| LANDERS & MUSGROVE | 3512 | OKEMAH | 86 | 8 |
| LANDERS & MUSGROVE OIL CO. INC | 21353 | OKEMAH | 6 | 3 |
| LANDERS & WALDMAN INC | 13923 | OKEMAH | 83 | 12 |
| LANDERS OIL & GAS INC | 22259 | TULSA | 17 | 3 |
| LANDERS PRODUCTION COMPANY | 13654 | GRANITE | 1 | 1 |
| LANDMARK ENERGY LLCActive | 20994 | SEMINOLE | 40 | 5 |
| LANDMARK EXPLORATION CO | 11021 | TULSA | 4 | 3 |
| LANDMARK GAS CORPORATION | 15631 | DALLAS | 0 | 0 |
| LANDMARK GRAPHICS CORPORATION | 21991 | HOUSTON | 1 | 1 |
| LANDMARK OPERATING COMPANY | 22121 | WELTY | 4 | 1 |
| LANDMARK PRODUCTION COMPANY | 19649 | DALLAS | 1 | 1 |
| LANDMARK RESOURCES | 14882 | DALLAS | 2 | 1 |
| LANDOVER OIL & GAS CORPORATION | 12271 | STROUD | 0 | 0 |
| LANDRUM IDA OPAL | 17928 | MANNFORD | 0 | 0 |
| LANDRUM JAMES B & IDA OPAL | 4758 | MANNFORD | 2 | 1 |
| LANDRUM KENNETH G | 20823 | PARIS | 0 | 0 |
| LANDSEER EXPLORATION LLC | 23740 | THE WOODLANDS | 3 | 1 |
| LANE JIMMIE D | 12909 | AGRA | 0 | 0 |
| LANER OIL | 10012 | CLAREMORE | 7 | 1 |
| LANEX DRILLING COMPANY | 18575 | OKLAHOMA CITY | 0 | 0 |
| LANFIELD OPERATING LLC | 24531 | OWASSO | 0 | 0 |
| LANGE R W | 15440 | GARDEN CITY | 1 | 1 |
| LANGFORD ENERGY INC | 8788 | ENID | 2 | 2 |
| LANGHAM ENERGY INC | 14892 | HOUSTON | 0 | 0 |
| LANGHAM PETROLEUM EXPL CORP | 17076 | HOUSTON | 1 | 1 |
| LANGHAM PETROLEUM EXPLO CORP | 14157 | HOUSTON | 0 | 0 |
| LANGLEY COY A | 18259 | GRAHAM | 0 | 0 |
| LANGLEY HAROLDActive | 17046 | GRAHAM | 5 | 1 |
| LANKFORD & ASSOCIATES INC | 10157 | IRVING | 1 | 1 |
| LANKFORD BOBBY C | 17201 | CHANDLER | 0 | 0 |
| LANSBERG CHARLES | 15965 | OKLAHOMA CITY | 0 | 0 |
| LANSDEN OPERATING CO LLC | 18858 | NORMAN | 0 | 0 |
| LANSER PRODUCTION ENTERPRISES INC | 18405 | OKLAHOMA CITY | 0 | 0 |
| LAPETCO INCActive | 12358 | ADDISON | 23 | 9 |
| LAR-MIE PETROLEUM INC | 8642 | TULSA | 34 | 7 |
| LARAN OPERATING LLC | 20869 | DOVER | 11 | 6 |
| LAREAU ENERGY COMPANY INC | 20562 | NORMAN | 0 | 0 |
| LAREDO PETROLEUM INC | 22301 | TULSA | 7 | 3 |
| LARGESS DONALD P | 12788 | OKLAHOMA CITY | 0 | 0 |
| LARIAT ENERGY & SUPPLY CO INCActive | 18100 | HULBERT | 6 | 3 |
| LARIAT PETROLEUM INC | 10257 | INDEPENDENCE | 0 | 0 |
| LARIAT PETROLEUM INC | 20226 | TULSA | 0 | 0 |
| LARIO OIL AND GAS COMPANYActive | 1259 | WICHITA | 53 | 7 |
| LARKIN ENERGY COMPANY INCActive | 11754 | SASAKWA | 36 | 5 |
| LARKIN OIL CO | 4295 | SASAKWA | 0 | 0 |
| LARKS INVESTMENT INC | 17059 | WATONGA | 0 | 0 |
| LARKSPUR OPERATING LLCActive | 24870 | OKLAHOMA CITY | 224 | 17 |
| LARMORE JR JAMES E | 4730 | BARTLESVILLE | 13 | 1 |
| LARRON ENERGY CORPORATION | 20954 | EAST DUNDEE | 6 | 2 |
| LARRY BROWN DBA BROWN OIL COMPANY | 12867 | ARDMORE | 2 | 2 |
| LARRY SHERMAN OIL LLC | 20678 | CHANDLER | 17 | 2 |
| LARRY WOLFF DBA WOLFF'S OILFIELD SERVICEActive | 15456 | CUSHING | 37 | 4 |
| LARSON EXPLORATION COMPANY | 17651 | TULSA | 8 | 4 |
| LARSON OPERATING COMPANY | 21527 | OLMITZ | 1 | 1 |
| LARSON ROBERT C | 5202 | TULSA | 4 | 2 |
| LARUE ENERGY LLC | 23106 | WICHITA | 1 | 1 |
| LAS COLINAS OIL CORPORATION | 18122 | IRVING | 31 | 5 |
| LASHLEY COMPANY THE | 2547 | WALTERS | 5 | 1 |
| LASHLEY OIL COMPANY INC | 3271 | WALTERS | 0 | 0 |
| LASMO ENERGY CORPORATION | 14555 | BIXBY | 0 | 0 |
| LASMO ENERGY CORPORATION | 6875 | TULSA | 0 | 0 |
| LASSO OPERATING LLC | 22942 | CHASE | 3 | 1 |
| LAST RUN LLC | 22413 | CHANDLER | 0 | 0 |
| LATAN RESOURCES CORPORATION | 20321 | VELMA | 5 | 1 |
| LATENT LTDActive | 21968 | GROVE | 2 | 2 |
| LATHAM ROGER P C | 20227 | DALLAS | 3 | 1 |
| LATHAM ZACK L REVOCABLE TRUST | 4018 | HOUSTON | 0 | 0 |
| LATHERS JERRY B | 18432 | SOUTH HAVEN | 2 | 1 |
| LATIGO DRILLING CORPORATIONActive | 19522 | DUNCAN | 207 | 8 |
| LATIGO ENERGY COMPANY | 19858 | ENID | 0 | 0 |
| LATIGO OIL & GAS, INC.Active | 10027 | WOODWARD | 1,179 | 13 |
| LATIGO PETROLEUM INC | 21315 | HOUSTON | 2 | 2 |
| LATIGO PETROLEUM LLCActive | 24499 | Pampa | 178 | 5 |
| LAUCK & ASSOCIATES | 11556 | WALNUT CREEK | 6 | 3 |
| LAUGHLIN JACK D | 8014 | CUSHING | 4 | 1 |
| LAUGHLIN OIL | 19645 | CUSHING | 0 | 0 |
| LAUGHLIN OWEN W | 17430 | WOODWARD | 0 | 0 |
| LAUREL OPERATING COMPANYActive | 16146 | STILLWATER | 33 | 10 |
| LAUSEN FRED W | 1263 | HOUSTON | 0 | 0 |
| LAW E EDWARD | 21120 | NEWKIRK | 0 | 0 |
| LAW OPERATING INC | 12928 | DALLAS | 4 | 1 |
| LAW T W LLC | 21564 | MUSKOGEE | 0 | 0 |
| LAWCO EXPLORATION INCActive | 22688 | BENTONVILLE | 1 | 1 |
| LAWCO HOLDINGS LLCActive | 23190 | BENTONVILLE | 9 | 1 |
| LAWHORN EMMITT H | 21566 | CHECOTAH | 2 | 1 |
| LAWMASTER CLIFFORD | 3028 | BROKEN ARROW | 3 | 2 |
| LAWMASTER DRILLING COMPANY | 3029 | BROKEN ARROW | 37 | 6 |
| LAWRENCE BETTY | 12820 | NOWATA | 3 | 1 |
| LAWRENCE C F & ASSOC INC | 11946 | MIDLAND | 2 | 2 |
| LAWRENCE HOT OIL SERVICEActive | 4801 | LOCO | 13 | 2 |
| LAWRENCE JAMES LLCActive | 23824 | GUTHRIE | 4 | 2 |
| LAWRENCE JAMES OIL PROP INC | 17124 | CATOOSA | 2 | 1 |
| LAWRENCE ROY DRILLING CO INC | 1869 | PAWNEE | 30 | 3 |
| LAWS JOHN R | 16682 | ARDMORE | 0 | 0 |
| LAWS OPERATING CO LLC | 23511 | ARDMORE | 2 | 1 |
| LAWSON GEORGE E | 1267 | SAND SPRINGS | 2 | 1 |
| LAWSON JR EDWARD C | 21953 | TULSA | 1 | 1 |
| LAWSON OIL & GAS PROPERTIES INC | 15832 | OKLAHOMA CITY | 1 | 1 |
| LAWTON BROTHERS INCActive | 24345 | DECATUR | 27 | 6 |
| LAWYER DALE K | 15570 | OKLAHOMA CITY | 0 | 0 |
| LAY M A | 14150 | TULSA | 0 | 0 |
| LAYCO OIL | 10837 | OKMULGEE | 17 | 1 |
| LAYTON CONRAD R | 8808 | TULSA | 0 | 0 |
| LAZARUS MINING COMPANY INCActive | 22203 | OAK POINT | 1 | 1 |
| LAZY H INVESTMENT | 13649 | CHANDLER | 4 | 1 |
| LBD OPERATING COMPANY | 17538 | OKLAHOMA CITY | 1 | 1 |
| LBJ PRODUCTION INC | 18221 | OKMULGEE | 0 | 0 |
| LBW OIL COMPANY | 21205 | BARTLESVILLE | 0 | 0 |
| LCB RESOURCES LLC | 11977 | KINGFISHER | 53 | 12 |
| LCM OIL LLCActive | 25163 | Oklahoma City | 1 | 1 |
| LDI LLC | 22783 | SPEARMAN | 0 | 0 |
| LDO LLCActive | 24147 | SKIATOOK | 34 | 1 |
| LE NORMAN PARTNERS LLC | 20781 | DUNCAN | 17 | 3 |
| LEACH JR H L INVESTMENTS | 14982 | SCOTTSDALE | 1 | 1 |
| LEAGUE ENERGY GROUP LLC | 20609 | HOUSTON | 0 | 0 |
| LEAKE KEITH D | 7117 | WINFIELD | 0 | 0 |
| LEAMAN OIL COMPANY | 10329 | ROLAND | 23 | 1 |
| LEAR PETROLEUM CORP | 3994 | HOUSTON | 4 | 3 |
| LEAR PETROLEUM EXPLORATION INC | 11081 | DALLAS | 21 | 11 |
| LEASE HOLDERS ACQUISITIONS INC | 24250 | YUKON | 39 | 10 |
| LEASEHOLD MANAGEMENT CORPActive | 17592 | OKLAHOMA CITY | 85 | 7 |
| LEATHERNECK ENERGY GROUP INC | 21621 | ADDISON | 3 | 1 |
| LEAVELL RESOURCES CORPORATION | 16640 | HAYS | 16 | 5 |
| LEAVELLE R D | 14850 | TULSA | 1 | 1 |
| LEBAS OPERATING COMPANY INC | 19404 | GIDDINGS | 0 | 0 |
| LEBEN OIL CORPORATION | 4054 | TULSA | 0 | 0 |
| LEDFORD DAVID L | 19085 | OKMULGEE | 0 | 0 |
| LEDFORD DEWEY M | 16024 | RAMONA | 0 | 0 |
| LEDFORD JAN OIL & GASActive | 22672 | DUNCAN | 10 | 1 |
| LEDFORD'S FOUNDATION CORP | 20735 | LAWTON | 0 | 0 |
| LEE ROY INMANActive | 25258 | MOUNDS | 1 | 1 |
| LEE EDNA S MRS | 5470 | BARTLESVILLE | 0 | 0 |
| LEE ENERGY EXPLORATION LTD | 5454 | OKLAHOMA CITY | 4 | 3 |
| LEE ENERGY LLC | 19812 | EDMOND | 4 | 2 |
| LEE HERSHEL W INC | 18038 | LONE GROVE | 0 | 0 |
| LEE JR W E | 1277 | BEGGS | 6 | 1 |
| LEE OF TULSA OIL & GAS INC | 17476 | TULSA | 3 | 1 |
| LEE OIL COMPANY | 16645 | DALHART | 0 | 0 |
| LEE PETROLEUM SERVICE INC | 8709 | DUNCAN | 0 | 0 |
| LEE RICHARD C | 21138 | DEWEY | 0 | 0 |
| LEE RON | 19154 | EMORY | 1 | 1 |
| LEECO OIL COMPANY | 7851 | SKIATOOK | 8 | 3 |
| LEED ENERGY LLC | 21711 | PURCELL | 2 | 1 |
| LEEDE OIL & GAS INC | 8111 | ENGLEWOOD | 12 | 7 |
| LEEDEY DISPOSAL INC | 8886 | LEEDEY | 0 | 0 |
| LEEMAN DON J | 6471 | OKLAHOMA CITY | 12 | 9 |
| LEEMAN ENERGY CORPORATION | 8761 | OKLAHOMA CITY | 25 | 12 |
| LEEP OIL & GAS | 12758 | MUSKOGEE | 3 | 3 |
| LEESER RUSSELL E | 6428 | LITTLETON | 0 | 0 |
| LEFCO RESOURCES LLC | 22022 | HENRYETTA | 0 | 0 |
| LEFFLER-SMITH JOINT VENTURE | 14741 | NOWATA | 0 | 0 |
| LEG OIL INC | 13966 | TUCSON | 0 | 0 |
| LEG UP OPERATING COMPANY LLCActive | 22892 | TULSA | 97 | 1 |
| LEGACY - M & K CORPORATION | 20277 | DALLAS | 57 | 10 |
| LEGACY DEVELOPMENT INC | 15078 | DRUMRIGHT | 1 | 1 |
| LEGACY ENERGY SERVICES LLCActive | 24339 | Stillwater | 167 | 12 |
| LEGACY ENERGY TECHNOLOGIES LLC | 23484 | SAPULPA | 2 | 1 |
| LEGACY EXPLORATION LLCActive | 21996 | OKLAHOMA CITY | 8 | 1 |
| LEGACY OKLAHOMA OPERATORS LLCActive | 22670 | SHAWNEE | 33 | 1 |
| LEGACY PETROLEUM LLC | 22619 | TULSA | 0 | 0 |
| LEGACY RESERVES OPERATING LP | 22556 | MIDLAND | 10 | 5 |
| LEGADO MIDCON LLC | 22313 | THE WOODLANDS | 1 | 1 |
| LEGADO RESOURCES LLC | 22291 | THE WOODLANDS | 0 | 0 |
| LEGEND ENERGY CORPORATION | 19784 | STILLWATER | 8 | 2 |
| LEGEND PROPERTIES JOINT VENTURE | 13986 | FT WORTH | 2 | 1 |
| LEGGETT OIL COMPANY | 14785 | DALLAS | 2 | 1 |
| LEHART D B INC | 20544 | STILLWATER | 0 | 0 |
| LEHI OIL INC | 10955 | SHAWNEE | 1 | 1 |
| LEIGH OPERATING CO | 15880 | DALLAS | 9 | 5 |
| LEIS VIC DRILLING | 17369 | YATES CENTER | 0 | 0 |
| LEIST BRION CLYDEActive | 22682 | BOYNTON | 4 | 1 |
| LELAND CHAPMAN DBA CHAPMAN OIL COMPANYActive | 15972 | DUNCAN | 47 | 1 |
| LEMA PETROLEUM INCActive | 8411 | SEMINOLE | 52 | 7 |
| LEMLEY OIL CORPORATIONActive | 15568 | SULPHUR | 36 | 1 |
| LEMMONS DANNY GUY | 13010 | COPAN | 1 | 1 |
| LEMMONS GARY L | 20570 | LAVERNE | 1 | 1 |
| LEMMONS JACK | 11076 | CLEVELAND | 0 | 0 |
| LEMMONS JR GUY | 13012 | COPAN | 0 | 0 |
| LENCO OIL & GAS INC | 21096 | WETUMKA | 2 | 1 |
| LENHART OIL COMPANY | 2518 | CASHION | 1 | 1 |
| LENORMAN ENERGY CORPORATION | 19671 | DUNCAN | 29 | 5 |
| LEOH MANAGEMENT COMPANY | 16089 | OKLAHOMA CITY | 1 | 1 |
| LEONARD BROTHERS OPERATING CO | 14098 | FORT WORTH | 8 | 5 |
| LEONARD DANIEL M | 12344 | FORT WORTH | 1 | 1 |
| LEONARD RESOURCES | 11032 | FORT WORTH | 8 | 4 |
| LEONARDS TRANSPORT INC | 9221 | PAULS VALLEY | 0 | 0 |
| LEONOCO INC | 11318 | OKLAHOMA CITY | 6 | 2 |
| LEOPOLD OIL COMPANY | 5741 | BARTLESVILLE | 0 | 0 |
| LERBLANCE JR W P ESTATE | 3643 | HARTSHORNE | 1 | 1 |
| LERBLANCE JR W P FAMILY LP | 22079 | HARTSHORNE | 0 | 0 |
| LERBLANCE RICHARD CActive | 23744 | HARTSHORNE | 6 | 1 |
| LESABRE SERVICES, LLCActive | 25192 | APACHE | 1 | 1 |
| LESTER JOAN | 1282 | SAND SPRINGS | 3 | 1 |
| LESTER OIL & GAS COMPANY | 12676 | BRISTOW | 0 | 0 |
| LEV-X CORPORATION | 14823 | ARDMORE | 0 | 0 |
| LEVINSON PARTNERS CORP | 17105 | DENVER | 1 | 1 |
| LEVINSON SILVAN E | 1284 | TULSA | 7 | 2 |
| LEWBET INCActive | 20732 | PERRY | 6 | 2 |
| LEWIS A. HEMBREE PRODUCTION COMPANYActive | 999 | SHAWNEE | 37 | 2 |
| LEWIS BRAD | 21223 | MULHALL | 0 | 0 |