| 1001 | Doc'S Tank Trucks | Jacksboro, TX 76458 | Oil Operator | Jun 2007 |
| 1002 | Docherty Operating, L.L.C. | | Oil Operator | Dec 2023 |
| 1003 | Docking Developm | | Oil & Gas Operator | Dec 1996 |
| 1004 | Docking Development Company, LLC | Arkansas City, KS 67005 | Oil & Gas Operator | Oct 2013 |
| 1005 | Doco Development Corporation | Norman, OK 73070-4324 | Oil & Gas Operator | Jan 2024 |
| 1006 | Dodd Oil & Gas | Spencer, WV 25276 | Oil & Gas Operator | Dec 2021 |
| 1007 | Dodd, C. C., Oil & Gas | | Oil & Gas Operator | Dec 2021 |
| 1008 | Dodson Prairie Oil & Gas LLC | San Antonio, TX 78205 | Gas Operator | Apr 2024 |
| 1009 | Dodson, Inc. | San Antonio, TX 78232 | Oil & Gas Operator | Oct 1998 |
| 1010 | Dodson, Wayne Consultants, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Jul 2003 |
| 1011 | Doege, Donald | La Vernia, TX 78121 | Oil & Gas Operator | Apr 2024 |
| 1012 | Doege, Harry | La Vernia, TX 78121 | Oil & Gas Operator | Aug 2003 |
| 1013 | Doggy Oil Corp | Decatur, GA 30031 | Oil & Gas Operator | Apr 2024 |
| 1014 | Dogwood Operating Company, Inc. | Houston, TX 77069 | Oil & Gas Operator | Apr 2024 |
| 1015 | Dol Resources Inc | Rowlett, TX 75088 | Oil & Gas Operator | Mar 2024 |
| 1016 | Dolberry Energy Resources Corp. | Dallas, TX 75252 | Oil Operator | Apr 2024 |
| 1017 | Dolch Production, Inc. | San Antonio, TX 78248 | Oil & Gas Operator | Jul 1996 |
| 1018 | Dole Enterprises Inc. | | Oil & Gas Operator | Dec 2023 |
| 1019 | Dolezal George Jr | Littleton, CO 80163 | Oil & Gas Operator | Sep 2006 |
| 1020 | Dolinar, Michael J. | Angola, NY 14006 | Gas Operator | Dec 2022 |
| 1021 | Dolphin Energy LLC | Lake Worth, FL 33467 | Oil & Gas Operator | Dec 2023 |
| 1022 | Dolphin Petroleum | Alice, TX 78333 | Oil & Gas Operator | Jun 2008 |
| 1023 | Dolphin Petroleum, LP | Alice, TX 78333 | Oil & Gas Operator | Apr 2024 |
| 1024 | Domac Oil Company Inc | Perkins, OK 74059-0642 | Oil & Gas Operator | Feb 2006 |
| 1025 | Domar Oil & Gas | | Gas Operator | May 1995 |
| 1026 | Domar Oil & Gas, Inc. | Liberal, KS 67905 | Oil & Gas Operator | Oct 2000 |
| 1027 | Dome De Sel LLC | | Oil & Gas Operator | Dec 2023 |
| 1028 | Dome Drilling Co | Westlake, OH 44145-1964-1964 | Oil & Gas Operator | Dec 2009 |
| 1029 | Dome Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
| 1030 | Dome Producing | Cleveland, OH 44114 | Oil & Gas Operator | Dec 1988 |
| 1031 | Domestic Energy Corporation | | Oil Operator | Jan 1988 |
| 1032 | Domestic Oil & Gas Co | Bedford, OH 44146 | Oil & Gas Operator | Dec 1990 |
| 1033 | Domestic Oil Producers | | Oil Operator | Oct 1980 |
| 1034 | Domestic Oil Producers,Inc. | | Oil Operator | Oct 1998 |
| 1035 | Domestic Oil Production | | Oil & Gas Operator | Oct 1989 |
| 1036 | Dominguez Energy L.P. | | Oil & Gas Operator | Dec 2000 |
| 1037 | Dominguez Properties | | Oil & Gas Operator | Dec 1991 |
| 1038 | Dominion Corporation | Houston, TX 77001 | Oil & Gas Operator | Dec 2010 |
| 1039 | Dominion East Ohio | North Canton, OH 44720 | Oil & Gas Operator | Dec 2023 |
| 1040 | Dominion Energy Transmission, Inc. | | Oil & Gas Operator | Dec 2019 |
| 1041 | Dominion Exp Midcontinent Inc | Oklahoma City, OK 73134-2616 | Oil & Gas Operator | Jan 2024 |
| 1042 | Dominion Exploration & Production Inc | Houston, TX 77060 | Oil & Gas Operator | Apr 2015 |
| 1043 | Dominion Field Services Inc | Richmond, VA 23219 | Oil & Gas Operator | Dec 2013 |
| 1044 | Dominion Midstream Services, LP | | Oil Operator | Dec 2006 |
| 1045 | Dominion Midwest Energy Inc | | Oil & Gas Operator | Dec 2007 |
| 1046 | Dominion Minerals Corporation | Houston, TX 77014 | Oil & Gas Operator | Nov 2009 |
| 1047 | Dominion Natural Resources LLC | Dallas, TX 75367 | Oil & Gas Operator | Apr 2024 |
| 1048 | Dominion Ok TX E & P Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2018 |
| 1049 | Dominion Oklahoma Texas E&P, Inc | Richmond, VA 23219 | Oil & Gas Operator | Sep 2018 |
| 1050 | Dominion Oklahoma Texas Expl & Prod Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |
| 1051 | Dominion Oklahoma Texas Exploration & Production | Houston, TX 77060 | Oil & Gas Operator | Dec 2006 |
| 1052 | Dominion Operating, LLC | Midland, TX 79708 | Oil Operator | Mar 2018 |
| 1053 | Dominion Production Company, LLC | Tampa, FL 33606 | Oil & Gas Operator | Apr 2024 |
| 1054 | Dominion Resources, Inc | Staffordsville, KY 41256 | Oil & Gas Operator | Dec 2014 |
| 1055 | Dominiq Operating, Inc | Scurry, TX 75158 | Oil Operator | Dec 2022 |
| 1056 | Domino Operations, Inc. | Abilene, TX 79603 | Oil & Gas Operator | Apr 2024 |
| 1057 | Domino Prod Services Inc | Bellville, TX 77418 | Oil & Gas Operator | Feb 2004 |
| 1058 | Dominy Oil Co., Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Oct 1999 |
| 1059 | Don Bar Investment Company | Windthorst, TX 76389 | Oil & Gas Operator | Feb 2004 |
| 1060 | Don Byers Oil & Gas LLC | Heath, OH 43056 | Oil & Gas Operator | Dec 2023 |
| 1061 | Don Erbert Oil Company | | Oil Operator | Oct 2013 |
| 1062 | Don G. Wiley, Jr. | | Oil Operator | Dec 1979 |
| 1063 | Don Karst Well Service, Inc. | Russell, KS 67665 | Oil Operator | Dec 2023 |
| 1064 | Don Peterson Company, LLC - | Loving, TX 76460 | Oil Operator | Apr 2024 |
| 1065 | Don R Ormand | Midland, TX 79702 | Oil & Gas Operator | Jun 2014 |
| 1066 | Don Sims Oil | | Oil Operator | Dec 2023 |
| 1067 | Don Townes | | Oil Operator | Sep 2000 |
| 1068 | Don W. Holcomb | | Oil Operator | Feb 1996 |
| 1069 | Don Webb | | Oil Operator | Mar 1984 |
| 1070 | Don Yohe Enterprises And Devonian Energy Inc | | Gas Operator | Dec 1999 |
| 1071 | Don Yohe Enterprises Inc. | Armada, MI 48005 | Oil & Gas Operator | Apr 2018 |
| 1072 | Don'S Oil Company Inc | Oxford, KS 67119-0006 | Oil Operator | Apr 2011 |
| 1073 | Don-Dale, Inc. | Clarksville, TX 75426 | Oil & Gas Operator | Aug 2003 |
| 1074 | Donahue Pipeline Construction, Inc. | Branchland, WV 25506 | Gas Operator | Dec 2021 |
| 1075 | Donaker Alan M | Warsaw, OH 43844 | Oil & Gas Operator | Dec 1994 |
| 1076 | Donald & Danny Dews Production | | Oil Operator | Jan 2024 |
| 1077 | Donald C Slawson Expl Co. Inc | | Oil & Gas Operator | Dec 2020 |
| 1078 | Donald C. Ring Revocable Trust | Sebring, FL 33875 | Gas Operator | Dec 2022 |
| 1079 | Donald C. Slawson | | Oil Operator | Jun 1985 |
| 1080 | Donald J. Zadeck | | Oil & Gas Operator | Feb 1998 |
| 1081 | Donald Len Barreth | | Oil & Gas Operator | Dec 1991 |
| 1082 | Donald Owens | | Oil & Gas Operator | Dec 2023 |
| 1083 | Donaldson Richard E | Bartlesville, OK 74005-0032 | Oil & Gas Operator | Nov 2005 |
| 1084 | Donalu Oil | Pampa, TX 79066 | Oil & Gas Operator | Apr 2024 |
| 1085 | Doneghy James | Wellington, TX 79095 | Oil & Gas Operator | May 2013 |
| 1086 | Donke Oil & Gas, LLC | Tulsa, OK 74137 | Oil & Gas Operator | Mar 2018 |
| 1087 | Donn G. Thompson, Et Al | | Oil Operator | Apr 1987 |
| 1088 | Donna Lee Oil Company, Inc. | Independence, KS 67301 | Oil & Gas Operator | Apr 2014 |
| 1089 | Donna-Lynne Oil Co. | George West, TX 78022 | Oil & Gas Operator | Jun 2018 |
| 1090 | Donnell Pipe & Supply Co/TX Corp | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2008 |
| 1091 | Donnell, Bill | Graham, TX 76450 | Oil & Gas Operator | May 1995 |
| 1092 | Donnell, Louis, Jr. | South Bend, TX 76481 | Oil & Gas Operator | Mar 2008 |
| 1093 | Donnelly Casing Pulling Co | | Oil Operator | Aug 2020 |
| 1094 | Donnie R. Morrow | | Oil Operator | Dec 2023 |
| 1095 | Donny Joe Barnhill | | Gas Operator | Dec 2023 |
| 1096 | Donoco Oil Company | La Vernia, TX 78121 | Oil & Gas Operator | Apr 2024 |
| 1097 | Donray Petroleum LLC | Oklahoma City, OK 73112-7230 | Oil & Gas Operator | Jan 2024 |
| 1098 | Donson Corporation | Edmond, OK 73083-0341 | Oil & Gas Operator | Jul 1997 |
| 1099 | Doodlebug Oil Company | | Oil Operator | Jun 2006 |
| 1100 | Doolaree Corporation | Sherman, TX 75091 | Oil & Gas Operator | Apr 2024 |