| 8101 | Doralex Energy, Inc. | San Angelo, TX 76904 | Oil Operator | Feb 2000 |
| 8102 | Doran & Associates | Pittsburgh, PA 15220 | Oil & Gas Operator | Dec 1988 |
| 8103 | Doran & Braddock & Nelson Petr | | Oil Operator | Feb 1982 |
| 8104 | Doran And Braddock | | Oil & Gas Operator | Nov 1984 |
| 8105 | Dorbert Oil & Gas, Inc. | | Gas Operator | Aug 1988 |
| 8106 | Dorcheat Oil & Gas, LLC | | Oil & Gas Operator | Dec 2024 |
| 8107 | Dorchester Exploration, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 2001 |
| 8108 | Dorchester Hugot | | Gas Operator | Sep 1993 |
| 8109 | Dorchester Hugoton LTD | Garland, TX 75042-8212 | Oil & Gas Operator | Mar 2004 |
| 8110 | Dorchester Minerals Operating LP | Dallas, TX 75219 | Oil & Gas Operator | Jun 2022 |
| 8111 | Dorchester Operating Company LLC | Refugio, TX 78377 | Oil & Gas Operator | Jun 2026 |
| 8112 | Dorchester Resources LP | Oklahoma City, OK 73154-8879 | Oil & Gas Operator | Aug 2021 |
| 8113 | Dore Corporation | Amarillo, TX 79119 | Gas Operator | Jun 2010 |
| 8114 | Dore Energy Co., LTD. | Amarillo, TX 79101 | Gas Operator | Jun 2026 |
| 8115 | Dore-Dyn Production Co., Inc. | | Oil & Gas Operator | Jul 1993 |
| 8116 | Dorey Oil Corporation | Healdton, OK 73438-0856 | Oil Operator | Apr 2014 |
| 8117 | Dorfman Production Company | Beloit, OH 44609 | Oil & Gas Operator | Jun 2026 |
| 8118 | Dorfs Drilling Company | Waurika, OK 73573 | Oil & Gas Operator | Nov 2024 |
| 8119 | Dorland, D. L. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 8120 | Dorland, D. L. Estate Of | Midland, TX 79702 | Oil & Gas Operator | Nov 1994 |
| 8121 | Dorland, D. L. Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 1994 |
| 8122 | Dorondoco Operating Co., Inc. | Brownwood, TX 76801 | Oil & Gas Operator | May 1994 |
| 8123 | Dorothy Boyce | Artesia, NM 88210 | Oil & Gas Operator | Sep 2000 |
| 8124 | Dorothy F. Hamlin | | Oil Operator | Dec 1985 |
| 8125 | Dorothy Oil Company | | Oil & Gas Operator | Oct 1994 |
| 8126 | Dorough, Lee Operations | Orlando, FL 32801 | Oil & Gas Operator | Jun 2026 |
| 8127 | Dorr, John R. | Pecos, TX 79772 | Oil & Gas Operator | Jun 2026 |
| 8128 | Dorsey Oil & Gas LLC | Nashport, OH 43830 | Oil & Gas Operator | Dec 2025 |
| 8129 | Dorso Energy | Wexford, PA 15090 | Oil & Gas Operator | Dec 2004 |
| 8130 | Dorso LLC | Wexford, PA 15090-8758 | Oil & Gas Operator | Dec 2005 |
| 8131 | Dorso LP | Wexford, PA 15090-8314 | Oil & Gas Operator | Dec 2024 |
| 8132 | Dorward Energy Corporation | Saint Petersburg, FL 33701-3255 | Oil & Gas Operator | Dec 2024 |
| 8133 | Dos Cicadas | Miles, TX 76861 | Oil & Gas Operator | Jun 2026 |
| 8134 | Dos Lobos Oil Co. | | Oil Operator | Dec 1999 |
| 8135 | Dos Rios Inc. | | Gas Operator | Mar 2026 |
| 8136 | Dossie Dews | | Oil & Gas Operator | Dec 2024 |
| 8137 | Dotson Jack M Operating Co | Norman, OK 73072-6649 | Oil Operator | Oct 1993 |
| 8138 | Dotson, Floyd | | Oil Operator | Dec 1980 |
| 8139 | Dotson, Robert M | | Oil Operator | Dec 2020 |
| 8140 | Doty, Tim | Sedan, KS 67361 | Oil Operator | Dec 2009 |
| 8141 | Double "C" Energy | Coweta, OK 74429 | Oil & Gas Operator | Mar 2015 |
| 8142 | Double "K" Oil, Inc. | Ellis, KS 67637 | Oil Operator | Dec 2019 |
| 8143 | Double 'B' Oil Co | | Oil Operator | Nov 2009 |
| 8144 | Double 'B' Oil I | | Oil Operator | Feb 1992 |
| 8145 | Double 'E' Oil-B | | Oil Operator | Mar 1989 |
| 8146 | Double Aa Oil, L.L.C. | | Oil Operator | Aug 2023 |
| 8147 | Double Aa S LLC | Mayport, PA 16240-5638 | Oil & Gas Operator | Dec 2019 |
| 8148 | Double Barrel Oil Co. | | Oil Operator | Dec 1978 |
| 8149 | Double Barrel Oil LLC | Brenham, TX 77834 | Oil & Gas Operator | Jun 2026 |
| 8150 | Double Barrel Operating Limited Liability Company | Wichita Falls, TX 76308 | Oil Operator | Jun 2026 |
| 8151 | Double C Oil & Gas LLC | Jenks, OK 74037-6946 | Oil Operator | Dec 2025 |
| 8152 | Double C Operating LLC | Abilene, TX 79602 | Oil Operator | Jun 2026 |
| 8153 | Double C Production, LLC | New Braunfels, TX 78131 | Oil Operator | Jun 2026 |
| 8154 | Double D Oil Co | Winfield, KS 67156 | Oil Operator | Feb 2026 |
| 8155 | Double D Producers, Inc | Edmonton, KY 42129 | Oil Operator | Dec 2024 |
| 8156 | Double D'S LLC | Hays, KS 67601 | Oil Operator | Feb 2026 |
| 8157 | Double Diamond Energy Corp. | Granbury, TX 76048 | Gas Operator | Apr 2013 |
| 8158 | Double Diamond Petroleum, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2026 |
| 8159 | Double E Oil & Gas, L. P. | Electra, TX 76360 | Oil & Gas Operator | Jun 2026 |
| 8160 | Double Eagle Exp | | Oil Operator | Jul 1992 |
| 8161 | Double Eagle Exploration Inc | Windthorst, TX 76389 | Oil Operator | Feb 2026 |
| 8162 | Double Eagle Oil & Gas Inc | Enid, OK 73702 | Oil & Gas Operator | Jan 2000 |
| 8163 | Double Eagle Oil Co. | Marshall, TX 75670 | Oil & Gas Operator | Jan 2002 |
| 8164 | Double Eagle Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2026 |
| 8165 | Double Eagle Petroleum Corp | Evansville, IN 47725 | Oil & Gas Operator | Jun 2026 |
| 8166 | Double Eagle Resources, LLC | FT Smith, AR 72901 | Oil & Gas Operator | Sep 2009 |
| 8167 | Double Eight Oil Company LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Jun 2026 |
| 8168 | Double F Oil Co. | | Oil Operator | Jun 2009 |
| 8169 | Double G Oil LLC | | Oil Operator | Apr 2026 |
| 8170 | Double G Petro LLC | | Oil Operator | Feb 2026 |
| 8171 | Double H Petroleum Corporation | Tulsa, OK 74136-5414 | Oil & Gas Operator | May 2006 |
| 8172 | Double J Enterprises | Loving, TX 76460 | Oil Operator | Jun 2026 |
| 8173 | Double J Oil Co LLC | Bristow, OK 74010 | Oil & Gas Operator | Apr 2026 |
| 8174 | Double J Operating Company, Inc. | San Antonio, TX 78205 | Oil Operator | Jan 2008 |
| 8175 | Double J Resources Inc | Bradford, PA 16701-6506 | Oil & Gas Operator | Dec 2022 |
| 8176 | Double K Production | Graham, TX 76450 | Oil & Gas Operator | Sep 2014 |
| 8177 | Double L Contractors, LLC | Carthage, TX 75633 | Oil Operator | Jun 2026 |
| 8178 | Double L Drilling | Yates Center, KS 66783 | Oil Operator | Jun 2000 |
| 8179 | Double L Oil Producers | | Oil Operator | Dec 2019 |
| 8180 | Double L Operating | Graham, TX 76450 | Oil & Gas Operator | Nov 2018 |
| 8181 | Double M Petroproperties, Inc. | Haskell, TX 79521 | Oil & Gas Operator | Jun 2026 |
| 8182 | Double Play Oil & Gas | Portland, TX 78374 | Oil & Gas Operator | Dec 2001 |
| 8183 | Double Play Oil & Gas, Inc | Portland, TX 78374 | Oil & Gas Operator | Jun 2026 |
| 8184 | Double R Oil Co. | Charlotte, TX 78011 | Oil & Gas Operator | May 2010 |
| 8185 | Double R Petroleum | | Oil & Gas Operator | Sep 2004 |
| 8186 | Double S Liberty Energy, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2026 |
| 8187 | Double S Operating Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2026 |
| 8188 | Double T Energy LLC | Lenorah, TX 79749 | Oil Operator | Jun 2026 |
| 8189 | Double Ten Petro | | Oil Operator | Jul 1994 |
| 8190 | Double U Oil Co. | San Antonio, TX 78217 | Oil & Gas Operator | Feb 1996 |
| 8191 | Double U Oil Co., LTD. | San Antonio, TX 78217 | Oil & Gas Operator | May 2000 |
| 8192 | Doudna, Mark A. | Osawatomie, KS 66064 | Oil Operator | Nov 2009 |
| 8193 | Doug And Janene Risenhoover Oil And Gas LLC | Cushing, OK 74023 | Oil Operator | Apr 2026 |
| 8194 | Doug'S Pumping Service | | Oil Operator | Feb 2026 |
| 8195 | Dougherty Properties | Beeville, TX 78104 | Oil & Gas Operator | Jun 1997 |
| 8196 | Dougherty, H W | Petaluma, CA 94954 | Gas Operator | Oct 2019 |
| 8197 | Doughtie Operating Company, LLC | MC Queeney, TX 78123 | Oil & Gas Operator | Mar 2023 |
| 8198 | Douglas Edwards | | Oil Operator | Nov 1993 |
| 8199 | Douglas Fairbanks Holdings LLC | Pine Hurst, TX 77362-9998 | Oil & Gas Operator | Apr 2026 |
| 8200 | Douglas Investments Inc | Fort Worth, TX 76137 | Oil Operator | Jan 2020 |