| PERKINS ENERGY COMPANYActive | 1680 | DUNCAN | 174 | 17 |
| PERKINS FAMILY INVESTMENTS LLCActive | 23398 | DUNCAN | 5 | 1 |
| PERKINS KELDA | 21995 | DUNCAN | 0 | 0 |
| PERKINS MIKE | 7028 | VELMA | 0 | 0 |
| PERKINS NOVA | 18199 | ATWOOD | 2 | 1 |
| PERKINS OIL COMPANY | 7636 | NOWATA | 11 | 6 |
| PERKINS PRODUCTION COMPANY INC | 1681 | SEMINOLE | 1 | 0 |
| PERMIAN GAS SYSTEMS INC | 14213 | MIDLAND | 1 | 1 |
| PERMIAN ROUSTABOUT & OILFIELD SERVICES LLCActive | 24458 | BLANCHARD | 4 | 2 |
| PERMIAN WEST CORPORATION | 18129 | ODESSA | 5 | 4 |
| PERRAULT OIL COMPANY | 6445 | TULSA | 1 | 1 |
| PERRAULT PRODUCTION CO | 6011 | TULSA | 16 | 3 |
| PERRY BOTTOM LLC | 22750 | STIGLER | 0 | 0 |
| PERRY ENERGY COMPANY INC | 15881 | HOUSTON | 1 | 1 |
| PERRY EXPLORATION COMPANY | 15680 | AURORA | 4 | 2 |
| PERRY JAMIEActive | 24701 | ADA | 3 | 1 |
| PERRY L LARSON OPERATING COActive | 12472 | DALLAS | 21 | 4 |
| PERRY PETROLEUM SERVICES INC | 14103 | MINERAL WELLS | 0 | 0 |
| PERRY PRODUCTION COMPANY INC | 15028 | PERRY | 10 | 3 |
| PERRYMAN MONTIE | 17971 | TULSA | 1 | 1 |
| PERSEUS CORPORATION | 15797 | KINGFISHER | 0 | 0 |
| PERTEX CORPORATION | 18701 | TULSA | 2 | 2 |
| PERTEX OIL COMPANY | 12490 | WICHITA FALLS | 1 | 1 |
| PET-EX INC | 16474 | OKLAHOMA CITY | 12 | 7 |
| PETCO ENERGY | 8491 | CLAREMORE | 20 | 3 |
| PETCO ENERGY CORPORATIONActive | 24523 | HINSDALE | 130 | 1 |
| PETCO ENERGY LTD | 12036 | OKLAHOMA CITY | 0 | 0 |
| PETCO OIL & GAS INC | 6159 | OKLAHOMA CITY | 8 | 4 |
| PETCO PETROLEUM CORP | 19386 | HINSDALE | 13 | 1 |
| PETERS LUTHER | 12891 | BARTLETT | 0 | 0 |
| PETERS OSCAR J & EDITH DORIS | 16965 | SKIATOOK | 0 | 0 |
| PETERSON CHARLES E SRActive | 21372 | STROUD | 1 | 1 |
| PETERSON MAJORIE S | 6496 | HOUSTON | 0 | 0 |
| PETRA EXPLOR & PROD CO INC | 20748 | DALLAS | 0 | 0 |
| PETRA OPERATING INC | 22441 | VANCOUVER | 1 | 1 |
| PETRA PETROLEUM INC | 19052 | LITTLETON | 1 | 1 |
| PETRA PETROLEUM MANAGEMENT LLC | 21833 | HOTCHKISS | 8 | 1 |
| PETRA SOLIDUS LLC | 23193 | ADDISON | 0 | 0 |
| PETRANOL AMERICA INC | 15669 | ABILENE | 0 | 0 |
| PETREX PETROLEUM EXPLOR LTD | 12039 | OKLAHOMA CITY | 0 | 0 |
| PETRO 85 | 17112 | INDEPENDENCE | 0 | 0 |
| PETRO AUSTIN ENERGY CORP | 13842 | TULSA | 0 | 0 |
| PETRO DAVIS INC | 7258 | OKLAHOMA CITY | 13 | 6 |
| PETRO DEVELOPMENT INC | 12038 | HOUSTON | 0 | 0 |
| PETRO EQUITY INVESTMENT | 14717 | TULSA | 2 | 2 |
| PETRO GENERAL CORPORATION | 14852 | SAN FRANCISCO | 2 | 1 |
| PETRO GENERAL INC | 22351 | TULSA | 0 | 0 |
| PETRO INTERNATIONAL RESOURCES INC | 18439 | MCKINNEY | 6 | 1 |
| PETRO MANAGEMENT CORP THE | 15042 | VANCOUVER | 0 | 0 |
| PETRO OILFIELD EQUIPMENT INC | 17790 | DRUMRIGHT | 2 | 2 |
| PETRO SPEED INC | 12467 | NORMAN | 32 | 11 |
| PETRO STAR INC | 14165 | MIAMI | 0 | 0 |
| PETRO UNITED ASSOC INC | 11878 | DALLAS | 0 | 0 |
| PETRO WARRIOR LLCActive | 22165 | WICHITA | 20 | 4 |
| PETRO WESTERN ENERGY CORP | 6110 | OKLAHOMA CITY | 2 | 1 |
| PETRO-AMERICAN OIL CORP | 16979 | MOORE | 0 | 0 |
| PETRO-CHASE ENERGY CORP | 15122 | OKLAHOMA CITY | 2 | 2 |
| PETRO-GUARD COMPANY INC | 17325 | HOUSTON | 2 | 2 |
| PETRO-HALEY | 18658 | BORGER | 4 | 2 |
| PETRO-HUNT CORPORATION | 16113 | DALLAS | 1 | 1 |
| PETRO-MAC CORPORATION | 13470 | TULSA | 11 | 2 |
| PETRO-MANAGEMENT ASSOC., INC. | 15333 | EDMOND | 22 | 9 |
| PETRO-MET ENERGY LLCActive | 23002 | EDMOND | 2 | 2 |
| PETRO-RICH INC | 14859 | ADDISON | 3 | 1 |
| PETROBROS LLC | 24919 | Sapulpa | 0 | 0 |
| PETROCOM | 20694 | WOODWARD | 0 | 0 |
| PETROCORP INCORPORATED | 12632 | OKLAHOMA CITY | 0 | 0 |
| PETROCORP INCORPORATED | 18924 | TULSA | 0 | 0 |
| PETRODA OIL & GAS LLC | 20572 | Edmond | 2 | 2 |
| PETRODRIL | 13701 | DAVIS | 0 | 0 |
| PETRODRIL INC | 16823 | DAVIS | 0 | 0 |
| PETRODYNE RESOURCES LTDActive | 23281 | TULSA | 0 | 0 |
| PETROFLOW ENERGY CORPORATION | 21905 | TULSA | 3 | 3 |
| PETROGLOBE ENERGY LLC | 24501 | TULSA | 0 | 0 |
| PETROGLYPH OPERATING CO INC | 19247 | HUTCHINSON | 1 | 1 |
| PETROGRIT RESOURCES LLC | 24353 | BROKEN ARROW | 0 | 0 |
| PETROGULF CORPORATION | 20028 | DENVER | 6 | 1 |
| PETROHAWK OPERATING COMPANY | 19562 | HOUSTON | 39 | 12 |
| PETROJEN PRODUCTION COMPANY INCActive | 23213 | Bakersfield | 8 | 1 |
| PETROLABS INC | 17912 | WOODWARD | 0 | 0 |
| PETROLANIC INC | 15163 | TULSA | 0 | 0 |
| PETROLERA OIL & GAS LLCActive | 24440 | OKLAHOMA CITY | 2 | 1 |
| PETROLEUM CAPITAL L C | 19829 | DALLAS | 2 | 2 |
| PETROLEUM CONSULTANTS INC | 18412 | TEXHOMA | 2 | 1 |
| PETROLEUM CORP OF DELAWARE | 13474 | DALLAS | 0 | 0 |
| PETROLEUM CORPORATION OF TEXAS | 1688 | BRECKENRIDGE | 0 | 0 |
| PETROLEUM DEVELOPMENT COMPANYActive | 19341 | TULSA | 18 | 6 |
| PETROLEUM EQUITIES CORPORATION | 12527 | LONGVIEW | 0 | 0 |
| PETROLEUM EXPLO PROD INC | 12393 | OILTON | 3 | 2 |
| PETROLEUM EXPLORATION COMPANY LTD LPActive | 23218 | BRECKENRIDGE | 45 | 8 |
| PETROLEUM INC | 1691 | WICHITA | 50 | 21 |
| PETROLEUM INTERNATIONAL INC | 3729 | TULSA | 4 | 3 |
| PETROLEUM INVESTMENT GROUP INC | 16542 | CEDAR RAPIDS | 0 | 0 |
| PETROLEUM INVESTMENT INC | 12093 | OKLAHOMA CITY | 7 | 4 |
| PETROLEUM INVESTMENTS LTD | 7078 | OKLAHOMA CITY | 0 | 0 |
| PETROLEUM INVESTORS LTD | 13674 | VENTURA | 0 | 0 |
| PETROLEUM MANAGEMENT INC | 1693 | WICHITA | 1 | 1 |
| PETROLEUM MANAGEMENT PROF INC | 12667 | OKLAHOMA CITY | 3 | 3 |
| PETROLEUM OIL & GAS INC | 20220 | DOVER | 1 | 1 |
| PETROLEUM OPERATORS INC | 17469 | LINDSEY | 1 | 1 |
| PETROLEUM PROP MGMT CO LLC | 20317 | OKLAHOMA CITY | 0 | 0 |
| PETROLEUM PROPERTIES CO INC | 19156 | TULSA | 0 | 0 |
| PETROLEUM PROPERTIES MGMT CO | 18627 | OKLAHOMA CITY | 12 | 3 |
| PETROLEUM RESOURCES CO | 1695 | WICHITA | 15 | 7 |
| PETROLEUM TECH SERVICES CO | 13487 | MIDLAND | 0 | 0 |
| PETROLIA CORPORATION | 11890 | OKLAHOMA CITY | 0 | 0 |
| PETROLIA ENERGY CORPORATIONActive | 23754 | HOUSTON | 103 | 1 |
| PETROMAN OPERATING CORPORATION | 14634 | VANCOUVER | 0 | 0 |
| PETROMARK ENERGY LLC | 20517 | OKLAHOMA CITY | 0 | 0 |
| PETROMARK RESOURCES COMPANY | 12138 | TULSA | 4 | 2 |
| PETROMAX ENERGY CORP | 11022 | THORNTON | 1 | 1 |
| PETROMERICA OPERATING LLC | 22883 | OKLAHOMA CITY | 1 | 1 |
| PETRON ENERGY INC | 14085 | BLACKWELL | 0 | 0 |
| PETRON ENERGY INCActive | 22277 | DALLAS | 0 | 0 |
| PETRON OIL COMPANY | 20620 | MISSOURI CITY | 5 | 2 |
| PETROPLEX INC | 16735 | TULSA | 0 | 0 |
| PETROQUEST ENERGY LLCActive | 21466 | LAFAYETTE | 47 | 4 |
| PETROQUEST OIL & GAS LLCActive | 21155 | WEWOKA | 36 | 2 |
| PETROSCOUT OPERATING LLC | 22990 | DALLAS | 0 | 0 |
| PETROSEARCH OPERATING COMPANY LLC | 21574 | DALLAS | 3 | 2 |
| PETROTEC PRODUCTION INC | 13991 | WICHITA | 0 | 0 |
| PETROTECH INC | 18118 | BIXBY | 1 | 1 |
| PETROTEX INC | 19442 | ABILENE | 1 | 1 |
| PETROVEST MANAGEMENT CORP | 12175 | TULSA | 0 | 0 |
| PETROWARRIOR OIL & GAS INC | 12836 | DENVER | 1 | 1 |
| PETROWATER SOLUTIONS LLC | 22190 | OKLAHOMA CITY | 1 | 1 |
| PETROWEST ETAL CRED & INV | 15375 | DALLAS | 2 | 2 |
| PETROWEST INC | 10292 | DALLAS | 0 | 0 |
| PETROX CORP | 12228 | HOUSTON | 0 | 0 |
| PETTIGREW KENNYActive | 17961 | SPIRO | 1 | 1 |
| PETTIT CHARLES OIL COMPANY | 14590 | OKMULGEE | 7 | 2 |
| PGP GAS SUPPLY POOL NO 2 LLC | 22779 | KENNESAW | 0 | 0 |
| PHAROAH BOB | 14899 | MAYSVILLE | 1 | 1 |
| PHASE III DRILLING INC | 14896 | WETUMKA | 15 | 7 |
| PHASE III OIL & GAS INC | 10669 | ELGIN | 1 | 1 |
| PHD OIL & GAS INC | 13841 | RUSH SPRINGS | 1 | 1 |
| PHELDON OIL PRODUCTION INCActive | 18616 | ASHER | 25 | 4 |
| PHELPS ARDMORE & ASSOCIATES | 16736 | ARDMORE | 3 | 1 |
| PHIL'S PIPE & SUPPLY | 17078 | DRUMRIGHT | 0 | 0 |
| PHIL-CO LLC | 20125 | BARTLESVILLE | 15 | 1 |
| PHILCO ENERGY INC | 8202 | LAMESA | 22 | 2 |
| PHILCON DEVELOPMENT CO | 20706 | AMARILLO | 2 | 2 |
| PHILCON DEVELOPMENT COMPANY | 3473 | AMARILLO | 11 | 3 |
| PHILLIPS & DELOZIER PTR | 15628 | WANN | 49 | 12 |
| PHILLIPS 66 PIPELINE LLC | 23598 | HOUSTON | 28 | 1 |
| PHILLIPS COMPLETION CORP | 14838 | BARNSDALL | 7 | 5 |
| PHILLIPS EMET | 4589 | RINGLING | 3 | 2 |
| PHILLIPS HERBERT L ESTATE | 20670 | HOLDENVILLE | 0 | 0 |
| PHILLIPS JR N J | 3847 | SEMINOLE | 0 | 0 |
| PHILLIPS OIL OPERATING CO | 4546 | ENID | 62 | 14 |
| PHILLIPS OPERATING COMPANY | 18420 | JAY | 2 | 2 |
| PHILLIPS WILLIAM H | 16641 | WANN | 0 | 0 |
| PHILPOT OPERATING COMPANY INC | 14024 | ADA | 7 | 2 |
| PHIPPS JAMES L & ROSE N | 12087 | COPAN | 0 | 0 |
| PHOENIX ENERGY PARTNERS LLCActive | 25090 | MARLOW | 10 | 2 |
| PHOENIX GEOPHYSICS INC | 14104 | DENVER | 5 | 1 |
| PHOENIX HYDROCARBONS OPERATING CO | 20217 | MIDLAND | 2 | 1 |
| PHOENIX LTD | 16127 | CHARLOTTE | 19 | 2 |
| PHOENIX MIDSTREAM LLCActive | 24426 | HOUSTON | 5 | 5 |
| PHOENIX OIL & GAS INC | 10952 | SEMINOLE | 27 | 4 |
| PHOENIX OPERATING CO | 16938 | DALLAS | 1 | 1 |
| PHOENIX OPERATING INC | 15381 | OKLAHOMA CITY | 0 | 0 |
| PHOENIX PETROCORP INCActive | 19499 | MCKINNEY | 558 | 6 |
| PHOENIX PETROLEUM PARTNERS, LLC | 22944 | DALLAS | 0 | 0 |
| PHOENIX PRODUCTION INC | 20587 | BURNEYVILLE | 16 | 5 |
| PHONIX RESOURCES GEN PARTNERS | 15742 | TULSA | 0 | 0 |
| PHYSICIANS OIL PRODUCTION LLC | 23721 | OKLAHOMA CITY | 0 | 0 |
| PIC INC | 16137 | PONCA CITY | 0 | 0 |
| PIC INC | 16213 | PONCA CITY | 0 | 0 |
| PICES ENERGY PRODUCTION CO. | 5971 | ALVA | 2 | 2 |
| PICKELSIMER KENNY | 20550 | WILSON | 2 | 1 |
| PICKENS COMPANY INC (THE) | 15503 | DALLAS | 5 | 4 |
| PICKENS W C | 1704 | DALLAS | 22 | 9 |
| PICKETT CLEO | 3032 | WALTERS | 0 | 0 |
| PIEDMONT OIL COMPANY | 16268 | STONEWALL | 2 | 1 |
| PIERATT MARY LOUActive | 18892 | BRISTOW | 1 | 1 |
| PIERCE E J | 15411 | GRAHAM | 0 | 0 |
| PIERCE G R OIL PROPERTIES INC | 2776 | OKLAHOMA CITY | 23 | 7 |
| PIERCE GWENDOLEN | 20303 | ADA | 0 | 0 |
| PIERCE INVESTMENTS | 13086 | WEATHERFORD | 6 | 1 |
| PIERCE JOHN R | 24465 | NOWATA | 0 | 0 |
| PIERCE L H | 5499 | HEALDTON | 0 | 0 |
| PIERCE O M OPERATIONS | 1707 | DUNCAN | 11 | 4 |
| PIERCE OIL COMPANY | 5213 | SKIATOOK | 9 | 2 |
| PIERCE PATSEY R THE ESTATE OF | 18062 | DUNCAN | 5 | 3 |
| PIERCE RAYMOND L | 3060 | BARTLESVILLE | 2 | 1 |
| PIERCE RUSTY K | 18245 | HEALDTON | 0 | 0 |
| PIERCE STEVE OIL PROPERTIE INC | 12511 | GUTHRIE | 8 | 4 |
| PIERCO ENERGY CORP | 22246 | DALLAS | 3 | 2 |
| PIERSON MAX S | 16557 | BARTLESVILLE | 0 | 0 |
| PIERSON MAX S | 18425 | BARTLESVILLE | 0 | 0 |
| PIKE OIL & GAS INC | 21332 | TULSA | 0 | 0 |
| PILANT TROY E | 1709 | TULSA | 0 | 0 |
| PILGRIM & SMITH INC | 19235 | TULSA | 1 | 1 |
| PILGRIM BROS TRUCKING INC | 15224 | TULSA | 1 | 1 |
| PILGRIM BROTHERS OIL | 10349 | TULSA | 0 | 0 |
| PILGRIM GARY W | 18698 | TULSA | 0 | 0 |
| PILGRIM PETROLEUM CORPORATION | 21814 | ENID | 0 | 0 |
| PILLERS CHRISActive | 23440 | SKIATOOK | 36 | 1 |
| PILOT ENERGY CORPORATION | 7776 | DALLAS | 10 | 3 |