| 8101 | Domestic Oil Producers | | Oil Operator | Oct 1980 |
| 8102 | Domestic Oil Producers,Inc. | | Oil Operator | Oct 1998 |
| 8103 | Domestic Oil Production | | Oil & Gas Operator | Oct 1989 |
| 8104 | Dominguez Energy L.P. | | Oil & Gas Operator | Dec 2000 |
| 8105 | Dominguez Properties | | Oil & Gas Operator | Dec 1991 |
| 8106 | Dominion Corporation | Houston, TX 77001 | Oil & Gas Operator | Dec 2010 |
| 8107 | Dominion Energy Transmission, Inc. | | Oil & Gas Operator | Dec 2019 |
| 8108 | Dominion Exp Midcontinent Inc | Oklahoma City, OK 73134-2616 | Oil & Gas Operator | Oct 2024 |
| 8109 | Dominion Exploration & Production Inc | Houston, TX 77060 | Oil & Gas Operator | Apr 2015 |
| 8110 | Dominion Field Services Inc | Richmond, VA 23219 | Oil & Gas Operator | Dec 2013 |
| 8111 | Dominion Midstream Services, LP | | Oil Operator | Dec 2006 |
| 8112 | Dominion Midwest Energy Inc | | Oil & Gas Operator | Dec 2007 |
| 8113 | Dominion Minerals Corporation | Houston, TX 77014 | Oil & Gas Operator | Nov 2009 |
| 8114 | Dominion Natural Resources LLC | Dallas, TX 75367 | Oil & Gas Operator | Aug 2026 |
| 8115 | Dominion Ok TX E & P Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2018 |
| 8116 | Dominion Oklahoma Texas E&P, Inc | Richmond, VA 23219 | Oil & Gas Operator | Sep 2018 |
| 8117 | Dominion Oklahoma Texas Expl & Prod Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |
| 8118 | Dominion Oklahoma Texas Exploration & Production | Houston, TX 77060 | Oil & Gas Operator | Dec 2006 |
| 8119 | Dominion Operating, LLC | Midland, TX 79708 | Oil Operator | Mar 2018 |
| 8120 | Dominion Production Company, LLC | Tampa, FL 33606 | Oil & Gas Operator | Aug 2026 |
| 8121 | Dominion Resources, Inc | Staffordsville, KY 41256 | Oil & Gas Operator | Dec 2024 |
| 8122 | Dominiq Operating, Inc | Scurry, TX 75158 | Oil Operator | Dec 2023 |
| 8123 | Domino Operations, Inc. | Abilene, TX 79603 | Oil & Gas Operator | Aug 2026 |
| 8124 | Domino Prod Services Inc | Bellville, TX 77418 | Oil & Gas Operator | Feb 2004 |
| 8125 | Dominy Oil Co., Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Oct 1999 |
| 8126 | Don Bar Investment Company | Windthorst, TX 76389 | Oil & Gas Operator | Feb 2004 |
| 8127 | Don Byers Oil & Gas LLC | Heath, OH 43056 | Oil & Gas Operator | Dec 2025 |
| 8128 | Don Erbert Oil Company | | Oil Operator | Oct 2013 |
| 8129 | Don G. Wiley, Jr. | | Oil Operator | Dec 1979 |
| 8130 | Don Karst Well Service, Inc. | Russell, KS 67665 | Oil Operator | Mar 2026 |
| 8131 | Don Peterson Company, LLC - | Loving, TX 76460 | Oil Operator | Aug 2026 |
| 8132 | Don R Ormand | Midland, TX 79702 | Oil & Gas Operator | Jun 2014 |
| 8133 | Don Sims Oil | | Oil Operator | Apr 2026 |
| 8134 | Don Townes | | Oil Operator | Sep 2000 |
| 8135 | Don W. Holcomb | | Oil Operator | Feb 1996 |
| 8136 | Don Webb | | Oil Operator | Mar 1984 |
| 8137 | Don Yohe Enterprises And Devonian Energy Inc | | Gas Operator | Dec 1999 |
| 8138 | Don Yohe Enterprises Inc. | Armada, MI 48005 | Oil & Gas Operator | Apr 2018 |
| 8139 | Don'S Oil Company Inc | Oxford, KS 67119-0006 | Oil Operator | Apr 2011 |
| 8140 | Don-Dale, Inc. | Clarksville, TX 75426 | Oil & Gas Operator | Aug 2003 |
| 8141 | Donaker Alan M | Warsaw, OH 43844 | Oil & Gas Operator | Dec 1994 |
| 8142 | Donald & Danny Dews Production | | Oil Operator | Jan 2025 |
| 8143 | Donald C Slawson Expl Co. Inc | | Oil & Gas Operator | Dec 2020 |
| 8144 | Donald C. Ring Revocable Trust | Sebring, FL 33875 | Gas Operator | Dec 2025 |
| 8145 | Donald C. Slawson | | Oil Operator | Jun 1985 |
| 8146 | Donald E & Janet L Rearick | Ford City, PA 16226-9801 | Gas Operator | Dec 2025 |
| 8147 | Donald J. Zadeck | | Oil & Gas Operator | Feb 1998 |
| 8148 | Donald Len Barreth | | Oil & Gas Operator | Dec 1991 |
| 8149 | Donald Owens | | Oil & Gas Operator | Dec 2024 |
| 8150 | Donaldson Richard E | Bartlesville, OK 74005-0032 | Oil & Gas Operator | Nov 2005 |
| 8151 | Donalu Oil | Pampa, TX 79066 | Oil & Gas Operator | Jan 2026 |
| 8152 | Doneghy James | Wellington, TX 79095 | Oil & Gas Operator | May 2013 |
| 8153 | Donke Oil & Gas, LLC | Tulsa, OK 74137 | Oil & Gas Operator | Mar 2018 |
| 8154 | Donn G. Thompson, Et Al | | Oil Operator | Apr 1987 |
| 8155 | Donna Lee Oil Co | Independence, KS 67301 | Oil & Gas Operator | Apr 2014 |
| 8156 | Donna-Lynne Oil Co. | George West, TX 78022 | Oil & Gas Operator | Jun 2018 |
| 8157 | Donnell Pipe & Supply Co/TX Corp | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2008 |
| 8158 | Donnell, Bill | Graham, TX 76450 | Oil & Gas Operator | May 1995 |
| 8159 | Donnell, Louis, Jr. | South Bend, TX 76481 | Oil & Gas Operator | Mar 2008 |
| 8160 | Donnelly Casing Pulling Co | | Oil Operator | Aug 2020 |
| 8161 | Donnie R. Morrow | | Oil Operator | Dec 2024 |
| 8162 | Donny Joe Barnhill | | Gas Operator | Dec 2024 |
| 8163 | Donoco Oil Company | La Vernia, TX 78121 | Oil & Gas Operator | Aug 2026 |
| 8164 | Donovan Joe D Or L P McElwaine | Tulsa, OK 74119 | Gas Operator | Jan 2014 |
| 8165 | Donray Petroleum LLC | Choctaw, OK 73020 | Oil & Gas Operator | Apr 2026 |
| 8166 | Donson Corporation | Edmond, OK 73083-0341 | Oil & Gas Operator | Jul 1997 |
| 8167 | Doodlebug Oil Co | | Oil Operator | Jun 2006 |
| 8168 | Doolaree Corporation | Sherman, TX 75091 | Oil & Gas Operator | Aug 2026 |
| 8169 | Dooley Oil | Cushing, OK 74023 | Oil Operator | Apr 2026 |
| 8170 | Dooley, Jeff | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2012 |
| 8171 | Doonan & Sons In | | Oil Operator | Apr 1995 |
| 8172 | Doonan And Sons, Inc. | Great Bend, KS 67530 | Oil Operator | Apr 2021 |
| 8173 | Dora Inc | Levelland, TX 79336 | Oil & Gas Operator | Jul 2019 |
| 8174 | Dorado Drilling, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2026 |
| 8175 | Dorado E & P Partners LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2026 |
| 8176 | Dorado Energy LLC | Edmond, OK 73012 | Oil & Gas Operator | Jan 2021 |
| 8177 | Dorado Gas Resources LLC | Centennial, CO 80112 | Oil & Gas Operator | Jul 2009 |
| 8178 | Dorado Oil Company | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Oct 2013 |
| 8179 | Dorado Operating Inc. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2011 |
| 8180 | Doral Energy Corp. | Midland, TX 79708 | Oil & Gas Operator | Jun 2012 |
| 8181 | Doralex Energy I | | Oil & Gas Operator | Feb 1995 |
| 8182 | Doralex Energy, Inc. | San Angelo, TX 76904 | Oil Operator | Feb 2000 |
| 8183 | Doran & Associates | Pittsburgh, PA 15220 | Oil & Gas Operator | Dec 1988 |
| 8184 | Doran & Braddock & Nelson Petr | | Oil Operator | Feb 1982 |
| 8185 | Doran And Braddock | | Oil & Gas Operator | Nov 1984 |
| 8186 | Dorbert Oil & Gas, Inc. | | Gas Operator | Aug 1988 |
| 8187 | Dorcheat Oil & Gas, LLC | | Oil & Gas Operator | Dec 2024 |
| 8188 | Dorchester Exploration, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 2001 |
| 8189 | Dorchester Hugot | | Gas Operator | Sep 1993 |
| 8190 | Dorchester Hugoton LTD | Garland, TX 75042-8212 | Oil & Gas Operator | Mar 2004 |
| 8191 | Dorchester Minerals Operating LP | Dallas, TX 75219 | Oil & Gas Operator | Jun 2022 |
| 8192 | Dorchester Operating Company LLC | Refugio, TX 78377 | Oil & Gas Operator | Aug 2026 |
| 8193 | Dorchester Resources LP | Oklahoma City, OK 73154-8879 | Oil & Gas Operator | Aug 2021 |
| 8194 | Dore Corporation | Amarillo, TX 79119 | Gas Operator | Jun 2010 |
| 8195 | Dore Energy Co., LTD. | Amarillo, TX 79101 | Gas Operator | Aug 2026 |
| 8196 | Dore-Dyn Production Co., Inc. | | Oil & Gas Operator | Jul 1993 |
| 8197 | Dorey Oil Corporation | Healdton, OK 73438-0856 | Oil Operator | Apr 2014 |
| 8198 | Dorfman Production Company | Beloit, OH 44609 | Oil & Gas Operator | Aug 2026 |
| 8199 | Dorfs Drilling Company | Waurika, OK 73573 | Oil & Gas Operator | Nov 2024 |
| 8200 | Dorland, D. L. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |