| CIRCLE C CORPORATION | 6560 | KIEFER | 0 | 0 |
| CIRCLE C OILFIELD SUPPLY INC | 20843 | WETUMKA | 1 | 1 |
| CIRCLE K OIL & GAS INCActive | 18460 | SAND SPRINGS | 16 | 3 |
| CIRCLE K PRODUCTION COMPANY | 14415 | NOWATA | 0 | 0 |
| CIRCLE M PROD & DEV CORP | 19254 | MAYSVILLE | 1 | 1 |
| CIRCLE PETROLEUM CORPORATION | 11562 | ODESSA | 10 | 3 |
| CIRCLE STAR M ENERGY INCActive | 24945 | STONEWALL | 138 | 2 |
| CIRCLE W OIL COMPANY | 12716 | TULSA | 18 | 2 |
| CIRCOM INC | 12954 | COLLINSVILLE | 3 | 1 |
| CIRRUS PRODUCTION COMPANY | 16036 | ENID | 59 | 19 |
| CISCO OPERATING LLC | 22678 | PLANO | 11 | 3 |
| CITADEL ENERGY CORPORATION | 9114 | EDMOND | 0 | 0 |
| CITADEL PROD COMPANY INC | 18893 | DENVER | 1 | 1 |
| CITATION OIL & GAS CORPActive | 14156 | HOUSTON | 7,263 | 30 |
| CITIZEN ENERGY II LLC | 23559 | TULSA | 8 | 4 |
| CITIZEN ENERGY III LLCActive | 24120 | DEVNER | 92 | 8 |
| CITIZEN ENERGY LLC | 23101 | TULSA | 0 | 0 |
| CITIZEN ENERGY VENTURES LLCActive | 25071 | TULSA | 23 | 4 |
| CITORI OIL COMPANY | 16490 | WICHITA FALLS | 3 | 1 |
| CITRUS ENERGY CORPORATION | 18029 | CASTLE ROCK | 9 | 6 |
| CIVIC ENERGY CORPORATIONActive | 24197 | COLONY | 3 | 2 |
| CJ DRILLING COMPANY INC | 8500 | SULPHUR | 1 | 1 |
| CJR OPERATING LLCActive | 25053 | WISTER | 32 | 3 |
| CK RESOURCES | 17330 | CLEVELAND | 0 | 0 |
| CKB & ASSOC INC | 12019 | DALLAS | 2 | 2 |
| CKB LIMITED PARTNERSHIP | 22188 | GORDONVILLE | 0 | 0 |
| CLAASSEN OIL AND GAS INC | 16643 | TULSA | 0 | 0 |
| CLAASSEN OIL AND GAS INC | 18677 | ESTES PARK | 0 | 0 |
| CLABORN JULIA | 15400 | OKMULGEE | 1 | 1 |
| CLACO RESOURCES LLC | 22059 | MCALESTER | 0 | 0 |
| CLAIBORNE-MCDONALD INC | 417 | CHICKASHA | 11 | 3 |
| CLAMB INC | 13824 | TULSA | 0 | 0 |
| CLAMPITT RONALD E | 21215 | LOCO | 2 | 1 |
| CLAPP CARL O | 14794 | CEDAR VALE | 0 | 0 |
| CLAREEN RESOURCES | 12621 | CLEVELAND | 0 | 0 |
| CLAREMONT CORPORATIONActive | 8171 | TULSA | 39 | 10 |
| CLAREMONT EXPLORATION INC | 14416 | TULSA | 18 | 6 |
| CLARITA OPERATING LLC | 22205 | ADA | 0 | 0 |
| CLARK FRED D | 21936 | DUNCAN | 0 | 0 |
| CLARK & GALLOWAY CORPORATION | 14119 | DALLAS | 0 | 0 |
| CLARK ALAN | 20171 | JENKS | 0 | 0 |
| CLARK AND CLARK | 418 | PRINCETON | 2 | 2 |
| CLARK C M | 14509 | SEMINOLE | 0 | 0 |
| CLARK DEAN | 6076 | OKMULGEE | 0 | 0 |
| CLARK DEREK A J | 6779 | CLAREMORE | 0 | 0 |
| CLARK ENERGY COMPANY | 19957 | EDMOND | 0 | 0 |
| CLARK EXPLORATION COMPANY | 11888 | HIGHLANDS RANCH | 1 | 1 |
| CLARK GORDON G ESTATE | 423 | ARDMORE | 0 | 0 |
| CLARK J BRENT | 21640 | NORMAN | 1 | 1 |
| CLARK JOE NEAL | 19572 | HOLDENVILLE | 0 | 0 |
| CLARK KRISTA | 19782 | ADA | 0 | 0 |
| CLARK MORAN RESOURCES LLC | 23725 | TULSA | 2 | 2 |
| CLARK OPERATING INCActive | 17923 | Wichita Falls | 45 | 2 |
| CLARK PAUL A | 18700 | DALLAS | 0 | 0 |
| CLARK RESOURCES LLC | 24597 | TULSA | 0 | 0 |
| CLARK RONALD G | 12828 | HASKELL | 1 | 1 |
| CLARK THOMAS M | 20810 | MORRIS | 0 | 0 |
| CLARK WELL SERVICE | 12872 | DEPEW | 4 | 2 |
| CLARKSON BILLY J & CHAS A | 21057 | OKMULGEE | 0 | 0 |
| CLARKSON CHARLES W | 3045 | OKMULGEE | 0 | 0 |
| CLASS PETROLEUM CORPORATION | 10208 | BARNSDALL | 1 | 1 |
| CLASSEN EXPLORATION INC | 12102 | DENVER | 0 | 0 |
| CLASSEN OIL & GAS CO | 4905 | OKLAHOMA CITY | 3 | 2 |
| CLASSIC OIL COMPANY | 13776 | TULSA | 0 | 0 |
| CLAUDE DAVID | 16915 | DENTON | 0 | 0 |
| CLAY INVESTMENTS LLC | 20909 | STILLWATER | 0 | 0 |
| CLAY PETROLEUM INC | 14078 | TYLER | 0 | 0 |
| CLAYBROOK PRODUCTION CO. INC. | 430 | WEWOKA | 23 | 6 |
| CLAYTON CORP PETRO & NATURAL GAS PROD | 20064 | LAKEWOOD | 4 | 1 |
| CLAYTON CORPORATION | 18895 | GOLDEN | 0 | 0 |
| CLAYTON LINDA J | 20744 | KONAWA | 0 | 0 |
| CLC OPERATIONS INC | 15664 | MIDLAND | 0 | 0 |
| CLEAN OIL LLCActive | 25052 | ADA | 13 | 1 |
| CLEAR CREEK ROYALTY LLC | 21200 | TULSA | 0 | 0 |
| CLEARY BETTY J | 3258 | COMANCHE | 0 | 0 |
| CLEARY EXPLORATION LLC | 19892 | OKLAHOMA CITY | 5 | 3 |
| CLEARY JO ANNEActive | 17148 | SAINT LOUIS | 3 | 2 |
| CLEARY PETROLEUM CORPORATION | 20697 | EDMOND | 19 | 9 |
| CLEAVER LORAINE OIL COMPANY | 21534 | COLONY | 0 | 0 |
| CLEERE OPERATING LLCActive | 24691 | SHAWNEE | 12 | 2 |
| CLEMENT WILLIAM H ETAL | 434 | BURKBURNETT | 14 | 1 |
| CLEMENTS EXPLORATION CO | 6483 | OKLAHOMA CITY | 4 | 3 |
| CLEMISHIRE DON | 4353 | HOMINY | 1 | 1 |
| CLEMSHIRE BOB | 2759 | HOMINY | 0 | 0 |
| CLEMSHIRE DRILLING COMPANY | 15419 | TULSA | 0 | 0 |
| CLEVELAND ROD & TRACYActive | 23917 | ELMORE CITY | 9 | 1 |
| CLICK BETTY | 5142 | STIGLER | 13 | 2 |
| CLICK ROBERT R | 17387 | DALLAS | 0 | 0 |
| CLIFFORD ENERGY LLC | 23506 | ADA | 2 | 1 |
| CLIFFORD RESOURCES INC | 6988 | OKLAHOMA CITY | 46 | 17 |
| CLIFFWOOD PRODUCTION COMPANY | 20210 | HOUSTON | 5 | 1 |
| CLIFT CARY EActive | 6763 | CHICKASHA | 17 | 1 |
| CLIFTON & ASSOCIATES INC | 10057 | TULSA | 5 | 4 |
| CLIFTON CONSULTING INC | 22067 | PIEDMONT | 0 | 0 |
| CLIFTON RESOURCES INC | 4997 | BRAMAN | 0 | 0 |
| CLIMAX OIL CO LLCActive | 24351 | COMANCHE | 8 | 1 |
| CLINDCO INC | 12232 | BARTLESVILLE | 35 | 2 |
| CLINE ENGINEERING INC | 16752 | TULSA | 0 | 0 |
| CLINE RON | 13797 | DUNCAN | 0 | 0 |
| CLINGENPEEL SHERRY L | 21412 | RAMONA | 0 | 0 |
| CLINKENBEARD CHARLES D | 5687 | BARTLESVILLE | 5 | 1 |
| CLINTCO OIL & GAS INC | 21725 | ARDMORE | 3 | 1 |
| CLINTON PUBLIC WORKS AUTHORITY | 23930 | CLINTON | 1 | 1 |
| CLIPPER ENERGY LLC | 22163 | DALLAS | 0 | 0 |
| CLM OIL PRODUCTION INC | 13097 | BARTLESVILLE | 17 | 1 |
| CLOER EQUIPMENT COMPANY INC | 15269 | OKLAHOMA CITY | 0 | 0 |
| CLOER VIRGIL R | 2858 | OKLAHOMA CITY | 4 | 3 |
| CLOUR VERA | 13282 | RATLIFF CITY | 2 | 1 |
| CLUTE OIL CORP | 16473 | DENVER | 0 | 0 |
| CLV OIL & GAS INC | 17767 | TULSA | 12 | 5 |
| CLYDE PETROLEUM INC | 7155 | TULSA | 1 | 1 |
| CLYDESDALE ENERGY LLC | 21072 | OKLAHOMA CITY | 5 | 5 |
| CMC OIL & GAS INC | 7796 | BARTLESVILLE | 10 | 2 |
| CMINT PRODUCTIONS LLC | 23100 | DALLAS | 1 | 1 |
| CMO LLCActive | 23659 | MANNFORD | 85 | 4 |
| CMR OPERATING LLC | 23756 | TULSA | 1 | 1 |
| CMS DRILLING LLC | 22098 | TULSA | 1 | 1 |
| CMS ENERGY INC | 13979 | DALLAS | 6 | 5 |
| CMS HYDROCARBONS LLC | 19888 | TULSA | 0 | 0 |
| CMS LAVERNE GAS PROCESSING LLC | 20283 | TULSA | 0 | 0 |
| CMS LEGACY, LLCActive | 25094 | PALM CITY | 15 | 1 |
| CMS NOMECO OIL & GAS CO | 15284 | HOUSTON | 8 | 6 |
| CMT OIL & GAS COMPANY INCActive | 20671 | TULSA | 14 | 6 |
| CMT OPERATING LLC | 21699 | CLEVELAND | 1 | 1 |
| CMX INC OF KANSASActive | 16491 | WICHITA | 15 | 2 |
| CNR RESOURCES INC | 10019 | HOUSTON | 2 | 2 |
| CO-ST OIL OPERATING CO INC | 12080 | ENID | 29 | 6 |
| COAKLEY KAREN CActive | 19799 | HOBART | 1 | 1 |
| COAL GAS USA LLC | 21934 | OKLAHOMA CITY | 0 | 0 |
| COAL OIL & GAS COMPANYActive | 439 | Ada | 25 | 1 |
| COALEUM CORPORATION | 18827 | DALLAS | 1 | 1 |
| COALINGA CORPORATION | 19338 | LOS ANGELES | 1 | 1 |
| COAST DAVID | 20849 | BARTLESVILLE | 0 | 0 |
| COAST DEAN | 14516 | BARTLESVILLE | 0 | 0 |
| COAST GERALD L | 12331 | BARTLESVILLE | 2 | 1 |
| COASTAL OIL & GAS CORPORATION | 5935 | HOUSTON | 23 | 9 |
| COASTAL OILS INC | 17041 | OKLAHOMA CITY | 23 | 13 |
| COASTAL PLAINS ENERGY INCActive | 16824 | OKLAHOMA CITY | 57 | 9 |
| COB ENERGY LLCActive | 23992 | MOUNDS | 12 | 1 |
| COBALT ENVIRONMENTAL SOLUTIONS LLC | 23434 | OKLAHOMA CITY | 7 | 5 |
| COBB GEORGE H | 3801 | OKLAHOMA CITY | 3 | 1 |
| COBLENTZ ELDON EActive | 21252 | CHECOTAH | 1 | 1 |
| COBLES OIL & GAS INC | 15337 | YUKON | 0 | 0 |
| COBOPCO INC | 4349 | TULSA | 2 | 2 |
| COBRA OIL & GAS CORPORATIONActive | 7027 | WICHITA FALLS | 51 | 8 |
| COCHRAN BRENDA K | 15321 | PRYOR | 0 | 0 |
| COCHRAN INDUSTRIAL CORPORATION | 14421 | CUSHING | 24 | 10 |
| COCHRAN ROY G | 4341 | KELLYVILLE | 0 | 0 |
| COCKE J ROY | 10067 | FLETCHER | 1 | 1 |
| COCKRUM B C | 6025 | STROUD | 1 | 1 |
| COE DOUG & ASSOCIATES INC | 19667 | PLANO | 0 | 0 |
| COE PRODUCTION COMPANY | 12236 | TALALA | 8 | 2 |
| COE PRODUCTION COMPANY LLCActive | 21754 | Talala | 8 | 2 |
| COEI PRODUCTION INC | 20252 | KATY | 3 | 1 |
| COENERGY ANADARKO INC | 19475 | OKLAHOMA CITY | 0 | 0 |
| COENERGY OPERATING COMPANY | 19377 | OKLAHOMA CITY | 12 | 6 |
| COFFELT BRYANT LEE | 22562 | HIDDEN VALLEY LAKE | 0 | 0 |
| COFFIN DONALD | 16241 | GUTHRIE | 2 | 1 |
| COG PETROLEUM CORPORATION | 13135 | OKLAHOMA CITY | 40 | 2 |
| COGA OIL & GAS INC | 11600 | COLLINSVILLE | 0 | 0 |
| COGBURN & SIMMONS WELL SERVICE | 15913 | CEMENT | 0 | 0 |
| COGBURN LEON & JUANITA | 21881 | CEMENT | 0 | 0 |
| COHO OIL & GAS INCActive | 20387 | COPPELL | 47 | 4 |
| COHORT ENERGY COMPANY | 18922 | DALLAS | 0 | 0 |
| COHORT ENERGY COMPANY | 21180 | DALLAS | 0 | 0 |
| COKA-LION OIL & GAS CO | 16822 | COYLE | 0 | 0 |
| COKA-LION OIL & GAS COMPANY | 18251 | COYLE | 3 | 1 |
| COKER OIL COMPANY | 11671 | DUNCAN | 0 | 0 |
| COKER VIRGIL | 16111 | HENRYETTA | 0 | 0 |
| COLA RESOURCES LLC | 21549 | HOUSTON | 6 | 2 |
| COLBURN ENERGY CORPORATION | 15141 | SPRINGFIELD | 0 | 0 |
| COLDHARBOR ENERGY, LLCActive | 25217 | Northbrook | 27 | 13 |
| COLDREN OIL & GAS INC | 8199 | BARTLESVILLE | 1 | 1 |
| COLE EXPLORATION CO INC | 10318 | OKLAHOMA CITY | 0 | 0 |
| COLE FRANK W ENGINEERING | 2603 | DALLAS | 0 | 0 |
| COLE JERRY L | 13283 | CHICKASHA | 0 | 0 |
| COLE ROBERT L | 7156 | MEDFORD | 2 | 1 |
| COLEMAN DEWAYNE | 17900 | TECUMSEH | 0 | 0 |
| COLEMAN OIL COMPANY | 16297 | BARTLESVILLE | 0 | 0 |
| COLEMAN OIL LLC | 23860 | MARLOW | 1 | 1 |
| COLEMAN PRODUCTION | 19670 | STROUD | 2 | 1 |
| COLEMAN W H & LUCILLE S | 11112 | BARTLESVILLE | 0 | 0 |
| COLLET OIL VENTURES INC | 12180 | DENVER | 2 | 2 |
| COLLIER JERRY | 18506 | COLLINSVILLE | 0 | 0 |
| COLLIER JOHN R | 6446 | NOWATA | 1 | 1 |
| COLLIER PETROLEUM CORPORATION | 17625 | TALOGA | 3 | 1 |
| COLLINS DILLARD dba DILCO OIL COMPANY | 13702 | MANGUM | 4 | 2 |
| COLLINS J R LLC | 24123 | EDMOND | 0 | 0 |
| COLLINS MARGARET SPANG TRUST | 455 | TULSA | 0 | 0 |
| COLLINS MICHAELActive | 22014 | TULSA | 8 | 1 |
| COLLINS OPER ACCT A JT VENTURE | 12354 | STINNETT | 0 | 0 |
| COLLINS PETROLEUM INC | 2697 | BARTLESVILLE | 5 | 1 |
| COLLINS ROGER | 17371 | BARTLESVILLE | 0 | 0 |
| COLLINS ROMANZA | 16995 | MANNFORD | 0 | 0 |
| COLLUM ENERGY CORPORATION | 13301 | DALLAS | 1 | 1 |
| COLLUMS OIL & GAS | 16863 | ENID | 0 | 0 |
| COLONEL RESOURCES LLCActive | 24863 | EDMOND | 3 | 3 |
| COLONIAL ENERGY COMPANY INC | 20239 | GARLAND | 3 | 1 |
| COLONIAL RESOURCES LLC | 18846 | EDMOND | 5 | 1 |
| COLONY PETROLEUM LLC | 20593 | OKLAHOMA CITY | 0 | 0 |