| S & W ENGINE SUPPLY | 1888 | OKLAHOMA CITY | 3 | 1 |
| S & W ENGINE SUPPLY INC | 19102 | OKLAHOMA CITY | 1 | 1 |
| S & W OIL CO | 4169 | PONCA CITY | 0 | 0 |
| S & W OIL COMPANY | 18459 | FREDERICK | 0 | 0 |
| S & W TRANSPORTS INCActive | 4775 | VELMA | 1 | 1 |
| S A C OPERATING INC | 18093 | WOODWARD | 0 | 0 |
| S AND H OIL AND GAS LLC | 23687 | FAIRFIELD | 0 | 0 |
| S E N PRODUCTION CO INC | 15264 | AUSTIN | 0 | 0 |
| S H PRODUCTION LLCActive | 7106 | TULSA | 44 | 1 |
| S L M W ENERGY COMPANY | 13509 | TULSA | 3 | 2 |
| S M BROTHERS INVESTMENTS LLCActive | 5880 | DENVER | 1 | 1 |
| S O S RECOVERY INC | 7595 | ENID | 8 | 1 |
| S R & S OIL COMPANY | 15437 | MOUNDS | 0 | 0 |
| S R W OILActive | 4995 | LAVERNE | 1 | 1 |
| S S & L OIL AND GAS PROP INC | 20628 | OKLAHOMA CITY | 1 | 1 |
| S S OPERATORS | 19865 | MARCO ISLAND | 1 | 1 |
| S T DRILLING COMPANY | 13847 | SEMINOLE | 0 | 0 |
| S T INDUSTRIES INC | 14752 | DRUMRIGHT | 11 | 3 |
| S T RESOURCES, INCORPORATED | 23274 | AMES | 1 | 1 |
| S W A P INC | 9216 | MCLOUD | 0 | 0 |
| S W M ENERGY | 14909 | PAMPA | 0 | 0 |
| S&S WATER, LLCActive | 25057 | ELK CITY | 1 | 1 |
| S&V OIL AND GAS CO LLCActive | 25029 | HASTINGS | 3 | 1 |
| S-C PRODUCTION COMPANY | 16546 | LAWTON | 0 | 0 |
| S/H PETROLEUM CORPORATION | 15866 | HENNESSEY | 5 | 3 |
| SABCO OPERATING COMPANY LLC | 23927 | HOUSTON | 0 | 0 |
| SABER INDUSTRIES LPActive | 22233 | DALLAS | 0 | 0 |
| SABER RESOURCES INC | 14124 | PAMPA | 1 | 1 |
| SABINE OIL & GAS CORPORATION | 763 | HOUSTON | 70 | 15 |
| SABINE OIL & GAS LLC | 23159 | HOUSTON | 0 | 0 |
| SABIO OIL & GAS INC | 5930 | DALLAS | 0 | 0 |
| SABLE PETROLEUM CORP | 13947 | TULSA | 0 | 0 |
| SABON PETROLEUM CORP | 10980 | HATTIESBURG | 0 | 0 |
| SABOS GEORGE U | 8474 | TULSA | 9 | 2 |
| SABRE ENERGY SERVICES | 20736 | LINDSAY | 0 | 0 |
| SABRE MAGNUM ENERGY INC | 16730 | TULSA | 3 | 1 |
| SABRE OPERATING INC | 18313 | WICHITA FALLS | 2 | 1 |
| SACKETT JAMES BActive | 24357 | HANNA | 11 | 1 |
| SACO OIL CORPORATION | 13624 | SAPULPA | 4 | 1 |
| SADDLEBACK OIL CO | 8625 | TULSA | 7 | 3 |
| SADLER F K | 10341 | MUSKOGEE | 0 | 0 |
| SADLER RASS BActive | 20335 | HASKELL | 2 | 1 |
| SAFE EARTH MANAGEMENT INC | 19742 | HAMMON | 0 | 0 |
| SAFE EARTH MANAGEMENT LLCActive | 23604 | HAMMON | 2 | 2 |
| SAGA EXPLORATION INC | 11870 | LAKEWOOD | 2 | 1 |
| SAGE DRILLING CO INC | 10803 | WICHITA | 0 | 0 |
| SAGE ENERGY COMPANY | 12988 | SAN ANTONIO | 9 | 2 |
| SAGE NR OK LLCActive | 24136 | TULSA | 24 | 3 |
| SAGE OIL COMPANY | 16190 | OKLAHOMA CITY | 2 | 1 |
| SAGELY FLOYD E PROPERTIES LTD | 20174 | FORT SMITH | 4 | 2 |
| SAGNIBENE JOE F | 17955 | CELINA | 0 | 0 |
| SAIBER MICHAEL L & LORA L | 13733 | SAXONBURG | 1 | 1 |
| SAILOR VIRGIL R | 16461 | ELKHART | 0 | 0 |
| SAJAC ENERGY COMPANY LLCActive | 19467 | DUNCAN | 109 | 3 |
| SAJE PRODUCTION LLCActive | 25259 | Cleveland | 7 | 1 |
| SAKAL ENERGY INC | 18507 | HOMINY | 3 | 2 |
| SAKAL ENERGY LLCActive | 22686 | SKIATOOK | 8 | 1 |
| SAKE OIL INC | 21305 | NARDIN | 0 | 0 |
| SALEM DEVELOPMENT | 13932 | MUSKOGEE | 0 | 0 |
| SALES RONNIE D | 16419 | ADA | 0 | 0 |
| SALISBURY A E OR MARY LEE | 4901 | OKMULGEE | 1 | 1 |
| SALLEE OIL COMPANY | 4490 | COLLINSVILLE | 0 | 0 |
| SALLEE OIL CORPORATIONActive | 15458 | COLLINSVILLE | 88 | 4 |
| SALLEE RUTH | 1892 | OKLAHOMA CITY | 0 | 0 |
| SALSAM LLC | 24254 | EDMOND | 0 | 0 |
| SALT CREEK ENERGY COMPANY LLC | 21477 | SHAWNEE | 2 | 1 |
| SALT CREEK PRODUCTION INC | 23794 | BIG SPRING | 13 | 3 |
| SALT FORK PRODUCERS INC | 5047 | POND CREEK | 5 | 3 |
| SALT PLAINS STORAGE INC | 21046 | CALGARY ALBERTA | 1 | 1 |
| SALT PLAINS STORAGE LLC | 21965 | HOUSTON | 2 | 1 |
| SALTY DOG DISPOSAL LLCActive | 22729 | CEMENT | 2 | 1 |
| SALY OIL & GAS INC | 8498 | DEPEW | 2 | 1 |
| SAM W MAYS JR LLC | 22629 | EUREKA | 8 | 2 |
| SAMARAS JIMMIE K | 15818 | MUSKOGEE | 0 | 0 |
| SAMEDAN OIL CORPORATION | 1896 | ARDMORE | 404 | 44 |
| SAMHILL LLCActive | 23504 | TONKAWA | 65 | 2 |
| SAMIS OIL COMPANY INC | 19220 | OKLAHOMA CITY | 0 | 0 |
| SAMM OIL & GAS INC | 18012 | OKLAHOMA CITY | 0 | 0 |
| SAMOTLOR PETROLEUM L.L.C. | 20272 | DALLAS | 0 | 0 |
| SAMPSON ENERGY INC | 22973 | CARROLLTON | 0 | 0 |
| SAMSON EXPLORATION LLC | 23560 | TULSA | 0 | 0 |
| SAMSON GAS PRODUCING COMPANY | 17385 | TULSA | 1 | 1 |
| SAMSON HYDROCARBONS CO. | 19508 | TULSA | 2 | 2 |
| SAMSON HYDROCARBONS COMPANY | 7033 | TULSA | 21 | 13 |
| SAMSON RESOURCES COMPANY | 5415 | TULSA | 518 | 47 |
| SAMUEL JOE L | 6511 | TULSA | 9 | 2 |
| SAN ANCO ENERGY CORPORATION | 11209 | TULSA | 5 | 3 |
| SAN ANDREAS EXPLORATION CO | 16043 | EDMOND | 0 | 0 |
| SAN JACINTO ENERGY LP | 17479 | WESTMINSTER | 5 | 1 |
| SAN MARCO PETROLEUM INC | 19578 | DENVER | 0 | 0 |
| SANCTOLEUM ENERGY GROUP LTD. CO.Active | 25113 | OKLAHOMA CITY | 61 | 7 |
| SAND BOY PRODUCTION COMPANYActive | 16702 | BARTLESVILLE | 12 | 1 |
| SAND CREEK OIL AND GAS OPERATING LLC | 24698 | OKLAHOMA CITY | 0 | 0 |
| SAND CREEK OPERATING LLCActive | 23210 | NASH | 1 | 1 |
| SAND CREEK RESOURCES LLCActive | 24444 | WOODWARD | 50 | 3 |
| SAND CREEK WELL SERVICE LLC | 21448 | EDMOND | 0 | 0 |
| SAND POINT LLC | 20841 | Oklahoma City | 1 | 1 |
| SAND POINT OPERATING LLCActive | 24483 | KONAWA | 3 | 1 |
| SAND POINT PRODUCTION INCActive | 18650 | OKLAHOMA CITY | 38 | 10 |
| SAND RESOURCES LLC | 16968 | NORMAN | 3 | 3 |
| SAND ROCK PETROLEUM CO INC | 10140 | WELEETKA | 12 | 4 |
| SAND SPRINGS OIL & GAS CO | 5132 | TULSA | 4 | 4 |
| SANDA ENERGY CORP | 17556 | SALADO | 1 | 1 |
| SANDDOLLAR INCOME OPERATIONS LLC | 23237 | CUSHING | 1 | 1 |
| SANDEFER PETROLEUM COMPANY | 12290 | HOUSTON | 1 | 1 |
| SANDER DISPOSAL INC | 6929 | ENID | 4 | 1 |
| SANDERS HARLIN & LADONNA | 19548 | COWETA | 0 | 0 |
| SANDERS MARVIN | 18530 | LAMAR | 0 | 0 |
| SANDERS W T | 7004 | SILOAM SPRINGS | 6 | 2 |
| SANDERS-PRICHARD OIL CO INC | 10977 | TECUMSEH | 1 | 1 |
| SANDHILL DISPOSAL LLC | 22723 | HINTON | 0 | 0 |
| SANDIA EXPLORATION CO | 10553 | EDMOND | 3 | 3 |
| SANDIA OPERATING CORPORATION | 17281 | SAN ANTONIO | 0 | 0 |
| SANDLER RAYMOND C | 1905 | LOS ANGELES | 3 | 1 |
| SANDLOT OIL & GAS LLCActive | 24546 | GRUVER | 8 | 2 |
| SANDOX PETROLEUM CORP | 12206 | OKLAHOMA CITY | 4 | 1 |
| SANDRA CORPORATION (THE) | 15714 | PAMPA | 5 | 2 |
| SANDRA TURNER DBA GRAND LAKE RESOURCESActive | 15785 | HENNESSEY | 5 | 3 |
| SANDRIDGE ENERGY INC | 22110 | OKLAHOMA CITY | 32 | 7 |
| SANDRIDGE EXPLORATION & PRODUCTION LLCActive | 22281 | OKLAHOMA CITY | 1,813 | 16 |
| SANDROCK ENERGY LLCActive | 24492 | LUTHER | 15 | 2 |
| SANDROCK OIL CO | 12976 | MOUNDS | 0 | 0 |
| SANDS ENERGY INC | 14768 | BETHANY | 7 | 1 |
| SANDS EXPLORATION | 14834 | SHREVEPORT | 0 | 0 |
| SANDS EXPLORATION CORPORATION | 15291 | CARLSBAD | 1 | 1 |
| SANDSTONE HILLS ENERGY INC | 19248 | SEMINOLE | 3 | 1 |
| SANDSTONE OIL & GAS INC | 15811 | BIXBY | 0 | 0 |
| SANDSTONE RESOURCES INC | 10639 | NEWKIRK | 0 | 0 |
| SANDSTONE RESOURCES INC | 5151 | ST JOESPH | 0 | 0 |
| SANDY PETROLEUM INC | 18881 | SHAWNEE | 5 | 2 |
| SANFORD & JENKINS | 6585 | HENRYETTA | 2 | 1 |
| SANFORD CASONDRA | 11412 | ADA | 7 | 5 |
| SANFORD TEDDY H | 6835 | PAWNEE | 2 | 1 |
| SANGUINE GAS EXPLORATION LLCActive | 21381 | TULSA | 286 | 17 |
| SANIBEL ENERGY INC | 15735 | METAIRIE | 0 | 0 |
| SANNER GAIL B & GAYLE | 16754 | DUNCAN | 0 | 0 |
| SANNER JEFFREY B dba BRYANT LYN PRODUCTIONActive | 17873 | VELMA | 11 | 1 |
| SANNER OIL CO LLCActive | 23043 | DUNCAN | 38 | 1 |
| SANNER OIL COMPANY | 17134 | VELMA | 3 | 2 |
| SANOOK INC | 17413 | OKLAHOMA CITY | 23 | 12 |
| SANQUIP LLC | 21589 | OKLAHOMA CITY | 1 | 1 |
| SANTA FE BRAUN INC | 17391 | DALLAS | 0 | 0 |
| SANTA FE ENERGY COMPANY | 452 | MIDLAND | 6 | 4 |
| SANTA FE ENERGY OPERATING PARTNER LP | 15633 | MIDLAND | 7 | 5 |
| SANTA FE MINERALS | 17517 | DALLAS | 7 | 6 |
| SANTA FE MINERALS INC | 11779 | DALLAS | 100 | 26 |
| SANTA FE OPERATING, LLCActive | 25047 | Denver | 434 | 6 |
| SANTA FE-ANDOVER OIL CO | 5179 | TULSA | 22 | 6 |
| SANTA RITA CORP THE | 10932 | ARNETT | 0 | 0 |
| SANTO RESOURCES INC | 12215 | OKLAHOMA CITY | 7 | 3 |
| SAP ACQUISITION CORPORATION | 21133 | OKLAHOMA CITY | 0 | 0 |
| SAP SOIL FARM LLCActive | 23602 | OKLAHOMA CITY | 0 | 0 |
| SAQUS OIL CO | 4955 | OKLAHOMA CITY | 1 | 1 |
| SARA RESOURCES LLCActive | 25101 | OKLAHOMA CITY | 0 | 0 |
| SARGENT AND HORTON PLUGGING | 20608 | TYRONE | 1 | 1 |
| SARITA OIL CO | 4029 | OKLAHOMA CITY | 1 | 1 |
| SARLOT RAYMOND R | 14429 | TARZANA | 0 | 0 |
| SARLOT-KANTARJIAN | 11336 | LOS ANGELES | 0 | 0 |
| SASAKWA OPERATING LLCActive | 20050 | OKLAHOMA CITY | 55 | 2 |
| SASSER COMPANY INC (THE)Active | 13143 | PERKINS | 6 | 2 |
| SATURN OIL & GAS CO INC | 12474 | OKLAHOMA CITY | 0 | 0 |
| SAUCIER OIL & GAS LLCActive | 24635 | CEMENT | 6 | 1 |
| SAULSBERRY JAMES | 14707 | OWASSO | 1 | 1 |
| SAUTER OPERATING CO LLCActive | 24066 | NOWATA | 3 | 1 |
| SAVAGE DON M | 12237 | SEMINOLE | 0 | 0 |
| SAVAGE EXPLORATION INC | 18256 | AUSTIN | 0 | 0 |
| SAVANT ENERGY LTD | 15150 | OKLAHOMA CITY | 2 | 1 |
| SAVARIA RESOURCES LTD | 12970 | TULSA | 0 | 0 |
| SAVOY ENERGY LP | 20930 | TRAVERSE CITY | 1 | 1 |
| SAVOY OIL & GAS INC | 19088 | TRAVERSE CITY | 0 | 0 |
| SAVVE INC | 11329 | KAUFMAN | 0 | 0 |
| SAWTOOTH ENERGY COMPANY, L.L.C.Active | 24943 | OKLAHOMA CITY | 0 | 0 |
| SAWYER LEO | 13529 | DEPEW | 1 | 1 |
| SAXON OIL COMPANY | 7334 | DALLAS | 14 | 5 |
| SAYLOR WELDON W | 15185 | TULSA | 2 | 2 |
| SBOC LLCActive | 24578 | HALLETT | 27 | 2 |
| SBOG LLC | 24241 | DALLAS | 0 | 0 |
| SBR OIL LLCActive | 22828 | ADA | 4 | 1 |
| SC ENVIROMENTAL LLC | 23700 | VELMA | 0 | 0 |
| SCALING HARRY S | 17481 | FORT WORTH | 0 | 0 |
| SCAMBLER ENERGY GROUP LTD CO | 21266 | COLONY | 4 | 3 |
| SCANA EXPLORATION COMPANY | 13840 | HOUSTON | 4 | 3 |
| SCANA PETROLEUM RESOURCES INC | 19233 | HOUSTON | 6 | 4 |
| SCANA PRODUCTION COMPANY | 16798 | HOUSTON | 1 | 1 |
| SCARTH OIL & GAS CO | 7947 | AMARILLO | 1 | 1 |
| SCAT WELL SERVICE | 16211 | KIEFER | 0 | 0 |
| SCAVENGER OIL COMPANY INC | 17863 | OWASSO | 3 | 2 |
| SCAYERS OIL & GAS INC | 21177 | OKLAHOMA CITY | 0 | 0 |
| SCHAD JEFFREY M | 21044 | MANNFORD | 0 | 0 |
| SCHATZ RICHARD L | 22717 | KAW CITY | 0 | 0 |
| SCHECK OIL OPERATION | 22630 | RUSSELL | 1 | 1 |
| SCHETTLER WILLIAM D | 21502 | FLETCHER | 0 | 0 |
| SCHIFF & JACKSON OIL PRODUCERS | 6448 | DALLAS | 1 | 1 |
| SCHIRMER JEANNE | 11886 | TULSA | 1 | 1 |
| SCHLACHTER DAVID A | 1918 | DALLAS | 13 | 1 |
| SCHMID PROPERTIES INCActive | 17615 | HICO | 23 | 8 |
| SCHMIDT W H & SONS INC | 8252 | NORMAN | 3 | 1 |
| SCHMIDTLEIN BRIAN | 21980 | BROKEN ARROW | 1 | 1 |
| SCHOFIELD JOHN O | 19214 | EVANSVILLE | 0 | 0 |
| SCHOGGINS BENNY | 19316 | MCALESTER | 1 | 1 |