| DLB OIL & GAS INC | 18117 | OKLAHOMA CITY | 58 | 17 |
| DLJ OIL & GAS LLC | 20496 | KINGFISHER | 1 | 1 |
| DLKB OPERATING LLCActive | 23334 | Eufaula | 165 | 5 |
| DM PETROLEUM LLCActive | 21919 | DUNCAN | 20 | 1 |
| DMS INVESTMENTS INC | 14562 | TULSA | 13 | 3 |
| DMS OIL COMPANY | 17440 | HOUSTON | 4 | 3 |
| DOAK CORPORATION | 16837 | TULSA | 0 | 0 |
| DOBBINS BELOYSA | 18576 | ADA | 0 | 0 |
| DOBBINS FAMILY RESIDUAL TRUST | 15979 | ARDMORE | 1 | 1 |
| DOBSON OIL AND GAS LLCActive | 22475 | DEER CREEK | 5 | 1 |
| DOBSON OIL OPERATORS INC | 15399 | SAPULPA | 1 | 1 |
| DOC CO OIL CORPORATION | 12993 | ARKANSAS CITY | 0 | 0 |
| DOC HOLIDAY ENERGY LLC | 23269 | TULSA | 0 | 0 |
| DOCO DEVELOPMENT CORPORATIONActive | 17085 | NORMAN | 7 | 5 |
| DODD RAYMOND | 17320 | BARTLESVILLE | 0 | 0 |
| DODSON JR GEORGE | 19359 | DELAWARE | 0 | 0 |
| DODSON WAYNE N | 14576 | SNYDER | 0 | 0 |
| DOGWATCH PETROLEUM INC | 7255 | OKLAHOMA CITY | 8 | 7 |
| DOLL ENERGY CO LLC | 24035 | YALE | 0 | 0 |
| DOLL NORMAN & PAULINE | 16614 | YALE | 0 | 0 |
| DOLOMITE PETROLEUM LC | 19502 | TULSA | 0 | 0 |
| DOLPHIN ENERGY LLC | 19995 | TULSA | 0 | 0 |
| DOLPHIN RESOURCES INC | 11395 | WAGONER | 2 | 2 |
| DOLYNDA PARTNERSHIP | 18272 | TAMPA | 0 | 0 |
| DOMAC OIL COMPANY INC | 16622 | PERKINS | 4 | 2 |
| DOMAIN EXPLORATION CO | 13826 | TULSA | 0 | 0 |
| DOMAR OIL & GAS INC | 18047 | LIBERAL | 0 | 0 |
| DOMESTIC RESOURCES CORPORATION | 11314 | OKLAHOMA CITY | 5 | 4 |
| DOMINION EXP MIDCONTINENT INC | 11624 | OKLAHOMA CITY | 121 | 9 |
| DOMINION EXPLORATION & PRODUCTION INC | 12592 | OKLAHOMA CITY | 49 | 17 |
| DOMINION OIL & GAS CORP | 17770 | DALLAS | 2 | 1 |
| DOMINION OK TX E & P INC | 16096 | OKLAHOMA CITY | 0 | 0 |
| DOMINION OK TX E & P INC | 18468 | OKLAHOMA CITY | 0 | 0 |
| DOMINION OK TX E & P INC | 21071 | OKLAHOMA CITY | 0 | 0 |
| DOMINION OK TX E & P INC | 660 | OKLAHOMA CITY | 0 | 0 |
| DOMINION OK TX E & P INC | 7254 | OKLAHOMA CITY | 0 | 0 |
| DOMINO INVESTMENTS | 13316 | GOLTRY | 0 | 0 |
| DOMINO OIL & GAS INC | 14419 | GOLTRY | 0 | 0 |
| DON & CONNIE OIL CO | 16443 | DEWEY | 0 | 0 |
| DON DAVIS OIL COMPANYActive | 21966 | NOCONA | 5 | 1 |
| DON'S CONSTRUCTION CO INC | 12669 | TONKAWA | 1 | 1 |
| DON'S OIL COMPANY INC | 13616 | OXFORD | 10 | 1 |
| DONALD N PRICEActive | 25027 | HOLDENVILLE | 2 | 1 |
| DONALDSON RICHARD E | 620 | BARTLESVILLE | 1 | 1 |
| DONEGAL PETROLEUM CORPORATION | 13069 | TULSA | 1 | 1 |
| DONEGHY JAMES | 6482 | WELLINGTON | 17 | 1 |
| DONLARR EXPLORATION INC | 8285 | OKLAHOMA CITY | 2 | 2 |
| DONNYBROOK PETROLEUM INC | 11874 | TULSA | 0 | 0 |
| DONOVAN JOE D OR L P MCELWAINE | 6252 | TULSA | 1 | 1 |
| DONRAY PETROLEUM LLCActive | 21690 | Choctaw | 132 | 3 |
| DONSON CORP/FULTON PETRO INC | 11909 | OKLAHOMA CITY | 1 | 1 |
| DONSON CORPORATION | 12671 | EDMOND | 8 | 5 |
| DOODLE BUG INC | 19636 | PADUCAH | 1 | 1 |
| DOOLEY LONNIE | 17019 | YALE | 2 | 1 |
| DOOLEY OILActive | 24460 | CUSHING | 10 | 1 |
| DORADO E & P PARTNERS LLC | 23019 | TULSA | 11 | 3 |
| DORADO ENERGY LLCActive | 24411 | EDMOND | 11 | 1 |
| DORADO EXPLORATION LLC | 23590 | EDMOND | 1 | 1 |
| DORALEX ENERGY INC | 14093 | SAN ANGELO | 0 | 0 |
| DORCHESTER HUGOTON LTD | 12894 | GARLAND | 6 | 1 |
| DORCHESTER MINERALS OPERATING LP | 21335 | DALLAS | 2 | 1 |
| DORCHESTER RESOURCES LP | 23888 | OKLAHOMA CITY | 0 | 0 |
| DOREY OIL CORPORATION | 2259 | HEALDTON | 3 | 1 |
| DORFS DRILLING COMPANY | 625 | WAURIKA | 8 | 1 |
| DORLA OIL COMPANY | 2871 | SHIDLER | 2 | 1 |
| DORMAN JOHN C & WILMA | 17077 | FORGAN | 1 | 1 |
| DORMAN RICHARD H & NEVA M | 17352 | FORGAN | 0 | 0 |
| DOSHIER OPERATING COMPANY | 15511 | SEMINOLE | 1 | 1 |
| DOSMAS OIL COMPANY | 18388 | WICHITA FALLS | 1 | 1 |
| DOST JR W F | 14598 | EDMOND | 2 | 1 |
| DOT ENERGY INC | 10948 | LENAPAH | 1 | 1 |
| DOTSON JACK M OPERATING CO | 15320 | NORMAN | 1 | 1 |
| DOUBLE "C" ENERGY | 16865 | COWETA | 9 | 1 |
| DOUBLE A EXPLORATION | 14918 | YALE | 1 | 1 |
| DOUBLE B DRILLING | 20245 | KINGFISHER | 0 | 0 |
| DOUBLE C OIL & GAS LLCActive | 24057 | JENKS | 6 | 2 |
| DOUBLE C OPERATING LLC | 22197 | DELAWARE | 2 | 1 |
| DOUBLE D-2 OIL COMPANY INC | 12942 | DELAWARE | 14 | 1 |
| DOUBLE DIAMOND ACQUISITION LP | 19869 | TULSA | 0 | 0 |
| DOUBLE EAGLE OIL & GAS INC | 10311 | ENID | 0 | 0 |
| DOUBLE EAGLE PETROLEUM CORP | 18235 | DALLAS | 24 | 3 |
| DOUBLE GG PRODUCTION LLC | 23423 | HEALDTON | 0 | 0 |
| DOUBLE H PETROLEUM CORPORATION | 16350 | TULSA | 4 | 2 |
| DOUBLE J OIL CO LLCActive | 12292 | BRISTOW | 47 | 3 |
| DOUBLE K CRUDE CORP | 13980 | PRYOR | 1 | 1 |
| DOUBLE M PRODUCTION CO | 13888 | NOVATO | 0 | 0 |
| DOUBLE O RANCH LLC | 22571 | OKEMAH | 0 | 0 |
| DOUBLE R OPERATIONS | 20724 | TERRAL | 0 | 0 |
| DOUBLE S TANK TRUCKS SER INC | 18429 | GARBER | 0 | 0 |
| DOUBLE-DOUBLE PARTNERS | 17786 | LUBBOCK | 0 | 0 |
| DOUG AND JANENE RISENHOOVER OIL AND GAS LLCActive | 24881 | CUSHING | 17 | 3 |
| DOUG BRINKLEY | 24839 | — | 0 | 0 |
| DOUGLAS FAIRBANKS HOLDINGS LLCActive | 24820 | PINE HURST | 0 | 0 |
| DOUGLAS INVESTMENTS INCActive | 18599 | FORT WORTH | 0 | 0 |
| DOUGLAS OIL & GAS CO INC | 6350 | ADA | 5 | 4 |
| DOUGLAS TOM H | 5734 | ADA | 1 | 1 |
| DOUGLASS DIETZ & DALEY INCActive | 17064 | OKLAHOMA CITY | 32 | 15 |
| DOVE INVESTMENTS LLCActive | 24091 | WETUMKA | 2 | 1 |
| DOVE OIL COMPANY | 10188 | HEALDTON | 1 | 1 |
| DOVE PETROLEUM CO | 16561 | BARTLESVILLE | 0 | 0 |
| DOWDY OPERATING INC | 16355 | ADA | 0 | 0 |
| DOWNEY ALFRED | 2888 | ARDMORE | 0 | 0 |
| DOWNEY J D & ASSOCIATES | 14579 | BETHANY | 0 | 0 |
| DOWNEY JOHN P INC | 11099 | OKLAHOMA CITY | 7 | 1 |
| DOWNHOLE OIL & GAS TECH LLC | 21377 | COUNTYLINE | 3 | 2 |
| DOWNS LAWRENCE A | 19236 | TULSA | 4 | 1 |
| DPC CORPORATION | 20131 | TULSA | 0 | 0 |
| DRAGON ENERGY LLC | 20213 | TULSA | 0 | 0 |
| DRAGONFLY RESOURCES LLCActive | 22888 | BROKEN ARROW | 13 | 1 |
| DRAKE EXPLORATION INCActive | 11863 | TULSA | 28 | 5 |
| DRAKE EXPLORATION LLCActive | 22835 | ARKANSAS CITY | 17 | 3 |
| DRAKE OIL & GAS LLCActive | 23013 | WICHITA FALLS | 1 | 1 |
| DRAPER DON C | 14581 | ADA | 1 | 1 |
| DRD ENVIRONMENTAL SERVICESActive | 24798 | OKLAHOMA CITY | 0 | 0 |
| DRESSLER PRODUCTION CO | 7847 | OKLAHOMA CITY | 2 | 2 |
| DRG ENERGY INCActive | 20486 | NORMAN | 7 | 6 |
| DRG OIL AND GAS | 20263 | DUNCAN | 0 | 0 |
| DRIFTWOOD STORAGE LLC | 22309 | TULSA | 0 | 0 |
| DRILL BB USA FUNDActive | 25146 | REDLANDS | 0 | 0 |
| DRILLERS INC | 13322 | HOUSTON | 0 | 0 |
| DRILLEX CONSULTING CORP | 12702 | TULSA | 6 | 1 |
| DRILLING & DEVELOPMENT ENG INC | 14588 | BELLINGHAM | 5 | 3 |
| DRILLVIEW INC | 12334 | DALLAS | 0 | 0 |
| DRISKILL BRENTONActive | 24908 | OWASSO | 5 | 1 |
| DRIVER ENERGY INC | 15635 | EDMOND | 0 | 0 |
| DRIVER ENERGY OF TEXAS | 18380 | DALLAS | 9 | 4 |
| DROVER CORPORATION (THE) | 15497 | EDMOND | 2 | 2 |
| DRS LC | 24565 | TULSA | 1 | 1 |
| DRUMMOND & HULL OIL COMPANY | 13132 | PAWHUSKA | 0 | 0 |
| DRUMMOND UPSTREAM LLCActive | 24801 | TULSA | 0 | 0 |
| DRUMRIGHT WELL SERVICE INCActive | 6949 | OILTON | 25 | 7 |
| DRY CREEK PETROLEUM LLC | 21616 | YUKON | 0 | 0 |
| DRY HOLE SOIL FARM & RECYCLING LLCActive | 24799 | SENTINEL | 0 | 0 |
| DRYES CORNER LLCActive | 22433 | OKLAHOMA CITY | 1 | 1 |
| DSJ INC | 22230 | ADA | 0 | 0 |
| DSM EXPLORATION INC | 16953 | OKLAHOMA CITY | 21 | 5 |
| DTE GAS RESOURCES INC | 21461 | FORT WORTH | 0 | 0 |
| DUAL OPERATING & PRODUCTION CO | 12090 | TULSA | 54 | 7 |
| DUB OIL LLCActive | 24762 | JENKS | 10 | 3 |
| DUBLIN PETROLEUM CORPORATION | 14773 | ENID | 29 | 5 |
| DUBLOON INC | 8805 | BROKEN ARROW | 2 | 1 |
| DUCK BROS DOZER & TRUCKING INC | 10238 | KONAWA | 0 | 0 |
| DUCK BROS DOZER & TRUCKING INCActive | 20282 | KONAWA | 0 | 0 |
| DUCK JIMMY A | 7622 | KONAWA | 2 | 1 |
| DUCK OIL COMPANY LLCActive | 23720 | KONAWA | 40 | 4 |
| DUCK PRODUCTION MANAGEMENT LLCActive | 24859 | KONAWA | 18 | 1 |
| DUCKETT THOMAS R | 14064 | MUSTANG | 0 | 0 |
| DUCO ENERGY LLC | 21543 | TULSA | 0 | 0 |
| DUFFER WILLIAM R | 17880 | EDMOND | 2 | 1 |
| DUFFIELD ROBERT | 7969 | TULSA | 0 | 0 |
| DUFFY ALVIE | 19441 | STROUD | 0 | 0 |
| DUGGAN STEPHEN F | 5315 | BOSTON | 0 | 0 |
| DUGGER OIL COMPANY | 12742 | NOWATA | 0 | 0 |
| DUGGINS EQUIPMENT INC | 21479 | WOODWARD | 0 | 0 |
| DUKE M O | 14806 | HOBART | 0 | 0 |
| DULWORTH DONActive | 22767 | VELMA | 12 | 2 |
| DUNBAR LENA H | 640 | TULSA | 0 | 0 |
| DUNCAN ENERGY COMPANY | 18069 | DENVER | 155 | 5 |
| DUNCAN FRANK E & RONALD R | 16232 | OKEMAH | 0 | 0 |
| DUNCAN JR J WALTER | 6415 | OKLAHOMA CITY | 2 | 1 |
| DUNCAN OIL & GAS INCActive | 17530 | NORMAN | 36 | 5 |
| DUNCAN OIL PROPERTIES INCActive | 15876 | OKLAHOMA CITY | 210 | 19 |
| DUNCAN RONALD R | 15085 | OKEMAH | 0 | 0 |
| DUNCAN TANK & DISPOSAL, LLCActive | 25009 | Oklahoma City | 1 | 1 |
| DUNDEE OIL & SUPPLY INC | 643 | TULSA | 7 | 5 |
| DUNE RESOURCES INC | 11687 | TULSA | 10 | 7 |
| DUNHAM JIMMIE L | 13889 | SAN ANGELO | 0 | 0 |
| DUNIGAN JAMES P INC | 12790 | ABILENE | 0 | 0 |
| DUNKIN OIL AND GAS LLCActive | 24731 | WYNEWOOD | 68 | 1 |
| DUNLAP DRILLING AND PRODUCING, INCActive | 19949 | GLENPOOL | 77 | 3 |
| DUNLAP LOUIS T | 18373 | MIDWEST CITY | 2 | 1 |
| DUNLAP OIL COMPANYActive | 17800 | BRISTOW | 85 | 1 |
| DUNLAP PRESTON | 16631 | OKLAHOMA CITY | 0 | 0 |
| DUNLAP WELL SERVICE INC | 13583 | HASKELL | 1 | 1 |
| DUNN EDWARD | 19334 | GATE | 0 | 0 |
| DUNN ENERGY LLCActive | 20910 | SKIATOOK | 10 | 1 |
| DUNN MARGARET E & JAMES E | 10535 | BARTLESVILLE | 2 | 1 |
| DUNN'S OIL AND GAS LEASE MANAGEMENT LLCActive | 24452 | ARDMORE | 69 | 2 |
| DUNN'S TANK SERVICE | 20755 | FOX | 0 | 0 |
| DUNN'S TANK SERVICE INC | 21464 | FOX | 0 | 0 |
| DUNNE EQUITIES INC | 650 | WICHITA | 10 | 4 |
| DUNNE EQUITIES OPERATING INC | 20254 | HOUSTON | 3 | 2 |
| DUNNING JERRY & CHERIActive | 24974 | CAMERON | 1 | 1 |
| DURANGO ENERGY INC | 13117 | CHICKASHA | 9 | 4 |
| DURANGO EXPLORATION LLCActive | 21603 | OKLAHOMA CITY | 14 | 10 |
| DURANGO RESOURCES CORP | 22069 | HOUSTON | 0 | 0 |
| DUREN ROBERT L | 6001 | DUNCAN | 0 | 0 |
| DURKEE JOHN | 24109 | TULSA | 0 | 0 |
| DURKEE-LINK ENERGY CORP | 10509 | TERLTON | 3 | 2 |
| DUROC EXPLORATION LLCActive | 25074 | Bixby | 62 | 3 |
| DUROK CORPORATIONActive | 22211 | HOUSTON | 4 | 1 |
| DUROSSETTE BILL D | 19217 | HASKELL | 5 | 1 |
| DUROSSETTE BILLY | 21188 | OKMULGEE | 0 | 0 |
| DUROSSETTE FLOYD R | 20603 | WARNER | 7 | 1 |
| DUROSSETTE JR JESS | 652 | HASKELL | 1 | 1 |
| DURR W L | 18189 | OKLAHOMA CITY | 0 | 0 |
| DUTCHER OPERATING COMPANY LLC | 23825 | OKLAHOMA CITY | 0 | 0 |
| DUVALL CARTER | 14582 | OWASSO | 0 | 0 |
| DW OIL & GAS LLCActive | 23640 | OKMULGEE | 1 | 1 |
| DWJS INCActive | 21241 | OKLAHOMA CITY | 16 | 8 |