| ELKHORN PRODUCTION CO INC | 14761 | OKLAHOMA CITY | 2 | 1 |
| ELLARD I W | 3000 | BIXBY | 66 | 3 |
| ELLEDGE & MEECE INVESTMENT LTD | 14927 | WELLSTON | 0 | 0 |
| ELLER DONALD E | 14928 | TULSA | 0 | 0 |
| ELLER JAMES E | 11018 | TULSA | 2 | 1 |
| ELLER LEE R | 18343 | SKIATOOK | 2 | 1 |
| ELLER ROGER S | 8395 | HENRYETTA | 1 | 1 |
| ELLIOTT & HUFFT OIL COMPANY | 6014 | SAPULPA | 1 | 1 |
| ELLIOTT & KELLY OIL COMPANY | 7211 | VINITA | 3 | 2 |
| ELLIOTT AND HUFFT OIL CO | 16085 | TULSA | 1 | 1 |
| ELLIOTT ERICActive | 24415 | TURPIN | 1 | 1 |
| ELLIOTT PRODUCTION | 19590 | BURKBURNETT | 0 | 0 |
| ELLIOTT RESOURCES INC | 13578 | ADA | 9 | 2 |
| ELLIS C H | 17954 | AMARILLO | 4 | 1 |
| ELLIS GRANT | 19937 | STONEWALL | 0 | 0 |
| ELLIS KEN OIL COMPANY | 6198 | WICHITA FALLS | 5 | 1 |
| ELLIS RESOURCES GROUP INCActive | 14921 | RHINELANDER | 9 | 1 |
| ELLIS ROBERT L | 17731 | MARAMEC | 0 | 0 |
| ELLIS ROLLAND | 6910 | HENRYETTA | 0 | 0 |
| ELLITHORP PRODUCTION LLC | 18692 | LINDSAY | 1 | 1 |
| ELLS JR HARRY A | 685 | ENGLEWOOD | 4 | 3 |
| ELLSWORTH DON L | 13890 | DUNCAN | 0 | 0 |
| ELM CREEK OPERATING LLC | 23574 | GAINESVILLE | 0 | 0 |
| ELM RIDGE EXPLORATION COMPANY LLC | 21707 | DALLAS | 1 | 1 |
| ELMORE JOHN G | 6210 | ARDMORE | 2 | 1 |
| ELMORE STANLEY G | 24333 | BARTLESVILLE | 0 | 0 |
| ELMTREE OIL CO INC | 16239 | BARTLESVILLE | 0 | 0 |
| ELSON OIL COMPANY | 690 | TULSA | 3 | 3 |
| ELVERA STILES TRUSTActive | 12664 | BROKEN ARROW | 3 | 1 |
| ELWOOD OIL COMPANY | 16308 | GREELEY | 0 | 0 |
| ELY HARVEY & NAVEDA | 11789 | RED ROCK | 1 | 1 |
| EMBASSY ENERGY LLC | 19992 | OKLAHOMA CITY | 1 | 1 |
| EMC EXPLORATION COMPANY INC | 14862 | OKLAHOMA CITY | 7 | 2 |
| EMCO OIL COMPANY | 15689 | OKLAHOMA CITY | 0 | 0 |
| EMDE & MCNEIL | 16746 | CARNEY | 1 | 1 |
| EMDE OIL & GAS CO | 18384 | CARNEY | 0 | 0 |
| EMERALD COAST ENERGY INC | 19653 | FORT WORTH | 0 | 0 |
| EMERALD EXPLORATION CO | 13838 | DENVER | 0 | 0 |
| EMERALD OIL COMPANY | 16666 | ROBINSON | 0 | 0 |
| EMERALD OPERATING COMPANY | 12591 | OKLAHOMA CITY | 2 | 2 |
| EMERFIELD ENERGY LLC | 24692 | ALLEN | 0 | 0 |
| EMERSON JAYActive | 21075 | CHECOTAH | 1 | 1 |
| EMERSON OIL COMPANY | 15761 | RALSTON | 1 | 1 |
| EMERY ARTHUR | 15108 | PERRY | 0 | 0 |
| EMERY BILLIE E | 10014 | SKIATOOK | 9 | 1 |
| EMERY EDWARD AActive | 16955 | TULSA | 9 | 1 |
| EMERY EXPLORATION CO INC | 14018 | OKLAHOMA CITY | 0 | 0 |
| EMI PETROLEUM CO | 10126 | TULSA | 5 | 2 |
| EMJO OPERATIONS INCActive | 19382 | MARLOW | 36 | 3 |
| EMO INC | 18340 | EUFAULA | 18 | 2 |
| EMPIRE ENERGY (MIDCON) LLC | 23745 | WICHITA | 2 | 1 |
| EMPIRE ENERGY E & P LLC | 23117 | WICHITA | 0 | 0 |
| EMPIRE LAND CORPORATION | 10246 | NEW ORLEANS | 0 | 0 |
| EMPIRE OILS PROPERTIES INC. | 16160 | CRESCENT | 4 | 3 |
| EMPIRE OPERATING LLCActive | 25019 | STERLING | 17 | 1 |
| EMPIRE PETROLEUM COMPANY | 11337 | HOUSTON | 5 | 2 |
| EMPIRE PETROLEUM LLCActive | 23280 | COTTONWOOD HEIGHTS | 5 | 1 |
| EMRICK TRUST | 693 | SEMINOLE | 0 | 0 |
| ENABLE GAS TRANSMISSION LLCActive | 18937 | HOUSTON | 62 | 2 |
| ENABLE OKLAHOMA INTRASTATE TRANSMISSION LLCActive | 3379 | HOUSTON | 54 | 1 |
| ENCANA ENERGY RESOURCES INC | 18248 | DENVER | 0 | 0 |
| ENCINO OPERATING LLCActive | 23270 | HOUSTON | 17 | 4 |
| ENCORE OKLAHOMA INC | 21528 | DENVER | 0 | 0 |
| ENCORE OPERATING INCActive | 24271 | EDMOND | 11 | 5 |
| ENCORE OPERATING LP | 20831 | PLANO | 12 | 6 |
| ENDEAVOR DRILLING, INC.Active | 25061 | Wagoner | 32 | 3 |
| ENDEAVOR ENERGY RESOURCES LPActive | 20857 | MIDLAND | 844 | 9 |
| ENDEAVOR NATURAL GAS LLC | 22555 | CLAREMORE | 2 | 1 |
| ENDEAVOR PRODUCTION LLC | 23260 | CLEO SPRINGS | 1 | 1 |
| ENDEVCO EUREKA LLC | 21927 | OKLAHOMA CITY | 3 | 1 |
| ENDICOTT MELVIN F | 5898 | PONCA CITY | 4 | 3 |
| ENERCO ENERGY CORPORATION | 18991 | NORMAN | 26 | 4 |
| ENERCO OPERATING CO | 18745 | SHREVEPORT | 0 | 0 |
| ENERCO OPERATING COMPANY | 18976 | SHREVEPORT | 0 | 0 |
| ENERFIN GATHERING-EAST LLCActive | 24468 | HOUSTON | 30 | 1 |
| ENERFIN RESOURCES I LIMITED PARTNERSHIP | 18249 | HOUSTON | 0 | 0 |
| ENERGAS CORPActive | 17100 | OKLAHOMA CITY | 10 | 5 |
| ENERGECO LLC | 18876 | LINCOLN | 3 | 1 |
| ENERGEX CORP | 17676 | SPRINGFIELD | 0 | 0 |
| ENERGEX CORPORATION | 13330 | HOUSTON | 0 | 0 |
| ENERGEX INC | 13124 | EDMOND | 4 | 3 |
| ENERGON OIL INC | 10063 | AMARILLO | 11 | 5 |
| ENERGY 2000 INC | 11914 | DALLAS | 0 | 0 |
| ENERGY ASSET MGMT INC | 19783 | TULSA | 0 | 0 |
| ENERGY CO OF TOMORROW INC | 12015 | DALLAS | 0 | 0 |
| ENERGY COMPLETIONS COMPANY | 14720 | TULSA | 4 | 2 |
| ENERGY DEV & EXPLO INC | 15713 | TONKAWA | 25 | 2 |
| ENERGY DEVELOPMENT CORPORATION | 17461 | ARDMORE | 0 | 0 |
| ENERGY DEVELOPMENT CORPORATION | 20685 | ARDMORE | 0 | 0 |
| ENERGY ENVIRONMENT INC | 18545 | HOLDENVILLE | 0 | 0 |
| ENERGY EQUITY COMPANY | 21923 | COLUMBUS | 0 | 0 |
| ENERGY EXCHANGE CORPORATION | 11723 | OKLAHOMA CITY | 1 | 1 |
| ENERGY EXPLORATION & PROD INC | 11273 | KANSAS CITY | 12 | 1 |
| ENERGY GROUP OF AMERICA INC | 21832 | BRANSON | 12 | 2 |
| ENERGY INVESTMENT GROUP INC | 19877 | BROKEN ARROW | 1 | 1 |
| ENERGY LEASE SERVICE INC | 12392 | DRUMRIGHT | 101 | 7 |
| ENERGY LOCATION & DEVELOPMENT | 8722 | TUCSON | 0 | 0 |
| ENERGY MANAGEMENT & EXPLO INC | 15593 | CITRUS HEIGHTS | 17 | 4 |
| ENERGY ON TAP LLCActive | 24282 | SALTILLO | 2 | 1 |
| ENERGY OPERATING CORPORATION | 20782 | PLANO | 3 | 2 |
| ENERGY OPERATIONS OKLAHOMA LP | 21760 | HOUSTON | 16 | 1 |
| ENERGY PETROLEUM PARTNERSHIP | 13725 | CATOOSA | 0 | 0 |
| ENERGY PRODUCING COMPANY INC | 11212 | TULSA | 7 | 1 |
| ENERGY PRODUCTION SERVICES LLC | 22437 | OKLAHOMA CITY | 9 | 5 |
| ENERGY QUEST INC | 7724 | DALLAS | 6 | 1 |
| ENERGY RESOURCES DEV INC | 21247 | BIXBY | 1 | 1 |
| ENERGY SOURCES INC | 8396 | HOUSTON | 4 | 3 |
| ENERGY SUPPORT SERVICES LLCActive | 24773 | CHEYENNE | 2 | 1 |
| ENERGY SYSTEMS | 14698 | OKLAHOMA CITY | 0 | 0 |
| ENERGY TRANSFER CRUDE TRUCKING LLCActive | 24633 | — | 0 | 0 |
| ENERGY TRANSFER CRUDE TRUCKING LLCActive | 24634 | — | 0 | 0 |
| ENERGYQUEST II LLC | 22708 | TOMBALL | 23 | 5 |
| ENERGYQUEST MANAGEMENT LLC | 21724 | HOUSTON | 3 | 2 |
| ENERGYVEST INC | 24303 | BIXBY | 0 | 0 |
| ENERMOST RESOURCES INC | 20129 | TULSA | 0 | 0 |
| ENERNET INC | 19111 | OKLAHOMA CITY | 1 | 1 |
| ENEROK INC | 15667 | SPERRY | 0 | 0 |
| ENEROPS LLC | 22442 | TAZEWELL | 0 | 0 |
| ENERQUEST OIL & GAS LLCActive | 20249 | OKLAHOMA CITY | 101 | 4 |
| ENERSEARCH INC | 12791 | SAND SPRINGS | 9 | 3 |
| ENERSOURCE PETROLEUM INCActive | 12072 | BIXBY | 17 | 3 |
| ENERSOURCE ROYALTY CORPORATION | 15840 | OKLAHOMA CITY | 15 | 6 |
| ENERTEC CORPORATION | 10576 | NOWATA | 13 | 3 |
| ENERVEST OPERATING LLC | 19848 | HOUSTON | 62 | 25 |
| ENERWEST INC | 12736 | OKLAHOMA CITY | 1 | 1 |
| ENEX RESOURCES CORPORATION | 15908 | KINGWOOD | 1 | 1 |
| ENEXCO INC | 17736 | DALLAS | 1 | 1 |
| ENEXCO USA LTD | 11752 | DALLAS | 1 | 1 |
| ENGEL DANNY | 21018 | ADA | 1 | 1 |
| ENGINE & COMPRESSOR SERVICE INC | 21061 | ELK CITY | 0 | 0 |
| ENGINEERED EQUIP SYS INC | 18875 | TULSA | 0 | 0 |
| ENGLAND HOMER & MARITA | 7285 | FT GIBSON | 0 | 0 |
| ENGLAND OPERATING LLC | 20030 | LITTLETON | 9 | 1 |
| ENGLISH BRANDON | 21716 | PAOLI | 0 | 0 |
| ENGLISH JAMES I | 13333 | MAYSVILLE | 0 | 0 |
| ENGULF DIVERSIFIED INC | 13920 | LAWTON | 0 | 0 |
| ENHANCED HYDROCARBONS INC | 15481 | CLAREMORE | 16 | 2 |
| ENID OIL & GAS | 20315 | ENID | 0 | 0 |
| ENIX PAULActive | 16098 | OKLAHOMA CITY | 1 | 1 |
| ENLOE JENNY L | 5008 | SKIATOOK | 1 | 1 |
| ENLOE ROBERT W | 15504 | SKIATOOK | 0 | 0 |
| ENMARC EXPLORATION CORPORATION | 11380 | BROOKFIELD | 0 | 0 |
| ENMARK GAS GATHERING | 16914 | DALLAS | 1 | 1 |
| ENMARK GAS GATHERING LP | 18553 | DALLAS | 6 | 2 |
| ENNIS BILL H | 5293 | SASAKWA | 3 | 1 |
| ENOCH ALTON O | 24559 | Duncan | 0 | 0 |
| ENRON CORPORATION | 12356 | HOUSTON | 0 | 0 |
| ENSERCH EXPLORATION INC | 19605 | HOUSTON | 42 | 13 |
| ENSIGHT ENERGY GROUP INC | 22063 | RICHARDSON | 10 | 1 |
| ENSIGHT III ENERGY MANAGEMENT LLC | 22033 | SHREVEPORT | 0 | 0 |
| ENSOURCE INC | 11920 | MIDLAND | 1 | 1 |
| ENSTAR CORPORATION | 16504 | HOUSTON | 0 | 0 |
| ENTERPRISE ENERGY EXPLORATION INCActive | 21418 | TULSA | 24 | 5 |
| ENTERPRISE ENERGY PROD CO INC | 20880 | TULSA | 2 | 1 |
| ENTERPRISE EXPLORATION INC | 17685 | TULSA | 0 | 0 |
| ENTERPRISE EXPLORATION INC | 19022 | TULSA | 0 | 0 |
| ENTERPRISE OPERATING INC | 14930 | OKLAHOMA CITY | 0 | 0 |
| ENTERPRISE PRODUCTS OPERATING LLCActive | 22247 | HOUSTON | 3 | 1 |
| ENTERPRISING ENTERPRISES INC | 14708 | TULSA | 0 | 0 |
| ENTEX PETROLEUM INC | 5067 | OKLAHOMA CITY | 9 | 3 |
| ENTRANSCO ENERGY LLCActive | 23126 | PLANO | 361 | 3 |
| ENVIRO CLEAN OPERATING LLC | 21730 | OKLAHOMA CITY | 0 | 0 |
| ENVIRONMENTAL DISPOSAL AND RECYCLING LLC | 23698 | OKLAHOMA CITY | 1 | 1 |
| ENVIROTEK FUEL SYSTEMS INC | 19147 | DALLAS | 38 | 2 |
| ENYART FAMILY TRUST (THE) | 24229 | PRYOR | 1 | 1 |
| ENYART MILLIE E ESTATE OF | 16360 | PRYOR | 0 | 0 |
| EOG (OKLAHOMA) INC | 234 | DENVER | 92 | 21 |
| EOG RESOURCES INCActive | 16231 | OKLAHOMA CITY | 834 | 33 |
| EOK OPERATING LLCActive | 23817 | OKLAHOMA CITY | 45 | 12 |
| EOK RESOURCE DEVELOPMENT | 18269 | KINTA | 0 | 0 |
| EOLA MUD DISPOSAL COMPANY | 18612 | MAYSVILLE | 0 | 0 |
| EOTT ENERGY CORPORATION | 6317 | OKLAHOMA CITY | 1 | 0 |
| EOTT ENERGY OPERATING LP | 19255 | HOUSTON | 0 | 0 |
| EP ENERGY E & P COMPANY LP | 21971 | HOUSTON | 30 | 12 |
| EP OPERATING LP | 13959 | DALLAS | 19 | 9 |
| EPIC LAND & CATTLE COMPANY LLC | 20186 | MUSKOGEE | 1 | 1 |
| EPLEY BOBBIE INC | 21255 | WILSON | 1 | 1 |
| EPOCH ENERGY CORPORATION | 15580 | TULSA | 8 | 5 |
| EPOCH RESOURCES INC | 14931 | ENID | 1 | 1 |
| EPOCH RESOURCES OF TEXAS INC | 17125 | PORT ARANSAS | 13 | 3 |
| EPOCH RESOURCES OPERATING LLCActive | 24481 | OKLAHOMA CITY | 0 | 0 |
| EPPERSON DWIGHT | 16749 | OKEMAH | 0 | 0 |
| EPPERSON JOHN R | 15826 | BARTLESVILLE | 0 | 0 |
| EPUMPS INC | 23466 | TULSA | 0 | 0 |
| EQUAL ENERGY US INC | 22671 | TULSA | 10 | 3 |
| EQUINOX OIL COMPANY INC | 12489 | THE WOODLANDS | 26 | 1 |
| EQUIPMENT LOTT INC THE | 18638 | HENNESSEY | 6 | 3 |
| EQUIQUIP | 16134 | CARONA | 0 | 0 |
| EQUITY DRILLING COMPANY INC | 12799 | DEWEY | 0 | 0 |
| EQUITY EXPORT OIL & GAS CO INC | 2732 | KANSAS CITY | 2 | 2 |
| EQUUS ENERGY PARTNERS LLC | 24695 | SKIATOOK | 0 | 0 |
| ERATZ INVESTMENTS INC | 19277 | DALLAS | 18 | 1 |
| ERC PETROLEUM LLCActive | 25021 | CRESENT | 9 | 2 |
| ERG OPERATING LLC | 24517 | TULSA | 0 | 0 |
| ERGON ENERGY ASSOCIATES LLC | 23258 | MONROE | 0 | 0 |
| ERICK DISPOSAL WELL INC | 14932 | ERICK | 0 | 0 |
| ERNST PETROLEUM COMPANY INC | 12691 | ARLINGTON | 8 | 3 |
| EROPKIN JIM | 18826 | KONAWA | 1 | 1 |
| ERROSAT ENERGY INC | 14676 | HOUSTON | 0 | 0 |
| ERVIN OIL CO | 12029 | SPERRY | 0 | 0 |