Operators

1,591 operator names as published by NDIC, ranked by well count.

• CONTINENTAL RESOURCES, INC. 3,593
• HESS BAKKEN INVESTMENTS II, LLC 2,909
• WHITING OIL AND GAS CORPORATION 2,540
• DEVON ENERGY WILLISTON, L.L.C. 2,360
• OASIS PETROLEUM NORTH AMERICA LLC 2,223
• BURLINGTON RESOURCES OIL & GAS COMPANY LP 1,443
• XTO ENERGY INC 1,406
• ENERPLUS RESOURCES USA CORPORATION 1,357
• MARATHON OIL COMPANY 1,328
• EOG RESOURCES, INC. 1,291
• PETRO-HUNT, L.L.C. 1,067
• KRAKEN OPERATING, LLC 988
• SLAWSON EXPLORATION COMPANY, INC. 786
• AMERADA HESS CORPORATION 723
• COBRA OIL & GAS CORPORATION 694
• FORMENTERA OPERATIONS, LLC 570
• DENBURY ONSHORE, LLC 478
• HUNT OIL COMPANY 439
• LIME ROCK RESOURCES III-A, L.P. 398
• SCOUT ENERGY MANAGEMENT LLC 388
• MUREX PETROLEUM CORPORATION 356
• Phoenix Operating LLC 338
• WHITE ROCK OIL & GAS, LLC 297
• Zavanna Energy Operating, LLC 288
• Silver Hill Energy Operating, LLC 249
• KODA RESOURCES OPERATING, LLC 243
• FOUNDATION ENERGY MANAGEMENT, LLC 239
• PETRO-HUNT DAKOTA, LLC 179
• EAGLE OPERATING, INC. 164
• CARDINAL PETROLEUM CO. 160
• CITATION OIL & GAS CORP. 159
• EMPIRE NORTH DAKOTA LLC 158
• TEXACO EXPLORATION & PRODUCTION INC. 155
• BHP PETROLEUM COMPANY, INC. 143
• SOGC, LLC 140
• UNION PACIFIC RESOURCES CO. 137
• CONOCO INC. 129
• MORNINGSTAR OPERATING LLC 125
• 31 OPERATING, LLC 124
• WPX ENERGY WILLISTON, LLC 123
• SHELL OIL CO. 121
• AMOCO PRODUCTION CO. 118
• CHESAPEAKE OPERATING, INC. 118
• FULCRUM ENERGY OPERATING, LLC 112
• SM ENERGY COMPANY 111
• ZENERGY, INC 111
• ANR PRODUCTION COMPANY 110
• TEXACO INC. 107
• PETROSHALE (US) INC. 104
• GULF OIL CORP. 101
• REMUDA ENERGY DEVELOPMENT LLC 101
• MARZA OIL LLC 100
• QEP ENERGY COMPANY 99
• BURLINGTON RESOURCES OIL & GAS COMPANY 97
• KOCH INDUSTRIES, INC. 97
• CHEVRON USA, INC. 95
• TENNECO OIL CO. 95
• HESS CORPORATION 91
• TRUE OIL LLC 89
• MCOR OIL & GAS CORP. 88
• KISSINGER PETROLEUM CORP. 86
• CRESCENT POINT ENERGY U.S. CORP. 85
• APACHE CORPORATION 84
• LUFF EXPLORATION COMPANY 84
• LIME ROCK RESOURCES V-A, L.P. 83
• INEXCO OIL CO. 82
• W. H. HUNT TRUST ESTATE 78
• ARMSTRONG OPERATING, INC. 76
• CARDINAL DRILLING CO. 71
• CORNERSTONE NATURAL RESOURCES LLC 70
• D90 Energy, LLC 69
• PENNZOIL CO. 69
• SUN EXPLORATION & PRODUCTION CO. 68
• CALVERT DRILLING, INC. 67
• BERENERGY CORPORATION 66
• INTERNATIONAL NUCLEAR CORP. 66
• SAMSON RESOURCES COMPANY 66
• EARL SCHWARTZ CO. 64
• SPOTTED HAWK DEVELOPMENT, LLC 64
• RIDGE OIL & GAS, LLC DBA RIDGE ENERGY 63
• WARD-WILLISTON COMPANY 63
• CHANDLER & ASSOCIATES, INC. 62
• NORTHERN RESOURCES, INC. 62
• OXY USA INC. 62
• COASTAL OIL & GAS CORPORATION 61
• FARMERS UNION CENTRAL EXCHANGE, INC. 61
• MERIDIAN OIL, INC. 61
• PROSPER ENERGY CORP. 61
• FIDELITY EXPLORATION & PRODUCTION COMPANY 58
• I. J. WILHITE 58
• DEPCO, INC. 57
• STATOIL OIL & GAS LP 57
• Phoenix Petroleum, LLC 54
• RIM OPERATING, INC. 54
• PETROLEUM, INC. 53
• TIGER OIL COMPANY 51
• PATRICK PETROLEUM CO. 49
• BALLANTYNE OIL, LLC 48
• NEWFIELD PRODUCTION COMPANY 48
• PAN AMERICAN PETROLEUM CORP. 48
• UNION OIL COMPANY OF CALIFORNIA 47
• ABRAXAS PETROLEUM CORP. 45
• ANSCHUTZ OIL CO. 45
• CENEX 45
• GRANITE CREEK ENERGY LLC 44
• LOUISIANA LAND & EXPLORATION CO. 44
• CONTINENTAL OIL CO. 43
• BTA OIL PRODUCERS, LLC 42
• KERR-MCGEE CORP. 42
• DIAMOND SHAMROCK EXPLORATION CO. 41
• FALCON MIDSTREAM SERVICES LLC 41
• JN EXPLORATION & PRODUCTION LIMITED PARTNERSHIP 41
• LADD PETROLEUM CORP. 41
• TRUE OIL CO. 40
• WESCO OPERATING, INC. 40
• DYNA RAY OIL & GAS COMPANY, INC. 39
• GOFOR OIL, INC. 39
• LIBERTY RESOURCES MANAGEMENT COMPANY, LLC 39
• T2 OPERATING CORPORATION 39
• WILLISTON INDUSTRIAL SUPPLY CORPORATION 38
• BWAB, INC. 37
• DAVIS OIL CO. 37
• FLYING J EXPLORATION & PRODUCTION, INC. 37
• SAMEDAN OIL CORPORATION 37
• WESTPORT OIL & GAS COMPANY, L.P. 37
• CALVERT EXPLORATION CO. 36
• PRIMA EXPLORATION, INC. 36
• STEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLC 36
• SUPERIOR OIL CO. 36
• SPRINGLINE OPERATING LLC 35
• Swanson Oil & Gas LLC 35
• TURTLE MOUNTAIN GAS & OIL, INC. 35
• DUNCAN ENERGY CO. 34
• GRAYSON MILL OPERATING, LLC 34
• ST MARY LAND & EXPLORATION COMPANY 34
• UNION TEXAS PETROLEUM CORP. 34
• GEORESOURCES, INC. 33
• GREAT AMERICAN ROYALTIES, INC. 33
• ANSCHUTZ EXPLORATION CORPORATION 32
• EXXON COMPANY, U.S.A. 32
• TERRA RESOURCES, INC. 32
• CARTER OIL CO. 31
• PRESIDIO EXPLORATION, INC. 31
• RESOURCE ENERGY CAN-AM LLC 31
• DUNCAN OIL, INC. 30
• GETTY OIL CO. 29
• GREAT AMERICAN EXPLORATION, INC. 29
• HRC OPERATING, LLC 29
• HYDRA SERVICES LLC 29
• PALO ALTO ENERGY, LLC 29
• ORYX ENERGY CO. 28
• ANADARKO PRODUCTION CO. 27
• BALLANTYNE OIL 27
• EDWARD MIKE DAVIS 27
• ENCORE OPERATING, L.P. 27
• LAMAR HUNT 27
• NORTHERN PUMP CO. 27
• PHILLIPS PETROLEUM COMPANY 27
• RESONANCE EXPLORATION (NORTH DAKOTA) LLC 27
• TRIANGLE USA PETROLEUM CORPORATION 27
• Tallgrass Water North Dakota, LLC 27
• WHITE BUTTE OIL OPERATIONS, LLC 27
• JOHN B. HAWLEY, JR. TRUST #1 26
• PACIFIC ENTERPRISES OIL COMPANY (USA) 26
• SELECT WATER SOLUTIONS, LLC 26
• CHALLENGER POINT ENERGY, LLC 25
• CHAMPLIN PETROLEUM CO. 25
• DON BILLS & ST. CLAIR 25
• ENTERPRISE ENERGY, INC. 25
• EOG (NEW MEXICO) INC. 25
• EQUITABLE RESOURCES ENERGY CO. 25
• MEDORA MINERALS, LLC 25
• NORTH AMERICAN ROYALTIES, INC. 25
• KENNEDY & MITCHELL, INC. 24
• P.O. & G. OPERATING, LLC 24
• SUNBEHM GAS, INC. 24
• ADOBE RESOURCES CORP. 23
• AXEM RESOURCES, INC. 23
• ELK HORN RESOURCES, LLC 23
• FLYING J OIL & GAS, INC. 23
• JERRY CHAMBERS EXPLORATION CO. 23
• SHELL WESTERN E&P 23
• BTA OIL PRODUCERS 22
• CAROLINE HUNT TRUST ESTATE 22
• CORINTHIAN EXPLORATION (USA) CORP 22
• H. L. HUNT 22
• JETTISON, INC. 22
• Murfin Drilling Company, Inc. 22
• PENNZOIL EXPLORATION & PRODUCTION CO. 22
• PETRO HARVESTER OPERATING COMPANY, LLC 22
• PLACID OIL CO. 22
• WILLIAM HERBERT HUNT 22
• WILLIS L. WALKER 22
• CALVERT DRILLING & PRODUCING CO. 21
• GENERAL ATLANTIC ENERGY CORP. 21
• HOME PETROLEUM CORP. 21
• HUNT ENERGY CORP. 21
• MILESTONE PETROLEUM, INC. 21
• OVINTIV USA INC. 21
• UNIVERSAL RESOURCES CORP. 21
• WACKER OIL, INC. 21
• ATLANTIC RICHFIELD COMPANY 20
• BAKKEN HUNTER, LLC 20
• BELCO PETROLEUM CORP. 20
• BURNETT ENERGY INC. 20
• CANTERRA PETROLEUM, INC. 20
• COLUMBIA GAS DEVELOPMENT CORP. 20
• Legacy Reserves Operating LP 20
• ROCKPORT ENERGY SOLUTIONS LLC 20
• SAGE ENERGY COMPANY 20
• THUNDERBIRD RESOURCES LP 20
• ARROWHEAD EXPLORATION CO. 19
• BALLARD PETROLEUM HOLDINGS, LLC 19
• CITIES SERVICE OIL CO. 19
• CLYDE W. JONES 19
• GREAT WESTERN DRILLING CO. 19
• HUNT PETROLEUM CORP. 19
• MESA PETROLEUM CO. 19
• MISSOURI BASIN WELL SERVICE, INC. 19
• MITCHELL ENERGY CORP. 19
• NANCE PETROLEUM CORPORATION 19
• RITTER, LABER & ASSOCIATES, INC. 19
• TOM JORDAN 19
• UPTON RESOURCES U.S.A. INC. 19
• WESTPORT OIL & GAS CO., INC. 19
• WISER OIL CO. 19
• GEOCHEMICAL SURVEYS 18
• HENRY HILL OIL SERVICES, LLC 18
• JOSEPH J. C. PAINE & ASSOCIATES 18
• MAR-WIN DEVELOPMENT CO. 18
• RALPH O. BROWN 18
• TRANSTEXAS GAS CORPORATION 18
• TXO PRODUCTION CORP. 18
• Valkyrie Operating, LLC 18
• ANSCHUTZ CORPORATION 17
• BASIC EARTH SCIENCE SYSTEMS, INC. 17
• BOB DENNIS 17
• CONDOR PETROLEUM, INC. 17
• DOME PETROLEUM CORP. 17
• HELMERICH & PAYNE, INC. 17
• SOHIO PETROLEUM COMPANY 17
• TEXOTA OIL CO. 17
• BASS ENTERPRISES PRODUCTION CO. 16
• BROOKS EXPLORATION, INC. 16
• CENTURY OIL & GAS CORP. 16
• COLUMBUS ENERGY CORP. 16
• KAISER-FRANCIS OIL COMPANY 16
• LONG PETROLEUM, INC. 16
• MCKENZIE ENERGY PARTNERS, LLC 16
• MISSOURI RIVER RESOURCES ND, LLC 16
• PAUL RANKIN INC. 16
• SKELLY OIL CO. 16
• SOUTH RANCH OIL COMPANY, INC. 16
• DEKALB ENERGY CO. 15
• EMERALD OIL, INC 15
• ENRON OIL & GAS CO. 15
• PRIDE ENERGY, AN OKLAHOMA GENERAL PARTNERSHIP 15
• RANGER OIL CO. 15
• TEXAS CRUDE ENERGY, INC. 15
• WHITE OWL ENERGY SERVICES (US) INC. 15
• BALCRON OIL CO. 14
• BROSCHAT ENGINEERING & MANAGEMENT SERVICES, INC. 14
• CHAMBERS & KENNEDY 14
• CLARION RESOURCES, INC. 14
• DONALD C. SLAWSON 14
• E. L. K. OIL COMPANY 14
• ENERGETICS OPERATING CO. 14
• FRAM OPERATING LLC 14
• HARPER OIL CO. 14
• JACK M. JOHNSTON DRILLING CO. 14
• M & J OIL CO. 14
• MBI OIL & GAS, LLC 14
• MERCURY RESOURCES LLC 14
• MOSBACHER PRODUCTION CO. 14
• NORTH CENTRAL OIL CORP. 14
• PUMA PETROLEUM CO. 14
• SAMUEL GARY JR. & ASSOCIATES, INC. 14
• SIGNAL DRILLING & EXPLORATION, INC. 14
• SIMCOX OIL CO. 14
• STEPHENS ENERGY COMPANY LLC 14
• TEXAKOTA, INC. 14
• TEXAS GAS EXPLORATION CORP. 14
• TEXAS OIL & GAS CORP. 14
• BROWNLIE, WALLACE, ARMSTRONG, BANDER 13
• G3 OPERATING, LLC 13
• GAS PRODUCING ENTERPRISES, INC. 13
• HESS WATER SERVICES LLC 13
• MAXUS EXPLORATION CO. 13
• MISSOURI RIVER ROYALTY CORPORATION 13
• NORTH RANGE RESOURCES, LLC 13
• PETROLEUM CORPORATION OF AMERICA 13
• POGO PRODUCING CO. 13
• SAMSON OIL AND GAS USA, INC 13
• SINCLAIR OIL & GAS COMPANY 13
• THE TEXAS CO. 13
• VAUGHN PETROLEUM, INC. 13
• WARD-WILLISTON DRILLING CO. 13
• ZARGON OIL (ND) INC. 13
• BERCO RESOURCES, LLC 12
• BHP PETROLEUM (AMERICAS) INC. 12
• CARDINAL & GREAT AMERICAN EXPLORATION 12
• DAKOTA CRUDE, INC. 12
• FOREST OIL CORPORATION 12
• GENERAL CRUDE OIL CO. 12
• MARTIN OIL CO. 12
• MONSANTO CHEMICAL CO. 12
• MONTANA-DAKOTA UTILITIES CO. 12
• MORAN EXPLORATION, INC. 12
• NORTHWESTERN PRODUCTION LLC 12
• PETRO-LEWIS CORP. 12
• SOUTHPORT EXPLORATION, INC. 12
• STATES OIL CO. 12
• SUMMIT RESOURCES, INC. 12
• SUPRON ENERGY CORP. 12
• TOM F. MARSH 12
• TOTAL PETROLEUM, INC. 12
• UNITED NATURAL RESOURCES CORP. 12
• VAST OPERATIONS, LLC 12
• WHITING PETROLEUM CORPORATION 12
• WINDRIDGE OPERATING LLC 12
• AL-AQUITAINE EXPLORATION, LTD. 11
• ANSCHUTZ DRILLING CO. 11
• CONSOLIDATED OIL & GAS, INC. 11
• EXETER EXPLORATION CO. 11
• GEOLINEAR CO. 11
• HELIS OIL & GAS COMPANY, L.L.C. 11
• IRON OIL OPERATING, LLC 11
• KODIAK OIL & GAS (USA) INC. 11
• KRAKEN DEVELOPMENT III, LLC 11
• KYE TROUT, JR. 11
• LION OIL COMPANY 11
• MARSHALL & WINSTON, INC. 11
• MOBIL OIL CORP. 11
• NEXEN OIL AND GAS U.S.A. INC. 11
• PDC CORPORATION 11
• PLAZA OIL & GAS LTD. 11
• RAINBOW RESOURCES, INC. 11
• RAYMOND T. DUNCAN 11
• S. D. JOHNSON DRILLING CO. 11
• SOUTHERN UNION PRODUCTION CO. 11
• TIPPERARY OIL & GAS CORPORATION 11
• TOM BROWN, INC. 11
• TOP OPERATING COMPANY 11
• TRACKER RESOURCE DEVELOPMENT II, LLC 11
• VERN O. LUND 11
• BLACK HAWK RESOURCES CORP. 10
• COMDISCO EXPLORATION, INC. 10
• COTTON PETROLEUM CORP. 10
• GRAHAM ROYALTY, LTD. 10
• GRENORA PARTNERS, L.C. 10
• HANNA SWD, LLC 10
• HONDO OIL & GAS CO. 10
• HOUSTON OIL & MINERALS CORP. 10
• LOWELL J. WILLIAMSON, INC. 10
• OMIMEX PETROLEUM, INC. 10
• PEL-TEX, INC. & CONOCO 10
• RANCH OIL COMPANY 10
• SMOKEY OIL COMPANY, INC. 10
• SOUTHLAND ROYALTY CO. 10
• SPARROW OIL & GAS LLC 10
• THE EXPLORATION COMPANY 10
• TOBACCO GARDEN SWD LLC 10
• TRI-W CORP. 10
• ACP ENERGY CORPORATION 9
• AEON ENERGY CORP. 9
• ANSBRO PETROLEUM COMPANY, LLC 9
• AREX CORP. 9
• BARBARA FASKEN 9
• BRIGHAM OIL & GAS, L.P. 9
• BRITISH-AMERICAN OIL PRODUCING CO. 9
• CARDINAL & LUBAR 9
• CHAPMAN EXPLORATION, INC. 9
• CHOCTAW II OIL & GAS, LTD. 9
• CITIES SERVICE OIL & GAS CORP. 9
• CRYSTAL EXPLORATION & PRODUCTION CO. 9
• DALLEA PETROLEUM CORP. 9
• DEPCO, INC. & TEXAS PACIFIC OIL CO. 9
• EARL SCHWARTZ 9
• ENDURO OPERATING, LLC 9
• EP OPERATING CO. 9
• FH PETROLEUM CORP. 9
• FIVE STATES OPERATING COMPANY, LLC 9
• FORTSON OIL COMPANY 9
• FUNDAMENTAL OIL CORP. 9
• GENERAL AMERICAN OIL COMPANY OF TEXAS 9
• GRACE PETROLEUM CORP. 9
• H. HANSON OIL SYNDICATE 9
• I. J. WILHITE & STAR DRILLING, INC. 9
• J. M. HUBER CORP. 9
• JOHN L. COX 9
• KOCH EXPLORATION CO. 9
• LANDTECH ENTERPRISES, LLC 9
• MCALESTER FUEL CO. 9
• MCMORAN EXPLORATION CO. 9
• NINE POINT ENERGY, LLC 9
• NORTHWEST EXPLORATION CO. 9
• PROVEN PETROLEUM, INC. 9
• RUSSELL DRILLING COMPANY, INC. 9
• TARGET OIL CO. 9
• TXP OPERATING CO. 9
• WAINOCO, INC. 9
• WGO RESOURCES, LLC 9
• WILLIAM HERBERT HUNT TRUST ESTATE 9
• ALTURAS ENERGY, LLC 8
• AMPOLEX (TEXAS), INC. 8
• ARGENT MIDSTREAM SOLUTIONS, LLC 8
• BARRETT RESOURCES CORP. 8
• BERCO RESOURCES, INC. 8
• CALIBER MIDSTREAM NORTH DAKOTA LLC 8
• CELERON OIL & GAS CO. 8
• DABROS PROPERTIES, INC. 8
• DISCOVERY GEOSERVICES CORP. 8
• E. C. JOHNSTON, JR. 8
• EQUINOR ENERGY LP 8
• HEBERDEV OPERATING, LLC 8
• HNG OIL CO. 8
• KELSCH AND DONLIN, INC. 8
• LEAR PETROLEUM EXPLORATION, INC. 8
• MIAMI OIL PRODUCERS, INC. 8
• McRae & Henry, Ltd. 8
• NEW MILLENNIUM RESOURCES, INC. 8
• NORTHWEST OIL DRILLING CO. 8
• NUCORP ENERGY, INC. 8
• PANTERRA PETROLEUM 8
• PETROGULF CORPORATION 8
• PINTAIL PETROLEUM INC. 8
• PUBCO PETROLEUM CORP. 8
• RAGNAR EXPLORATION, LLC 8
• RITCHIE EXPLORATION, INC. 8
• RONALD M. SANNES 8
• SECURE WASTE INFRASTRUCTURE USA LLC 8
• THOMAS A. HAUGEN OPERATING CO. 8
• TIDDENS PETROLEUM CORP. 8
• TUTHILL & BARBEE 8
• WESSELY ENERGY CO. 8
• APACHE OIL CORP. 7
• ARROW WATER, LLC 7
• AVALON CORP. 7
• BELNORTH PETROLEUM CORP. 7
• BLUESKY OIL & GAS INC. 7
• CLINE PRODUCTION COMPANY 7
• CLINTON OIL CO. 7
• CLYDE G. KISSINGER 7
• COMPASS SWD, LLC 7
• CONOCOPHILLIPS COMPANY 7
• DAKOTA FLUID SOLUTIONS, LLC 7
• FRED GOODSTEIN 7
• GADECO, LLC 7
• GALAXY OIL CO. 7
• GEMINI CORP. 7
• GOLDEN & LAND OIL CO. 7
• GOLDEN EYE RESOURCES, LLC 7
• HAWN BROTHERS & HANOVER MANAGEMENT CO. 7
• HUSKY OIL CO. 7
• I. J. WILHITE-GLEN BURTON 7
• LUBAR OIL CO. 7
• MOUNTAIN DIVIDE, LLC 7
• PRENALTA CORP. 7
• PRIMARY FUELS, INC. 7
• SOCONY-VACUUM OIL COMPANY, INC. 7
• SOUTHERN UNION EXPLORATION CO. 7
• STAGHORN ENERGY, LLC 7
• STANOLIND OIL & GAS CO. 7
• TIBER RESOURCES, INC. 7
• TYREX OIL CO. 7
• VIERSEN & COCHRAN 7
• WHITESTONE CORP. 7
• WILLIAMS EXPLORATION CO. 7
• WYOMING RESOURCES CORPORATION 7
• ALPAR RESOURCES, INC. 6
• AMAREX, INC. 6
• ANDERSON PETROLEUM, INC. 6
• ASHLAND OIL, INC. 6
• AZTEC OIL & GAS CO. 6
• BEHM ENERGY, INC. 6
• BENNETT SWD, LLC 6
• BURNETT OIL COMPANY, INC. 6
• CALVERT DRILLING & ANMAR OIL & GAS CORP. 6
• CAMERLAND CARDINAL CORP. 6
• CAMWEST LIMITED PARTNERSHIP 6
• CIRQUE RESOURCES, LP 6
• CNG PRODUCING CO. 6
• DAKOTA GASIFICATION COMPANY 6
• DEKALB AGRICULTURAL ASSOCIATION, INC. 6
• DON BILLS 6
• DORCHESTER EXPLORATION, INC. 6
• DOUBLE AA OIL, L.L.C. 6
• ENERGY EQUITY COMPANY 6
• ENSERCH EXPLORATION, INC. 6
• ENSTAR CORP. 6
• FULTON PRODUCING CO. 6
• GYPSY HIGHVIEW GATHERING SYSTEM, INC. 6
• H&R WELL SERVICES, INC. 6
• HEADINGTON OIL COMPANY LLC 6
• I. J. WILHITE & SIMCOX OIL CO. 6
• KELDON OIL CO. 6
• KERR-MCGEE OIL & GAS ONSHORE LP 6
• LEACH AND KELSCH 6
• LELAND OIL & GAS, LLC 6
• LOMAX EXPLORATION CO. 6
• LYDA HUNT-HERBERT TRUSTS 6
• MIDROC OIL CORP. 6
• MIDWEST OIL CORP. 6
• MULE CREEK OIL COMPANY, INC. 6
• Minnkota Power Cooperative, Inc. 6
• NORTH PLAINS ENERGY, LLC 6
• NYVATEX OIL CORP. 6
• OIL DEVELOPMENT COMPANY OF TEXAS 6
• OIL FOR AMERICA EXPLORATION, LLC 6
• PALMER OIL CO. 6
• PETROTEX MANAGEMENT CO. 6
• PIONEER RESOURCES (N.D.) INC. 6
• Rocky Top Energy, LLC 6
• SENTINEL OPERATING, INC. 6
• SHAR-ALAN OIL CORP. 6
• STRIKE OIL INC 6
• T. I. LEBEN & ASSOCIATES 6
• TEXAS CRUDE OIL CO. 6
• TRAVERSE OIL CO. 6
• AMINOIL USA, INC. 5
• ASHLAND EXPLORATION, INC. 5
• BOW PETROLEUM, INC. OF COLORADO 5
• C12 ENERGY: NORTH DAKOTA LLC 5
• CARDINAL & GREAT PLAINS & KAUFMAN 5
• CARLSON OIL INC. 5
• CENERGY EXPLORATION CO. 5
• CHALLENGER MINERALS, INC. 5
• CIMAREX ENERGY CO. 5
• CLEARY PETROLEUM CORP. 5
• COUGAR ENERGY DEVELOPMENT, INC. 5
• DAHL SWD, LLC 5
• E. C. JOHNSTON, INC. 5
• EARTHSTONE OPERATING, LLC 5
• ECHO OIL CORP. 5
• EMPIRE STATE OIL CO. 5
• ENERGY & ENVIRONMENTAL RESEARCH CENTER 5
• ENERGY RESOURCES OF NORTH DAKOTA, INC. 5
• FILCO INCORPORATED 5
• FLORIDA EXPLORATION CO. 5
• GEAR PETROLEUM COMPANY, INC. 5
• GERMANY & CARDINAL DRILLING CO. 5
• Grizzly Operating, LLC 5
• H. MACK COX 5
• HART EXPLORATION & PRODUCTION CO. 5
• HAWN BROTHERS 5
• HILLIARD OIL & GAS, INC. 5
• HPC, INC. 5
• HUNT INDUSTRIES, LTD. 5
• IMPERIAL OIL OF NORTH DAKOTA, INC. 5
• INTOIL, INC. 5
• INVESTORS OIL, INC. 5
• JACK M. JOHNSTON DRILLING CORP. 5
• JAMES E. SCHULTE 5
• JORDAN EXPLORATION COMPANY, L.L.C. 5
• JUNIPER PETROLEUM CORP. 5
• KEBA OIL & GAS CO. 5
• KEWANEE OIL CO. 5
• KINSON RESOURCES, INC. 5
• LARIO OIL & GAS COMPANY 5
• MALLON OIL CO. 5
• MAPCO PRODUCTION CO. 5
• MEPNA 5
• MERIDIAN OIL PRODUCTION, INC. 5
• MORGAN ENERGY CORP. 5
• MOUNTAIN MINERALS CO. 5
• NATIONAL COOPERATIVE REFINERY ASSOCIATION 5
• NORTH AMERICAN RESOURCES CO. 5
• NORTHWESTERN REFINING CO. 5
• NORTON FRICKEY 5
• OCEAN ENERGY, INC. 5
• OWEN DRILLING CO. 5
• P & P PRODUCING, INC. 5
• PEL-TEX, INC. 5
• PETRO-HUNT CORP. 5
• PETROCORP, INC. 5
• PIONEER PRODUCTION CORP. 5
• QUINTANA PETROLEUM CORP. 5
• READING & BATES PETROLEUM CO. 5
• ROSEWOOD CORP. 5
• SANTA FE ENERGY CO. 5
• SOUTH HEART COMPANY 5
• Select Agua Libre Midstream, LLC 5
• TOM JORDAN & CAPPY RICKS 5
• TOTAL MINATOME CORP. 5
• VANDERBILT RESOURCES CORP. 5
• VECTA OIL & GAS, LTD. 5
• WESTCOAST OIL & GAS CORP. 5
• WINONA OIL COMPANY OF DELAWARE 5
• WOODS PETROLEUM CORP. 5
• ZINKE & TRUMBO, INC. 5
• A & A ROBILLARD CO. 4
• AGATE PETROLEUM, INC. 4
• AMERADA PETROLEUM CORP. 4
• ANCHOR BAY CORP. 4
• ANDERSEN OIL CO. 4
• ANSCHUTZ CORP. & WESTCOAST OIL & GAS 4
• APEXCO, INC. 4
• AUSTRAL OIL COMPANY, INC. 4
• B & B OIL FIELD SERVICES, INC. 4
• BRALORNE INTERNATIONAL, INC. 4
• BURLINGTON NORTHERN, INC. 4
• CALVERT DRILLING CO. 4
• CARDINAL & HACIENDA 4
• CARDINAL PETROLEUM CO. & OIL CAPITOL CORP. 4
• CENEX HARVEST STATES COOPERATIVES 4
• CENTAUR OIL CO. 4
• CLEARLY PETROLEUM, LLC 4
• CROSBY WATER SYSTEMS LLC 4
• CURTIS MILLER D/B/A MILLER PETROLEUM, INC. 4
• DAKOTA OIL CO. 4
• DYCO PETROLEUM CORP. 4
• EDWARD MIKE DAVIS, L.L.C. 4
• EXXONMOBIL CORPORATION 4
• FAIRBANKS OIL COMPANY 4
• GENESIS ST OPERATING LLC 4
• GREAT PLAINS ROYALTY CORP. 4
• GRUY MANAGEMENT SERVICE CO. 4
• H. A. CHAPMAN 4
• HUMBLE OIL & REFINING CO. 4
• IHD LIQUIDS MANAGEMENT LLC 4
• J. M. JOHNSTON 4
• K T ENTERPRISES, LLC 4
• LLOYD H. SMITH 4
• LODIN, LLC 4
• LOS NIETOS OIL CO. 4
• MARLO OPERATING COMPANY, LLC 4
• NATIONAL BULK CARRIERS, INC. 4
• NATIONAL OIL CO. 4
• NORTHERN NATURAL GAS PRODUCING CO. 4
• OHIO OIL CO. 4
• ONYX OIL COMPANY, LLC 4
• P & M PETROLEUM MANAGEMENT 4
• PALMER OIL & GAS CO. 4
• PETROSEARCH OPERATING COMPANY, L.L.C. 4
• PHILLIP D. ARMSTRONG 4
• PURE OIL CO. 4
• RESOURCES INVESTMENT CORP. 4
• RJL OIL & GAS, INC. 4
• SHAKESPEARE OIL COMPANY, INC. 4
• SONAT EXPLORATION CO. 4
• SRL EXPLORATION INC. 4
• ST OIL COMPANY 4
• ST. CROIX OPERATING, INC 4
• STEKOLL OIL & GAS, LTD. 4
• STEWART PETROLEUM CO. 4
• STRATA-X, INC. 4
• SUNRAY DX OIL CO. 4
• TENNESSEE GAS TRANSMISSION CO. 4
• TEXACO OILS, INC. 4
• TEXAS EASTERN SKYLINE OIL CO. 4
• TEXAS PACIFIC OIL COMPANY, INC. 4
• THERMAL EXPLORATION, INC. 4
• TITAN ENERGY, LLC 4
• TOLCO OIL & GAS 4
• TRANSCO EXPLORATION CO. 4
• TRANSCONTINENTAL OIL CORP. 4
• TRITON OIL CO. 4
• UV INDUSTRIES, INC. 4
• VANGUARD OPERATING LLC 4
• WESSELY EXPLORATION CO. 4
• WESTECH ENERGY CORPORATION 4
• WILLISTON TANK RENTAL, INC. 4
• ALASKA OIL & MINERALS CORP. 3
• ALBRITTON RESOURCES, INC. 3
• AMAX OIL & GAS, INC. 3
• AMERICAN HUNTER EXPLORATION LTD. 3
• AMERICAN NATURAL GAS PRODUCTION CO. 3
• ANADARKO PETROLEUM CORP. 3
• AOP OPERATING CO. 3
• ARTHUR V. SEAY, JR. 3
• ASPEN ENERGY GROUP, INC. 3
• ASTRAL OIL COMPANY, L.L.C. 3
• BASIN PETROLEUM SERVICES, INC. 3
• BAYTEX ENERGY USA LTD 3
• BENNETT EXPLORATION & PRODUCTION CO. 3
• BILL BARRETT CORPORATION 3
• BOMAC EXPLORATION CO. 3
• BONRAY ENERGY CORP. 3
• BPI-BOH, LLC 3
• BRAVO PRODUCING CO. 3
• BRENT EXPLORATION, INC. 3
• BRIDGER ENERGY ASSOCIATES 3
• CABOT PETROLEUM CORP. 3
• CALVERT DRILLING & STRATIGRAPHIC OIL 3
• CARDINAL PETROLEUM & STRATIGRAPHIC OIL 3
• CARDINAL PETROLEUM CO. & KENNETH D. LUFF 3
• CHANDLER ENERGY, LLC 3
• CHANDLER-SIMPSON, INC. 3
• CITI OIL, INC. 3
• CLYDE W. JONES & NORTH STAR PETROLEUM CO. 3
• CODA ENERGY, INC. 3
• COLORADO OIL & GAS CORP. 3
• COLT RESOURCES CORPORATION 3
• CONQUEST EXPLORATION CO. 3
• COX OIL & GAS, INC. 3
• CROSS TIMBERS OPERATING CO. 3
• CROWN CENTRAL PETROLEUM CORP. 3
• D.C. DUDLEY & ASSOCIATES 3
• DAMSON OIL CORP. 3
• DAVID H. ARRINGTON OIL & GAS, INC. 3
• DEEP CREEK ADVENTURES, CO. 3
• DEVON ENERGY PRODUCTION COMPANY, L.P. 3
• DIVERSIFIED RESOURCES, LTD. 3
• DON E. BECKERT 3
• DOUBLE EAGLE PETROLEUM & MINING CO. 3
• DRAWINGS, LLC 3
• EASON OIL CO. 3
• ELF-AQUITAINE OIL & GAS 3
• ELMER B. MEIERS 3
• ENERGY MINERALS CORP. 3
• ENERGY OPERATING COMPANY, INC. 3
• EOG (OKLAHOMA) INC. 3
• EQUITY OIL COMPANY 3
• ESTATE OF WM. G. HELIS 3
• ETERNAL ENERGY CORPORATION 3
• EXPLORATION CO. 3
• FARMLAND INTERNATIONAL ENERGY CO. 3
• FLATIRONS RESOURCES LLC 3
• FOX OPERATING COMPANY 3
• FREEDOM ENERGY OPERATING, LLC 3
• GALAXY OIL 3
• GENERAL ATLAS CARBON CO. 3
• GLG ENERGY, L.P. 3
• GPC CORP. 3
• GRIFFON & ASSOCIATES, L.L.C. 3
• HALLWOOD PETROLEUM, INC. 3
• I. J. WILHITE-CLYDE W. JONES 3
• I. J. WILHITE-E.L.K. OIL CO. 3
• J-W OPERATING CO. 3
• JACK ROUSE 3
• JED OIL (USA) INC. 3
• K & E PETROLEUM, INC. 3
• KENAI OIL & GAS, INC. 3
• KEY ENERGY SERVICES, LLC 3
• KHOIL DAKOTA OPERATING, LLC 3
• KOCH EXPLORATION COMPANY, LLC 3
• LA HABANA CORP. 3
• LEEDE OIL & GAS, INC. 3
• LONE STAR PRODUCING CO. 3
• LYLE O. GERMUNDSON 3
• MAIN ENERGY, INC. 3
• MANCAL RESOURCES CORPORATION 3
• MANN OIL COMPANY, LLC 3
• MARSHA AZAR 3
• MAXBASS NATURAL GAS CO. 3
• MESA OPERATING LIMITED PARTNERSHIP 3
• MOLE OPERATING COMPANY, INC. 3
• MONDAK MIDSTREAM LLC 3
• NERDLIHC COMPANY, INC. 3
• NEW HORIZON RESOURCES LLC 3
• NP RESOURCES, LLC 3
• Nordstrand Engineering, Inc. 3
• OIL RESOURCES, INC. 3
• PETRO-SENTINEL LLC 3
• PINTAIL PETROLEUM, LTD. 3
• POLUMBUS PETROLEUM CORP. 3
• POWDER RIVER OIL CO. 3
• PROSPECTIVE INVESTMENT & TRADING CO., LTD. 3
• RME PETROLEUM COMPANY 3
• ROEMER OIL CO. 3
• RYAN EXPLORATION, INC. 3
• SAGEBRUSH RESOURCES, LLC 3
• SAKAKAWEA VENTURES, LLC 3
• SHELL ONSHORE VENTURES INC. 3
• SOUTHWESTERN ENERGY PRODUCTION CO. 3
• SOUTHWESTERN PRODUCTION CORP. 3
• SPECIALIZED TECHNOLOGICAL THREADING, INC., 3
• STEARNS OIL COMPANY LLC 3
• STRATIGRAPHIC OIL COMPANY, INC. 3
• STUARCO OIL COMPANY, INC. 3
• SUMMIT CARBON STORAGE #1, LLC 3
• SUMMIT CARBON STORAGE #3, LLC 3
• SUNCOR ENERGY (NATURAL GAS) AMERICA INC. 3
• SUNDANCE OIL CO. 3
• SUNRISE ENTERPRISES, INC. 3
• Summit Carbon Storage #2, LLC 3
• TEXAS AMERICAN OIL CORP. 3
• TEXAS INTERNATIONAL OIL COMPANY, INC. 3
• TIMBERLINE PRODUCTION COMPANY, LLC 3
• TITAN OIL, INC. 3
• TURNER OIL CO. 3
• U.S. SMELTING REFINING & MINING CO. 3
• URAN SWD, LLC 3
• WELTER CONSULTING, INC. 3
• WESTERN NATURAL GAS CO. 3
• WINDSOR ENERGY GROUP, L.L.C. 3
• WOLF EXPLORATION CO. 3
• ZACH BROOKS DRILLING CO. 3
• ZOLLER - DANNEBERG - LADD - CHANDLER 3
• A. J. HODGES INDUSTRIES, INC. 2
• ALATI ARNEGARD LLC 2
• ALLIANCE RESOURCES INC. 2
• AMAX PETROLEUM CORP. 2
• AMERICAN EAGLE ENERGY CORPORATION 2
• ANADARKO E&P ONSHORE LLC 2
• ANDEAVOR FIELD SERVICES LLC 2
• APCO OIL CORP. 2
• AQUA TERRA WATER MANAGEMENT USA, LLC 2
• ARGONAUT ENERGY CORP. 2
• ASAMERA OIL (U.S.) INC. 2
• ASHLAND OIL & REFINING CO. 2
• ATLANTIC REFINING COMPANY 2
• BARRON KIDD-BALLANTYNE BROTHERS 2
• BARRON KIDD-GREAT AMERICAN EXPLORATION 2
• BARUCH FOSTER CORP. 2
• BAY ROCK OPERATING CO. 2
• BEARTOOTH OIL & GAS COMPANY 2
• BEDFORD RESOURCES, INC. 2
• BELCO PETROLEUM NORTH AMERICA, INC. 2
• BIG SKY WELL SERVICE, INC. 2
• BLACK GOLD ENERGY RESOURCE DEVELOPMENT, LLC 2
• BLUE FLINT SEQUESTER COMPANY, LLC 2
• BOSQUE DISPOSAL SYSTEMS, LLC 2
• BRECK OPERATING CORP. 2
• BULLROCK LLC 2
• Bowline Energy LLC 2
• C & K PETROLEUM, INC. 2
• C ENERGY, INC. 2
• C. LEE MUELLER 2
• CAMERLAND CARDINAL CORP. & REX BAKER 2
• CANADIAN-DAKOTA & SASTEXOIL & GAS 2
• CARDINAL & BEACON RESOURCES CORP. 2
• CARDINAL & KAUFMAN 2
• CARDINAL DRILLING & ST. CROIX EXPLORATION 2
• CARDINAL DRILLING CO. & J.L. MCLAUGHLIN 2
• CELSIUS ENERGY CO. 2
• CENTRAL LEDUC OILS, INC. 2
• CHACO ENERGY COMPANY 2
• CHAMPLIN REFINING CO. 2
• CHAPARRAL ENERGY, L.L.C. 2
• CHARTERHALL AMERICA, INC. 2
• CHIEFTAIN INTERNATIONAL, INC. 2
• CHRISTMANN ENERGY CORP. 2
• CLYDE W. JONES & ALPINE OIL CO. 2
• CLYDE W. JONES & JACK ROUSE 2
• COQUINA OIL CORP. 2
• CORE 54 OIL AND GAS, LLC 2
• CTI WELL SERVICE, LLC 2
• CURTIS MILLER D/B/A MILLER OIL CO. 2
• DAKOTA SALT & CHEMICAL CO. 2
• DALCO EXPLORATION, INC. 2
• DENVER-ALASKA OIL CO. 2
• DES, LLC 2
• E.L.K. OIL CO.-JOHN C. KINARD 2
• EAGLE OIL CO. 2
• EARTHSTONE ENERGY, INC. 2
• ENCANA OIL & GAS (USA) INC. 2
• ENDEAVOR ENERGY RESOURCES, L.P. 2
• ENERGY SEARCH & DEVELOPMENT, INC. 2
• EPEX, INC. 2
• F. B. DOWNING, SR. 2
• F. H. RHODES 2
• FILON EXPLORATION CORP. 2
• FLADELAND 1 SWD LLC 2
• FLARE ENERGY CORP. 2
• GERMUNDSON, LYLE O. 2
• GLACIER ENERGY, INC. 2
• GLEN L. WILSON 2
• GRUSS PETROLEUM MANAGEMENT, INC. 2
• GULFLAND, INC. 2
• H. T. SWENSON 2
• HANOVER MANAGEMENT CO. 2
• HANSON OIL CORP. 2
• HARDY SALT CO. 2
• HESS TIOGA GAS PLANT LLC 2
• HLM DRILLING CO. 2
• HRUBETZ OIL CO. 2
• HUNT PETROLEUM (AEC), INC. 2
• HUNTFORD RESOURCES CORPORATION 2
• I. J. WILHITE & NORTH AMERICAN ROYALTIES 2
• I. J. WILHITE-JOE N. CHAMPLIN 2
• ICG PETROLEUMS, INC. 2
• INLAND OIL & GAS CORP. 2
• INTERNATIONAL ENERGY CO. 2
• IVAN GOHEEN 2
• JACK ROUSE OIL PROPERTIES 2
• JACK ROUSE-DICK ZAJIC 2
• JAMES H. SNOWDEN 2
• JAYHAWK ENERGY, INC. 2
• JENEX OPERATING COMPANY 2
• JOHNSON OIL 2
• JUNIPER OIL & MINING CO. 2
• KERR-MCGEE OIL INDUSTRIES, INC. 2
• KIMBARK OIL & GAS CO. 2
• MALLARD PETROLEUM, INC. 2
• MID-CON ENERGY OPERATING, LLC 2
• MIDWEST EXPLORATION CORP. 2
• MILLER OIL CO. 2
• MOORE & ASSOCIATES 2
• MOUSE RIVER PARTNERSHIP 2
• MURRY, MONSON, & MURRY 2
• Moonracer Resources LLC 2
• NATOMAS NORTH AMERICA, INC. 2
• NBB OIL & GAS PARTNERS (U.S.A.) 2
• NCND MINOT PARTNERSHIP 2
• NCND MINOT PROJECT '75 2
• NOAH ENERGY INC. 2
• NORRIS OIL CO. 2
• NORTH PLAINS PETROLEUM, INC. 2
• Neset Consulting Service, Inc. 2
• OCCIDENTAL PETROLEUM CORP. 2
• OIL EXPLORATION CO. 2
• OPEN RANGE INC 2
• ORBIT OIL & GAS, INC. 2
• ORION ENERGY CORP. 2
• OXY PETROLEUM, INC. 2
• P & M PETROLEUM MANAGEMENT, L.L.C. 2
• PANTHER OIL PROPERTIES, INC. 2
• PARKWAY PETROLEUM, INC. 2
• PENN VIRGINIA OIL & GAS, LP 2
• PENTAD RESOURCES, INC. 2
• PETROLEUM EQUITIES CORP. 2
• PETROLEUM MANAGEMENT CORP. & GEMINI CORP. 2
• POLAR INDUSTRIES, INC. 2
• PRINCETON ENERGY CORP. 2
• PRODUCERS DISPOSAL SERVICES 2
• PRONGHORN PETROLEUM CORP. 2
• PUMPCO LAND & EXPLORATION COMPANY, INC. 2
• QUANTERRA ALPHA LIMITED PARTNERSHIP 2
• R. C. WIPER 2
• RAM OIL COMPANY, INC. 2
• RED WILLOW GREAT PLAINS, LLC 2
• RENEGADE PETROLEUM (NORTH DAKOTA) LTD. 2
• RICHARDTON CCS, LLC 2
• RIGEL, INC. 2
• RM RESOURCES LLC 2
• ROBERT E. GILLON 2
• ROBERT G. LINDSAY 2
• ROBERT M. WATKINS ENGINEERING, INC. 2
• ROBINSON RESOURCE DEVELOPMENT CO., INC. 2
• ROONEY OPERATING CO. 2
• SCHULTZ & LINDSAY EQUIPMENT, INC. 2
• SEDALIA ENERGY, LLC 2
• SHENANDOAH OIL CORP. 2
• SIGNAL DRILLING COMPANY, INC. 2
• SIGNAL EXPLORATION, INC. 2
• SILVER OAK ENERGY, LLC 2
• SOGC, INC. 2
• SOLAR PETROLEUM, INC. 2
• SOLUTIONS ENERGY LLC 2
• SOTRANA-TEXAS CORP. 2
• SOUTHERN PETROLEUM EXPLORATION & CARDINAL 2
• SPARTAN DRILLING CO. 2
• STAR DRILLING, INC. 2
• STEPHENS & JOHNSON OPERATING CO. 2
• STEPHENS PRODUCTION COMPANY 2
• STRATA ENERGY RESOURCES CORP. 2
• T & T ENERGY, INC. 2
• T-BOC INC. 2
• T. M. EVANS 2
• TATEX ENERGY 2
• TERRA ENERGY CORP. 2
• TESORO REFINING AND MARKETING COMPANY 2
• THE 85 DISPOSAL, INC. 2
• THE ANSCHUTZ CORP. INC. 2
• THE SUPERIOR OIL CO. 2
• TIDAL RESOURCES (USA) INC. 2
• TIGER OIL CO. & LOVELESS PROPERTIES 2
• TOM JORDAN & BRUCE ALFSON 2
• TOM SCHWARTZ 2
• TRANS-TEXAS ENERGY, INC. 2
• TRAUGOTT DRILLING CO. 2
• TREND EXPLORATION, LTD. 2
• TRIGOOD OIL CO. 2
• UNIVERSITY OF NORTH DAKOTA EERC 2
• VERSA OPERATING LLC 2
• VISTA AMERICANA PETROLEUM INC. 2
• W. A. MONCRIEF 2
• W. C. PICKENS 2
• W. E. BAKKE OIL CO. 2
• WALTER A. OHMART, JR. 2
• WAPITI OPERATING, LLC 2
• WARREN PETROLEUM CORP. 2
• WENNER PETROLEUM CORP. 2
• WEST BAY EXPLORATION CO. 2
• WESTERN PRODUCTION CO. 2
• WESTERN WELLSITE SERVICES, LLC 2
• WETCH-ZACHMEIER-DISNEY DRILLING CO. 2
• WHITMAR EXPLORATION COMPANY 2
• WILLIAM C. KIRKWOOD 2
• WILLISTON STATE COLLEGE 2
• WM of North Dakota Energy Disposal Solutions, LLC 2
• YOUNGBLOOD & YOUNGBLOOD 2
• 007 TRANSPORTATION, LLC 1
• 3 TS SWD LLC 1
• 4J Well Service, Inc 1
• A & M OIL & GAS 1
• A. G. GOLDEN & PETROMARK MINERALS, INC. 1
• A. J. SCOTT 1
• ABL, LLC 1
• ACEITE ENERGY CORP. 1
• ACME OIL CORP. 1
• AJAX OIL CO. 1
• AL-AQUITAINE & GAS PRODUCING ENTERPRISES 1
• ALENCO OIL & GAS (ND) INC. 1
• ALLISON & WARING EXPLORATION, INC. 1
• ALPINE OIL COMPANY, INC. 1
• AMARILLO OIL CO. 1
• AMBER ENERGY (USA) INC. 1
• AMERICAN MUTUAL OIL CO. 1
• AMERICAN MUTUAL OIL CO. & AMBASSADOR OIL 1
• AMERICAN OIL & GAS, INC. 1
• ANDERMAN OPERATING COMPANY, INC. 1
• ANDRIKOPOULOS, A. G. 1
• ANSCHUTZ DRILLING & WESTERN NATURAL GAS 1
• ANSCHUTZ DRILLING CO. & RANGER OIL CO. 1
• ANSCHUTZ DRILLING CO. & SUN OIL CO. 1
• ANSCHUTZ OIL CO. & BANNER OIL CO. 1
• ANSCHUTZ OIL COMPANY, INC. & SUN OIL CO. 1
• ANSCHUTZ OIL COMPANY, LLC 1
• APC OPERATING PARTNERSHIP, LP 1
• APEX ENERGY, L.L.C. 1
• AREX CORP. & CARDINAL PETROLEUM CO. 1
• ARGO OIL CORP. 1
• ARGYLE ROYALTY CO. 1
• ARKLA EXPLORATION CO. 1
• ARMADILLO OIL COMPANY, INC. 1
• ARNOLD R. LUND 1
• ARROWHEAD EXPLORATION CO. & CALVERT 1
• ARSENAL ENERGY USA INC. 1
• AURELIA AREA DEVELOPMENT 1
• AVIARA ENERGY CORPORATION 1
• B. D. EVANS OIL CO. 1
• B. D. GILBERT 1
• BADGER OIL CO. 1
• BALEEN, L.L.C. 1
• BALLARD & ASSOCIATES, INC. 1
• BALLARD EXPLORATION COMPANY, INC. 1
• BARBARA JOSEPHSEN DBA JACK ROUSE OIL PROP. 1
• BARNETT DRILLING, INC. 1
• BARON OIL INC. 1
• BARRON KIDD 1
• BARRON KIDD & SIOUXLAND OILS 1
• BASIN SERVICE COMPANY, INC 1
• BAYTEX ENERGY USA LLC 1
• BEARD OIL CO. 1
• BELAIR EXPLORATION INC. 1
• BELCO DEVELOPMENT CORP. 1
• BERG SPECIALTY FLUIDS-HOLDING, LLC 1
• BERTSCH BROTHERS 1
• BIG DISPOSAL CARTWRIGHT, LLC 1
• BIG DISPOSAL IRGENS, LLC 1
• BIG VIKING OIL CO. 1
• BIGIRON OIL & GAS LLC 1
• BLACK EAGLE OPERATING COMPANY, INC. 1
• BLACK HAWK RESOURCES, LLC 1
• BLACKWOOD & NICHOLS CO. 1
• BLUEBONNET ENERGY CORPORATION 1
• BMG, INC. 1
• BOMAC EXPLORATION CO. & TEXAKOTA OIL CO. 1
• BRANDYWINE OIL CO. 1
• BRIDGER PETROLEUM CORP. 1
• BRINKERHOFF DRILLING CO. 1
• BRUCE ANDERSON 1
• BRUCE P. ALFSON 1
• BRUIN E&P OPERATING, LLC 1
• BRYON W. PAYNE 1
• BUCKHORN ENERGY SERVICES, LLC 1
• BUCKHORN SWD SOLUTIONS, LLC 1
• BUFFALO HILLS LLC 1
• BUTTES GAS & OIL CO. 1
• C. F. BRAUN & CO. 1
• C. W. WILLIAMS & O. D. CLARK 1
• CALCO, INC. & I. J. WILHITE 1
• CALVERT & BRIDGER 1
• CALVERT & SHAR ALAN OIL CO. 1
• CALVERT DRILLING & BUTTES GAS & OIL CO. 1
• CALVERT DRILLING & R. K. PETROLEUM CORP. 1
• CALVERT DRILLING & WOLF EXPLORATION CO. 1
• CALVERT EXPLORATION & LEONARD WARD 1
• CALVERT EXPLORATION-NORTHWESTERN REFINING 1
• CALVERT PETROLEUM CO. 1
• CAMBRIDGE PRODUCTION INC 1
• CAMPBELL PARTNERS, LTD. 1
• CANNONBALL OIL CO. 1
• CANYON ENERGY OPERATING, L.L.C. 1
• CARDINAL & DEEP ROCK CORP. 1
• CARDINAL & GARTH CAYLOR 1
• CARDINAL & GENERAL OIL CORP. 1
• CARDINAL & GREAT AMERICAN ROYALTIES 1
• CARDINAL & GREAT PLAINS ROYALTIES 1
• CARDINAL & J. M. HUBER 1
• CARDINAL & MONSANTO CHEMICAL CO. 1
• CARDINAL & SOUTHERN PETROLEUM EXPLORATION 1
• CARDINAL & TIGER OIL CO. 1
• CARDINAL & TOM BOLACK 1
• CARDINAL DRILLING & CORAL RESOURCES, INC. 1
• CARDINAL DRILLING & GREMLIN OIL CO. 1
• CARDINAL DRILLING CO. & GREMLIN OIL CO. 1
• CARDINAL PETROLEUM & BORSTAD & FITZMAURICE 1
• CARDINAL PETROLEUM & BUTTES OIL & GAS 1
• CARDINAL PETROLEUM & DAVID REED 1
• CARDINAL PETROLEUM & GEMINI CORP. & EXETER 1
• CARDINAL PETROLEUM & NAT'L BULK CARRIERS 1
• CARDINAL PETROLEUM & PROVIDENT RESOURCES 1
• CARDINAL PETROLEUM & REX H. BAKER 1
• CARDINAL PETROLEUM & SOUTHWEST MINERALS 1
• CARDINAL PETROLEUM & STATES OIL CO. 1
• CARDINAL PETROLEUM CO. & NORRIS OIL CO. 1
• CARDINAL PETROLEUM CO. & PETROLEUM, INC. 1
• CARDINAL PETROLEUM CO. & R. K. PETROLEUM 1
• CARDINAL PETROLEUM CO. & TITAN OIL CO. 1
• CARDINAL PETROLEUM CO. & TOM STOCK 1
• CARL D. UNDERWOOD OIL & GAS CO. 1
• CARMEN SCHMITT INC. 1
• CAROLINE HUNT SANDS 1
• CAROLINE HUNT SCHOELLKOPF 1
• CEJA CORPORATION 1
• CENTERPOINT DISPOSAL, INC. 1
• CHAMPLIN REFINING & REPUBLIC NATURAL GAS 1
• CHANDLER & ASSOCIATES & LEWIS ENTERPRISES 1
• CHANDLER & ASSOCIATES & R. B. STENBURG 1
• CHANDLER & ASSOCIATES & TIDDENS PETROLEUM 1
• CHARGER RESOURCES, LLC 1
• CHASE PETROLEUM LTD. 1
• CHEETAH RESOURCES, INC. 1
• CHIMNEY SWEEP OIL & GAS COMPANY 1
• CHS INC. 1
• CHURCH RICHTER ENERGY 1
• CITCO 1
• CLAN RESOURCES, LTD. 1
• CLEMENTS ENERGY, INC. 1
• CLOVER ENERGY CORP. 1
• CLYDE W. JONES & THE GAY CO. 1
• CLYDE W. JONES - ARROWHEAD EXPLORATION CO. 1
• COACHMAN ENERGY OPERATING COMPANY 1
• COCKRELL CORP. 1
• COKAMO OPERATING, LLC 1
• COLUMBIA PRODUCTION CO. 1
• COLUMBUS PRODUCTION, INC. 1
• CONCORD DEVELOPMENT CO. 1
• CONSTRUCTION SERVICE INC. 1
• CONTINENTAL TREND RESOURCES, INC. 1
• CONTINENTAL-PURE, DAVIDSON 1
• COX & ARTUS 1
• CRA, INC. 1
• CRAWFORD EXPLORATION CO. 1
• CROWN OIL, INC. 1
• CRUDE PETROLEUM, INC. 1
• CYPRESS ENERGY PARTNERS - BAKKEN, LLC 1
• D. D. FELDMAN OIL AND GAS 1
• DABBLER PETROLEUM, INC. 1
• DAKAMONT EXPLORATION CORP. 1
• DAKOTA DRILLING CO. 1
• DAKOTA SALTS, LLC 1
• DAKOTA WEST PUMPING, INC. 1
• DAKOTA-3 E&P COMPANY, LLC 1
• DALLAS ENGINEERING, INC. 1
• DALLEA-CARPENTER-VERRY 1
• DAN L. SCHWARTZ 1
• DEEP ROCK OIL CO. 1
• DELTA PETROLEUM CORPORATION 1
• DEVRAN PETROLEUM LTD. 1
• DIAMOND S ENERGY COMPANY 1
• DIXON DRILLING CO. & SCHROEDER 1
• DOL RESOURCES, INC. 1
• DON BILLS & CLINTON ST. CLAIR 1
• DON BILLS & FRED TIDDENS 1
• DON BILLS & ST. CLAIR & HAWN BROTHERS 1
• DOVER OIL, INC. 1
• DOW & MCHUGH 1
• DOW & MCHUGH-I. J. WILHITE 1
• DRY CREEK DISPOSAL COMPANY, INC. 1
• DUCE OIL LTD. 1
• DUNNE-GARDNER PETROLEUM, INC. 1
• Davidson SWD LLC 1
• E-SOURCE ENERGY SWD, LLC 1
• E. F. WAKEFIELD 1
• EARL L. REDMANN 1
• EARLSBORO OIL & GAS COMPANY, INC. 1
• EASTERN AMERICAN ENERGY CORP. 1
• EBEN OPERATING CO., LLC 1
• ELAND ENERGY, INC. 1
• EMEFCO PETROLEUM, INC. 1
• ENCORE ENERGY PARTNERS OPERATING LLC 1
• ENI EXPLORATION CO. 1
• ENSOURCE, INC. 1
• ENVIRONMENTALLY CLEAN SYSTEMS, LLC 1
• ERSKINE RESOURCES, INC. 1
• EVANS PRODUCTION CORP. 1
• EVERETT DRILLING VENTURES, INC. 1
• EVERTSON OPERATING COMPANY, INC 1
• EXECUTIVE DRILLING, LLC 1
• EXPLORATION DRILLING & SAMUEL GARY 1
• F & L PETROLEUM, LLC 1
• FAITH DRILLING, INC. 1
• FANCHER OIL CO. 1
• FAYETTE OIL & GAS CORP. 1
• FERRELLGAS, L.P. 1
• FINA OIL & CHEMICAL CO. 1
• FIREBIRD SERVICES, LLC 1
• FIRST BROADWAY CORPORATION 1
• FIRST ENERGY CORP. 1
• FLETCHER OIL & GAS & SIGNAL DRILLING 1
• FLUIDTECH ENERGY, LLC 1
• FMP OPERATING CO. 1
• FORT UNION PETROLEUM CORP. 1
• FRAZIER-CONROY 1
• FRED TRAUGOTT 1
• FRONTIER LAND & OIL, INC. 1
• FRONTIER VENTURES, LLC 1
• GALAXY OIL CO. & REBEL OPERATING CO. 1
• GALAXY OIL OPERATING, L.L.C. 1
• GEMINI CORP. & BEARD OIL CO. 1
• GEMINI OIL & GAS CORP. 1
• GEMINI OIL & GAS EXPLORATION CO. 1
• GENE CLARK, JR. 1
• GEOSTAR CORP. 1
• GERONIMO OIL CO. 1
• GLOBE MINERALS, INC. 1
• GLOBE PETROLEUM CO. 1
• GORDON B. BUTTERFIELD 1
• GREAT PLAINS ENERGY INC 1
• GREAT PLAINS ROYALTY & ANSCHUTZ OIL CO. 1
• GREAT PLAINS ROYALTY & JOHN D. DALTON 1
• GREAT PLAINS ROYALTY CORP. & V. V. BULL 1
• GREAT YELLOWSTONE & STONE OIL CORP. 1
• GRYNBERG PETROLEUM CO. 1
• GUFFEY, SEITZ, CLARK & COWDEN 1
• H. A. CHAPMAN & A. G. GOLDEN 1
• H. E. SUTTON 1
• H. K. RIDDLE 1
• H. L. HUNT & ANADARKO PRODUCTION CO. 1
• H. L. HUNT & FARMERS UNION CENTRAL EXCH. 1
• H. W. CLARKSON & E. W. CLARKSON 1
• H. W. SNOWDEN 1
• HAMON OIL CO. 1
• HAMON OPERATING CO. 1
• HANSON OPERATING COMPANY, INC. 1
• HARRIS SWD, LLC 1
• HARVEST MIDSTREAM SERVICES-ND, LLC 1
• HAUGEN ENERGY CO. 1
• HEADINGTON OIL COMPANY 1
• HEBRON BRICK CO. 1
• HERBERT W. CALCOTE 1
• HERMAN HANSON OIL SYNDICATE 1
• HG&G, INC. 1
• HIGH COUNTRY EXPLORATION 1
• HIGH PLAINS OPERATING, LLC 1
• HJG NORTH DAKOTA-CARTWRIGHT, LLC 1
• HJG NORTH DAKOTA-WILLISTON, LLC 1
• HOME-STAKE PRODUCTION CO. 1
• HORIZON-OLSON, LLC 1
• HRM RESOURCES, LLC 1
• HYDRO VAULT, LLC 1
• I. J. WILHITE & CALKOTA ASSOCIATES 1
• I. J. WILHITE & CARDINAL DRILLING CO. 1
• I. J. WILHITE & SKELLY OILCO. 1
• I. J. WILHITE & SUNBEHM GAS, INC. 1
• I. J. WILHITE & TED F. BUNHAM, SR. 1
• I. J. WILHITE-CENTENNIAL ROYALTY CO. 1
• I. J. WILHITE-DAKKON PETROLEUM CO. 1
• I. J. WILHITE-DAKOTA MINING & DEVELOPMENT 1
• I. J. WILHITE-GENERAL PETROLEUM CORP. 1
• I. J. WILHITE-NORTHERN PUMP CO. 1
• I. J. WILHITE-SUNSHINE MINING CO. 1
• I. J. WILHITE-TED F. DUNHAM, SR. 1
• I. J. WILHITE-THOMAS PRODUCING CO. 1
• I. J. WILHITE-TIDDENS PETROLEUM CORP. 1
• IBONEX CORP. 1
• IHD SOLIDS MANAGEMENT, LLC 1
• ILLINI OIL COMPANY, INC. 1
• IMPEL ENERGY CORP. 1
• INDREX, INC. 1
• INTERVENTION ENERGY, LLC 1
• IOWA TANKLINES, INC. 1
• ITR PETROLEUM, INC. 1
• J. C. ANDERSON 1
• J. H. MOORE & R. E. MASSENGILL 1
• J. L. MCLAUGHLIN 1
• J. L. MCLAUGHLIN & CARDINAL 1
• J. L. MCLAUGHLIN & ERICKSON 1
• J.P. OIL COMPANY, INC. 1
• JACK GRYNBERG 1
• JACK M. JOHNSON ET AL 1
• JACK ROUSE & DAKOTA INTERNATIONAL 1
• JACK ROUSE-SUN OIL CO. 1
• JAKE L. HAMON 1
• JAMES C. HAYES & W. B. OSBORN 1
• JAMES H. SNOWDEN, ET AL 1
• JAMES M PETERSON, LLC 1
• JAMES S. WISE 1
• JAMES W. WILLIAMS, JR. 1
• JAS. T. WAMSLEY, TRUSTEE 1
• JENA OPERATING CO., INC. 1
• JEROME F. WHITESELL 1
• JEROME P. MCHUGH 1
• JN OIL & GAS 1
• JOHN BARLEAN 1
• JOHN R. BLACK ESTATE 1
• JOHN SNYDER & P. J. MCDONOUGH 1
• JOHNSON OIL CO. 1
• JOHNSON OIL CORP. 1
• JOHNSON OIL-GREAT PLAINS ROYALTIES 1
• JOHNSTON PETROLEUM CORP. 1
• K. ALFRED ELLISON 1
• KAISER ENERGY, INC. 1
• KANEB PRODUCTION CO. 1
• KATHOL PETROLEUM, INC. 1
• KAUFMAN & GAY 1
• KEITH F. WALKER 1
• KELLY OIL & GAS, INC. 1
• KELLY-PLYMOUTH 1
• KELSCH & DONLIN & MAR-WIN DEVELOPMENT 1
• KERNS OIL & GAS, INC. 1
• KGX RESOURCES, LLC 1
• KING RESOURCES CO. & PRONGHORN PETROLEUM 1
• KINGWOOD OIL CO. 1
• KIRBY EXPLORATION CO. 1
• KIRBY EXPLORATION CO. & A. G. GOLDEN 1
• KIRBY PETROLEUM CO. & A. G. GOLDEN 1
• KRB ENTERPRISE, INC. 1
• KSD, INC. 1
• LAMAE OIL & GAS, CORP. 1
• LANDTECH CORP. 1
• LAWRENCE DRILLING CO. 1
• LEACH OIL CORP. 1
• LEACH OIL CORP. & CALVERT DRILLING, INC. 1
• LEACH OIL CORP. & CARDINAL DRILLING CO. 1
• LEBEN DRILLING, INC. 1
• LEDGER ENERGY LLC 1
• LEGACY OIL & GAS ND, INC. 1
• LEHIGH PORTLAND CEMENT CO. 1
• LIBERTY RESOURCES LLC 1
• LULING OIL & GAS CO. 1
• LYCO ENERGY CORPORATION 1
• M. B. RUDMAN DRILLING CO. 1
• M. J. HARVEY, JR. 1
• MAGNOLIA PETROLEUM CO. 1
• MAGNUM, MIDSTREAM, LLC 1
• MARION OIL CO. 1
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• MARMIK OIL CO. 1
• MARSHALL R. YOUNG OIL CO. 1
• MATTHEWS, PIETTE & BEDDOW 1
• MAYCO EXPLORATION CO. 1
• MAYFAIR MINERALS, INC. 1
• MAYNARD OIL CO. 1
• MCCULLOCH OIL CORP. 1
• MCLAUGHLIN & DISNEY 1
• MCLAUGHLIN, INC. 1
• MCMORAN OIL & GAS CO. 1
• MCOIL CO. 1
• MCRAE-FLEMING ENTERPRISES 1
• MEGA CORP. 1
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• MERLAND RESOURCES, INC. 1
• MESA OPERATING CO. 1
• MGF OIL CORP. 1
• MICHAEL PUMPHREY INTERESTS 1
• MICHIGAN WISCONSIN PIPE LINE CO. 1
• MICHIWEST ENERGY, INC. 1
• MIDWEST EXPLORATION COMPANY, INC. 1
• MIDWEST OIL CO. 1
• MIKE WETCH 1
• MILES JACKSON, INC. 1
• MILLER & FOX DRILLING CORP. 1
• MILLER PETROLEUM, INC. 1
• MISSION RESOURCES 1
• MISSION RIDGE ENTERPRISE 1
• MISSOURI BREAKS OIL & GAS, INC. 1
• MISSOURI BREAKS, LLC 1
• MMGL MT I, LLC 1
• MOHAVE NORTH AMERICA CORPORATION 1
• MOMENTUM PETROLEUM CORP. 1
• MOXIE DISPOSAL SYSTEMS, LLC 1
• MURPHY OIL CORP. 1
• NABORS DRILLING USA, LP 1
• NADEL AND GUSSMAN ROCKIES, LLC 1
• NARECO CORP. 1
• NATIONAL ASSOCIATED PETROLEUM CO. 1
• NATIONAL PETROLEUM, INC. 1
• NATURAL GAS PROCESSING CO. 1
• NAUMANN OIL & GAS, INC. 1
• NEPTUNE OPERATING LLC 1
• NEW CONCORD DEVELOPMENT CO. 1
• NEW HORIZON EXPLORATION, INC. 1
• NEW LONDON OIL, INC. 1
• NICOR EXPLORATION CO. 1
• NOKOTA CO. 1
• NORMAN W. EDMUND 1
• NORTH AMERICAN & SIGNAL 1
• NORTH CENTRAL CASING PULLERS, INC. 1
• NORTHERN ORDINANCE, INC. 1
• NORTHERN REFINING CO. 1
• NORTHROCK RESOURCES, INC. 1
• NORTHWEST LAND AND OIL, INC. 1
• NORTHWESTERN REFINING - KELSCH & DONLIN 1
• NORTHWESTERN REFINING-NORTH STAR PETROLEUM 1
• NORVAL HAMERLY 1
• NOVA PETROLEUM CORP. 1
• NOVUS ENERGY COMPANY 1
• NRM PETROLEUM CORP. 1
• O. W. R. OIL - WHITSON INC. 1
• ODESSA NATURAL CORP. 1
• OMIMEX INTERNATIONAL CORPORATION 1
• ONEOK ROCKIES INVESTMENTS, LLC 1
• ONEOK ROCKIES MIDSTREAM 1
• ORION ENERGY PARTNERS L.P. 1
• OVACO ENERGY INC. 1
• OVERTHRUST RESOURCES, LTD. 1
• OXY LITTLE KNIFE, LLC 1
• PAINTBRUSH PETROLEUM CORP. 1
• PAN CANADIAN PETROLEUM CO.& THE NOKOTA CO. 1
• PAN CANADIAN PETROLEUM COMPANY, LTD. 1
• PANAMERICAN OPERATING, INC. 1
• PANCANADIAN PETROLEUM CO. 1
• PANTHER CREEK RESOURCES, LLC 1
• PANTHER ENERGY COMPANY, LLC 1
• PATRICK PETROLEUM CORP. 1
• PAUL F. RUTLEDGE 1
• PAWNEE OIL CORPORATION 1
• PEAK DRILLING CO. 1
• PEMBINA MOUNTAIN OIL EXPLORATION CO. 1
• PEREGRINE PETROLEUM PARTNERS, LTD 1
• PETROLEUM CORPORATION OF AMERICA & SCHAFER 1
• PETROLEUM CORPORATION OF TEXAS 1
• PETROREP, INC. 1
• PETX PETROLEUM CORP. 1
• PG&E RESOURCES CO. 1
• PHELPS DODGE FUEL DEVELOPMENT CORP. 1
• PHILLIPS & RALPH M. BALLARD 1
• PHOENIX RESOURCES CO. 1
• PIN OAK PETROLEUM, INC. 1
• PIONEER NATURAL RESOURCES USA, INC. 1
• PIONEER OIL CO. 1
• PLAYA OIL & GAS, LP 1
• PLAZA OIL & GAS - AMERICAN NATURAL GAS 1
• PLYMOUTH OIL CO. 1
• POLLARD & DAVIS 1
• POWERS LAKE & G. A. VINCENT 1
• PPJV, LLC 1
• PRAIRIE DISPOSAL LLC 1
• PRAIRIE ENERGY, INC. 1
• PRAIRIE HILLS OIL AND GAS, LLC 1
• PRAIRIE OIL & GAS 1
• PRAIRIE PRODUCTION, INC. 1
• PRAIRIE RESOURCES, INC. 1
• PRICE DRILLING CO. 1
• PRIMEWEST PETROLEUM INC. 1
• PROCHEMCO EXPLORATION CO. 1
• PROPEL ENERGY CO. 1
• PROPRIETARY ENERGY INDUSTRIES INC. 1
• Parshall SWD, LLC 1
• Prairie Horizon Land Development LLC 1
• QC ENVIRONMENTAL SERVICES, INC. 1
• QUANTUM OIL & GAS, L.L.C. 1
• QUE WEST RESOURCES, INC. 1
• QUINTANA PRODUCTION CO. 1
• R. A. PRATHER, ET AL 1
• R. B. STENBERG 1
• R. G. CARPENTER 1
• R. L. HILL 1
• R. W. WILLIS 1
• R360 WILLISTON BASIN, LLC 1
• RAINBOW ENERGY CENTER, LLC 1
• RED RIVER OIL & DEVELOPMENT 1
• REDEMPTION ENERGY, LLC 1
• REEDER OPERATING, LLC 1
• REELFOOT DEVELOPMENT COMPANY, INC. 1
• REPUBLIC EES, LLC 1
• RESERVE OIL, INC. 1
• RICK AALUND 1
• RINCON OPERATING CO. 1
• RIO PETRO LTD 1
• ROBERT E. HANSON 1
• ROBERT M. WATKINS & WHELESS DRILLING CO. 1
• ROBERT P. JACKMAN, INC. 1
• ROBILLARD OIL CO. 1
• ROCKEN ON DISPOSAL, LLC 1
• ROCKY MOUNTAIN OIL & MINERALS, INC. 1
• ROESSER & PENDELTON CO. 1
• ROFF OPERATING COMPANY LLC 1
• ROSEBUD ROYALTY CO. 1
• ROUGH RIDER BAKKEN WATER LLC 1
• ROUGHRIDER OIL COMPANY 1
• ROYAL RESOURCES CORP. 1
• RTR ENERGY, LLC 1
• RUDMAN-RUTLEDGE 1
• RUSSELL D. GARNER 1
• SAGA PETROLEUM U. S. INC. 1
• SAM BOREN 1
• SAM G. HARRISON 1
• SANCHEZ-O'BRIEN OIL & GAS CORP. 1
• SARGENT MINERAL CORP. 1
• SCI EXPLORATION, INC. 1
• SEAGULL-TAURUS 1
• SEARCH NATURAL RESOURCES 1
• SECURE ENERGY SERVICES USA, LLC 1
• SEQUEL ENERGY, LLC 1
• SHEFFIELD EXPLORATION COMPANY, INC. 1
• SIANA OIL & GAS., L.L.C 1
• SIGNAL DRILLING CO. & NEVADA EMPIRE CORP. 1
• SILVER THREAD OIL & GAS, INC. 1
• SIMCOX OIL CO. & CALVERT EXPLORATION CO. 1
• SINCLAIR OIL CORPORATION 1
• SIX BAR OIL LLC 1
• SNYDER OIL CO. 1
• SOCONY MOBILE OIL COMPANY, INC. 1
• SOHIO PETROLEUM CO. & ARGO OIL CORP. 1
• SOURIS OIL & GAS LIMITED 1
• SOUTH OAK PRODUCTION COMPANY 1
• SOUTHERN PRODUCTION COMPANY, INC. 1
• STAMAN EXPLORATION & PRODUCTION CO. 1
• STONE ENERGY, L.L.C. 1
• STONE PETROLEUM CORP. 1
• STRIKER PETROLEUM CORP. 1
• SUN OIL CO. 1
• SUNDANCE ENERGY, INC 1
• SUNRAY MID-CONTINENT OIL CO. 1
• SUNSET INTERNATIONAL PETROLEUM CORP. 1
• SWANSON OILFIELD SERVICES, INC. 1
• SWENSON & HECTOR 1
• Steel Reef Burke LLC 1
• SureFire Energy LLC 1
• TAQA USA, INC. 1
• TATUM PETROLEUM CORP. 1
• TEJAS GAS CORP. 1
• TEMPLETON ENERGY, INC. 1
• TESORO PETROLEUM CORP. 1
• TEXAS EASTERN OIL CO. 1
• TEXAS INTERNATIONAL PETROLEUM CORP. 1
• THE HOUSTON EXPLORATION COMPANY 1
• THE PURE OIL COMPANY 1
• THE TRIPLE T, INC. 1
• THOMAS W. LEACH, ET AL 1
• THOMSON PETROLEUM, INC. 1
• TIDDENS PETROLEUM CORP. & STUARCO OIL CO. 1
• TIOGA PETROLEUM CORP. 1
• TIVERTON PETROLEUM, INC. 1
• TODD JAMIESON BALLANTYNE 1
• TOM JORDAN, SIGNAL DRILLING & CAPPY RICKS 1
• TOM SCHWARTZ & C. W. WILLIAMS, JR. 1
• TOM VESSELS 1
• TRACER ENERGY, INC. 1
• TREND RESOURCES, LTD. 1
• TRICENTROL UNITED STATES, INC. 1
• TRIO OPERATING COMPANY, INC. 1
• TRITON OIL & GAS CORP. 1
• U. S. FOREST SERVICE 1
• ULTRAMAR OIL & GAS LIMITED 1
• UMC PETROLEUM CORP. 1
• UNICHEM INTERNATIONAL, INC. 1
• UNIT PETROLEUM COMPANY 1
• UNITED PRODUCING CO. & VAUGHN PETROLEUM 1
• UNITEX, LTD. 1
• UPLAND HOLDINGS LLC 1
• US CAPITAL ENERGY, INC. 1
• UTAH SOUTHERN OIL CO. 1
• VALERO PRODUCING CO. 1
• VAN HOOK GATHERING SERVICES, LLC 1
• VENTEX OPERATING CORP. 1
• VICKERS & VICKERS 1
• VIERSEN & COCHRAN, A PARTNERSHIP 1
• VIKING RESOURCES CORP. 1
• W. A. MONCRIEF & WESTCOAST OIL & GAS CORP. 1
• W. A. MONCRIEF & WESTHOMA OIL CO. 1
• W. H. HUNT 1
• W. W. WICKLUND 1
• WAGGONER-BALDRIDGE ENERGY CO. 1
• WALLACE R. CARLSON 1
• WANETE OIL CO. 1
• WASCANA OIL & GAS, INC. 1
• WASHINGTON ENERGY OIL, INC. 1
• WAYNE G. TODD 1
• WAYNE G. TODD D/B/A TIOGA DISPOSAL CO. 1
• WBI PRODUCTION, INC. 1
• WELL DEVELOPMENT L.L.C. 1
• WESTBURNE EXPLORATION, INC. 1
• WESTERN INTERIOR RESOURCES 1
• WEXPRO COMPANY 1
• WHITE EAGLE CO. 1
• WHITEHALL WESTERN OILS, LTD. & DOME 1
• WHITEHAWK ENERGY, INC. 1
• WILLIAM M. HANLON 1
• WILLIS L. WALKER & BEARTOOTH OIL & GAS CO. 1
• WILLISTON BASIN INTERSTATE PIPELINE CO. 1
• WILLISTON BASIN OIL VENTURES 1
• WILLISTON HUNTER ND, LLC 1
• WILLISTON OIL & GAS CO. 1
• WISE OIL COMPANY NO. 2 ET AL 1
• WJW OPERATING CO., LLC 1
• WOOLLEY RESOURCES, INC. 1
• WRIGHT & POLLARD 1
• WULF OIL CORP. 1
• WW OILFIELD SERVICES, LLC 1
• Wave Petroleum Operating, LLC 1
• XPLOR ENERGY CORP. 1
• ZINN PETROLEUM CO. 1
• ZOLLER & DANNEBERG, INC. 1