oil Co. DAVIS PETROLEUM CORP. 

Davis Oil Co. (Davis Petroleum Corp.) QUINOCO CO. 1988 

Davis Oil Co. 1981 PRESDIO OIL CO. 

Dawn Energy Co. 1986 ONEOK EXPLORATION CO. 

Dean Brothers BP AMERICA 

Deca Energy Corp. 1985 K.R.M. PETROLEUM CORP. 

Deep Gas Exploration Inc. 1985 RATEX RESOURCES INC. 

Deep Rock Oil Co. 1954 * CONOCOPHILLIPS 

Deep Rock Oil Corp. 1955 KERR-MCGEE CORP 

DEKALB ENERGY CO. 

DeKalb Petroleum Co. 7/92 (Depco) DOMINION OKLA TEXAS EXPL & PROD. INC. 

Del Mar Petroleum, Inc. SAMSON PROD SERVICES COMPANY 

Del mar Production CONOCOPHILLIPS 

Del Ray Petrouelm Co. 1952 see Tenneco Inc 

Delhi Oil Corp. 1955 see Tenneco Inc 

Delhi-Taylor Oil Corp. 1964 see Tenneco Inc 

Delta Drilling Company KERR-MCGEE CORP 

Delta Drilling USA, LP NABORS DRILLING USA, LP 

Deltaus Corp. NABORS DRILLING USA, LP 

Delwood 1964 APACHE CORP. 

Deminex U.S. Oil Co 

DENOVO OIL & GAS CO. 

SOUTHWEST ROYALTIES, INC. 

Depco, Inc. DEKALB ENERGY CO. 

Derby Refining Company 

DERRICK PETROLEUM INC. 

EL PASO MARKETING, INC. 

Desert American Agency, Inc. CONOCOPHILLIPS 

Desert Magic Inc. CONOCOPHILLIPS 

Desert Royalty Corp (1992) MARIENFELD ROYALTY CORP. 

Destry Gas Co., Ltd. PETER PAUL PETROLEUM CO., DEN. PTNR. 

Devex Resources 

DEVON ENERGY CORP. 

DEVON ENERGY PROD. CO, LP 

KERR-MCGEE CORP 

Devon Louisiana Corp DEVON ENERGY PROD. CO, LP 

Devon SFS Operating Inc. DEVON ENERGY CORP. 

Devonian Gas & Oil Co. CHEVRON CORP 

Devx Energy, Inc. 

DI INDUSTRIES INC. 

COMSTOCK RESOURCES 

Diablo Oil Co. 1987 WICHITA RIVER OIL CO. 

Daimex Co. ANADARKO E&P COMPANY, LP 

Diamond Alkali MAXUS EXPLORATION 

Diamond S Energy DABB ENERGY CO. 

Diamond Shamrock Corp. 1987 MAXUS EXPLORATION 

Diamond Shamrock Offshore Partners LP CONOCOPHILLIPS 

Dickson Oil Company 1949 KAISER-FRANCIS OIL CO. 

Dietrich Resources Corp. 1987 SANDRIDGE ENERGY, INC.


Discovery Oil, Ltd. 1986 SEAHAWK OIL INTERNATIONAL, INC. 

Diversa, Inc. MAYNARD OIL COMPANY 

Diverse Energy Investments FNRC DEI GP 

Diverse GP DIVERSE ENERGY INVESTMENTS 

Diverse GP III FNRC DIII GP 

Diverse Operating Company DIVERSE ENERGY INVESTMENTS 

DIVERSIFIED ENERGIES, INC. 

Dixel Resources, Inc. ANADARKO E&P COMPANY, LP 

Dixie Oil Co. 1919 BP AMERICA 

DKM Energy Inc. INTERCOAST OIL & GAS CO. 

DKM Offshore Energy, Inc. MEDALLION CALIFORNIA PROPERTIES 

DKM Resources, Inc. KCS RESOURCES, INC. 

Dodson Prod., LLC PENT ENERGY, LLC 

Dolphin Energy LLC NEWFIELD EXPLORATION MID-CONTINENT, INC 

Domain Energy Corp RANGE ENERGY CORP. 

Domain Energy Finance Corp RANGE ENERGY FINANCE CORP. 

Domain Energy Guarantor Corp RANGE ENERGY GUARANTOR CORP. 

Domain Energy Prod. Co. RANGE ENERGY VENTURE CORP. 

Domain Energy Ventures Corp. RANGE ENERGY VENTURE CORP. 

Dome Petr. Corp. (U.S. Assets) 1983 * CHEVRON CORP 

Dome Petroleum Ltd. 1988 AMOCO CANADA PETRO CO. LTD 

Dominion (offshore) ENI PETROLEUM CO INC. 

Dominion Black Warrior Basin, Inc. HIGHMOUNT BLACK WARRIOR BASIN, LLC 

Dominion Exploration & Production HIGHMOUNT EXPL AND PROD LLC 

Dominion Midwest Energy, Inc. HIGHMOUNT EXPL & PROD MICHIGAN LLC 

Dominion Midwest Energy, Inc. XTO ENERGY, INC. (all but Michigan) 

Dominion Oklahoma Texas Exploration & Production LINN ENERGY, LLC 

Dominion Resources, Inc. 

DON FRANTZEN 

CONSOL ENERGY INC. 

Don L. Mount BOUNTY PRODUCTION CO. 

Donald Slawson Oil Producer SLAWSON EXPLORATION CO., INC. 

Dorchester Exploration, Inc. 1984 DAMSON OIL CORP. 

Dorfman Production W.H. HEISLER, JR. 

Dorothy Corp. 1984 DEVON ENERGY 

Dorrance FRAZIER 

Double Eagle Exploration, Inc. 

DOW CHEMICAL CO. 

MKI ENERGY, INC. 

Dowdle Oil Corp. 1981 WESTERN NATURAL GAS CO. 

DPI-GP, Inc. CONOCOPHILLIPS 

Drel Petroleum 1979 

DREW CORNELL, INC. 

ORIGINALA PETROLEUM CORP. 

Dreyer Bros., Inc. CONOCOPHILLIPS 

Drillers, Inc. 1985 DI INDUSTRIES, INC. 

Drillexco 1962 BP AMERICA 

Drilling & Exploration Co. 1962 BP AMERICA


DUKE ENERGY FIELD SERVICES 

Duke Energy T & T Co. TEPPCO CRUDE OIL LP 

Dundee Petroleum Co. 1915 Shell Oil Co. 

Duran Energy Corp. 1984 WENTEX INTERNATIONAL, INC. 

DX Oil Co. 1962 SUNOCO PARTNERS MKTG & TERMNALS LP 

Dyco Petroleum Corp. 1985 DIVERSIFIED ENERGIES, INC. 

Dynamar Energy Inc. 1986 KERR-MCGEE CORP 

Dynamic of Texas, Inc. 1979 CONOCOPHILLIPS 

Dynasty Oil & Minerals, Inc. 1984 RANGE PRODUCTION CO. MINERALS, INC. 

E.E. Fogelson 1964 

E.E. NEARBURG 

Shell Oil Co. 

E.H. McDermott J.D. WRATHER, JR. 

E.L. Hilliard II Interests 1988 COMSTOCK RESOURCES, INC. 

E.L. Hilliard III Interests 1988 COMSTOCK RESOURCES, INC. 

E.G. Operating SUNDOWN ENERGY, INC. 

Eagle Energy Inc. 

EAGLE EXPLORATION CO. 

EAGLE OIL & GAS CO. 


Eagle Oil Co. 1978 see Dominion Exploration & Production Inc 

Earlsboro Oil & Gas 12/90 DOMINION OKLA TEXAS EXPLOR. & PROD. INC. 

Earnest H. Lambert GLOBAL NATURAL RESOURCES CORP. 

Earth Resources Co. 1981 see Dominion Exploration & Production Inc 

Eason Oil Co. 1985 EL PASO E&P COMPANY, LP 

East Timbers Oil, LP XTO ENERGY, INC. 

Eastern Petroleum Co. GREAT LAKES ENERGY PARTNERS LLC 

Eastland Oil BP AMERICA 

Eastwash Corp. GREAT LAKES ENERGY PARTNERS LLC 

Easy Wind Oil Co. 1986 DERRICK PETROLEUM INC. 

Echo Oil Corp. 1979 FOREST OIL PERMIAN CORP. 

ECOS Corporation CONOCOPHILLIPS 

Edson Petroleum Co. 1970 

Edward P. Bass 


Edwards & Leach Oil Co. 1984 SANDRIDGE ENERGY, INC. 

Edwin L. & Berry R. Cox COX OIL & GAS INC. 

EEX Corp. 

EGRET ENERGY CORP. 

NEWFIELD EXPLORATION GULF COAST INC 

El Can Petroleum Company CONOCOPHILLIPS 

El Paso Company 

EL PASO E&P CO., LP 

CONOCOPHILLIPS (through Burlington Resources) 

El Paso Exploration Co. 1985 CONOCOPHILLIPS 

El Paso Frontera Corporation CONOCOPHILLIPS 

El Paso Gas Marketing Co. CONOCOPHILLIPS 

El Paso Gas Transportation Company CONOCOPHILLIPS 

El Paso Hydrocarbons Co. CONOCOPHILLIPS 

El Paso Hydorcarbons Gas Processing Co. CONOCOPHILLIPS


El Paso Hydrocarbons Pipeline Co. CONOCOPHILLIPS 

El Paso Hydrocarbons Service Co. CONOCOPHILLIPS 

El Paso Hydrocarbons Transportation Co. CONOCOPHILLIPS 

El Paso Natural Gas Clearinghouse Co. CONOCOPHILLIPS 

El Paso Natural Gas Company CONOCOPHILLIPS 

El Paso Production Company CONOCOPHILLIPS 

El Paso Production Oil & Gas USA, LP EL PASO E&P COMPANY, LP 

El Paso Products Company CONOCOPHILLIPS 

El Paso Storage Company CONOCOPHILLIPS 

El Rey Petroleum, Inc. JOHN P. MCHAUGHTON 

El Toro Exploration ROLAND LIBERDA 

Eland Energy, Inc. SUNDOWN ENERGY INC. 

Eldorado Refining Company 1968 AMERICAN PETROFINA PIPELINE CO. 

Elf Acquitaine Inc. TOTAL E&P USA INC 

Elf Exploration, Inc. TOTAL E&P USA INC 

Elk Basin Petroleum Co. 1928 CONOCOPHILLIPS 

Elk River Resources SUNCO PARTNERS MKTG & TERMINALS LP 

Elysium Energy, LLC NOBLE ENERGY, INC 

EMCOR PETROLEUM CO. 

Emejota Engineering Corporation TOTAL E&P USA INC 

Empire Energy 1980 BP AMERICA 

Empire Oil Company OCCIDENTAL OIL & GAS CORPORATION 

Empire Southern Production Co. ANDREWS PRODUCTION CO. 

ENCANA CORP. 

ENCANA ENERGY HOLDINGS, INC. 

ENCANA ENERGY RESOURCES, INC. 

ENCANA ENERGY SERVICES 

ENCANA GAS STORAGE INC. 

ENCANA GATHERING SERVICES (USA) INC. 

ENCANA GULF OF MEXICO, INC 

ENCANA HERITAGE LANDS 

ENCANA INTERNATIONAL (USA), INC. 

ENCANA MARKETING (USA), INC. 

ENCANA MIDSTREAM, INC. 

ENCANA MIDSTREAM, LTD. 

ENCANA OIL & GAS (USA), INC. 

ENCANA OIL & GAS CO., LTD 

ENCANA OIL & GAS PARTNERSHIP 

ENCANA PIPELINES (USA), INC 

ENCANA PIPELINES, LTD 

ENCANA RESOURCES 

ENCANA WEST LTD. 

ENCINO ENERGY & DEVELOPMENT CORP. 

ENCORE OPERATING, LP 

ENDEAVOR NATURAL GAS, LP


ENERGEN RESOURCES 

Energen Resources MAQ, Inc. ENERGEN RESOURCES CORP. 

Energy Corp. of America, Inc. 

ENERGY DEVELOPMENT CORP. 

ENERGY DEVELOPMENT PARTNERS LTD. 

EQUITABLE PETROLEUM CORP. 

Energy Methods Corp. EMCOR PETROLEUM CO. 

Energy Oil & Gas Corp. 1978 

ENERGY OIL INC. 

OIL CITY PETROLEUM, INC. 

Energy Oil Inc. of Colorado SNYDER OIL PARTNERS 

Energy Reserves Group Inc. 1985 BHP PETROLEUM (AMERICAS) INC. 

Energy Resources Corp. 1984 * 

ENERGY SOURCES INC. 

RIO PETROLEUM INC. 

Enertec Corp. 

ENEX RESOURCES CORP. 


Enfield Energy 81-A DOMINION EXPL & PROD INC. 

Enfield Energy 84-A 

ENGELKE 


Enhanced Energy Resources ANADARKO E&P COMPANY, LP 

Enopco, Inc. 1989 UMC PETROLEUM CORP. 

Enpal, Inc. 1989 UMC PETROLEUM CORP. 

EnRe, LP (Texas Properties) J-W OPERATING CO. 

Enron Corp., E&P Division EOG RESOURCES, INC. 

Enron Exploration Company EOG RESOURCES, INC. 

Enron Oil & Gas Co. EOG RESOURCES, INC. 

Enron Oil & Gas Marketing, Inc. EOG RESOURCES, INC. 

Enron Producing Company EOG RESOURCES, INC. 

Enserch Corporation NEWFIELD EXPLORATION GULF COAST INC 

Enserch Energy, inc. NEWFIELD EXPLORATION GULF COAST INC 

Enserch Exploration, inc. NEWFIELD EXPLORATION GULF COAST INC 

Enserch Oil Company NEWFIELD EXPLORATION GULF COAST INC 

Enserch Sacroc, Inc. NEWFIELD EXPLORATION GULF COAST INC 

Ensign Oil Co. KERR-MCGEE CORP 

Ensource, Inc 1989 UMC PETROLEUM CORP. 

Enstar Petroleum Corp. 1985 UNIMAR CORP. 

Entech Gas Ventures ENCANA ENERGY 

Enterprises Energy Corp. 1986 BELDEN & BLAKE ENERGY CO. 

Enterprise Gas Co. 

ENTERPRISE RESOURCES INC. 

ENTERPRISE RESOURCES INC. 

Entex Energy Operations Ltd. 1987 UMC PETROLEUM CORP. 

Entex Petroleum Inc. 1987 


UMC PETROLEUM CORP. 

EOTT Company PLAINS ALL AMERICAN PIPELINE, LP 

EP Operating Ltd. Partnership NEWFIELD EXPLORATION GULF COAST INC 

EPX Co. CONOCOPHILLIPS 

Equatorial Energy, Inc. RESOLUTE ENERGY, INC.


Equitable Gas Co. 1985 EQUITABLE RESOURCES INC. 

EQUITABLE PETROLEUM CORP. 

EQUITBLE RESOURCES INC. 

EQUITY OIL CO. 

Equiva Trading Co. 

ESKEY INC. 

SHELL TRADING (U.S.) CO, 

Espero Energy SOUTHWEST ROYALTIES INC. 

Essex Exploration, Inc. 1983 see Dominion Exploration & Production Inc 

Ethyl Oil & Gas Corp. 1989 TREDEGAR OIL & GAS CORP. 

Ethyl Petroleum Corp. 1989 TREDEGAR PETROLEUM CORP. 

Ethyl Properties, Inc 1989 TREDEGAR PROPERTIES, INC. 

EuroTex Resources, Inc. 

EVERGREEN OPERATING CORP. 

KERRCO INC. 

Evergreen Resources, Inc. PIONEER NATURAL RESOURCES USA, INC. 

Excalibur Ventures Inc. 1987 BALBOA EXPLORATION CO. 

Exchange Oil & Gas Corp. 1985 TRANSCO EXPLORATION PARTNERS 

Exchange Oil & Gas Corp. 1986 * TOTAL E&P USA INC 

Exeter Exploration 1986 APACHE CORP. 

Exeter Exploration Co. MCN EXPLORATION 

Ex-Mission Ranches, Inc. CONOCOPHILLIPS 

Exploration Co. of Louisiana Inc. 1987 * 

EXXON MOBIL CORP. 

F.E. HARPER 

FINA OIL & CHEMICAL CO. 

F.K. Johnson ANADARKO PETROLEUM CORPORATION 

F.P. Kendall Oil Co. 1958 

F.T. JOHNSON, JR. 


F. W. Merrick, Inc. 1943 CONOCOPHILLIPS 

Fabco Oil Co., Inc. (Merger) IMPERIAL OIL COMPANY 

Fadsin Production, Inc. 1984 DEVON ENERGY 

Fair Oil Company 1975* TOTAL E&P USA INC 

Falcon Seaboard Inc. 1979 MAXUS ENERGY CORP. 

Fargo Oils Ltd. 

FARMERS OIL COMPANY 

CHEVRON CORP 

Farmer's Union Central Exchng, Inc 12/93 CENEX, INC. 

Farmland Industries, Inc. COFFEYVILLE RESOURCES, LLC 

FCD Oil Corp. 11/86 DOMINION EXPL & PROD INC. 

FEC offshore Inventory Company EOG RESOURCES, INC. 

Federated Energy 1985 

FEDERATED NATURAL RESOURCES CORP. 

FELL & WOLFE OIL CO. 

FEDERATED NAT RESOURCES CORP. 

Felmont Oil & Gas Co. 1990 TORCH OIL & GAS CO. 

FGL, Inc. 

FIDELITY OIL CO. 

SUNDOWN ENERGY, INC. 

Fifteen Oil Co. 1960 see Tenneco Inc 

Filon Exploration Co. 1979 see Dominion Exploration & Production Inc


Fina Exploration, Inc. 1989 TOTAL E&P USA INC 

Fina LaTerre, Inc. TOTAL E&P USA INC 

Fina Oil & Chemical Co. TOTAL E&P USA INC 

Fina Oil and Gas, Inc. 1988 TOTAL E&P USA INC 

Fina Supply, Inc. 1985 TOTAL E&P USA INC 

Fina, Inc. TOTAL E&P USA INC 

Finadel Exploration, Inc. 1987 TOTAL E&P USA INC 

Finadel Pipe Line Company 1984 TOTAL E&P USA INC 

Finadel, Incorperated 1982 TOTAL E&P USA INC 

Financial Technology Inc. 1975 TEXON ENERGY CORP. 

FINATERRE, INC. 

Fine Line Diversified Ventures, Inc. FINE LINE O&G TX (WY)(LA)(MULTI-STATE) L.P. 

Fin-Oil, Inc. 1988 

FIN-TEX PIPELINE COMPANY 

FIRST ENERGY CORP. 

TOTAL E&P USA INC 

First Mississippi Corp. FIRST ENERGY CORP. 

First Permian, LP ENERGEN RESOURCES CORP. 

FIVE STAR ROYALTY PARTNERS, LTD. managed by AVIVA 

Flag Oil Corp. 1970 KERR-MCGEE CORP 

Flag-Redfern Oil Co. 1988 KERR-MCGEE CORP 

Flagstone Petroleum Corp. MAP RESOURCES, INC. 

Florida Exploration Co. 1984 EOG RESOURCES, INC. 

Florida Gas Exploration Co. 1979 EOG RESOURCES, INC. 

Floyd Karsten CHEVRON CORP 

Fluor Oil & Gas Corp. PRIMARY FUELS, INC. 

FMP Operating Co. A Ltd. Partnership 1990 FREEPORT-MCMORAN OIL & GAS 

Fohs Oil Co. 1946 

FORCHALL OIL 

BP AMERICA 

Forest Oil Co., Inc. 1924 



Forest Oil Corp. 1974 * 

FOREST OIL PERMAIN CORP. 

SUNCO PARTNERS MKTG & TERMINALS LP 

Fountain Oil & Gas Inc. WICHITA RIVER OIL CO. 

Four Queens Petroleum Corp. FELL & WOLF OIL CO. 

FPCO Oil & Gas Co. 1987 FREEPORT-MCMORAN OIL & GAS 

Franco Petroleum Co. 1913 BP AMERICA 

Franco Western CONOCOPHILLIPS 

Franco Wyoming Oil 

FRANKEL OIL & GAS CO. 


Frankel Oil Co. FRANKEL OIL & GAS CO. 

Frankfort Oil Co. SUNCO PARTNERS MKTG & TERMINALS LP 

Frantz Corp. 1928 

FRAZIER 


Fred Olson Inc. VOLVO PETROLEUM, INC. 

Freedom Energy, Inc. SEDNA ENERGY, INC.


Freeport Oil Co. FREEPORT-MCMORAN INC. 

Freeport-McMoRan Energy Partners 1990 FREEPORT-MCMORAN OIL & GAS 

FREEPORT-MCMORAN OIL & GAS 

FREMONT ENERGY CORP. 

Frio Drilling Co. 1982 

FRIO EXPLORATION CO. 

FRIO EXPLORATION CO. 

Frontier Acquisition Corp. 

FRONTIER ENERGY CORP. 

FRONTIER OIL CORPORATION 

RATEX RESOURCES INC. 

Fuhrman Petroleum Corp. CONOCOPHILLIPS 

Fullerton Oil 1953 EXXON MOBIL CORP. 

Funk Exploration 1985 ANADARKO E&P COMPANY, LP 

Future Acquisition 1995, Ltd. PETROHAWK PROPERTIES, LP 

Future Energy Corp. PETROHAWK PROPERTIES, LP 

Future Petroleum Corp. PETROHAWK PROPERTIES, LP 

Future Resources 1981 BOGART OIL CO./LOUIS DREYFUS GAS 

G.O.C. Corp. 1984 DEVON ENERGY 

G.P. Livemore, Inc. 

G/O INTERNATIONAL, INC. 

GREAT WESTERN OIL 

Galaxy Oil Co. 1987* GLOBAL NATURAL RESOURCES CORP. 

Galena-Signal Oil Co. 1928 CHEVRON CORP 

Gamble-Daniel Operating Co. PARTNERS OIL CO. 

Garfield County Exploration CHEVRON CORP U.S.A. INC. 

Gas Anadarko, Ltd Successors, The AVEN GAS & OIL, INC. 

Gas Producing Enterprices, Inc. 

GASOLINE PRODUCTION CORP. 

BORDER EXPLORATION CO. 

GCO Minerals Company CHEVRON CORP. 

Gem Oil, Inc. see Dominion Exploration & Production Inc 

Gemini Corp. 1986 ANADARKO E&P COMPANY, LP 

General American Oil Co. 1983 CONOCOPHILLIPS 

General Atlantic Energy Corp. UMC PETROLEUM CORP. 

General Atlantic Gulf Coast Inc. UMC PETROLEUM CORP. 

General Atlantic Resources Inc. UMC PETROLEUM CORP. 

General Crude Oil Co. 1979 

GENERAL ENERGY OPERATIONS LTD. 

GENERAL ENERGY RESOURCES & TECHNOLOGY CORP. 

EXXON MOBIL CORPORATION 

General Hydrocarbons Inc. 1985 ENCANA ENERGY 

General LP Acquisition Inc. 1989 UMC PETROLEUM CORP. 

General Petroleum Corp. 1926 EXXON MOBIL CORP. 

General Producing Co. 1988 UMC PETROLEUM CORP. 

General Production Co., Inc. 1983 ZAPATA EXPLORATION CO. 

Genesis Petroleum Corp. 1986 * DEVON SFS OPERATING, INC. 

GeoDynamics Oil & Gas, Inc. 1984 DEVON ENERGY 

Geodyne Resources 1993 SAMSON PROD SERVICES COMPANY 

GeoResources Management Corp. 1984 DEVON ENERGY


George J. Greer Trustee 1957 see Dominion Exploration & Production Inc 

George M. Shanor 1969 F.T. JOHNSON, JR. 

George Mitchell & Associates DEVON ENERGY 

George R. Brown, Oil & Gas Div. HIGHLAND RESOURCES, INC. 

George Rodman Inc. 1984 CHAPMAN ENERGY INC. 

Gerber Energy International 1987 GOLD KING CONSOLIDATED, INC. 

Getty Oil Co. 1984 CHEVRON CORP. 

GHK CO. 

GHR Energy Corp. 1986 

GIBRALTAR EXPLORATION LTD. 

TRANSAMERICAN NATURAL GAS CORP. 

Gilcrease Oil Co. VENUS OIL CO. 

Gilliland Producting & Refining 1936 CONOCOPHILLIPS 

Gillring Oil Co. RANGE PROD. CO. 

Gillring Prod. Co. RANGE PROD. CO. 

GKM Inc. 1987 PETROMARK RESOURCES CO. 

Glacier Arizona Company CONOCOPHILLIPS 

Glacier Park Boulder Company CONOCOPHILLIPS 

Glacier Park Company CONOCOPHILLIPS 

Glacier Park Denver Company CONOCOPHILLIPS 

Glacier Park Gateway Company 

Glacier Park Kent Industrial Co. 


Glacier Park King Street Co. CONOCOPHILLIPS 

Glacier Park Liquidating Co. CONOCOPHILLIPS 

Glacier Park Naperville Co. CONOCOPHILLIPS 

Glacier Park Northwest CONOCOPHILLIPS 

Glacier Park Orillia Company 1 CONOCOPHILLIPS 

Glacier Park Riverpoint Company CONOCOPHILLIPS 

Glacier Park South Lander Co. CONOCOPHILLIPS 

Glacier Park Wayzata Co. CONOCOPHILLIPS 

Glacier Production Co. 1944 CHEVRON CORP 

Glen McCarthy 1957 * 

GLOBAL NATURAL RESOURCES CORP. 


Global Natural Resources Corp. of Maryland GLOBAL NATURAL RESOURCES CORP. 

Global Natural Resources Corp. of Texas GLOBAL NATURAL RESOURCES CORP. 

Global Nevada-Galaxy I Ltd. GLOBAL NATURAL RESOURCES CORP. 

Global Nevada-Galaxy, Inc. GLOBAL NATURAL RESOURCES CORP. 

Globe Oil & Refining Co. LARIO OIL & GAS CO. 

Glorieta Oil Co. KERR-MCGEE CORP 

Glover Hefner Kennedy Oil Co. 

GOLD KING CONSOLIDATED, INC. 

GHK CO. 

GoldKing Production Co. 1985 

GOLIAD OPERATING COMPANY 

DENOVO OIL & GAS CO. 

Goliad Partners, LP GOLIAD O&G TX (WY)(LA)(MULTI-STATE) L.P. 

Good Hope Refineries Inc. TRANSAMERICAN NATURAL GAS CORP. 

Gordon Exploration Co. GOLIAD OPERATING COMPANY


Gordon Street, Inc. 1969 NORTH AMERICAN ROYALTIES, INC. 

Gothic Energy Corp. CHESAPEAKE 

Grace Petroleum Corp. 1993 SAMSON PROD SERVICES COMPANY 

GRAHAM EXPLORATION 

GRAHAM RESOURCES INC. 

Graham Royalty Ltd. 11/93 DOMININ OKLA TEXAS EXPL & PROD, INC. 

Graham-McCormick Oil/Gas Ptnrshp 1988 * SNYDER OIL PARTNERS LP 

Grand Banks Corp. RANGE PROD. CO. 

Grand Isle Oil & Gas XTO ENERGY 

Granite Falls Rock, Inc. CONOCOPHILLIPS 

Graridge Crop. 1966 * TOTAL E&P USA INC 

Grayhill Exploration Co. 1986 

GREAT AMERICAN RESOURCES, INC. 

U.S. MINERALS EXPLORATION CO. 

Great Basins Petroleum Co. HESS CORPORATION 

Great Expectations Oil Co. 1984 BP AMERICA 

Great Lakes Energy Development, Inc. 

GREAT LAKES ENERGY PARTNERS LLC 


Great Plains Development 

GREAT RIVER OIL & GAS CORP. 


Great Western Exploration 

GREAT WESTERN OFFSHORE INC. 

GREAT WESTERN ONSHORE INC. 

Great Western Oil & Gas Inc. 1989 GREAT WESTERN OFFSHORE INC. 

Great Western Oil & Gas Inc. 1989 GREAT WESTERN ONSHORE INC. 

Greenwood Holdings Inc. 10/93 HEADINGTON INVESTMENTS, INC. 

Griffin Petroleum Corp. 1982 

GROVE OIL & GAS 

KAISER-FRANCIS OIL CO. 

GS Oil & Gas Co. 1985 see Dominion Exploration & Production Inc 

Guardian Oil Co. 1916 Shell Oil Co. 

Guardian Oil Co. 1983 * 

GULF CANADA RESOURCES LTD. 

PATRICK PETROLEUM CO, 

Gulf Coast Acquisition Properties SUNDOWN ENERGY INC. 

Gulf Energy & Minerals Co. CHEVRON CORP 

Gulf Energy Development Corp. 1988 

GULF EXPLORATION CONSULTING, INC. 

TEJAS GAS CORP. 

Gulf Oil Co. 1984 CHEVRON CORP. 

Gulf Oil Exploration & Production Co. CHEVRON CORP. 

Gulf States WESTERN 

Gulf States Production Company YUMA EXPL AND PROD CO., INC. 

Gulfstar Energy Inc. RANGE ENERGY CORP. 

Gulftex Oil Company (Merger) IMPERIAL OIL COMPANY 

Gunsmoke Enegy DABB ENERGY CO. 

GW Petroleum Inc. 1989 GREAT WESTERN ONSHORE INC. 

GWP Inc. 1989 GREAT WESTERN ONSHORE INC. 

GWR Operating Co. 1989 GREAT WESTERN ONSHORE INC. 

Gypsy Oil Co. CHEVRON CORP


H.B. Zachry GASOLINE PRODUCTION CORP. 

H. Conquat LONGHORN OIL & GAS CO. 

H.R. Smith WESTERN 

H.W. Bass & Sons, Inc. GOLIAD OIL & GAS CO. 

HADSON CORPORATION 

Hadson Gas Co. APACHE CORP. 

Hallwood Energy Co. CHEVRON CORP. 

Hallwood Operating Co. CHEVRON CORP. 

Hallwood Petroleum Inc. CHEVRON CORP. 

Hamilton Bros. Oil Co. BHP PETROLEUM (AMERICAS) INC. 

Hamilton Oil 1928 CONOCOPHILLIPS 

Hampton Operating Company HAMPTON RESOURCES CORP. 

Hampton Resources Corporation HAMPTON RESOURCES CORP. 

Hancock il & Gas 1958 CONOCOPHILLIPS 

Hanlon-Boyle Inc. 1962 

HANNA PETROLEUM CO. 


Hanover Management Co. HESS CORPORATION 

Hanover Pet Inc. 1987 Rocky Mtn Prop Only ENERGEN RESOURCES CORP. 

Harbour Gas & Oil Inc. 1988 

HARCOR ENERGY, INC. 

HarCor Exporation, Inc. (HCX) 1989 

HARDY OIL & GAS USA, INC. 

HARKEN ENERGY CORP. 


Harken Oil & Gas Inc. CABOT OIL & GAS CORP. 

Harkins & Company (Acq.) ANADARKO E&P COMPANY, LP 

Harp Ltd. 1986 TRITON MINERALS & ROYALTY, INC. 

Harper Oil Co. MCN EXPLORATION 

Harper Oil Co. 1986 APACHE CORP. 

Harris-Bianchi-Hewitt H-B-H EXPLORATION CO. 

Harrison J.S. ABERCROMBIE MINERAL CO. 

Hartex-Anadarko Permian Basin Partnership 

HASSIE HUNT EXPLORATION COMPANY 


Hastings Resources 1987 PETROHAWK PROPERTIES, LP 

Hathaway Co. PYRAMID OIL CO. 

Hawkins & Co. ANADARKO E&P COMPANY, LP 

Hawthorne Oil & Gas Corp. 1988 

H-B-H EXPLORATION CO. 

HCG ENERGY CORP. 

AMERICAN NATIONAL PETROLEUM CO. 

HCW Inc. 1985 NRM ENERGY LIMITED PARTNERSHIP 

HCW Oil & Gas Co. 

HEADINGTON INVESTMENTS, INC. 

NRM ENERGY LIMITED PARTNERSHIP 

Healdton Oil & Gas Co. 1929 EL PASO E&P COMPANY, LP 

HEC La Plata, LLC CHEVRON CORP 

HEC Peru, LLC CHEVRON CORP 

HEC Petroleum, Inc. CHEVRON CORP


Hef-Lin Energy L L & B COMPANIES 

Helmerick & Payne, Inc. CIMREX ENERGY CO. 

Helmick Oil Co. 1912 Shell Oil Co. 

Hemingway, Bartell & Associates BARTELL EXPLORATION 

Henderson Petroleum Corp. 1986 ZG ENERGY CORP. 

Henry Energy Corp. 1987 KIMCO ENERGY CORP. 

HEP OIL CO LTD 

HEP OPERATING PARTNERS, L.P. 

HEP Partners, LP CHEVRON CORP 

HEP Pure Acquisitions, LLC CHEVRON CORP 

HEP San Juan, LLC CHEVRON CORP 

Heritage Glacier Park Company CONOCOPHILLIPS 

Heritage Resources CO, LLC HIGHMOUNT EXPLORATION & PRODUCTION LLC 

Herman G. Kaiser KAISER-FRANCIS OIL CO. 

Hershy Oil Corp. (US Properties) 



Hess Oil & Chemical 1969 HESS CORPORATION 

Hexagon Oil & Gas, Inc. DABB ENERGY CO. 

Heyser & Heard EXXON MOBIL CORP. L.P. 

Hiawatha Oil & Gas Corp. 1987 * CASTLE ENERGY CORP. 

Hiawatha Oil Co., Inc. 1983 PLAINS RESOURCES, INC. 

Hickory Creek Oil Co. 1984 HANNA PETROLEUM CO. 

Hickory Timbers Oil LP XTO ENERGY INC. 

High Crest Oils, Inc. BP AMERICA 

High Plains Oil Corp. 1985 DEVON ENERGY 

Highland Energy Co. 

HIGHLAND RESOURCES, INC. 

CALPINE PRODUCER SER., LP 

HighMount Midwest Energy LLC LINN OPERATING, INC. 

HighMount Exploration and Production Michigan LLC LINN OPERATING, INC. 

Hightower Oil & Gas OLIX ENERGY 

Hilliard Oil & Gas Inc. 1985 GRAHAM RESOURCES INC. 

Hingeline-A1162Overthrust Oil/Gas, Inc. 1983 WHITING PETROLEUM CORP. 

HiPoint Petroleum Corp. 1981 GIBRALTAR EXPLORATION LTD. 

HLP Operating Co. 1986 HPC OPERATING CO. 

HMG Associates NATURAL RESOURCE MGMT CORP. 

HNG Fossil Fuels Co. 1983 EOG RESOURCES, INC. 

HNG Offshore Properties, Inc. EOG RESOURCES, INC. 

HNG Oil Co. 1985 EOG RESOURCES, INC. 

HNG/InterNorth Exploration Co. 1986 EOG RESOURCES, INC. 

HOC 1982 Rockies Oil Program see Dominion Exploration & Production Inc 

Hold Oil Corp. 1989 HCG ENERGY CORP. 

Holding Company, Ltd. GLOBAL NATURAL RESOURCES CORP. 

Holly Energy, Inc. 1984 EOG RESOURCES, INC. 

Homa Oil and Gas Company Inc. FOREST OIL PERMIAN CORP. 

Home Petroleum Corp. 1989 PRESIDIO OIL CO.


Home-Stake O&G Co. ENCORE OPERATING, LP 

Home-Stake Royalty Corp. ENCORE OPERATING, LP 

Hondo Oil & Gas Co. 1963 BP AMERICA 

Hondo Oil & Gas Co. 1992 DEVON ENERGY 

Honolulu Oil Corp. 1961 * BP AMERICA 

Hoover & Bracken Energies, Inc. DIVERSIFIED ENERGIES INC. 

Houston Drilling & Energy Corp. 1977 HOUSTON OIL & ENERGIES INC. 

Houston Natural Gas Production Co. 1972 EOG RESOURCES, INC. 

HOUSTON OIL & ENERGY, INC. 

Houston Oil & Minerals 1981 DEVON ENERGY 

Houston Oil Co. 1956 BP AMERICA 

Houston Oil Fields Co. 1987 * PLAINS RESOURCES, INC. 

Houston Oil Royalty Trust DEVON ENERGY 

Houston Oil Trust DEVON ENERGY 

Howell Petroleum Co. 

HPC OPERATING CO. 


HPC, INC. See PRESDIO OIL CO. 

HS Resources Inc. - 2001 KERR-MCGEE ROCKY MOUNTAIN CORP. 

HS Royalty Ltd ENCORE OPERATING, LP 

Hudson Gas & Oil EXXON MOBIL CORP. LP 

Hudson Oil Co. BP AMERICA 

Hudson's Bay Oil & Gas Co. DOME PETROLEUM 

Huffco Gas & Oil Inc. 1988 TOTAL E&P USA INC 

Huffco Oil Programs Inc. 1988 TOTAL E&P USA INC 

Huffco Petroleum Corp. 1988 TOTAL E&P USA INC 

Huffington Exploration Corp. 1988 TOTAL E&P USA INC 

Hughes Eastern Producing, Inc. UNION OIL CO. OF CALIFORNIA 

Hughes Oil & Gas Inc. 1989 TEXAS MERIDIAN RESOURCES LTD 

Hugoton Capitol Limited Partnership 

HUGOTON ENERGY CORPORATION 

PIONEER NATURAL RESOURCES USA, INC. 

Hugoton Production Co. 1969 PIONEER NATURAL RESOURCES USA, INC. 

Huisache Operating Co. 1977 PENINSULA RESOURCES CORP. 

Humble Oil & Refining Co. 1972 EXXON MOBIL CORP L.P. 

Humble Oil Co. 1917 EXXON MOBIL CORP L.P. 

Humphreys Corp. 1931 BP AMERICA 

Hunnicutt & Camp Co. 1981 

HUNT OIL COMPANY 

see Tenneco Inc 

Hunt Petroleum (AEC) Inc XTO ENERGY INC. 

Hunt Petroleum Corporation 

HUNTER RESOURCES, INC. 


Huntington Beach Company CHEVRON U.S.A. INC. 

Husky Oil Co. 1984 

HUSKY OIL LTD 

HYDRO GULF OF MEXICO, LLC 

MARATHON OIL COMPANY 

Hytech Energy Corp. 1979 ANADARKO E&P COMPANY, LP


I.W. Lovelady 1978 * DEVON ENERGY 

Ibex Inc. BRECKENRIDGE OPERATING CO. 

IEC Oil & Gas Corp. 1987 HEADINGTON INVESTMENTS, INC. 

Ike Lovelady, Inc. 1986 PETROHAWK RESOURCES CO. 

ILEX OIL CORP. 

Illinois Industries Inc. 1985 TRANS ATLANTIC RESOURCES CORP. 

Imperial American Energy 1977 * FREEPORT-MCMORAN ENERGY PTNRS 

Imperial Oil Company of California IMPERIAL OIL COMPANY 

Imperial Petroleum MOSS PETROLEUM 

Incomare Resources, Inc. KERRCO INC. 

Independent Exploartion Co. 1952 TESORO PETROLEUM CORP. 

Independent Oil & Gas Co. 1927 CONOCOPHILLIPS 

Independent Resources, Inc. ACCESS ENERGY CORP 

Indian Territory Illuminating Oil Co. OCCIDENTAL OIL & GAS CORPORATION 

Indian Valley Oil Co. (Merger) IMPERIAL OIL COMPANY 

Indian Wells Oil Co. 1979 * ANADARKO E&P COMPANY, LP OIL & GAS CO. 

Indian Wells Oil Co. 1987 PARKER & PARSLEY PETROLEUM CO. 

Industrial Gas Supply Corp. ENTERPRISE RESOURCES INC. 

Inexco Oil Company CONOCOPHILLIPS 

Ingram Oil & Refining Co. 1961 MURPHY OIL CORP. 

Integral Petroleum Corp. 1976 BUTTES OIL & GAS CO. 

Integrated Energy, Inc. MCO RESOURCES CORP. 

Inter-American Petroleum Corp. 1978 GRAHAM RESOURCES INC. 

InterCoast Oil & Gas Co. KCS RESOURCES, INC. 

Intercoastal Operating Co. IOC EXPLORATION, INC. 

International Min. & Chemical Corp. 1986 BASF CORP/WINTERSHALL CORP. 

International Nuclear Corp. INEXCO OIL CO. 

International Paper Co. CHEVRON MIDCONTINENT, LP 

International Paper Gas Pipeline Co. CHEVRON MIDCONTINENT, LP 

International Petr. Resources Corp. 1972 PACIFIC ENERPRISES OIL CO. (USA) 

InterNorth Inc., E&P Division EOG RESOURCES, INC. 

Intex Oil Co. 1968 TESORO PETROLEUM CORP. 

Intratex Gas Co. EOG RESOURCES, INC. 

Inveco Holding, Inc. KERRCO INC. 

Investors Royalty Co., Inc. 1973 

IOC EXPLORATION, INC. 

PACIFIC ENERPRISES OIL CO. (USA) 

Iowa/Illinois Gas & Electric Co. MID-AMERICA ENERGY CO. 

IP Petroleum Co., Inc. 

IRION MOUNTAIN OIL CO. 

CHEVRON MIDCONTINENT, LP 

Island Oil & Exploration Co., Inc. PENROSE PRODUCTION 

ITR Petroleum, Inc. 1987 GENERAL ATLANTIC ENERGY CORP. 

IWG Co 5 

J M HUBER CORP. 

KCS RESOURCES, INC. 

J. C. Trahan Drilling Co. 

J. D. WRATHER, JR. 

TEXAS INTERNATIONAL PETROLEUM


J.E. Crosbie, Inc. 1951 KERR-MCGEE CORP 

J.M. Guffey Petroleum Co. 1907 CHEVRON 

J.P. Owen 1963 CONOCOPHILLIPS 

J.R. Parten Estate FARMERS OIL COMPANY 

J.S. ABERCROMBIE MINERAL CO. 

Jade Resources, Inc. 1991 CONSOLIDATED OIL & GAS, INC. 

Jaeger Energy Corp. 1984 U.S. RESOURCES INC. 

Jay Oil Company FOREST OIL PERMIAN CORP. 

Jefferson Lake Sulphur Co. OCCIDENTAL OIL & GAS CORPORATION 

JEM Petroleum Corp. 1985 PATRICK PETROLEUM CO, 

Jeremiah Corp. OCTOBER OIL CO. 

Jergins Oil Co. EXXON MOBIL CORP. 

Jerry Chambers Exploration Co. KERR-MCGEE CORP 

Jerry Chambers Exploration Co. AXEM RESOURCES, INC. 

Jet Oil Co. SOUTHWEST ROYALTIES INC. US OIL CO. 

JMG Oil & Gas 

J-O'B OPERATING CO. 

CHAPARRAL ENERGY INC. 

Jocelyn-Varn Oil Co. VARN OIL CO. 

John A. Bell, Jr. 1917 BP AMERICA 

John A. Taylor Co. 1983 PLAINS RESOURCES, INC. 

John G. Hammons Inc. 

JOHN P. MCNAUGHTON 

JGM COMPANY 

Johnson Oil & Refining Co. 1956 CONOCOPHILLIPS 

Johnson Oil & Gas Co. CHEVRON CORP. 

Johnston Ranch Royalty Co. HESS CORPORATION 

Jonell Gas MCO RESOURCES, INC. 

Jones & Pellow Oil Co. 1987 * BOGERT OIL CO./LOUIS DREYFUS GAS 

Jones-O'Brian J-O'B OPERATING CO. 

JOSEPH B. SINGER OIL COMPANY managed by AVIVA 

JR Operating Inc. GREAT LAKES ENERGY PARTNERS LLC 

Julian Potter Estate 1969 ILEX OIL CORP. 

Juniper Oil & Gas 1967 

JUPITER CORP. 

J-W OPERATING CO. 

DAMSON OIL CORP. 

K. Jain & Associates VENEX CORP. 

K.R.M. Exploration, Inc. 1973 



Kaiser Energy Inc. 1987 PRESIDIO OIL CO. 

Kaiser Oil (U.S.) Lrd. 1984 


PLAINS PETROLEUM CO. 

Kalispell Glacier Park Company 

KANATA EXPLORATION OF WESTERN CANADA 


Kaneb Oil & Gas Co. ANADARKO E&P COMPANY, LP 

Keneb Operating Co., Ltd. 1988 * ANADARKO E&P COMPANY, LP 

Kanex, Ltd. KERRCO INC.


Kansas-Nebraska Natural Gas 1983 PLAINS PETROLEUM CO. 

Kathol Petroleum, Inc. ANADARKO E&P COMPANY, LP 

Katz Oil DALEN RESOURCES OIL & GAS CO. 

Kaycee Exploration Ltd. 1974 PACIFIC ENERPRICES OIL CO. (USA) 

KCS Medallion Resources, Inc. KCS RESOURCES, INC. 

KCS Michigan Resources, Inc. KCS RESOURCES, INC. 

KCS Mountain Resources, Inc. KCS RESOURCES, INC. 

KCS RESOURCES, INC. 

Keaton Oil & Gas Co. 1929 ASHLAND OIL CO. 

Keba Oil & Gas Co. 1983 WHITING PETROLEUM CORP. 

KEC Acquisition Corp. see Dominion Exploration & Production Inc 

Kee Exploration Inc. 1986 WICHITA RIVER OIL CO. 

Keith Collins Petroleum Corp. 1985 GOLD KING CONSOLIDATED, INC. 

Keith Oil Co. c1920 BP AMERICA 

Kelley Oil Corp SAMSON 

Kellogg Oil Co. 1915 BP AMERICA 

Kelso Fund 81 Trust GLOBAL NATURAL RESOURCES CORP. 

Kelso Funs 83-A Trust GLOBAL NATURAL RESOURCES CORP. 

Kelso-Lambert Royalty Co., Inc. GLOBAL NATURAL RESOURCES CORP. 

Kelso-Lambert Royalty Fund 1981 GLOBAL NATURAL RESOURCES CORP. 

Kelso-Lambert Royalty Pool 1983-A GLOBAL NATURAL RESOURCES CORP. 

Kenai Oil & Gas Inc. 1984 GRAHAM RESOURCES INC. 

Kennedy Mitchel, Inc. 1986 HARKEN OIL & GAS INC. 

Keoghan-Hurst Drilling Co. 1928 CONOCOPHILLIPS 

Kerlyn Oil Co. 1946 KERR-MCGEE CORP. 

Kern County Land Co. 1967 see Tenneco Inc 

Kerr, Jain & Associates 

KERRCO INC. 

VENEX CORP. 

Kerrco, Ltd. 

KERR-MCGEE CORP. 

KERRCO INC. 

Kerr-McGee North Am. Onshore Corp.-1996 

KERR-MCGEE OIL & GAS ONSHORE, LP 

DEVON ENERGY CORP. 

Kerr-McGee Oil Industries 1965 KERR-MCGEE CORP. 

Kerr-McGee Refining Corporation CALUMET LUBRICANTS 

Kerr-McGee Refining Coporation (Oklahoma Properties) 

KERR-MCGEE ROCKY MOUNTAIN CORP. 

NATURAL GAS CLEARINGSHOUSE 

Kewanee Industries 1977 CHEVRON 

Key Oil Company 1976 

KEY PRODUCTION COMPANY 


Keystone, Inc. 

KFOC, INC. 

KIMCO ENERGY CORP. 

KEYSTONE O&G TX (WY)(LA)(MULTI-STATE) LP 

Kimmerer Oil CHEVRON 

King Ranch Oil & Gas, Inc. 1988 * PRESIDIO OIL CO. 

King Ranch, Inc. ST. MARY LAND & EXPLORATION, INC.


King Resources Co. 1978 TEXAS INTERNATIONAL PETROLEUM 

Kingbell Oil Co. 1912 Shell Oil Co. 

King-Stevenson Gas & Oil Co. 1965 TEXAS INTERNATIONAL PETROLEUM 

Kingwood Oil Co. 1971 ANADARKO E&P COMPANY, LP 

Kirby Exploration Company of Texas see Dominion Exploration & Production Inc 

Kirby Fletcher Stamford see Dominion Exploration & Production Inc 

Kirby Oil & Gas Co. 1957 see Dominion Exploration & Production Inc 

Kirby Petroleum Co. 1943 * CONOCOPHILLIPS 

Kirby Petroleum Co. 1988 * see Dominion Exploration & Production Inc 

KISKA OIL CO. 

KLS Holdings KERRCO INC. 

KN Energy Inc. 1985 PLAINS PETROLEUM CO. 

Koch Hydrocarbons ONEOK 

Koch Oil Co. (50%) FLINT HILLS REOURCES LP 

Koch Oil Co. (50%) KOCH INDUSTRIES INC. 

Koch, Fred C. KOCH EXPLORATION COMPANY, LLC 

Koch, Mary R. KOCH EXPLORATION COMPANY, LLC 

Koch Development Corporation KOCH EXPLORATION COMPANY, LLC 

KP Exploration Inc. 1993 UMC PETROLEUM CORP. 

KSA Industries 1974 ADAMS RESOURCES & ENERGY, INC. 

K-T Oil Corporation 1982 TOTAL E&P USA INC 

L & G Oil & Royalty Co. 

L L & B COMPANIES 


L L & B Resources L L & B COMPANIES 

L. G. Williams Oil Co. 1984 MATRIX ENERGY INC. 

L. Noble NOBLE ENERGY, INC. OIL CORP. 

LaClare Petroleum Inc. 1985 THE MERIDIAN RESOURCES CORPORATION 

Ladd Petroleum Corp. (Merger) ANADARKO E&P COMPANY, LP 

LAE Energy, Inc. PETROHAWK RESOURCES CO. 

LaGloria Oil & Gas 1957 NOBLE ENERGY, INC. 

Lagorce Oil Co. 1969 APACHE CORP. 

Laguna Petroleum OXY USA WTP 

Laird Oil & Gas, Inc. 1972 WAINOCO OIL CORP. 

Lambert Exploration, Inc. GLOBAL NATURAL RESOURCES CORP. 

Lamson & Bennett 

LAMSON/ONSHORE PETROLEUM CORP. 

LAMSON/ONSHORE PETROLEUM CORP. 

Landa Oil Co. 

LANTERN PETROLEUM CORPORATION 


LaPlata Associates, LLC CHEVRON MIDCONTINENT, LP 

Larcon Oil Co. HESS CORPORATION 

Largo Drilling & Exploration Corp. 1972 TRANSCONTINENTAL OIL CO. 

Lariat Petroleum 

LARIO OIL & GAS CO. 

NEWFIELD EXPL MID-CONTINENT INC. 

Laser Oil Co. 

LASMO ENERGY CORP. 

KERR-MCGEE CORP


LATERRE DEVELOPMENT CORP. 

Latigo Petroleum., Inc. (wholly owned subsidiary) PLAINS EXPLORATION & PRODUCTION COMPANY 

Laurel Royalty Co. 1972 

LAVINO OIL & GAS CO. 


Lawton Oil EL PASO E&P CO., LP 

Le Norman Loco, Inc NOBLE ENERGY, INC 

Le Norman Partners, LLC NOBLE ENERGY, INC 

Leader Development Corp. 1987 CLINTON GAS SYSTEMS, INC. 

Lear Petroleum Corp. 1988 DALEN RESOURCES OIL & GAS CO. 

Lear Petroleum Prtnrs Operating Co. 1986 ENERGEN RESOURCES CORP. 

Leben Oil Corp. KAISER-FRANCIS OIL CO. 

LeCuno Oil Corp. HESS CORPORATION 

Lee M. Bass, Inc. LMBI O&G TX (WY)(LA)(MULTI-STATE) L.P. 

Leede Exploration Co. 1978 CONOCOPHILLIPS 

Leidy Prospecting Co. 1953 

LENORMAN ENERGY CORP. 

CHEVRON 

Leonard Oil see Tenneco Inc 

Lewcinda Oil & Gas Co. 1917 CONOCOPHILLIPS 

Lewis Production CHEVRON 

Liberty North America, Inc. 1988 PRESIDIO OIL CO. 

Liberty Oil & Gas Corp. 1988 * PRESIDIO OIL CO. 

Limark Corporation NORTHSTAR OPERATING CO. 

Limited Oil Co. 1936 EXXON MOBIL CORP. 

Limpia Royalty 1962 CHEVRON 

Lindenmuth and Associates L L & B COMPANIES 

Lindy Petroleum Co. 1982 

LINGEN OIL & GAS INC. 

PATHFINDER PETROLEUM CORP. 

Link Energy, LLC PLAINS ALL AMERICAN PIPELINE, LP 

Lion Oil Co. 1955 LION OIL TRADING & TRANSPORTATION, INC. 

Lion Oil Company LION OIL TRADING & TRANSPORTATION, INC. 

Lion Oil Refining Company 1945 

LION OIL TRADING & TRANSPORTATION, INC. 


Lipan Oil Co. ENCANA ENERGY 

Logan & Barton CHARLIE BARTON 

Lomak Energy Co. RANGE ENERGY I, INC. 

Lomak Energy Services Co. RANGE ENERGY SERVICES CO 

Lomak Gas Co. RANGE GAS CO 

Lomak Gathering & Pros. Co. RANGE GATHERING & PROS. CO 

Lomak Offshore LP RANGE OFFSHORE LP 

Lomak Operating Co. GREAT LAKES ENERGY PARTNERS LLC 

Lomak Petro. (Ohio) Inc. GREAT LAKES ENERGY PARTNERS LLC 

Lomak Petroleum Inc. RANGE RESOURCES CORP. 

Lomak Pipeline Systems LP RANGE PIPELINE SYSTEMS LP 

Lomak Production Co. RANGE PRODUCTION CO. 

Lomak Production I LP RANGE PRODUCTION I LP


Lomak Resources Co. GREAT LAKES ENERGY PARTNERS LLC 

Lomak Resources LLC RANGE RESOURCES LLC 

Lomita Gasoline Company CHEVRON U.S.A. INC. 

Lone Star Production Co. NEWFIELD EXPLORATION GULF COAST, INC. 

Long-Bell Petroleum Company, Inc. CHEVRON MIDCONTINENT, LP 

Longhorn Oil & Gas WAGNER & BROWN, LTD. 

Lorena Oil Co. CHEVRON 

Los Angeles Oil & Refining Co. 1915 BP AMERICA 

Los Nietos Co. 1959 CHEVRON CORP. 

Lou-Can Oil & Gas, Inc. FRONTIER ENERGY CORP. 

Louis Dreyfus Natural Gas Corp. DOMINION EXPLOR. & PROD., INC. 

Louisiana Land & Exploration Co CONOCOPHILLIPS 

Louisiana Minerals, Ltd. PETER PAUL PETROLEUM CO., GEN. PTNR 

Louisiana-Hunt Petroleum HUNT PETROLEUM CORPORATION 

Love Petroleum Co. SOUTHWEST ROYALTIES, INC. 

LPI Acquisition Inc. RANGE ACQUISITION INC. 

LPI Operating Co RRC OPERATING CO 

LUCK PETROLEUM CORP. 

LVO Corp. 1974 ANADARKO E&P COMPANY, LP 

M & M Production 

M.R. YOUNG 


MacDonald Oil Corp. 1975 DEVON ENERGY 

Madison Pipe Line Company FARMERS OIL COMPANY 

Madiion Resources 1985 

MAGIC CIRCLE ENERGY CORP. 

DEVON ENERGY 

Magic Circle Oil Co. 1980 MAGIC CIRCLE ENERGY CORP. 

Magna Oil Corp. HESS CORPORATION 

Magness Petroleum Co. SAMSON PROD SERVICES COMPANY 

Magnolia Petroleum Co. 1959 EXXON MOBIL CORP. 

Magnum-Hunter Resources, Inc. CIMAREX ENERGY CO 

Maguire Energy Company 

MAGUIRE OIL COMPANY 

MAGUIRE OIL COMPANY 

Mainland Oil & Minerals, Inc. 

MAINLAND RESOURCES, INC. 

MAINLAND RESOURCES, INC. 

Majestic Resources, Inc. 1981 ALTA ENERGY CORP. 

Malco Refining BP AMERICA 

Malka Production Co. 1978 CONOCOPHILLIPS 

Mallon Oil Co. BLACK HILLS GAS RESOURCES, INC. 

MAPCO, Inc. 1985 see Dominion Exploration & Production Inc 

Maplewood Glacier Park Company CONOCOPHILLIPS 

MAPP Exploration Inc. 1983 BELCOR, INC. 

Marathon Oil Co. 1982 



Marathon Petroleum Co. 

MARINE PROPERTIES, INC. 

MARATHON OIL COMPANY


MARINER ENERGY, INC 

Marion Corp. 1987 * DEVON SFS OPERATING, INC. 

Mark Resources Corp. RANGE RESOURCES CORP. 

Marland Oil Co. 1929 CONOCOPHILLIPS 

Marline Petroleum Corp. 1985 DEVON ENERGY 

Marrs McLean 1931 * 

MARTIN EXPLORATION CORP. 

BP AMERICA 

Maryland Oil Corp. see Tenneco Inc 

Masai Minerals, Ltd. HESS CORPORATION 

Masters Energy Corp. 1986 HARKEN OIL & GAS INC. 

Matador Petroleum Co. 1922 Shell Oil Co. 

Matador Petroleum Corp. 

MATADOR RESOURCES CO. 

ENCANA OIL & GAS USA, INC. 

Matagorda Bay Pipeline, Inc. see Dominion Exploration & Production Inc 

Matagorda Drilling & Expl. Co. 1982 CONVEST ENERGY CORP. 

Matagorda Island Development Corp. 1992 ANADARKO PETROLEUM CORPORATION 

Matagorda Island Exploration Corp. 1992 ANADARKO PETROLEUM CORPORATION 

Matagorda Pipeline Partnership 

MATRIX ENERGY INC. 


Maverick Consulting Co. KFOC, INC. 

Maxus Energy Company MIDGARD ENERGY COMPANY 

Maxus Exploration Company MIDGARD ENERGY COMPANY 

May Energy Partners 1987 QUINOCO CO. 

May Petroleum Inc. 1987 * ENERGY DEVELOPMENT PARTNERS LTD. 

Mayfair Minerals, Inc. see Tenneco Inc 

Maynard Oil Co. FOREST OIL CORP. 

Maynard Oil Co. - Southern Oklahoma Properties LAMAMCO DRILLING CO. 

Mayo FRAZIER 

Maze Energy Corporation see Dominion Exploration & Production Inc 

Maze Exploration, Inc. see Dominion Exploration & Production Inc 

Maze-A 1983 Limited see Dominion Exploration & Production Inc 

MB Operating Co Inc. GREAT LAKES ENERGY PARTNERS LLC 

McAlester Fuel Co. 1983 UNIMAR CORP. 

McClure Oil 1960 MARATHON OIL COMPANY 

McColl-Frontenac Oil Co., Ltd. 1948 CHEVRON 

McCollum Exploration Co. WESTERN GEOPHYSICAL 

MCCRARY, AN OKLAHOMA LP mangaged by AVIVA 

McCulloch Energy, Inc. HARKEN ENERGY COMPANY 

McCulloch Oil & Gas Corp. UMC PETROLEUM CORP. 

McCulloch Oil Corp. of Texas 

MCFARLAND ENERGY INC. 


McFarlane Oil Co., Inc. GLOBAL NATURAL RESOURCES CORP. 

McGowen Exploration Co. 1984 PLAINS PETROLEUM CO. 

McGrath & Smith See Smith & McGrath 

McKee Petroleum Corp. 1976 EXXON MOBIL CORP.


McMan Oil & Gas Co. 1931 BP AMERICA 

McMoRan Oil & Gas Co. 1981 FREEPORT-MCMORAN INC. 

MCN Energy Enterprises SUNDOWN ENERGY INC. 

MCN EXPLORATION 

MCN Investment Corp SUNDOWN ENERGY INC. 

MCN Oil & Gas Co. SUNDOWN ENERGY INC. 

MCNIC Enhanced Prod SUNDOWN ENERGY INC. 

MCNIC Midcontinent Properties SUNDOWN ENERGY INC. 

MCNIC Oil & Gas Midcontinent, Inc. SUNDOWN ENERGY INC. 

MCNIC Oil & Gas Properties SUNDOWN ENERGY INC. 

MCNIC Oil and Gas Company SUNDOWN ENERGY INC. 

MCO Resources, Inc. UMC PETROLEUM CORP. 

MCOR Oil & Gas Corp. 1980 UMC PETROLEUM CORP. 

McPet 1971 APACHE CORP. 

MCR Oil Corp. of Texas 1980 UMC PETROLEUM CORP. 

McRae Consolidated Oil & Gas, Inc. 1983 DALEN RESOURCES OIL & GAS CO. 

McRae Oil & Gas CHEVRON 

MDF Technology, Inc. CONOCOPHILLIPS 

MDU Resources Group Inc. FIDELITY OIL CO. 

Meadowview, Inc. see Dominion Exploration & Production Inc 

Medallion 

MEDALLION CALIFORNIA PROPERTIES 


Medallion Gas Services, Inc. KCS RESOURCES, INC. 

Medallion Production Co. KCS RESOURCES, INC. 

Medicine Bow Operating Co. EL PASO E&P COMPANY, LP 

Mendota Oil Co. 1969 APACHE CORP. 

Merger Corporation 1948 Henderson Clay Products 

Meridian Aggregates Company CONOCOPHILLIPS 

Meridian Gold Company CONOCOPHILLIPS 

Meridian Industrial Minerals Co. CONOCOPHILLIPS 

Meridian Minerals Company CONOCOPHILLIPS 

Meridian Oil Co CONOCOPHILLIPS 

Meridian Oil Frontera CONOCOPHILLIPS 

Meridian Oil Gathering Inc. CONOCOPHILLIPS 

Meridian Oil Inc. (Wisconsin) CONOCOPHILLIPS 

Meridian Oil Marketing CONOCOPHILLIPS 

Meridian Oil Offshore Acquisition Co. CONOCOPHILLIPS 

Meridian Oil Offshore Inc. CONOCOPHILLIPS 

Meridian Oil Pipeline Inc. CONOCOPHILLIPS 

Meridian Oil Production Inc. CONOCOPHILLIPS 

Meridian Oil Production Inc. (Wisconsin) CONOCOPHILLIPS 

Meridian Oil Services Inc. CONOCOPHILLIPS 

Meridian Oil Storage CONOCOPHILLIPS 

Meridian Oil Trading Inc. CONOCOPHILLIPS 

Meridian Oil Transportation Inc. CONOCOPHILLIPS


Meridian Petroleum Holding Inc. CONOCOPHILLIPS 

Meridian Power Inc. CONOCOPHILLIPS 

Merlin Petroleum Co. 1989 * GULF EXPL CONSULTANTS INC. 

Merrico Acquisition 1987-NYL 

Merrit Oil 1928 CONOCOPHILLIPS 

Mesa Limited Partnership * PIONEER NATURAL RESOURCES USA, INC. 

Mesa Operating Co. PIONEER NATURAL RESOURCES USA, INC. 

Mesa Petroleum Co. PIONEER NATURAL RESOURCES USA, INC. 

MGF Drilling Co. KAISER-FRANCIS OIL CO. 

MGF Mansfield, Inc. KAISER-FRANCIS OIL CO. 

MGF Oil Corp. 1/94 KAISER-FRANCIS OIL CO. 

MGF Production Co. KAISER-FRANCIS OIL CO. 

MGF Supply Co. KAISER-FRANCIS OIL CO. 

MGS Development Co. SUNDOWN ENERGY INC. 

Mid Louisiana Gas Company 1987 

MID-AMERICA ENERGY CO. 

BASF CORP/WINTERSHALL ENERGY 

Mid-American Investment Corporation see Dominion Exploration & Production Inc 

Mid-American Petroleum, Inc 1986 HUNTER RESOURCES, INC. 

MidCon Exploration Co.-Gulf Coast 1986 DAVIS OIL CO. (DAVIS PETRO CORP.) 

MidCon Exploration Co.-Gulf Coast 1986 APACHE CORP. 

Midcontinent Acquisition Properties SUNDOWN ENERGY INC. 

Mid-Continent Petroleum Corp. 1955 SUNOCO PARTNERS MKTG & TERMINALS LP 

Middle Bay Oil Co., Inc. PXP GULF COAST, INC. 

Middle States Petroleum 1958 

MIDGARD ENERGY COMPANY 


Mid-Gulf Drilling Corp. RANGE ENERGY CORP. 

Midhurst Oil Corp. ASHLAND OIL CO. 

Mid-Kansas Oil & Gas Co. 1916 MARATHON PETROLEUM CO. 

Midland Oil Company 1961 CONSOLIDATED OIL & GAS, INC. 

Midlands Energy Co. 1984 FREEPORT-MCMORAN INC. 

Mid-Tex Oil & Gas GROVE OIL & GAS 

Midway Oil Co. 1905 DEVON SFS OPERATING, INC. 

Midway Six Oil Co. 1910 BP AMERICA 

Midwest Exploration Co. 1930 BP AMERICA 

Midwest Oil Co. 1974 BP AMERICA 

Midwest Production Co. 1958 see Dominion Exploration & Production Inc 

Midwest Refining Co. 1921 BP AMERICA 

Midwest Resources, Inc. 

MILAGRO EXPLORATION 

MID-AMERICA ENERGY CO. 

Miles Petroleum Inc OXFORD CONSOLIDATED, INC. 

Milestone Petroleum, Inc. 1985 CONOCOPHILLIPS 

Millane, Inc. (Assets) IMPERIAL OIL COMPANY OF CALIFORNIA 

Millican Oil Co. ANADARKO E&P COMPANY, LP 

Minatome Corp. 1987 Name Change Only ENERGEN RESOURCES CORP. 

Minden Oil & Gas Inc. 1985 CASTLE ENERGY CORP.


Minnehoff Oil Co. 1912 Shell Oil Co. 

Minnehoma Oil Co. CHEVRON 

Mission Development CHEVRON 

Mission E & P, LP PETROHAWK PROPERTIES, LP 

Mission Holdings, LLC PETROHAWK PROPERTIES, LP 

MISSION RESOURCES PARTNERS LP 

Mission Resources Corp. PETROHAWK PROPERTIES, LP 

Mission Resources Inc. 1987 MISSION RESOURCE PTNR LP 

Mississippi River Corp. NATURAL GAS & OIL 

MISSOURI RIVER LP managed by AVIVA 

Mistal, Inc. TOTAL E&P USA INC 

Mitchell & Mitchell Gas & Oil Corp. 1971 DEVON ENERGY 

Mitchell Energy 

MKI ENERGY, INC. 

DEVON ENERGY 

Mobil Oil Corporation EXXON MOBIL CORPORATION 

Mobil Seeligson SUNOCO PARTNERS MKTG & TERMNALS LP 

Mobil-GC EXXON MOBIL CORPORATION 

Moha Petroleum Okla., Inc. CHESAPEAKE ORC, LLC 

Mohawk Petroleum PETER BOSCH 

Monarch Royalty Corp. 1959 

MONCRIEF OIL INTERESTS 

DEVON ENERGY 

Monday Oil Co. 1946 CHEVRON 

Monsanto Company 1972 LION OIL TRADING & TRANSPORTATION, INC. 

Monsanto Oil Co. 1986 BHP PETROLEUM (AMERICAS) INC. 

Montana Power Co. ENCANA ENERGY 

Montara Petroleum Co. NORD-MONTARA PETROLEUM CO. 

Monte Carlo Exploration Inc. REBEL EXPLORATION INC. 

Montecito Corp. FORCHALL OIL 

Montejas Energy Resources, Inc. 1984 SEAHAWK OIL INTERNATIONAL, INC. 

Monterey Oil Co. 1960 EXXON MOBIL CORP. 

Montex Exploration Co. 1957 see Dominion Exploration & Production Inc 

Montoya Oil Co. 1952 FELMONT OIL CORP. 

Moore McCormack Energy, Inc. 1988 

MORAINE PRODUCTION LTD. 

NEXEN PETROLEUM U.S.A. INC. 

Moran Energy Inc. 1984 ANADARKO E&P COMPANY, LP 

Morgan Development, Inc. KERR-MCGEE CORP. 

Morgan Gulf Co. BP AMERICA 

Morgan Resources, Inc. KERR-MCGEE CORP. 

Mormac Energy Corp. 1983 ENCINO ENERGY & DEV CORP. 

Moseley Petroleum Co. 

MOSS PETROLEUM 


Mound Co. 1963 * BHP PETROLEUM (AMERICAS) INC. 

Mountain & Plains Oil Co. 1980 DEVON ENERGY 

Mountain Fuel Supply 1985 QUESTAR CORP. 

Mountain States Oil Co. 1919 CONOCOPHILLIPS


Moxa Energy Corp. 1984 ILEX OIL CORP. 

M-R Holdings Acquisition Company CONOCOPHILLIPS 

M-R Holdings Inc. CONOCOPHILLIPS 

M-R Holdings Inc. No 1 CONOCOPHILLIPS 







MRT Exploration Co. 1983 ANADARKO E&P COMPANY, LP 

Mt. Diable Corp. 1964 CHEVRON 

MTrust Corp., N.A. AMERITRUST TEXAS, N.A. 

Multistates Oil Properties PIONEER NATURAL RESOURCES USA, INC. 

Murchison Trusts 1957 see Dominion Exploration & Production Inc 

Murphy Oil Company CHEVRON U.S.A. INC. 

MURPHY OIL CORP. 

Murvale Company/Murvale Oil Company CHEVRON U.S.A. INC. 

Muskeg Oil Co. BP AMERICA 

Mutual Oil Co. 1928 CONOCOPHILLIPS 

MW Petroleum Corp. APACHE CORP. 

MWJ Producing Co. OCOTILLO 

MWJR Petroleum Corp. APACHE CORP. 

N.G. Penrose 

NABORS DRILLING USA, LP 

PENROSE PRODUCTION CO. 

NAFCO Oil & Gas, Inc. 

NANCE PETROLEUM CORPORATION 

CHEVRON 

Nanome Aggregates Inc. CONOCOPHILLIPS 

NARECO Corporation GLOBAL NATURAL RESOURCES CORP. 

Nat Hunter Producing Co. 1931 BP AMERICA 

National Energy Group, Inc. SANDRIDGE ENERGY, INC. 

National Exchange, Inc. 

NATIONAL FUEL GAS CO. 


National Oil Co. 1974 Shell Oil Co. 

National Oil Co. 1985 FREEMONT ENERGY CORP. 

National Petroleum Co. 1915 BP AMERICA 

National Petroleum Corp. of Tampa 1960 MURPHY OIL CORP. 

Natol Petroleum Corp. DAMSON OIL CORP. 

Natomas Co. 1983 MAXUS ENERGY CORP. 

Natomas North America MAXUS EXPLORATION 

Natomas North America 

NATURAL GAS & OIL 

APACHE CORP. 

Natural Gas and Oil Corporation * TOTAL E&P USA INC 

Natural Gas Clearinghouse TARGA RESOURCES 

Natural Gas Producing Co. 1983 EXXON MOBIL CORP.


Natural Reserves Inc. 1984 AMERICAN RESOURCES INC. 

Natural Resource Management Corp Sandridge Energy 

Natural Resources Corp. of Texas GLOBAL NATURAL RESOURCES CORP. 

Natural Resources Corporation GLOBAL NATURAL RESOURCES CORP. 

Navarro Oil Co. CONOCOPHILLIPS 

Navidad Oil & Gas Co. BOLTEX OIL & GAS CO. 

NCI-Shawnee, LP PETROHAWK PROPERTIES, LP 

Neely & Neely IRION MOUNTAIN OIL CO. 

NEG Oil & Gas LLC SANDRIDGE ENERGY, INC. 

Nelson Petroleum Co. SAMSON PROD SERVICES COMPANY 

NELSON R. THOMAS 

NERCO OIL & GAS 

NEUMIN PRODUCTION CO. 

New Britain, Ltd PETER PAUL PETROLEUM CO., GEN. PTNR 

New York Life Oil & Gas Production Partnerships 

NEWFIELD EXPL MID-CONTINENT INC. 

NEWFIELD EXPLORATION GULF COAST, INC. 


Newmark Resources 1977 

NEWMONT OIL CO. 

TRINITY RESOURCES, INC. 

Newmont Oil Co. 1988 * EXXON MOBIL CORP. 

NFC Petroleum Corp. KAISER-FRANCIS OIL CO. 

NGC Energy Company 1989 

NIKLOS OIL & GAS CO. 

DALEN RESOURCES OIL & GAS CO. 

Niklos Oil & Gas Co. 1987 see Dominion Exploration & Production Inc 

Ninian Oil Co. 1989 see Dominion Exploration & Production Inc 

Ninian Oil Finance Corp. HIGHMOUNT EXPLORATION & PRODUCTION LLC 

Ninian Oil Holding Company see Dominion Exploration & Production Inc 

Noarko Resources Inc. 1986 WICHITA RIVER OIL CO. 

Noble Energy Production, Inc. NOBLE ENERGY, INC. 

Nor-Am Exploration Corp. 

NORD-MONTARA PETROLEUM CO. 

RED EAGLE RESOURCES CORP. 

Nordon Oil Corp. 1969 TEXAS INTERNATIONAL PETROLEUM 

Norfitt FINA OIL & CHEMICAL CO. 

Norfolk Energy Inc. 1993 

NORMANDY OIL & GAS CO. 


Nortex Gas & Oil Co. 1983 EOG RESOURCES, INC. 

North American Oils Consolidated 1950 CONOCOPHILLIPS 

North American Resources Corp. 

NORTH AMERICAN ROYALTIES, INC. 

ENCANA ENERGY 

North Block Gas AVEN GAS & OIL, INC. 

North Central Oil Corp. PLAINS EXPLORATION & PRODUCTION COMPANY 

North Star JOHN P. MCNAUGHTON 

North Timbers Oil, LP XTO ENERGY INC. 

Northeast Energy Development Corp. GREAT AMERICAN RESOURCES, INC. 

Northern Michigan Exploration Co. NEWFIELD EXLP MID-CONTINENT INC.


Northern Natural Gas Co., E&P Division EOG RESOURCES, INC. 

Northern Plains Railroad Company CONOCOPHILLIPS 

Northern Rockies Pipe Line Co. CONOCOPHILLIPS 

Northlander Oil Company 1974 TOTAL E&P USA INC 

NORTHSTAR OPERATING CO. 

NORTHSTAR RESOURCES, INC. 

Northwest Energy 1983 WILLIAMS EXPLORATION CO. 

Northwest Exploration Company 1986 * TOTAL E&P USA INC (50%) 

Northwest Production Corporation CONOCOPHILLIPS 

Norwalk Oil Co. 1950 CONOCOPHILLIPS 

Nova Petroleum Corp. 1985 

NOVA RESOURCE, INC. 

NOVA RESOURCE, INC. 

Noyly Development Co. 1953 

NRM ENERGY LIMITED PARTNERSHIP 

CHEVRON 

NRM Operating Company, L.P. NATURAL RESOURCE MGMT CORP. 

NRM Petroleum Corp. NATURAL RESOURCE MGMT CORP. 

Nucorp Energy Inc. BRIDGE OIL COMPANY, L.P. 

Nuevo Energy Corp. 

NUGGET OIL CORP. 

NUMAC RESOURCES 

PLAINS E & P CO. 

Nu-West Dvlpmt. (U.S. Assets) 1984 * FREEPORT-MCMORAN 

Nu-West Dvlpmt. (U.S. Assets) 1984 * TRANSCO EXPLORATION PARTNERS 

Nylife Resources Inc. see Dominion Exploration & Production Inc 

O.A. Sutton 1962 CHEVRON 

O.G.I. Oil & Gas, Inc. 1984 

OCCIDENTAL OIL & GAS CORP. 

OCCIDENTAL PERMIAN LP (SEE OXY) 

OCCIDENTAL TRANSACTION 1, LLC 

OCEAN DRILLING & EXPLORATION CO. (ODECO) 

DEVON ENERGY 

Ocean Energy Inc. (Houston) DEVON ENERGY PROD. CO, LP 

Ocean Oil & Gas OCEAN DRILLING & EXPLORATION CO. 

Oceana Exploration Co LC VICTORY ENERGY PARTNERS LLC 

Oceanic Oil PRODUCING PROPERTIES 

Ocelot Oil Co. 

OCOTILLO 

OCTOBER OIL CO. 


Odessa Natural Corp. CONOCOPHILLIPS 

Odessa Natural Gasoline Company CONOCOPHILLIPS 

Odessa Pipeline Company CONOCOPHILLIPS 

Odyssey Energy Inc. 1984 TRAFALGAR HOUSE OIL & GAS INC. 

Odyssey Petroleum Co. PETROHAWK PROPERTIES, LP 

Odyssey Petroleum Company HAMPTON RESOURCES CORP. 

Offshore Exploration Oil Co. OXOCO INC. 

Ohio L & M Co., Inc. 1988 ALLIANCE PETROLEUM CORP. 

Ohio Oil Co. 1962 MARATHON PETROLEUM CO.


Oil & Gas Properties CHEVRON 

Oil Center Operating Inc. PENT ENERGY, LLC 

OIL CITY PETROLEUM INC. 

Oil Development Co. of Texas 1978 DEVON SFS OPERATING, INC. 

Oil Development Co. of Utah 1978 DEVON SFS OPERATING, INC. 

Oil Drilling, Inc 1963 DEVON ENERGY 

Oil State Petroleum Co. 1922 EL PASO E&P COMPANY, LP 

Oilman's Properties, Inc. ALAMEDA ENERGY, INC. 

Oklahoma Natural Gas Co. ONEOK EXPLORATION CO. 

Oklahoma Pacific, Ltd. PETER PAUL PETROLEUM CO., GEN. PTNR 

Old Dominion Oil Corp. 1983 RATEX RESOURCES INC. 

Old Maynard Corporation FOREST OIL PERMIAN CORP. 

Old Ocean Oil Co. 1954 BP AMERICA 

Oleum Incorporated MAXUS EXPLORATION 

Olin Oil & Gas Corp. 1962 

OLIX ENERGY 


Olix Industries, Inc. 1981 DEVON ENERGY 

Olsen & Jal SUNOCO PARTNERS MKTG & TERMNALS LP 

Olympia Drilling Programs 1980 MAGIC CIRCLE ENERGY CORP. 

One Liberty Oil Co. 1988 PIONEER NATURAL RESOURCES USA, INC. 

ONEOK Beta Co. TXOK ENERGY RESOURCES CO. 

ONEOK Energy Resources Co. TXOK ENERGY RESOURCES CO. 

ONEOK Exploration Co. CHESAPEAKE ORC, LLC 

ONEOK Resources Co. CHESAPEAKE ORC, LLC 

ONEOK Exploration Co. 1980 ONEOK EXPLORATION CO. 

Onshore Exploration LAMSON/ONSHORE PETROLEUM CORP. 

Onyx Oil Co. 1981 DEVON ENERGY 

Orbit Energy, Inc. 

ORIGINALA PETROLEUM CORP. 

ORBIT PETROLEUM, INC. 

Orion 1981 Royalty Fund, Ltd. GLOBAL NATURAL RESOURCES CORP. 

Orion Louisiana Royalty Fund GLOBAL NATURAL RESOURCES CORP. 

Orion Petroleum, Inc. GLOBAL NATURAL RESOURCES CORP. 

Orion Petroleum, Ltd. 

ORS CORP. 

GLOBAL NATURAL RESOURCES CORP. 

Oryx Energy Company KERR-MCGEE CORP. ONSHORE LP 

Osage Milestone Petroleum CONOCOPHILLIPS 

Osage Oil Co. CONOCOPHILLIPS 

Osage Oil Co. 1901 OCCIDENTAL OIL & GAS CORPORATION 

Osmond Oil Company 1968 Dissolved TOTAL E&P USA INC 

Overland Energy, Inc. 1983 EAGLE EXPLORATION CO. 

Overthrust Resources, Ltd. 1986 POLARIS RESOURCES, INC. 

Owl Petroleum Co. 1986 

OXFORD CONSOLIDATED, INC. 


Oxley Petroleum 

OXOCO INC. 

CHESAPEAKE ORC, LLC


OXY RESOURCES CALIFORNIA, LLC 

OXY USA INC. 

OXY USA WTP, LP 

P & O Oil Corp. 1980 CONOCOPHILLIPS 

Pacific Energy Investments, Inc. KERR-MCGEE CORP. 

Pacific Energy Investments, N.V. KERR-MCGEE CORP. 

Pacific Energy Ventures KERR-MCGEE CORP. 

Pacific Enterprises ABC Corp. PEC MINERALS, LP 

PACIFIC ENTERPRISES OIL & GAS HUNT OIL COMPANY 

PACIFIC ENTERPRISES OIL CO. (USA) HUNT OIL COMPANY 

Pacific Enterprises Roy. Co. 1990 PACIFIC ENTERPRISES OIL CO. (USA) 

Pacific Enterprises Royalty Company SABINE ROYALTY TRUST 

Pacific Federal Ventures KERR-MCGEE CORP. 

Pacific Lighting Oil & Gas 1987 PACIFIC ENTERPRISES OIL & GAS 

Pacific Oil & Gas Development Corp. CALLON PETROLEUM CO. 

Pacific Union TEXAS AMERICAN OIL CORP. 

Pacific Western Oil Corp. 1956 CHEVRON 

Packaging Research Corporation 10/93 HEADINGTON INVESTMENTS, INC. 

Paladin Petroleum Corp. 1987 * ENERGY DEVELOPMENT PARTNERS LTD. 

Palm Petroleum Corp. DAMSON OIL CORP. 

Palmer Oil Co. see Tenneco Inc 

Pan American Petroleum Corp. BP AMERICA 

Pan Ocean Oil Corp. 1976 MARATHON PETROLEUM CO. 

Pan Oil Co. 1972 DAMSON OIL CORP. 

PanCanadian Energy Corp. ENCANA CORP. 

PanCanadian Energy Holdings, Inc. ENCANA ENERGY HOLDINGS, INC. 

PanCanadian Energy Resources, Inc. ENCANA ENERGY RESOURCES, INC. 

Pan Canadian Energy Services Inc. ENCANA ENERGY SERVICES INC. 

PanCanadian Gulf of Mexico, Inc. ENCANA GULF OF MEXICO 

PanCanadian Heritage Lands ENCANA HERITAGE LANDS 

PanCanadian Midstream, Inc. ENCANA MIDSTREAM INC. 

PanCanadian Midstream, Ltd. 

PANCANADIAN PETROLEUM CO. 

ENCANA MIDSTREAM, LTD 

PanCanadian Resources ENCANA RESOURCES 

PanEnergy Field Services, Inc. DUKE ENERGY FIELD SERVICES, INC. 

Pan Energy Transport and Trading Co. TEPPCO CRUDE OIL LP 

Pangea Petroleum Co. 1987 HARCOR ENERGY, INC. 

Panhandle Eastern Exploration Co. 1987 ANADARKO PETROLEUM CORPORATION 

Panhandle Oil Corp. 1956 TOTAL E&P USA INC 

Pantano WESTERN 

Panterra Petroleum NANCE PETROLEUM CORP. 

Paova Oil Co. 1912 Shell Oil Co. 

Paraffine Oil Co. EXXON MOBIL CORP. 

Paraffine Oil Corp. 1981 WILLIAMS EXPLORATION CO. 

Park Oil & Gas Inc. MARTIN EXPLORATION CORP.


Parker & Parsley Petroleum Co. PIONEER NATURAL RESOURCES USA, INC. 

Parker Oil ANADARKO E&P COMPANY, LP 

Parrent Oil & Gas 1983 QUADRANT RESOURCES INC. 

Parris Oil Co. 1912 Shell Oil Co. 

Parten Operating Inc. FARMERS OIL COMPANY 

PARTNERS OIL CO. 

Pasco Oil Properties 1975 BP AMERICA 

Pate Oil Co. 1959 

PATHFINDER PETROLEUM CORP. 


Patina BNR Corporation NOBLE ENERGY, INC. 

Patina Oil & Gas Corporation NOBLE ENERGY, INC. 

Patina Oklahoma Corp. NOBLE ENERGY, INC. 

Patina San Juan Incorporated 

PATRICK PETROLEUM CO. 

NOBLE ENERGY, INC. 

Patrick Petroleum Co. 1984 * ANADARKO E&P COMPANY, LP 

Patrick Petroleum Corp. UNIT PETROLEUM CORP. 

Patrick-Bayou Resources UNIT PETROLEUM CORP. (50%) 

Patrick-Bayou Resources NEWFIELD EXPL MID-CONTINENT INC. (50%) 

Pauley Petroleum Inc. 1987 HONDO OIL & GAS CO. 

Pauline P Lambe KOCH EXPLORATION COMPANY, LLC 

Pax Investment Corp. HESS CORPORATION 

P'Bell Energy Co. SUNDOWN ENERGY INC. 

PCTC - Oregon, Inc. CONOCOPHILLIPS 

PCTC - Skykomish, Inc. CONOCOPHILLIPS 

PCTC, Inc. CONOCOPHILLIPS 

PCU Inc. of Texas 1985 LUCK PETROLEUM CORP. 

Peachtree Production Co. PLAINS RESOURCES, INC. 

Peake Petroleum Co. 1964 EL PASO E&P COMPANY, LP 

Pecos Company CONOCOPHILLIPS 

Pecos Exploration ANADARKO E&P COMPANY, LP 

Peerless Oil & Gas 

Peerless Oil Corporation 1966 

PRIMARY FUELS, INC. 

Pel-Tex Co., Inc. 1986 FREEPORT-MCMORAN 

Pelto Oil Co. 1989 ENERGY DEVELOPMENT CORP. 

Pend Oreille Oil & Gas Corp. 

PENINSULA RESOURCES CORP. 

PENN VIRGINIA CORP. 

SAMSON PROD SERVICES COMPANY 

Penn Virginia MC Energy, LLC PENN VIRGINIA CORP. 

Pennmark Operating Company PENNMARK RESOURCES COMPANY 

Pennmark Production Company 

PENNMARK RESOURCES COMPANY 

ELAND ENERGY, INC. 

Penntex Petroleum Co. CHEVRON 

Pennzenergy DEVON ENERGY 

Pennzoil Exploration & Prod. Co. DEVON ENERGY 

Pennzoil Producing Co. DEVON ENERGY


PENROSE PRODUCTION CO. 

PENT ENERGY, LLC 

Permian Basin Trust CONOCOPHILLIPS 

Perot Family Trust BRIDGE OIL COMPANY, L.P. 

Perry R. Bass, Inc. CHISHOLM TRAIL VENTURES, LP 

Perry R. Bass, Trustee 

PETER BOSCHE 

BMT O&G (WY)(LA)(MULTI-STATE) L.P. 

Petex-Wiser Corporation THE WISER OIL CO. 

Petra Resources, Inc 1986 MUSTANG RESOURCES CORP. 

Petro Gas Producing Company 1978 TOTAL E&P USA INC 

Petro Search Alpha Ltd. Series 1973-l HESS CORPORATION 

Petro Search Exploration Corp. 

PETRO SOURCE PARTNERS LTD. 


Petro-Atlas 1958 

PETRO-CANADA RESOURCES USA INC. 


PetroCorp Acquisition Co. UNIT CORP. 

Petrocorp, Inc. UNIT CORP. 

Petrodel Exploration, Inc. 1988 PETROFINA DELAWARE, INCORPORATED 

Petro-Dynamics, Inc. 1973 

PETROFINA DELAWARE, INCORPORATED 


Petrofina Exploration, Inc. 1985 

PETROFINA GAS PIPELINE COMPANY 


Petrofina Trading Service, Lt. 1987 



Petroleum Corp. of Texas DAMSON OIL CORP. 

Petroleum Corp. of Texas 1984 BRECKENRIDGE OPERATING CO. 

Petroleum Development Corp (Dallas) 1986 PRESIDIO OIL CO. 

Petroleum Exploration THE WISER OIL CO. 

Petroleum Exploration, Inc. 1964 PIONEER NATURAL RESOURCES USA, INC. 

Petroleum Resources Company 9/94 BISON ENERGY CORP. 

Petroleum Technical Services FOREST OIL CORP. 

Petro-Lewis Corp. 1987 

PETROMARK RESOURCES CO. 

FPCO OIL & GAS CO. 

Petrominerals Corp. 1986 MCFARLAND ENERGY INC. 

PetroTide, Ltd. PETER PAUL PETROLEUM CO., GEN. PTNR 

PetroTiger I, II, III, Ltd. PETER PAUL PETROLEUM CO., GEN. PTNR 

PetroVentures Expl. Co. SUNDOWN ENERGY INC. 

Petrus Oil Company BRIDGE OIL COMPANY, L.P. 

PG&E Resources Company DALEN RESOURCES OIL & GAS CO. 

Phillips Oil Co. CONOCOPHILLIPS 

Phillips Petroleum Co. CONOCOPHILLIPS 

Phoenix Oil Co. 1901 

PHOENIX OPERATING CO. 


Phoenix Resources Co. 1982 TEXAS INTERNATIONAL PETROLEUM 

Phoenix Resources, Inc. 1987 ENERGEN RESOURCES CORP.


PICKENS ENERGY CORPORATION 

Pickens Financial Group, Ltd. PICKENS ENERGY CORPORATION 

Pickens Resource Corp. PICKENS ENERGY CORPORATION 

Piedmont Petroleum SOUTHWESTERN PRODUCTION CORP. 

Pierce Petroleum Corp. c.1930 BP AMERICA 

Pilgrim Drilling Co. KAISER-FRANCIS OIL CO. 

Pilgrim Exploration Corp. AMERICAN ENERGY EXPLORATION 

Pin Oak Petroleum, Inc. BRIDGE OIL COMPANY, L.P. 

Pinaga Inc. 1986 PIONEER NATURAL RESOURCES USA, INC. 

Pincher Creek Ranch 

PIONEER NATURAL RESOURCES USA INC. 


Pioneer Oil Company CHEVRON U.S.A. INC. 

Pioneer Production Corp. 1986 PIONEER NATURAL RESOURCES USA, INC. 

Placer Energy Corp. EAGLE OIL & GAS CO 

Placid Oil Co. 


PLAINS MARKETING, LP 

OCCIDENTAL 

Plains Petroleum Co. 

PLAINS RESOURCES, INC. 

WILLIAMS PRODUCTION RMT CO 

Planet Oil & Mineral Corp. 1975 

PLANTATION PETROLEUM ACQUISITION LLC 


Platco Corp. 1967 TEXAS INTERNATIONAL PETROLEUM 

Plateau Petroleum, Inc. 1984 DEVON ENERGY 

Plato DEVON ENERGY 

Plaza Petroleum Inc. 1973 BROCK EXPLORATION CORP. 

Plum Creek Timber Company CONOCOPHILLIPS 

Plymouth Oil Co. 1962 MARATHON OIL COMPANY 

Pogo Energy, Inc. PLAINS EXPLORATION & PRODUCTION COMPANY 

Pogo Panhandle 2004, LP PLAINS EXPLORATION & PRODUCTION COMPANY 

Pogo Producing (Texas Panhandle) Co. 

POLARIS RESOURCES INC. 


Pollack Petroleum Inc. 1984 HARCOR ENERGY, INC. 

Polumbus Co. SAMSON PROD SERVICES COMPANY 

Poppy Oil Co. 1954 CONOCOPHILLIPS 

Porta-Bello, Inc. 1981 RATEX RESOURCES INC. 

Posse Petroleum, Ltd. PETER PAUL PETROLEUM CO., GEN. PTNR 

Post Petroleum Co., Inc. 1988 * PRESIDIO OIL CO. 

Power Resources 1985 NOVA RESOURCE, INC. 

PPPCo.One Oil Company, Ltd. PETER PAUL PETROLEUM CO., GEN. PTNR 

Prado Oil Co. 1965 DALEN RESOURCES OIL & GAS CO. 

Prairie Oil & Gas Co. 1932 BP AMERICA 

Prairie Producing Company UNION OIL CO. OF CALIFORNIA 

Precise Exploration Corp. 1973 BROCK EXPLORATION CORP. 

Presidio Exploration 

PRESIDIO OIL CO. 

PRESIDIO OIL COMPANY


Presidio Operating Co. E.E. NEARBURG 

Presidio West Virginia PRESIDIO OIL COMPANY 

Preston Oil HUNT PETROLEUM (AEC), INC. 

Prima Energy Corp. PETRO-CANADA RESOURCES USA INC 

Prima Oil & Gas Co. PETRO-CANADA RESOURCES USA INC 


Primary Natural Resources, Inc. NEWFIELD EXPLORATION MID-CONTINENT, INC 

Princeville Corporation 1977 CONSOLIDATED OIL & GAS, INC. 

Prize Energy MAGNUM-HUNTER RESOURCES, INC. 

Prochemco HESS CORPORATION 

Producers & Refiners Corp. 1934 BP AMERICA 

Producers Oil Co. 1917 

PRODUCING PROPERTIES 

CHEVRON 

Program Acquisition Co. PETROHAWK PROPERTIES, LP 

Progress Petroleum Shell Oil Co. 

Proton Energy, Inc. PETROHAWK PROPERTIES, LP 

PRS Offshore, Inc. CHEVRON MIDCONTINENT, LP 

Prudential Drilling Co. 1986 NEXEN PETROLEUM U.S.A. INC. 

Prudential Minerals Exploration Corp. SAMSON PROD SERVICES COMPANY 

Prudential Minerals Inc. CONOCOPHILLIPS 

Prudential Oil & Gas Co. 1987 NEXEN PETROLEUM U.S.A. INC. 

Prudential-Bache (Partial Buyout) 11/93 DOMINION OKLA. TEXAS EXPLOR. & PROD., INC. 

PSEC, Inc. CHESAPEAKE ORC, LLC 

Pubco Petroleum Corp. 1973 PIONEER NATURAL RESOURCES USA, INC. 

Publishers Petroleum 1979 CONOCOPHILLIPS 

Pure Oil Co. 1965 CHEVRON CORP. 

Pure Resources, LP 

PXP GULF COAST, INC. 

PYRAMID OIL CO. 

PYRO ENERGY CORP. 

QUADRANT RESOURCES INC. 

CHEVRON MIDCONTINENT, LP 

Quaker Oil Co. 1919 ASHLAND OIL CO. 

Quanah Petroleum Inc. 1983 DEVON ENERGY 

QUEENSTOWN OIL AND GAS, INC. managed by AVIVA 

QUEENSTOWN ROYALTY COMPANY LP managed by AVIVA 

QUEENSTOWN ROYALTY II LP managed by AVIVA 

Questa Oil & Gas Co. 

QUESTAR CORP. 

QUESTAR EXPLORATION & PRODUCTION CO. 

UNIT CORPORATION 

Quinoco Petroleum, Inc. 1989 CHEVRON 

Quinstar Oil Inc. 1984 PLAINS PETROLEUM CO. 

Quintana Petroleum Corp. (LA Properties) 1995 CONOCOPHILLIPS 

Quintana Petroleum Corp. (TX Properties) 2000 HILCORP ENERGY COMPANY 

Quintuple Oil Co. 1912 Shell Oil Co. 

R. Hailey CONOCOPHILLIPS


R.W. Fair Foundation 1975 * TOTAL E&P USA INC 

R.L. Burns Corp. 1981 PYRO ENERGY CORP. 

R.T. Collier Corp. 1957 CHEVRON CORP. 

Rainbow Pipe Line Company FARMERS OIL COMPANY 

Rainbow Resources, Inc. 1978 WILLIAMS EXPLORATION CO. 

Ralph Nix Oil Co. RALPH NIX, A PARTNERSHIP 

RALPH NIX, A PARTNERSHIP 

Ramco Operating Co. RAM ENERGY INC 

Ramco-NYL 1987 Ltd. Part. 

RANGE ENERGY I, INC. 

RANGE ENERGY SERVICES CO. 

RANGE GAS CO 

RANGE GATHERING & PROS. CO 

RANGE OFFSHORE LP 

RAM ENERGY INC 

Range Operating Co. 

RANGE PIPELINE SYSTEMS LP 

RANGE PRODUCTION CO 

RANGE RESOURCES CORP. 


Range Resources Dev. Corp. 

RANGE RESOURCES LLC 


Ranger 

RATEX RESOURCES, INC. 

FRAZIER 

RB Operating Inc. RAM ENERGY INC 

Reading & Bates, Inc. 1988 RAM ENERGY INC 

Reading Minerals Co. GLOBAL NATURAL RESOURCES CORP. 

Real Petroleum BHP PETROLEUM (AMERICAS) INC. 

Reb Petroleum 1980 

REBEL EXPLORATION INC. 

CAYMAN RESOURCES CORP. 

Red Diamond Oil Co. see Tenneco Inc 

Red Eagle Exploration Co. 1987 GREAT LAKES ENERGY PARTNERS LLC 

Red Eagle Resources Corp. GREAT LAKES ENERGY PARTNERS LLC 

RED ROCK ROYALTY LP managed by AVIVA 

Redfern Oil Co. 1970 KERR-MCGEE CORP. 

Redstone Oil & Gas NEWFIELD EXPL MID-CONTINENT INC. 

Reef Energy 1987 GENERAL ENERGY RES & TECH CORP. 

Reef Petroleum Corp. SAMSON PROD SERVICES COMPANY 

Regal Oil 1954 CONOCOPHILLIPS 

Reichhold Energy Corp. 1985 BP AMERICA 

Reily Oil MARTIN EXPLORATION CORP. 

Reiter-Foster 

RELIANCE ENTERPRISES, INC. 

BARUCH-FOSTER CORP. 

Reliance Oil Co. 1917 EXXON MOBIL CORP. 

Reno Oil Co. 1953 see Tenneco Inc 

Renwar Oil Corp. 1960 see Tenneco Inc 

Republic Natural Gas Co. 1961 EXXON MOBIL CORP.


Republic Petroleum Corp. 1949 CONOCOPHILLIPS 

Research Applications Inc. CONOCOPHILLIPS 

RESERVE INDUSTRIES INC. 

Reserve Oil & Gas Co. 1980 CHEVRON 

Reserve Oil & Minerals Corp. 1987 

RESOLUTE ENERGY, INC. 

RESERVE INDUSTRIES INC. 

R-H Holdings Corporation CONOCOPHILLIPS 

Rial Oil Co. 1980 SAGE ENERGY CO. 

Riata Energy, Inc. SANDRIDGE ENERGY, INC. 

Richardson & Bass BASS ENTERPRISES PRODUCTION CO. 

Richardson Petroleum see Tenneco Inc 

Richfield Oil Corp. 1966 BP AMERICA 

Ridgeway Exco Inc. 1985 TAURUS PETROLEUM INC. 

Ridgeway Oil Expl. & Dvlpmt. Corp. 1985 TAURUS PETROLEUM INC. 

Riner Exploration Corp. 1983 TEXON ENERGY CORP. 

Rio Grande Oil Co. 1937 


BP AMERICA 

Risk Exploration, Inc. KISKA OIL CO. 

Rival Resources Inc. QUESTA OIL & GAS CO. 

River Corporation 1973 * 

RIVER PIPELINE COMPANY 

TOTAL E&P USA INC 55% 

River States Oil Co. 1960 MURPHY OIL CORP. 

RME Petroleum ANADARKO E&P COMPANY, LP 

RMR, Inc. 1989 TEXACO TPC, INC. 

Robert M. Bass RMB O&G TX (WY)(LA)(MULTI-STATE) L.P. 

Roberts & Koch - Permian RDR ENERGY, LLC 

Roberts & Koch - Permian & SE New Mexico Properties FOREST OIL PERMIAN CORP. 

Roberts Petroleum 1963 CRYSTAL OIL CO. 

Rock Hill Oil Co. 1955 CHEVRON 

Rock Island Refining Corporation 1989 MARATHON OIL COMPANY 

Rock Island Oil and Refining CO, Inc. KOCH EXPLORATION COMPANY, LLC 

ROCKET OIL & GAS COMPANY LP managed by AVIVA 

Rockhill HOMA OIL & GAS CO. 

Rocky Mountain Energy ANADARKO E&P COMPANY, LP 

Rocky Mountain Ventures, Inc. 1973 G/O INTERNATIONAL, INC. 

Roden Oil Co. 1972 

RODMAN-NOEL OIL CORP. 

ROLAND LIBERDA 


Root Petroleum Corp. 1947 BP AMERICA 

Rosario Resources 

ROSCOE GAS & OIL CO. 

ROSEWOOD RESOURCES INC. 


Rosser & Pendleton M.R. YOUNG 

Rowan Oil SUNOCO PARTNERS MKTG & TERMINALS LP 

Roxana Petroleum Corp. 1928 Shell Oil Co.


Roxoil Drilling, Inc. 1946 DEVON ENERGY 

Royal Petroleum Corp. 1974 KERR-MCGEE CORP. 

Royalty Ventures Corp. 1985 APACHE CORP. 

Roytex Oil Co. 1950 DEVON ENERGY 

RRC OPERATING CO. 

Rusk County Transporting Systems Inc. GLOBAL NATURAL RESOURCES CORP. 

RVO Petroleum Co. 1981 CHEVRON 

Rycade Oil Co. ASHLAND OIL CO. 

Rycade Oil Corp. Shell Oil Co. 

S.A.M. Royalty CHESAPEAKE ORC, LLC 

S.J.F. Corp. 1984 DEVON ENERGY 

S.W. Blount BOUNTY PRODUCTION CO. 

Sabine Corp. PACIFIC ENERPRISES OIL CO. (USA) 

Sabine Exploration Corp. FREEPORT-MCMORAN ENERGY PTNRS 

Sabine Production Co. PACIFIC ENTERPRISES OIL CO. (USA) 

Sabine Royalty Corp. 1977 PACIFIC ENTERPRISES OIL CO. (USA) 

Sack Properties, Inc. (Assets) 

SAGE ENERGY CO. 

IMPERIAL OIL COMPANY OF CALIFORNIA 

Salt Done Production Co. 1956 MARATHON OIL COMPANY 

Saltmount Oil Co. 1951 BP AMERICA 

Salton Riviere Inc. 1976 EOG RESOURCES, INC. 

Sam Wilson see Tenneco Inc 

Samedan Oil Corp. NOBLE ENERGY, INC. 

Samoset Petroleum Co. 1915 

SAMSON RESOURCES 

Shell Oil Co. 

San Jacinto Petroleum Corp. 1958 CONOCOPHILLIPS 

San Jacinto EXXON MOBIL CORP. 

San Juan Basin Trust CONOCOPHILLIPS 

San Juan Oil Co. 1952 CONOCOPHILLIPS 

San Salvador Dev. Co., Inc. BLACKSTONE MINERALS CORP. 

Sand Springs Oil and Gas 

SANDRIDGE ENERGY, INC 

TOKLAN OIL AND GAS CORP. 

Sandy Ridge Oil Co., Inc. 1983 VAN FOSSAN OIL ASSOCIATES 

Sanguine, Ltd. DOMINION EXPLORATION MIDCONTINENT, INC. 

Sanguine, Ltd. SANGUINE GAS EXPLORATION, LLC 

Santa Fe Energy Co. 1989 DEVON ENERGY 

Santa Fe Energy Operating Partners, L.P. DEVON ENERGY 

Sante Fe Energy Resources, Inc. 

SANTA FE MINERALS, INC. 

DEVON ENERGY 

Santa Fe Snyder Corp. DEVON ENERGY 

Santa Fe-Andover Oil Co. 1989 SANTA FE MINERALS, INC. 

Santiago Oil & Gas Co. JOHN P. MACNAUGHTON 

Saturn Gas Systems FARMERS OIL COMPANY 

Saxon Oil Co. 1989 CHEVRON 

Saxon Oil Development Partners L.P. 1989 CHEVRON


Saxon Operating Co. 1989 CHEVRON 

Saxon Operating Partnership L.P. 1989 HEP OPERATING PARTNERS, L.P. 

Saxony Corporation CONOCOPHILLIPS 

Saxony Industries, Inc. 1984 NORMANY OIL & GAS CO. 

Schermerhorn Oil. Corp. CONOCOPHILLIPS 

Scott Oil & Gas Operations CMS ENERGY, INC. 

Scurlock Oil Co. ASHLAND OIL CO. 

Scurlock Permian Corp. ASHLAND OIL CO. 

Scurlock Permian Corp. PLAINS MARKETING, LP 

Seaboard Oil Co. 1958 CHEVRON 

Seagull Energy Corp. DEVON ENERGY 

Seagull Energy Inc. DEVON ENERGY 

Seagull Mid-South Inc. DEVON ENERGY 

Seahawk Gathering GOLIAD OPERATING COMPANY 

SEAHAWK OIL INTERNATIONAL, INC. 

Search Drilling. Co. 1989 Plains E & ) 

Search Energy Corp. ADVANTAGE OIL & GAS LTD. 

Search Exploration Inc. HARKEN ENERGY CORP. 

Seaside Oil Co. CONOCOPHILLIPS 

Seaxe Energy Corp. 1987 

SEDNA ENERGY INC. 

APACHE CORP. 

Sempra Energy Production Company PEC MINERALS, LP 

Sempra Oil & Gas, Inc. PEC MINERALS, LP 

Seneca Oil Co. 1989 

SENECA RESOURCES CORPORATION 


Sensor Oil & Gas Co LENORMAN ENERGY CORP. 

Sentinel Resources Corp. 1987 RED EAGLE RESOURCES CORP. 

Sesquicentennial Land Co. 1987 BALBOA EXPLORATION CO. 

SEW Oil Corp. FINA OIL & CHEMICAL CO. 

SGO Petroleum Inc. DEVON ENERGY PROD. CO, LP 

Shaffer Oil & Refining Co. 1958 

SHALETT OIL & GAS CO. 

CRESCENT OIL & GAS CORP. 

Shalett Oil Co. 1961 MARINE PROPERTIES, INC. 

Shamrock Oil & Gas Corp. 1967 MAXUS ENERGY CORP. 

Shell Co. of California Shell Oil Co. 

Shell Oil Co. SHELL WESTERN E&P INC. 

Shell Oil Co. 1988 (US Onshore Properties) THE MERIDIAN RESOURCES CORPORATION 

Shell Petroleum Co. 1938 

SHELL TRADING (U.S.) CO 

Shell Oil Co. 

Shell Union Oil Corp. 1949 

SHELL WESTERN E&P INC. 

Shell Oil Co. 

Shenandoah Oil Company GLOBAL NATURAL RESOURCES CORP. 

Shenandoah Oil Corp. 1980 CONOCOPHILLIPS 

Shenandoah Oil Corp. 1980 * GALAXY OIL CO. 

Sheridan Energy, Inc. CALPINE NATURAL GAS, LP


Shield Oil Co. NUMAC RESOURCES 

Shield Oil Corp. 1981 DI INDUSTRIES INC. 

Shorline FOREST OIL PERMIAN CORP. 

Sid R. Bass, Inc. SRBI O&G TX (WY)(LA)(MULTI-STATE) L.P. 

Sid R. Bass, Trustee (Sid R. Bass Mgmt. Trust) SRBMT O&G TX (WY)(LA)(MULTI-STATE) L.P. 

Sid Richardson Carbon & Gasoline Company SOUTHERN UNION GAS SERVICES 

Siebens Oil & Gas CHEVRON 

Sierra Exploration Co. 1985 WICHITA RIVER OIL CO. 

Sigmore 1983 MAXUS ENERGY CORP. 

Signal Oil & Gas Co. CONOCOPHILLIPS 

Signal Oil Co. 1912 Shell Oil Co. 

Siler Energy Investments, Inc. 1981 STRIKER PETROLEUM CORP. 

Simpson Investments, Inc. DABB ENERGY CO. 

Sinclair Consolidated Oil Corp. BP AMERICA 

Sinclair Gulf Corp. BP AMERICA 

Sinclair Oil Corp. 1969 BP AMERICA 

Sinclair Oil Refining BP AMERICA 

Sinco Oil Corp. 1982 STARK ENERGY INC. 

Sioux Oil Co. 1968 TESORO PETROLEUM CORP. 

Skelly Oil Co. 1977 CHEVRON 

SKZ Inc. 1986 ZILKHA ENERGY CO. 

SLAPCO EXXON MOBIL CORP. 

Slawson Enterprises SLAWSON EXPLORATION CO., INC. 

SLAWSON EXPLORATION CO., INC. 

Slawson Petroleum Corporation ALAMEDA ENERGY, INC. 

Slick Oil Co. see Tenneco Inc 

Slick Oil Company ASHLAND OIL INC. 

Smith & McGrath BENGAL OIL & GAS 

Smith & McGrath PRIMARY FUELS, INC. 

Snowden & McSweeney Co. 1944 BP AMERICA 

Snyder Oil Corporation DEVON 

SNYDER OIL PARTNERS DEVON 

Socal 1984 CHEVRON 

SOCO Wattenberg Corporation NOBLE ENERGY, INC. 

Socony-Mobil Oil Co. 1966 EXXON MOBIL CORP. 

Socony-Vacuum Oil Co. 1955 EXXON MOBIL CORP. 

Sohio Petroleum Co. DALEN RESOURCES OIL & GAS CO. 12/91 

Solar Refining Co. 1931 DALEN RESOURCES OIL & GAS CO. 12/91 

Sonat Exploration Co EL PASO E&P COMPANY, LP 

Sonora Acquisition Corp. see Dominion Exploration & Production Inc 

Sooner Energy Corp. TATONKA ENERGY INC1 

Sotex 1961 CHEVRON 

Sourgasco, Inc. see Dominion Exploration & Production Inc 

South Fork Oil & Gas Co. TEJAS OIL & GAS CO 

South Louisiana Production Co. EXXON MOBIL CORP.


South Penn Oil Co. DEVON ENERGY 

South States Development Company see Dominion Exploration & Production Inc 

South States Oil & Gas Co. 1983 see Dominion Exploration & Production Inc 

South Timbers Oil LP XTO ENERGY INC. 

Southeastern Exploration Corp. EOG RESOURCES, INC. 

Southern Community Gas Co. VENUS OIL CO. 

Southern Crude Oil Purchasing Co. 1931 BP AMERICA 

Southern Mineral Corporation UNIT CORP. 

Southern Minerals Co. 1970 SUNOCO PARTNERS MKTG & TERMINALS LP 

Southern Natural Gas EL PASO E&P COMPANY, LP 

Southern Petroleum Exploration, Inc. THE WISER OIL CO. 

Southern Production 1950 BP AMERICA 

Southern Union Production Co. see Supron Energy Corp. 

Southland Gathering Company CONOCOPHILLIPS 

Southland Pipeline Company CONOCOPHILLIPS 

Southland Royalty Co. 1985 CONOCOPHILLIPS 

Southport Exploration, Inc. NEWFIELD EXPL MID-CONTINENT INC. (50%) 

Southport Exploration, Inc. AVIVA AMERICA INC. (50%) 

Southport Petroleum Co. of Delaware 1945 TOTAL E&P USA INC 

Southwest Forrest Gas Gathering Co. ANADARKO E&P COMPANY, LP 

Southwest Gas Supply SUNDOWN ENERGY INC. 

Southwest Land Development Company FINAL OIL AND CHEMICAL COMPANY 

SOUTHWESTERN ENERGY 

Southwestern Oil & Refining Co. 1974 

SOUTHWESTERN PRODUCTION CORP. 

KERR-MCGEE CORP. 

Sovereign Exploration Co. BONANZA PETROLEUM, INC. 

Sparkman Energy Corp. 1985 ESKEY INC. 

Sparkman Producing Co. 1985 PLAINS EXPLORATION & PRODUCTION COMPANY 

Spectrum 7 Energy Corp 1980-83 Drlg Prgs CABOT OIL & GAS CORP. 

SPG Exploration Corp. 1988 ANADARKO E&P COMPANY, LP 

Spinnaker Exploration Co., LLC HYDRO GULF OF MEXICO, LLC 

Spring Resources, Inc. XTO ENERGY INC. 

Spur Oil Co. 1960 MURPHY OIL CORP. 

SRC Production CONOCOPHILLIPS 

SRC Realty Company CONOCOPHILLIPS 

St. Joe Petroleum 

ST. MARY LAND & EXPLORATION CO. 


St. Mary Operating Company ST. MARY LAND & EXPLORATION, INC. 

Stallion Energy, Inc. PLAINS EXPLORATION & PRODUCTION COMPANY 

Stallion Panhandle 2001, LP PLAINS EXPLORATION & PRODUCTION COMPANY 

Stallion Production Corp. PLAINS EXPLORATION & PRODUCTION COMPANY 

Standard Gas Co./Standard Gasoline Co. CHEVRON U.S.A. INC. 

Standard Oil & Gas Co. of Oklahoma 1912 Shell Oil Co. 

Standard Oil Co. of California 1984 CHEVRON 

Standard Oil Co. of Indiana 1985 BP AMERICA


Standard Oil Co. of Kansas 1948 BP AMERICA 

Standard Oil Co. of Kentucky 1961 CHEVRON 

Standard Oil Co. of Louisiana EXXON MOBIL CORP. 

Standard Oil Co. of Nebraska 1939 BP AMERICA 

Standard Oil Co. of New Jersey 1972 EXXON MOBIL CORP. 

Standard Oil Co. of New York 1931 EXXON MOBIL CORP. 

Standard Oil Co. of Ohio 1985 DALEN RESOURCES OIL & GAS CO. 

Standard Oil Co. of Texas 1961 CHEVRON 

Standard Oil Production Co. 1989 DALEN RESOURCES OIL & GAS CO. 

Stanolind Oil & Gas Co. 1981 BP AMERICA 

Star Oil & Gas Corp. 1980 TWO FOUR SIX EXPLORATION INC. 

STARK ENERGY INC. 

Starr Holdings Partnership KERRCO INC. 

State Exploration STATEX PETROLEUM INC. 

States Exploration 1985 

STATEX PETROLEUM INC. 

WEPCO ENERGY CO. 

Steaua Romana (U.S.) Inc. 1987 AMBRIT ENERGY CORP. 

Stephens Petroleum F.E. HARPER 

Sterling Oil Co. 1950 see Tenneco Inc 

Stetco Petroleum Co. DEVON ENERGY 

Stevens Oil & Gas ANADARKO PETROLEUM CORPORATION 

STJ LP mangaed by AVIVA 

Stoltz Wagner & Brown 1984 WAGNER & BROWN, LTD. 

Stone & Webster Oil Co, Inc. 

STONE ENERGY CORPORATION 

UNIT CORP. 

Stone Petroleum Co. 1983 FREEPORT-MCMORAN INC. 

Stove Creek Done Oil & Rfng. Co. 1955 BIG PINEY OIL & GAS CO. 

Strata Crop. 1986 RANGE RESOURCES CO. PETROLEUM INC. 

Strata Energy, Inc. 1983 

STRIKER PETROLEUM CORP. 

NATURAL RESOURCES MGMT CORP. 

Subsurface, Inc. CHESAPEAKE KNAN ACQUISITION, LLC 

Suburban Propane Gas Corp. 1983 ANADARKO E&P COMPANY, LP 

Sumac Petroleum 1962 CHEVRON 

Summit Energy Inc. 1988 CASPEN OIL, INC. 

Sun Exploration & Production 1989 KERR-MCGEE OIL & GAS ONSHORE, LP. 

Sun Refining and Marketing Co. SUNOCO PARTNERS MKGT & TERMINALS LP 

Sunburst Exploration 1993 CHEVRON 

Sunburst Oil Co. 1922 MARATHON PETROLEUM CO. 

Sundance Energy Corp. 

SUNDOWN ENERGY INC. 

TEXAS MERIDIAN RES. LTD. 

Sunmark Exploration Co. KERR-MCGEE OIL & GAS ONSHORE, LP. 

Sunningdale Oils. Ltd. KERR-MCGEE CORP. 

Sunny South Oil & Gas Inc. 1985 KELLEY OIL CORP. 

Sunnybrook Oil & Gas Inc. 

SUNOCO PARTNERS MKT. & TERMINALS LP 

PLAINS RESOURCES, INC.


Sunray Oil Co. 1955 KERR-MCGEE OIL & GAS ONSHORE, LP. 

Sunray-DX Oil Co. 1968 KERR-MCGEE OIL & GAS ONSHORE, LP. 

Sunray-Mid Continent Oil Co. 1962 KERR-MCGEE OIL & GAS ONSHORE, LP. 

Sunrise Oilfield Supply Company MERIDIAN PIPE & EQUIPMENT CO., INC. 

Sunrise Petroleum Inc. 1981 ORS CORP. 

Sunset International Petroleum CHEVRON 

Sunset Oil Co. HESS CORPORATION 

Superior Of Oklahoma 1943 SUNOCO PARTNERS MKTG & TERMINALS LP 

Superior Oil Co. 1984 EXXON MOBIL CORP. 

Supply Development Group SUNDOWN ENERGY INC. 

Supron Energy Corp. 1982 CONOCOPHILLIPS 

Suran Royalty CHESAPEAKE ORC, LLC 

Surrey Oil & Gas Corp. 1960 MARATHON OIL COMPANY 

Swiss Oil Corp. 1936 ASHLAND OIL INC. 

Sydson D'Oro Expl. Co. Inc. TEXAS MERIDIAN RES. LTD. 

T & L Oil 1961 CHEVRON 

Tal Vez Oil Co. 1983 LINGEN OIL & GAS INC. 

Tana Production Corp. 1989 TEXACO TPC, INC. 

Targa Oil & Gas, Inc. 1983 CHAPMAN ENERGY INC. 

Target Oil & Gas, Inc. 1984 EGRET ENERGY CORP. 

Taurus Exploration Inc. ENERGEN RESOURCES CORP. 

Taurus Exploration USA ENERGEN RESOURCES CORP. 

TAURUS PETROLEUM INC. 

Taylor Oil & Gas Co 1955 see Tenneco Inc 

TCM, LLC PETROHAWK PROPERTIES, LP 

TDT Diverse L.P. FNRC TDT LP 

TEAI Oil & Gas Co. PETROHAWK PROPERTIES, LP 

Teal Petroleum Co. SAMSON PROD SERVICES COMPANY 

Tectonic Energy Cor. 1984 ENERTEC CORP. 

Ted Weiner TEXAS CRUDE INC. 

Tee Oil, Inc. 1988* PRESIDIO OIL CO. 

Tee Operating Co. 

TEJAS GAS CO. 

CHAPMAN RESOURCES 

Tejas Production Co. 1980 WAINOCO OIL CORP. 

Tejax Energy 1987 HEADINGTON INVESTMENTS, INC. 

Tekoil Corp. 1962 CONSOLIDATED OIL & GAS, INC. 

Tema Oil Co. PIONEER NATURAL RESOURCES USA, INC. 

Temex Energy, Inc. CALPINE NATURAL GAS, LP 

Templeton Energy, Inc 1987 

TENKAY RESOURCES INC. 

TGX CORP. 

Tenneco Gas Prod. Co. RANGE ENERGY VENTURE CORP 

Tenneco LaTerre, Inc. 1988 TOTAL E&P USA INC 

Tenneco Ventures Corp. RANGE ENERGY VENTURE CORP 

Tenneco Ventures Finance Corp RANGE ENERGY FINANCE CORP 

Tenneco, Inc. / Tenneco Oil Company see TOC -


Tennessee Glacier Park Co. CONOCOPHILLIPS 

TEPPCO CRUDE OIL LP 

Terra Resources, Inc. 1981* 

TERRAPET ENERGY CORP. 

OXOCO INC. 

TES Acquisition Corp. 

TESORO PETROLEUM CORP. 

TEX/CON OIL & GAS CO. 


TEXACO TPC INC. CHEVRON 

Texaco, Inc. 

TEXAS AMERICAN OIL CORP. 

CHEVRON 

Texas Commerce Bank JP MORGAN CHASE 

Texas Crude Inc WESTERLY EXPLORATION, INC. 

Texas Eagle Oil Co. 1984 RANGE PRODUCTION CO. MINERALS, INC. 

Texas Eastern Exploration 1986* NOBLE ENERGY, INC. OIL CORP. 

Texas Fuel Co. 1902 CHEVRON 

Texas Gas Exploration Corp. 1986 ENERGEN RESOURCES CORP. 

Texas Gas Producing Co. HESS CORPORATION 

Texas Gulf Production 1963 BP AMERICA 

Texas International Oil Co., Ltd. GLOBAL NATURAL RESOURCES CORP. 

Texas International Petroleum Co. 1987 ENERGEN RESOURCES CORP. 

Texas Meridian Operating Co. Ltd. THE MERIDIAN RESOURCES CORPORATION 

Texas Meridian Prod. Co. Ltd 

TEXAS MERIDIAN RESOURCES LTD. 

THE MERIDIAN RESOURCES CORPORATION 

Texas National Petroleum Corp. 1962 CHEVRON CORP. 

Texas Northeast Oil & Gas Co. MOORE MCCORMACK ENERGY, INC. 

Texas Oil & Gas Corp. MARATHON OIL COMPANY 

Texas Pacific Oil Co. 1979 SUNOCO PARTNERS MKTG & TERMINALS LP 

Texas Royalty Company (Assets) IMPERIAL OIL COMPANY 

Texas Southwest Resources Corp. KAISER-FRANCIS OIL CO. 

Texasgulf, Inc. 1981 ELF-AQUITAINE, INC. 

Texcan Resources Corp. 1982 CONOCOPHILLIPS 

Texco Energy Corp. EGRET ENERGY CORP. 

Texcon DALEN RESOURCES OIL & GAS CO. 12/91 

Texhoma Oil & Refining Co. 1928 CONOCOPHILLIPS 

Texoma Production Co. 1985 MCN EXPLORATION 

Texoma Production Co. 1986 

TEXON ENERGY CORP. 

APACHE CORP. 

Texon Oil & Land Co. CONOCOPHILLIPS 

Texota Oil Co. 1968 NORTH AMERICAN RESOURCES CORP. 

Tex-Star Oil & Gas Corp. 1964 MARATHON OIL COMPANY 

TGX Corp. CALPINE NATURAL GAS, LP 

The Bodrain Company (Merger) IMPERIAL OIL COMPANY 

Thomas C Mueller, Inc. Ltd & of Crawford Co. XTO ENERGY INC. 

Three States Natural Gas Co. 1961 see Tenneco Inc 

Thru Line, Inc. THRU LINE O&G TX (WY)(LA)(MULTI-STATE) LP


Tide Water Associated Oil Co. CHEVRON 

Tidewater Oil Co. 1967 CHEVRON 

TIPCO see TEXAS INTERNATIONAL PETROLEUM 

TIPPERARY OIL & GAS CORPORATION 

Tital Resources I, Inc. CHEVRON MIDCONTINENT, LP 

Titan Resources CHEVRON CORP. 

Titan Resources, LP CHEVRON MIDCONTINENT, LP 

TOC - Gulf Coast Onshore TOTAL E&P USA INC 

TOC - California BP AMERICA 

TOC - Gulf of Mexico Federal Offshore CHEVRON 

TOC - Houston Oil & Minerals DEVON ENERGY 

TOC - Mid-Continent PIONEER NATURAL RESOURCES USA, INC. 

TOC - Norway CONOCOPHILLIPS 

TOC - Rocky Mountains BP AMERICA 

TOC Acquisitions Corp. 

TOKLAN OIL & GAS CORPORATION 


Toklan Oil Cor. 1957 see Dominion Exploration & Production Inc 

Toltec Oil & Gas Inc. 1983 CHAPMAN ENERGY INC. 

Tom Brown, Inc. ENCANA OIL & GAS USA, INC. 

Tom Brown, Inc. (NM Properties) MANGUM HUNTER 

Tonka Oil & Gas Ltd. 1974 

TORCH ENERGY ASSOCIATES 

TORCH OIL & GAS CO. 

PACIFIC ENTERPRISES OIL CO. (USA) 

Tosco Corporation 1985 LION OIL TRADING & TRANSPORTATION, INC. 

Tosco-Lion, Inc. 1978 



Total Minatome Corp. ENERGEN RESOURCES 

Total Petro Inc 1987, Rocky Mtn Prop Only ENERGEN RESOURCES CORP. 

Total Petroleum (North America) Ltd. ULTRAMAR DIAMOND SHAMROCK CORP. 

TotalFina TOTAL E&P USA INC 

Towner Petroleum, 1986 ZILKHA ENERGY CO. 

Trafalgar House Oil & Gas, Inc., 1989 

TRANS ATLANTIC RESOURCES CORP. 


HARDY OIL & GAS USA INC. 

Transco Expl Ptnrs Ltd (Offshore) 1988 * ENERGY DEVELOPMENT CORP. 

Transco Expl Ptnrs Ltd (Onshore) 1988 * see Dominion Exploration & Production Inc 

Transco Exploration & Production WILLIAMS EXPLORATION CO. 

Transco Exploration Co. 

TRANSCONTINENTAL OIL CO. 

FOREST OIL CORPORATION 

Transcontinental Oil Co. 1930* MARATHON PETROLEUM CO. 

Transcontinental Production Co. FOREST OIL CORPORATION 

Transierra Exploration Corp. BELCOR, INC. 

Transmountain Production Co. 1974 TOTAL E&P USA INC 

TransOcean Oil Co. 1980 EXXON MOBIL CORP. 

Transwestern Oil Co. 1946 SUN CO, INC (R&M)


Tranwestern Royalty Corp. 1949 DEVON ENERGY 

Transworld Oil USA, Inc. TRANSWORLD E&P, INC. 

Traver Oil Co. LAVINO OIL & GAS CO. 

Traverse Oil Co. 1985 FEDERATED NATURAL RES. CORP. 

Trebol Drilling Company CONOCOPHILLIPS 

Trebol Oil RODMAN-NOEL OIL CORP. 

Tredegar Oil & Gas Corp. WAINOCO OIL CORP. 

Tredegar Petroleum Corp. WAINOCO OIL CORP. 

Tredegar Properties, Inc. WAINOCO OIL CORP. 

Trend Drilling Co. NABORS DRILLING USA, LP 

Tribal Oil Co. 1974 BUTTES OIL & GAS CO. 

Tribune Oil Cor. 1983 PACIFIC ENTERPRISES OIL CO. (USA) 

Trice Production Co. HESS CORPORATION 

Tricentrol Resources, Inc. 1984 BASF CORP/WINTERSHALL ENERGY 

Tricentrol U.S., Inc. 1988 BP AMERICA 

Trident NGL Inc. NATURAL GAS CLEARINGHOUSE 

Trigood Oil Co. ANADARKO E&P COMPANY, LP 

Trinidad Oil 1956 CHEVRON 

Trinity Oil & Gas Co. QUESTA OIL & GAS CO. 

TRINITY RESOURCES, INC. 

Tri-Power Petroleum Inc. 1986 PLAINS PETROLEUM CO. 

TRITON MINERALS & ROYALTY, INC. 

TRITON OIL & GAS CORP. 

Triton Producing Co. HESS CORPORATION 

Triumph Resources, LLC 2002 CHAPARRAL ENERGY, INC. 

True's Oil Co. 1959 BP AMERICA 

Trunkline 1967 ANADARKO PETROLEUM CORPORATION 

TRUST PIPE LINE CO. 

Turner Oil Co. 1915 Shell Oil Co. 

Twin Oil BP AMERICA 

TWO FOUR SIX EXPLORATION INC. 

TXL Oil Corp. 1962 CHEVRON 

TXO Production Co. 1991 MARATHON OIL COMPANY 

TXOK ENERGY RESOURCES CO. 

U.S. Exploration Co. 1989 THE MERIDIAN RESOURCES CORPORATION 

U.S. Exploration Holdings, Inc. NOBLE ENERGY, INC. 

U.S. MINERALS EXPLORATION CO. 

U.S. RESOURCES INC. 

U.S. Royalties Corp. IMPERIAL OIL COMPANY 

UGI Corp. 1985 see Dominion Exploration & Production Inc 

ULTRAMAR DIAMOND SHAMROCK CORP. 

UMC Pet. Res. Cor. 1989 UMC PETROLEUM CORP. 


UNIMAR CORP. (UNION TEXAS/ULTRAMAR) 

Union Carbide Petroleum Corp. 1971 ASHLAND OIL, INC.


Union Connection, Inc. ORBIT PETROLEUM, INC. 

Union Exploration Partners, Ltd. CHEVRON CORP. 

Union Gas & Oil Co. (Kentucky ) 1925 ASHLAND OIL, INC. 

Union Oil & Gas Corp. of Louisiana CONOCOPHILLIPS 

Union Oil Co. of California 1985 CHEVRON CORP. 

Union Pacific Resources Company ANADARKO E&P COMPANY, LP 

Union Petroleum Co. 1920 BP AMERICA 

Union Producing Co. DEVON ENERGY 

Union Sulphur WESTERN 

Union Texas Natural Gas 1962 BP AMERICA 

Union Texas Petroleum Corp. BP AMERICA 

Unit Carbon Co. ASHLAND OIL, INC. 

UNIT CORP. 

Unit Drilling & Exploration Co. 1985 UNIT CORP. 

United Central Oil Co. 1925 CROWN CENTRAL PETROLEUM CORP. 

United Oil Co. 1916 CONOCOPHILLIPS 

United Oil Co. 1926 BP AMERICA 

United Oil Cor. 1988 CREDO PETROLEUM CORP. 

United Producing Co. ASHLAND 

United Refining Co. 1976 DEVON ENERGY 

United States Exploration, Inc. NOBLE ENERGY, INC. 

Universal Consolidated Oil Co. 1961 CHEVRON 

Universal Energy Corp. 1986 ORS CORP. 

Universal Explorations Ltd 1989 CONQUEST EXPLORATION CO. 

Universal Resources Corp. QUESTAR EXPLORATION AND PRODUCTION CO. 

Universal Resources Corp. 1986 QUESTAR CORP. 

Unocal Corp. CHEVRON CORP. 

Unocal Exploration Corp. CHEVRON CORP. 

Usenco, Inc. 1988 PLAINS EXPLORATION & PRODUCTION COMPANY 

USX Corp. (formerly U.S. Steel) 1983 MARATHON OIL COMPANY 

Utah Oil BP AMERICA 

V.M. Harrison OCCIDENTAL OIL & GAS CORPORATION 

Vacuum Oil Co. 1931 

VADIS INVESTMENTS, INC. 


Valero Producing Co. 1987 

VALTEX PETROLUEM, INC. 

WACKER OIL INC. 

Valley Fina Oil Company 1979 

VAN DYKE ENERGY CO. 


Van Dyke Oil Co. 

VAN FOSSAN OIL ASSOCIATES 

VAN DYKE ENERGY CO. 

Vanderbilt Energy 1985 

VANGUARD OIL & GAS INC. 

DEVON ENERGY 

Vanguard Petroleum Corp. VANGUARD OIL & GAS INC. 

Vanguard Pipeline Corp. VANGUARD OIL & GAS INC. 

Vantage Point Energy 8/92 CONVEST ENERGY CORPORATION


Vantage Point Operating Co. CONVEST ENERGY CORPORATION 

VARN OIL CO. 

Vastar Offshore, Inc. BP AMERICA 

Vastar Resources, Inc. BP AMERICA 

Veneucot Resources, Inc. 

VENEX CORP. 

DIVERSE ENERGY INVESTMENTS INC. 

Venezuela Syndicate, Inc. 1957 

VENUS OIL CO. 

VICTORY ENERGY PARTNERS LLC 


Viking Oil Ltd. 1980 SUN CO., INC. (R&M) 

Vintage Petroleum, LLC OCCIDENTAL PETRO. CORP. 

Visa Energy Corp. 

VOLVO PETROLEUM, INC. 

ENSOURCE INC. 

Voyager HOWELL PETROLEUM CO. 

Voyager Petroleum TRANSCO EXPLORATION PARTNERS 

Voyager Petroleum FREEPART-MCMORAN 

W.A. Moncrief, Jr. MONCRIEF OIL INTERESTS 

W.K. Oil Co. 1915 Shell Oil Co. 

W.L. Hinds CONOCOPHILLIPS 

W.B. Osborn LONGHORN OIL & GAS 

W.E. Bakke ABLE & BANCROFT 

W.E. Carl Oil Co. MCFARLAND ENERGY, INC. 

W.G. Skeeters Co. 1980 

W.H. HEISLER, JR. 

HARKEN OIL & GAS CORP. 

W.R. Davis CONOCOPHILLIPS 

Wacker Oil Inc. DEVON ENERGY 

Wagner & Brown WAGNER & BROWN, LTD. 

Wagner & Brown II 

WAGNER & BROWN LTD. 

WAGNER & BROWN, LTD. 

Wainoco Oil Corp. FRONTIER OIL CORPORATION 

Walker Energy 1985 TEXAS MERIDIAN RESOURCES LTD 

Walker Energy Partners MLP 1989 TEXAS MERIDIAN RESOURCES LTD 

Waller County Minerals Co. GLOBAL NATURAL RESOURCES CORP. 

Walton Oil Co. 1982 OCTOBER OIL CO. 

Warren Petroleum CHEVRON 

Warren-Bradshaw CHEVRON 

Washington Royalties Company (Merger) IMPERIAL OIL COMPANY 

Washita Production Co. CHESAPEAKE ORC, LLC 

Waterford Energy Inc. 2/91 KAISER-FRANCIS OIL CO. 

Watson & Taylor Energy Inc 1987* KERR-MCGEE CORP. 

Watson Oil Corp. 1980 UMC PETROLEUM CORP. 

Waverly Oil Co., Inc. 1985 WAINOCO OIL CORP. 

WCOG Properties, Ltd. PETROHAWK PROPERTIES, LP 

WD Partners, LP WD O&G TX (WY)(LA)(MULTI-STATE) L.P. 

Weaver Oil & Gas Corp. ANADARKO E&P COMPANY, LP


Webb Resources DALEN RESOURCES OIL & GAS CO. 12/91 

Weber Oil Co. 1942 MARATHON PETROLEUM CO. 

Weber Oil Co. 1957 EQUITY OIL CO. 

WECO Development Corp. HESS CORPORATION 

WEDCO OXFORD CONSOLIDATED, INC. 

Wellington Oil Co. CHEVRON 

WENTEX INTERNATIONAL, INC. 

WEPCO ENERGY CO. 

Westport Oil & Gas Co., Inc. KERR-MCGEE OIL & GAS ONSHORE, LP. 

West Natural Gas 1962 BP AMERICA 

West Timbers Oil, LP XTO ENERGY INC. 

Westates Petroleum Co. 1976 DEVON ENERGY 

Westcoast Oil & Gas 1976 

WESTERN 

PRESDIO OIL CO. 

Western Associated Development Corp. BEACON EXPLORATION CO. 

Western Energy Dvlpmt. Co., Inc. 1986 

WESTERN GEOPHYSICAL 

WESTERN NATURAL GAS CO. 

OXFORD CONSOLIDATED, INC. 

Western Oil & Fuel Co. 1958 CONOCOPHILLIPS 

Western Oil Fields Corp. 1928 CONOCOPHILLIPS 

Western Oil Fields Inc. CASPEN OIL, INC. 

Western Oil Shale Corp. 1980 MAGIC CIRCLE ENERGY CORP. 

Western Pacific Petroleum, Inc. GLOBAL NATURAL RESOURCES CORP. 

Western States Producing Co. ANADARKO E&P COMPANY, LP 

Westheimer-Neustadt Corp. 1981 KFOC, INC. 

Westhoma Oil Co. 1976 CONOCOPHILLIPS 

Westland Drilling Co. GOLIAD OPERATING COMPANY 

Westland Exploration Co. 1992 KAISER-FRANCIS OIL CO. 

Westpan Resources LP PIONEER NATURAL RESOURCES USA, INC. 

Westport Oil & Gas Co., LP KERR-MCGEE OIL & GAS ONSHORE, LP. 

Westport Resources Corp. KERR-MCGEE 

Westrans Petroleum Inc. 1976 

WEXCO OF DELAWARE INC. 

FREEPORT-MCMORAN ENERGY PTNRS 

Whaley Co. 1962 CHEVRON 

White Eagle CIMAREX ENERGY CO. 

White Rock Oil Co. GOLIAD OPERATING COMPANY 

WHITE TIGER LP managed by AVIVA 

White Wing Oil Co. GOLIAD OPERATING COMPANY 

Whitehall Oil Co. ASHLAND OIL INC. 

Whitewood Resources Inc. 

WHITING PETROLEUM CORP. 


Wichita Industries Inc. 1985 

WICHITA RIVER OIL CO. 

WICHITA RIVER OIL CO. 

Wicor Inc. 1985 WEXCO OF DELAWARE INC. 

Wilcox LONGHORN OIL & GAS CO.


Wilcox Oil Corp. 1964 see Tenneco Inc 

WILLIAMS EXPLORATION CO. 

Williams Exploration Co. 1986* 

WILLIAMS PRODUCTION RMT CO. 

TOTAL E&P USA INC I (50%) 

Wilshire Oil Co. B-L ASSOCIATES 

Wilshire Oil of California CHEVRON 

Winchester Energy Co. 1985 TERRAPET ENERGY CORP. 

Windsor Petroleum SOUTHWESTERN PRODUCTION CORP. 

Windsor Producing Co. 1981 SANTA FE MINERALS, INC. 

Winter Oil Co. BP AMERICA 

Wintershall Energy ELAND ENERGY, INC. 

Wintershall Oil & Gas Co. 1979* 

WINWELL RESOURCES, INC. 


Wiser Oil Co. FORREST OIL CORPORATION 

W-N Energy Corp. 11/92 KFOC, INC. 

Wolfson Oil CHEVRON 

Wolverine Exploration Co. UNIT CORP. 

Wolverine Gas and Oil Co., Inc. HIGHMOUNT EXPL & PROD MICHIGAN LLC 

Wolverine Petroleum Corp. 1938 Shell Oil Co. 

Wolverine Reserves, LLC HIGHMOUNT EXPLORATION & PRODUCTION LLC 

Woodbine Production Corp. 1984 ILEX OIL CORP. 

Woodley Petroleum Co. 1959 CHEVRON CORP. 

Woodward Group, Inc. HIGHMOUNT EXPLORATION & PRODUCTION LLC 

Wood River Oil & Refining Company KOCH EXPLORATION COMPANY, LLC 

Worland Associates 1998 CONTINENTAL RESOURCES 

Worldwide Energy Corp. 1985 HESS CORPORATION 

Worldwide One, Inc. HESS CORPORATION 

Worldwide Petroleum Corp. 1968 CONSOLIDATED OIL & GAS, INC. 

Wymore Oil Co. EL PASO E&P COMPANY, LP 

Wynn-Crosby 1994 through 2000 (inclusive) & 2002, Ltd. PETROHAWK PROPERTIES, LP 

Xeno, Inc. 


ENCANA ENERGY 

Yamac Production Co. NEUMIN PRODUCTION CO. 

Yankee Cos. ACCESS ENERGY CORP 

Yankee Oil & Gas 1985 ACCESS ENERGY CORP 

Yates Exploration Co. 1981 OXOCO INC. 

Yellowstone Oil Co. DON FRANTZEN 

York & Harper 1954 see Tenneco Inc 

Yount-Lee Oil Co. 1935 BP AMERICA 

YPI Petroleum Inc. 1981 CASPEN OIL, INC. 

Zapata Petroleum 

ZENERGY, INC. 

DEVON ENERGY 

Zevex Corporation 

ZG ENERGY CORP. 

LL&B COMPANIES 

ZIA Energy, Inc. PLANTATION PETROLEUM ACQUISITIONS, LLC


ZIA Gathering, Inc. CONOCOPHILLIPS 

Zilkha Energy Company EL PASO E&P COMPANY, LP 

ZIM Energy Corp. 1987 MUSTANG RESOURCES CORP. 

Zinke & Trumbo, Inc. ZENERGY, INC

FROM/CURRENT TO (CURRENT) 1400 Corporation ... - NADOA

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