| NEEL BOB INC | 12927 | NORMAN | 0 | 0 |
| NEESE INVESTMENTS, LLCActive | 25042 | Wetumka | 2 | 1 |
| NEESE OIL COMPANY | 7748 | AMARILLO | 7 | 3 |
| NEG OPERATING LLC | 21101 | OKLAHOMA CITY | 0 | 0 |
| NEHA ENERGY PARTNERSHIP | 11848 | DURANT | 7 | 2 |
| NEHER JAMES M | 12593 | OKLAHOMA CITY | 0 | 0 |
| NEHER JIM | 7093 | OKLAHOMA CITY | 0 | 0 |
| NEILSON INCActive | 21475 | NASH | 7 | 3 |
| NELCO OIL & GAS | 20848 | DUNCAN | 21 | 1 |
| NELSON BILLY L TRUST | 18668 | OKMULGEE | 0 | 0 |
| NELSON EXPLORATION CORPORATION | 10578 | CLEVELAND | 40 | 7 |
| NELSON JOE BOB | 21089 | CHICKASHA | 0 | 0 |
| NELSON OIL COMPANY | 6812 | OKLAHOMA CITY | 0 | 0 |
| NEMAHA ENVIRONMENTAL SERVICES LLCActive | 23447 | KREMLIN | 2 | 1 |
| NEMAHA OIL AND GAS OPERATING LLC | 23335 | HOUSTON | 0 | 0 |
| NEMAHA RESOURCES LLC | 20582 | TULSA | 0 | 0 |
| NEMAHA SERVICES INC | 19107 | EDMOND | 1 | 1 |
| NEMAHA WATER SERVICES LP | 23216 | PLANO | 1 | 1 |
| NEODYNE DRILLING CORPORATIONActive | 18979 | TULSA | 29 | 3 |
| NEOK PRODUCTION COMPANY LLCActive | 21838 | NOWATA | 166 | 3 |
| NEON GAS LLC | 21993 | EDMOND | 0 | 0 |
| NEON GAS LLC | 24394 | EDMOND | 0 | 0 |
| NEOSHO OPERATING SERVICES LLC | 22958 | NEOSHO | 58 | 2 |
| NERVOUS ENERGY | 12735 | JENNINGS | 0 | 0 |
| NESS ENERGY OPERATING, LLC | 22970 | EDMOND | 0 | 0 |
| NESS OIL CO | 17657 | MCPHERSON | 0 | 0 |
| NETWORK SUPPORT GROUP LLCActive | 23886 | JENNINGS | 4 | 1 |
| NEUMEIER ED & JUDITH | 18860 | CLAREMORE | 0 | 0 |
| NEVADA NATURAL INC | 2899 | TULSA | 0 | 0 |
| NEW CENTURY PETROLEUM CORP | 16933 | OKLAHOMA CITY | 17 | 5 |
| NEW DISCOVERY ASSOC INC | 11566 | TULSA | 0 | 0 |
| NEW DOMINION LLCActive | 20585 | TULSA | 534 | 9 |
| NEW ENERGY CORPORATION | 16532 | RANCHO SANTA FE | 3 | 2 |
| NEW ERA GAS CO INC | 20666 | BULL SHOALS | 1 | 1 |
| NEW GULF OPERATING LLC | 22712 | TULSA | 0 | 0 |
| NEW GULF RESOURCES LLC | 22815 | TULSA | 1 | 1 |
| NEW HORIZON RESOURCES LLCActive | 24675 | HOUSTON | 35 | 5 |
| NEW JERESY NATURAL RES CO | 18790 | TULSA | 0 | 0 |
| NEW LIFT INC | 19239 | NOWATA | 127 | 5 |
| NEW LONDON OIL INC | 17405 | SAN ANTONIO | 2 | 1 |
| NEW RESERVES GROUP INC | 12054 | OKLAHOMA CITY | 0 | 0 |
| NEW RESERVOIR OPERATING LLC | 23109 | TULSA | 0 | 0 |
| NEW SOURCE ENERGY PARTNERS LP | 23767 | OKLAHOMA CITY | 0 | 0 |
| NEW TREND RESOURCES INC | 8627 | JENKS | 7 | 3 |
| NEW WEST ENERGY | 12587 | FT. WORTH | 2 | 2 |
| NEWARK ENERGY 1-4 LTD | 15471 | NEWPORT BEACH | 0 | 0 |
| NEWBERRY RESOURCES INC | 7075 | TEMPE | 1 | 1 |
| NEWBY JACK V | 16233 | CLAREMORE | 2 | 1 |
| NEWBY LARRY & BONNIE | 19536 | SEMINOLE | 0 | 0 |
| NEWCO INC | 19206 | OKLAHOMA CITY | 9 | 1 |
| NEWELL OIL AND GAS LLCActive | 21892 | SHAWNEE | 32 | 1 |
| NEWFRONTIER DRILLING & PRODUCTION LLC | 24170 | BROKEN ARROW | 0 | 0 |
| NEWKUMET EXPLORATION INC | 19935 | MIDLAND | 13 | 5 |
| NEWLIN JR I J | 13193 | OKLAHOMA CITY | 1 | 1 |
| NEWPARK DRILLING FLUIDS LLC | 20484 | CLINTON | 0 | 0 |
| NEWPEK LLC | 23340 | IRVING | 0 | 0 |
| NEWTON ROBERT & PEGGY | 16212 | OOLOGAH | 0 | 0 |
| NEXCO INC | 17834 | OKLAHOMA CITY | 0 | 0 |
| NEXSTREEM CORPORATION | 23505 | WILSON | 0 | 0 |
| NEXTGEN WELLS, LLCActive | 25188 | SARCOXIE | 6 | 4 |
| NEXUS BSP LLC | 23864 | DENVER | 0 | 0 |
| NEXUS RESOURCES CORPORATION | 14162 | DRUMRIGHT | 20 | 7 |
| NEY CHUCK E | 17980 | CLAREMORE | 1 | 1 |
| NFC PETROLEUM CORPORATION | 1307 | TULSA | 5 | 4 |
| NFCDA ENERGY LLCActive | 24504 | EDMOND | 187 | 9 |
| NGO VAN TA | 21216 | MUSKOGEE | 0 | 0 |
| NHH INC | 18260 | OKLAHOMA CITY | 0 | 0 |
| NI-JEAN INC | 18512 | SHAWNEE | 3 | 2 |
| NICA ENERGY INC | 17161 | YUKON | 0 | 0 |
| NICHOLAS EXPLORATION INC | 14071 | OKLAHOMA CITY | 2 | 2 |
| NICHOLAS OPERATING COMPANY | 16049 | OKLAHOMA CITY | 2 | 2 |
| NICHOLS HILLS OIL & GAS CORP | 13166 | OKLAHOMA CITY | 2 | 2 |
| NICHOLS IRL A TRUST B | 1568 | DUNCAN | 1 | 1 |
| NICHOLS OPERATING LLC | 24005 | FORT BRANCH | 1 | 1 |
| NICHOLS ROBERT T | 15637 | ANADARKO | 0 | 0 |
| NICHOLS WATER SERVICE | 24832 | — | 0 | 0 |
| NICHOLS WATER SERVICE INCActive | 13447 | FORGAN | 5 | 1 |
| NICKELL OIL COMPANY | 19542 | WALTERS | 0 | 0 |
| NICKLE AUDREY O | 18323 | OKMULGEE | 0 | 0 |
| NICOM OPERATING | 19611 | POND CREEK | 1 | 1 |
| NICOR DRILLING COMPANY | 13011 | TULSA | 0 | 0 |
| NICOR SUPPLY COMPANY | 4228 | GOLDEN | 1 | 1 |
| NIELSON & ASSOCIATES INC | 20334 | CODY | 4 | 2 |
| NIELSON ENERGY LTD | 12714 | CODY | 3 | 2 |
| NIELSON ENTERPRISES INC | 3289 | CODY | 0 | 0 |
| NIJEAN PETROLEUM INC | 12162 | SHAWNEE | 7 | 2 |
| NIKO RESOURCES LLC | 21772 | BROKEN ARROW | 0 | 0 |
| NILES Q & EVELYN HANLIN | 13365 | SKIATOOK | 1 | 1 |
| NINE & NINE | 24240 | LAVERNE | 0 | 0 |
| NINE MICHAEL DEAN | 18992 | FARGO | 1 | 1 |
| NITRO PETROLEUM INC | 22172 | PHOENIX | 10 | 2 |
| NITRO-LIFT/OKLAHOMA MANUFACTURING LLC | 22363 | TISHOMINGO | 0 | 0 |
| NIVENS PRODUCTIONS LLCActive | 20794 | COYLE | 11 | 2 |
| NIXON PROPERTIES INC | 6490 | Tulsa | 1 | 1 |
| NJECT DISPOSAL LLCActive | 22874 | HOUSTON | 2 | 2 |
| NJRE OPERATING COMPANY | 18926 | TULSA | 0 | 0 |
| NO-EN-CO | 17655 | OKLAHOMA CITY | 0 | 0 |
| NOBLE DRILLING CORP EXPL DIV | 14627 | HOUSTON | 4 | 3 |
| NOBLE ENERGY INC | 21296 | DENVER | 43 | 10 |
| NOBLE ENERGY PRODUCTION INC | 21743 | DUNCAN | 41 | 11 |
| NOBLE HYDROCARBONS INC | 14545 | BLUE ISLAND | 0 | 0 |
| NOBLE OPERATING COMPANY INC | 12528 | GARDEN CITY | 13 | 5 |
| NOBLE OPERATING LLC | 22180 | FLOWER MOUND | 0 | 0 |
| NOBLE RESOURCES INCActive | 19319 | MANNFORD | 73 | 3 |
| NOCO INVESTMENT COMPANY INC | 6591 | TULSA | 1 | 1 |
| NODALSEISMIC LLCActive | 24759 | SIGNAL HILL | 0 | 0 |
| NODAWAY MINERALS INC | 18617 | BARTLESVILLE | 0 | 0 |
| NODDING DONKEY RESOURCES LLCActive | 25079 | OKLAHOMA CITY | 17 | 1 |
| NOG LLCActive | 23647 | EDMOND | 1 | 1 |
| NOGP OPERATING COMPANY INCActive | 24311 | Tomball | 98 | 3 |
| NOMOC OIL COMPANY INC | 3466 | OKLAHOMA CITY | 0 | 0 |
| NONDORF OIL & GAS INC | 10228 | OKLAHOMA CITY | 38 | 8 |
| NOONER CYNTHIAActive | 5503 | Ratliff City | 22 | 3 |
| NORAM PETROLEUM INC | 14691 | CITRUS HEIGHTS | 0 | 0 |
| NORBLA OIL COMPANY | 1574 | TULSA | 15 | 9 |
| NORDAN OIL AND GAS CORPORATION | 21913 | ABILENE | 0 | 0 |
| NORDSTRAND ENGINEERING INCActive | 20745 | HOUSTON | 13 | 7 |
| NORFLEET EARNEST L | 15246 | MUSKOGEE | 0 | 0 |
| NORMAN BILLY JACK | 3948 | SASAKWA | 0 | 0 |
| NORMAN BROS TANK TRUCKS | 14651 | PAULS VALLEY | 0 | 0 |
| NORMAN BROTHERS TANK TRUCK INC | 16199 | PAULS VALLEY | 12 | 1 |
| NORMAN JIM | 18514 | WEWOKA | 0 | 0 |
| NORMAN KENNETH W | 6759 | SASAKWA | 0 | 0 |
| NORMAN OIL CORPORATION | 17860 | ABILENE | 3 | 1 |
| NORMAN PRODUCTION COMPANY | 11692 | CHANDLER | 2 | 1 |
| NORMAN VENTURES INC | 13657 | TULSA | 3 | 3 |
| NORSTAR DRILLING CO INC | 15601 | PONCA CITY | 1 | 1 |
| NORTEX GAS & OIL CO | 8163 | TULSA | 0 | 0 |
| NORTH AMERICAN BRINE RESOURCES LLC | 21403 | ENID | 1 | 1 |
| NORTH AMERICAN ENERGY INC | 18171 | DUNCAN | 1 | 1 |
| NORTH AMERICAN ENERGY RES INC | 12659 | OKLAHOMA CITY | 25 | 16 |
| NORTH AMERICAN OPERATING, LLCActive | 24922 | ARDMORE | 114 | 3 |
| NORTH AMERICAN ROYALTIES INC | 4057 | CHATTANOOGA | 13 | 7 |
| NORTH BOUND EXPLORATION CO | 20195 | PAULS VALLEY | 0 | 0 |
| NORTH CANADIAN PRODUCTION LLCActive | 24986 | OKEMAH | 37 | 3 |
| NORTH CENTRAL CASING PULLER INC | 17635 | GRAHAM | 34 | 13 |
| NORTH CENTRAL DRILLING CO INC | 11778 | MANNFORD | 8 | 2 |
| NORTH CENTRAL OIL CORPORATION | 4911 | HOUSTON | 9 | 5 |
| NORTH EAST OKLAHOMA WELL SERVICE LLC | 22601 | WEWOKA | 16 | 10 |
| NORTH FORK OPERATING INC | 18124 | DALLAS | 3 | 1 |
| NORTH FORTY RESOURCES INC | 18640 | KIEFER | 1 | 1 |
| NORTH LAKE RESOURCES LLCActive | 24571 | OKLAHOMA CITY | 185 | 25 |
| NORTH LINE OIL COMPANY | 12759 | JENNINGS | 0 | 0 |
| NORTH PASS LOGISTICS LLC | 24890 | KINGFISHER | 0 | 0 |
| NORTH STAR EXPLORATION COMPANYActive | 11420 | OKLAHOMA CITY | 44 | 6 |
| NORTH STAR PETROLEUM CORP | 10568 | SAN ANTONIO | 15 | 5 |
| NORTHAM OIL | 20268 | CLEVELAND | 0 | 0 |
| NORTHAM OIL COMPANY INC | 21087 | ADA | 0 | 0 |
| NORTHBROOK OIL & GAS CO LLC | 20509 | NORMAN | 13 | 5 |
| NORTHBROOK OIL & GAS COMPANY | 19925 | NORMAN | 1 | 1 |
| NORTHCOTE CLEVELAND LLCActive | 24550 | BORGER | 0 | 0 |
| NORTHCOTE OSAGE LLC | 23357 | RICHARDSON | 0 | 0 |
| NORTHCUTT ENERGY LC | 19830 | EDMOND | 0 | 0 |
| NORTHCUTT PAUL E | 14023 | PONCA CITY | 0 | 0 |
| NORTHEASTERN OK OIL | 8006 | OKTAHA | 1 | 1 |
| NORTHEASTERN RESOURCES LTD | 12931 | OKLAHOMA CITY | 2 | 2 |
| NORTHERN PUMP COMPANY | 1580 | DENVER | 11 | 10 |
| NORTHLAND ROYALTY CO | 16859 | BILLINGS | 0 | 0 |
| NORTHPORT PRODUCTION COMPANYActive | 19104 | EDMOND | 26 | 5 |
| NORTHWEST CREST LLC | 23145 | FEDERAL WAY | 1 | 1 |
| NORTHWEST DISPOSAL CORPORATION | 17717 | LAVERNE | 1 | 1 |
| NORTHWEST OIL COMPANY | 1581 | PLANO | 7 | 4 |
| NORTHWESTERN PRODUCTION INC | 7034 | OKLAHOMA CITY | 4 | 2 |
| NORTHWIND OIL COMPANY | 16806 | TULSA | 5 | 1 |
| NORVILLE OIL COMPANY | 4727 | OKLAHOMA CITY | 3 | 2 |
| NOSSAMAN E OIL COMPANY | 5884 | DEL CITY | 2 | 1 |
| NOSSAMAN E OIL INC | 16373 | DEL CITY | 2 | 2 |
| NOTLEY MICHAEL E | 19680 | DEWEY | 0 | 0 |
| NOTTING HILL ENERGY LLCActive | 24738 | Ft Worth | 1 | 1 |
| NOURSE MARILYN SUE | 11682 | TULSA | 1 | 1 |
| NOVA ENERGY CORPORATION | 6974 | DENVER | 31 | 14 |
| NOVO II OPERATING, LLCActive | 25173 | Oklahoma City | 5 | 2 |
| NOVY OIL & GAS INCActive | 21092 | GODDARD | 0 | 0 |
| NOWATA GAS COMPANY | 16391 | TULSA | 7 | 1 |
| NOWATA PETROLEUM OPERATING CO | 11444 | NOWATA | 23 | 1 |
| NRG OIL LLC | 20027 | STRATFORD | 0 | 0 |
| NS OIL LLCActive | 24987 | Minneapolis | 101 | 4 |
| NUB'S WELL SERVICING INCActive | 7279 | RATLIFF CITY | 235 | 5 |
| NUCO ENERGY LLC | 22317 | BEGGS | 13 | 1 |
| NUERA DISPOSALS LLC | 24166 | WEATHERFORD | 0 | 0 |
| NUEX CORP | 6161 | OKLAHOMA CITY | 12 | 8 |
| NULL W E | 11759 | JENNINGS | 0 | 0 |
| NUNN JIMMIE R & ELVA E | 22537 | MUSKOGEE | 0 | 0 |
| NUNNELEY GENE | 10510 | CANEY | 0 | 0 |
| NUNYA ENERGY LLC | 23067 | ENID | 0 | 0 |
| NUTT JERRIE | 10098 | DUNCAN | 5 | 1 |
| NW 4-C OPERATING COMPANY, LLCActive | 24998 | BETHANY | 3 | 2 |
| NW ARKANSAS ENERGY CONCEPTS INC | 16428 | SPRINGDALE | 0 | 0 |
| NWM OPERATING INCActive | 18318 | OKEENE | 8 | 3 |
| NWM PROPERTIES LLCActive | 22086 | TULSA | 3 | 2 |
| NYC RESOURCES LTD | 15534 | TULSA | 1 | 1 |
| NYE OIL COMPANY | 1585 | OKLAHOMA CITY | 1 | 1 |
| NYTEX CORPORATION | 15166 | OKLAHOMA CITY | 1 | 1 |
| NYTEX ENERGY LLC | 22206 | EDMOND | 7 | 3 |
| NYTEX LLC | 17798 | EDMOND | 4 | 3 |
| O & L OIL COMPANY | 5221 | OILTON | 0 | 0 |
| O & L RESOURCES INC | 16804 | NOWATA | 8 | 1 |
| O & S ENERGY LLC | 23589 | CHICKASHA | 0 | 0 |
| O & S PRODUCTION COMPANY | 13694 | MAUDE | 1 | 1 |
| O & W OIL COMPANY | 8689 | STROUD | 3 | 1 |