| R B OIL INC | 14881 | EDMOND | 0 | 0 |
| R BAKER OIL LLCActive | 20773 | OKEMAH | 96 | 4 |
| R C CRUDE LLC | 22321 | S COFFEYVILLE | 0 | 0 |
| R C HOLDINGS LLC | 22288 | GARBER | 0 | 0 |
| R C OIL COMPANY INCActive | 16214 | NOWATA | 105 | 4 |
| R C OPERATING LLC | 23263 | YUKON | 2 | 1 |
| R C TAYLOR OPERATING COMPANY LLCActive | 23234 | OKLAHOMA CITY | 59 | 5 |
| R D T PROPERTIES | 8520 | TULSA | 3 | 1 |
| R E BLAIK INCActive | 16832 | EDMOND | 31 | 9 |
| R E C TULSA CORPORATION | 13622 | OKLAHOMA CITY | 17 | 7 |
| R H OIL INC | 16841 | BEGGS | 0 | 0 |
| R H S INC | 11321 | ADA | 6 | 1 |
| R I G PRODUCERS INC | 12800 | DEWEY | 2 | 1 |
| R J C INC | 11428 | CLAREMORE | 1 | 1 |
| R J ENERGY CORP | 16168 | NORMAN | 6 | 2 |
| R J EXPLORATION LLCActive | 22656 | KONAWA | 168 | 4 |
| R K D ALTRUISTS INC | 13976 | MIDWEST CITY | 0 | 0 |
| R K R EXPLORATION | 14395 | SEMINOLE | 4 | 2 |
| R L CLAMPITT & ASSOCIATES LLC | 18236 | BARTLESVILLE | 10 | 1 |
| R L TURNER OIL COMPANY LLCActive | 22280 | Duncan | 65 | 2 |
| R M C PRODUCTION INC | 12781 | GUTHRIE | 0 | 0 |
| R M S OIL & GAS | 15747 | AMARILLO | 2 | 1 |
| R R & M OIL | 17575 | OKMULGEE | 2 | 1 |
| R R KAHLE INCActive | 21299 | NEWKIRK | 2 | 1 |
| R W ENERGY INC | 16973 | DRUMMOND | 0 | 0 |
| R W PRODUCTION COMPANY INC | 4138 | ADA | 13 | 3 |
| R&R PRODUCTION COMPANY, LLCActive | 24965 | Tulsa | 16 | 1 |
| R.E.J.A.S. ENERGY LLCActive | 24540 | TULSA | 3 | 1 |
| R2Q OPERATING LLCActive | 25248 | Dallas | 8 | 2 |
| R2R RESOURCES LTD LLC | 21011 | MANNFORD | 0 | 0 |
| R3 RENEW LLC | 24663 | SODDY DAISY | 0 | 0 |
| R3 RESOURCES OPERATING CORPORATIONActive | 25174 | GREENWOOD VILLAGE | 31 | 9 |
| R360 OKLAHOMA LLCActive | 22898 | THE WOODLANDS | 1 | 1 |
| RA-CO DRILLING OPERATORS LTD | 10288 | TULSA | 0 | 0 |
| RA-JAC LLCActive | 16662 | NORMAN | 32 | 9 |
| RAAD INVESTMENTS LLC | 24903 | SPRINGER | 0 | 0 |
| RACHAEL EXPLORATION CORP | 19056 | TRAVERSE CITY | 2 | 1 |
| RACHALK PRODUCTION INC | 10637 | IRVING | 11 | 6 |
| RACK OIL INC | 8375 | NORMAN | 0 | 0 |
| RACKLEY OIL & GAS, LLCActive | 24896 | BALKO | 16 | 2 |
| RAD OIL COMPANY | 15146 | SALT LAKE CITY | 1 | 1 |
| RADFORD & HEATON | 16299 | KONAWA | 0 | 0 |
| RADFORD DALEActive | 4052 | KONAWA | 59 | 2 |
| RADFORD DARIN HERBERTActive | 20368 | KONAWA | 3 | 1 |
| RADIANT ENERGY LC | 21313 | OKLAHOMA CITY | 1 | 1 |
| RADIUS OPERATING LLC | 22610 | DALLAS | 1 | 1 |
| RAEMHILD & HOUSE | 10474 | DEWEY | 4 | 1 |
| RAEWYN OIL CORP | 15893 | HASKELL | 12 | 2 |
| RAF OIL COMPANY | 5331 | OKLAHOMA CITY | 6 | 5 |
| RAF OPERATING LLC | 23010 | OKLAHOMA CITY | 0 | 0 |
| RAFTER H OPERATING LLCActive | 21697 | EL RENO | 13 | 8 |
| RAGLE BILL | 12293 | DURANT | 0 | 0 |
| RAH RESOURCES, LLCActive | 24939 | Edmond | 0 | 0 |
| RAHM JACK P | 1765 | ADA | 0 | 0 |
| RAHM OIL COMPANY | 15848 | ENID | 1 | 1 |
| RAHMCO OIL AND GAS CO INC | 11365 | PONCA CITY | 5 | 1 |
| RAINBO SERVICE COMPANYActive | 20111 | OKLAHOMA CITY | 8 | 2 |
| RAINBOW 66 ENERGY LLC | 24264 | BURNEYVILLE | 0 | 0 |
| RAINBOW END RANCH | 18945 | OKEMAH | 0 | 0 |
| RAINBOW FARMS INC | 19795 | MUSKOGEE | 1 | 1 |
| RAINBOW OIL & GAS | 1768 | PAWHUSKA | 3 | 2 |
| RAINBOW OIL & GAS EXPLORATION | 13995 | PAWHUSKA | 1 | 1 |
| RAINBOW OIL & GAS LLCActive | 2392 | PAWHUSKA | 10 | 2 |
| RAINBOW OILWELL SERVICE INCActive | 15005 | DEPEW | 12 | 1 |
| RAINEY OIL CO | 7592 | TULSA | 23 | 5 |
| RAINMAKER OIL & GAS CORP | 21317 | OKLAHOMA CITY | 0 | 0 |
| RAINS & WILLIAMSON OIL CO INC | 8402 | WICHITA | 0 | 0 |
| RAINWATER A L | 1770 | OKMULGEE | 0 | 0 |
| RAINWATER ARTHUR | 5434 | BARTLESVILLE | 0 | 0 |
| RAINWATER INVESTMENT CORP | 15012 | TULSA | 0 | 0 |
| RAISA II OPERATING LLC | 24138 | DENVER | 0 | 0 |
| RAIZEN OIL COMPANY | 16528 | DUNCAN | 0 | 0 |
| RAIZEN OIL COMPANY | 7352 | VELMA | 0 | 0 |
| RAIZEN OIL LLC | 20267 | DUNCAN | 7 | 2 |
| RAIZEN SAM FAMILY TRUST | 1774 | DENVER | 1 | 1 |
| RAJON RESOURCES | 13098 | TULSA | 2 | 1 |
| RAKE II WAYNE EDWARD | 14033 | COLLINSVILLE | 0 | 0 |
| RAKER RESOURCES LLCActive | 23005 | HOUSTON | 9 | 5 |
| RAKO OPERATING COMPANY | 17252 | FAYETTEVILLE | 19 | 4 |
| RALPH W POLONE FAMILY FARM 2006 LIVING TRUSTActive | 7689 | PRYOR | 27 | 1 |
| RALSTON RESERVE OIL CO INC | 14166 | PAWNEE | 2 | 1 |
| RAM ASSET MANAGEMENT CO | 13812 | OKLAHOMA CITY | 16 | 9 |
| RAM ASSET MANAGEMENT LLCActive | 23827 | TULSA | 17 | 2 |
| RAM ENERGY LLCActive | 23436 | TULSA | 6 | 2 |
| RAM EXPLORATION & PRODUCTION | 16647 | EULESS | 1 | 1 |
| RAM OIL & GAS | 15995 | BLACKWELL | 7 | 2 |
| RAM RESERVE CONSOLIDATION INC | 16925 | OKLAHOMA CITY | 0 | 0 |
| RAMA | 19764 | DAVIS | 1 | 1 |
| RAMA OPERATING COMPANY INCActive | 17093 | STAFFORD | 20 | 3 |
| RAMBLER OIL CO | 6084 | OKLAHOMA CITY | 54 | 10 |
| RAMCO DRILLING SERVICES INC | 16656 | HOLLYWOOD | 0 | 0 |
| RAMCO ENERGY CORPORATION | 17377 | FORT LAUDERDALE | 4 | 1 |
| RAMCO OIL & GAS INC | 17142 | SHAWNEE | 15 | 6 |
| RAMCO OIL COMPANYActive | 11558 | PAWHUSKA | 14 | 1 |
| RAMCO RESOURCES LLCActive | 23105 | AUSTIN | 1 | 1 |
| RAMCO-NYL 1987 LTD | 18531 | TULSA | 0 | 0 |
| RAMER CHARLES W | 13909 | HARRAH | 0 | 0 |
| RAMEY J C | 10937 | DEWEY | 0 | 0 |
| RAMEY L E SR | 6945 | MOUNDS | 4 | 1 |
| RAMEY OIL CORPORATION | 4704 | KIEFER | 113 | 2 |
| RAMEY SHARP N GLENN SD UNIT | 12585 | TULSA | 71 | 1 |
| RAMEY WAYNEActive | 7003 | MOUNDS | 46 | 5 |
| RAMHEAD PETROLEUM INC | 11755 | SEMINOLE | 1 | 1 |
| RAMONA PROJECTS LP | 16985 | PHOENIX | 0 | 0 |
| RAMPAGE ENERGY INC | 15561 | BRISTOW | 65 | 11 |
| RAMPART RESOURCES COMPANY LLC | 22646 | TULSA | 2 | 1 |
| RAMSEY DRILLING | 8682 | OKMULGEE | 1 | 1 |
| RAMSEY ENGINEERING INC | 1775 | OKLAHOMA CITY | 41 | 22 |
| RAMSEY GEORGE H ESTATE | 2700 | ARDMORE | 8 | 4 |
| RAMSEY NICHOLS OPERATING COMPANY LLC | 24152 | OKLAHOMA CITY | 11 | 5 |
| RAMSEY OIL | 5816 | COPAN | 3 | 3 |
| RAMSEY PROPERTY MANAGEMENT LLCActive | 20995 | OKLAHOMA CITY | 41 | 15 |
| RAMSEY PROPERTY MGMT INC | 9003 | OKLAHOMA CITY | 71 | 22 |
| RAMSEY RESOURCES | 13036 | OKLAHOMA CITY | 1 | 1 |
| RAMSEY VIRGINIA ANN | 16517 | SAPULPA | 0 | 0 |
| RAMSEY W M | 5311 | BARTLESVILLE | 0 | 0 |
| RAN-JEFF OIL COMPANY | 4359 | OKLAHOMA CITY | 1 | 1 |
| RANCH CREEK EXPLORATION LLCActive | 23147 | TULSA | 8 | 2 |
| RANCH OIL COMPANY | 20056 | GREENWOOD VILGE | 0 | 0 |
| RANCHO OIL CO | 1778 | DALLAS | 12 | 6 |
| RANCO RESOURCES | 12376 | FARMINGTON | 0 | 0 |
| RANDALL E JAMES OIL COMPANYActive | 19586 | GUTHRIE | 15 | 1 |
| RANDOLPH W H | 17686 | DUNCAN | 0 | 0 |
| RANDY AND JAN WALKER OIL COMPANY LLCActive | 21514 | KONAWA | 194 | 4 |
| RANDY INCActive | 17042 | HENNESSEY | 35 | 6 |
| RANGE ENERGY INC | 16408 | OKLAHOMA CITY | 0 | 0 |
| RANGE PRODUCTION COMPANY | 19608 | FORT WORTH | 72 | 15 |
| RANGE PRODUCTION COMPANY LLC | 22664 | FORT WORTH | 53 | 11 |
| RANGER DRILLING LLC | 21220 | CHICAGO | 3 | 1 |
| RANGER OPERATING COMPANY | 14750 | STILLWATER | 0 | 0 |
| RANGER SYSTEMS INCActive | 12818 | TULSA | 11 | 1 |
| RANKEN ENERGY CORPORATION | 17205 | EDMOND | 123 | 16 |
| RANKIN OIL & GAS LLC | 20574 | OKLAHOMA CITY | 0 | 0 |
| RANOCO INC | 14403 | OKLAHOMA CITY | 0 | 0 |
| RAPER BRICE OIL COMPANY LLC | 13948 | YALE | 21 | 5 |
| RAPER KARL E | 6586 | ADA | 0 | 0 |
| RAPP OIL & GAS | 3836 | OKLAHOMA CITY | 1 | 1 |
| RAPP OIL & GAS INC | 24065 | OKLAHOMA CITY | 1 | 1 |
| RAPTOR OIL COMPANY | 8174 | TULSA | 6 | 1 |
| RAR PROPERTIES LLCActive | 24880 | DUNCAN | 32 | 1 |
| RASKO EXPLORATION INC | 15426 | NORMAN | 0 | 0 |
| RASMUSSEN HAL J OPERATING INC | 17936 | MIDLAND | 3 | 2 |
| RATEX RESOURCES INC | 11170 | OKLAHOMA CITY | 2 | 1 |
| RATLIFF CITY TRUCKING INC | 18063 | RATLIFF CITY | 1 | 1 |
| RATLIFF DRILLING & EXPLO CO | 6713 | DUNCAN | 23 | 12 |
| RATLIFF OPERATING CORP | 19271 | AMARILLO | 7 | 1 |
| RATTS ROBERT V INC | 17222 | HURST | 0 | 0 |
| RATZLAFF BOB | 17210 | GROVE | 0 | 0 |
| RAUHS FRAC SERVICE LTD | 22338 | HOUSTON | 0 | 0 |
| RAVEN OIL & GAS CORPORATION | 20999 | SEDONA | 0 | 0 |
| RAVEN OIL & GAS PROPERTIES LLC | 22592 | ALVA | 2 | 1 |
| RAVEN RESOURCES LLC | 21001 | OKLAHOMA CITY | 1 | 1 |
| RAVIL INC | 16002 | EDMOND | 0 | 0 |
| RAW CRUDE OIL & GAS, L.L.C.Active | 20962 | NORMAN | 298 | 30 |
| RAW OIL AND GAS LLCActive | 25137 | Prague | 35 | 2 |
| RAW PRODUCTION LLCActive | 21297 | LINDSAY | 6 | 2 |
| RAWHIDE OPERATING INC | 22139 | NEW BRAUNFELS | 0 | 0 |
| RAY BRADLEY S | 18159 | DALLAS | 0 | 0 |
| RAY DAVID C | 19179 | NOWATA | 0 | 0 |
| RAY G H OIL COMPANY | 1783 | CHICKASHA | 12 | 2 |
| RAY GARY OIL & GAS | 12571 | ADA | 0 | 0 |
| RAY HERMAN | 12711 | HASKELL | 4 | 2 |
| RAY JOE TActive | 23189 | WANETTE | 1 | 1 |
| RAY JR HERMAN | 22548 | HASKELL | 1 | 1 |
| RAY RANDY S | 18484 | OKMULGEE | 1 | 1 |
| RAY ROCKY | 23359 | DUNCAN | 0 | 0 |
| RAY ROGER SHANE | 22447 | FORT GIBSON | 0 | 0 |
| RAY ROGER T | 21453 | BOYNTON | 0 | 0 |
| RAY'S OIL COMPANYActive | 11803 | BOYNTON | 94 | 3 |
| RAY/LAN RESOURCES INC | 17179 | NASH | 0 | 0 |
| RAYA ENERGY INC | 14788 | OKLAHOMA CITY | 2 | 1 |
| RAYBURN JR JAMES AActive | 23713 | DUSTIN | 2 | 1 |
| RAYDON EXPLORATION INCActive | 14683 | OKLAHOMA CITY | 88 | 17 |
| RAYDON PRODUCTION COMPANY | 13929 | OKLAHOMA CITY | 2 | 2 |
| RAYE OIL COMPANY | 20889 | VELMA | 0 | 0 |
| RAYLAND OPERATING LLCActive | 23674 | MORO | 44 | 2 |
| RAYS ENERGY PARTNERS LLCActive | 25132 | Dallas | 15 | 2 |
| RAZORBACK OIL INTERESTS LLC | 23168 | CLEVELAND | 0 | 0 |
| RB OPERATING COMPANY | 17467 | SHAWNEE | 85 | 25 |
| RBC EXPLORATION COMPANY | 14430 | TULSA | 2 | 1 |
| RBT OPERATING LLCActive | 24349 | CLEVELAND | 4 | 1 |
| RCF INVESTMENT CO LLC | 21350 | ELK CITY | 0 | 0 |
| RCK OIL AND GAS LLCActive | 23906 | DENTON | 90 | 3 |
| RCON INC | 16195 | BAKERSFIELD | 0 | 0 |
| RD TANK SERVICES LLC | 22941 | PAULS VALLEY | 0 | 0 |
| RDH ENTERPRISES INC | 14787 | OKLAHOMA CITY | 24 | 8 |
| RDM CONSULTANTS LLC | 22463 | DANA POINT | 0 | 0 |
| RDT TRUCKING INC | 20985 | CRESCENT | 0 | 0 |
| REACH ENERGY LIMITEDActive | 24828 | OKLAHOMA CITY | 0 | 0 |
| REACH OIL AND GAS COMPANY INCActive | 24558 | OKLAHOMA CITY | 57 | 5 |
| READING & BATES PETROLEUM CO | 5196 | TULSA | 16 | 6 |
| READY OIL COMPANY | 15841 | CLEVELAND | 1 | 1 |
| REAGAN DALE A | 16873 | TULSA | 0 | 0 |
| REAGAN PRODUCTION INCActive | 4298 | TERRAL | 21 | 1 |
| REAL ESTATE ENTERPRISES INC | 14893 | TULSA | 0 | 0 |
| REAL EXPLORATION CORPORATION | 15416 | DRUMRIGHT | 0 | 0 |
| REAL PRODUCTION MANAGEMENT LLCActive | 24543 | Tulsa | 74 | 4 |
| REAMES JR KEITH E | 16602 | DUNCAN | 6 | 1 |
| REAMES KEITH E | 7361 | DUNCAN | 4 | 1 |
| REAMY CLORATHO | 18853 | SKIATOOK | 0 | 0 |