| 8301 | DKM Offshore Energy Inc. | | Oil & Gas Operator | Dec 1993 |
| 8302 | DKM Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2011 |
| 8303 | DKMR Oil Company, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Apr 2017 |
| 8304 | DKT Energy LLC | Edmond, OK 73083-6844 | Oil & Gas Operator | Sep 2014 |
| 8305 | DKW Energy, Inc. | Sherman Oaks, CA 91403 | Oil & Gas Operator | Apr 2025 |
| 8306 | DL Energy, LLC | Saco, MT 59261 | Gas Operator | Jan 2025 |
| 8307 | DL Resources Inc | Ludlow, PA 16333-0039 | Oil & Gas Operator | Dec 2024 |
| 8308 | DLB Energy Corporation | Oklahoma City, OK 73118-1401 | Oil & Gas Operator | Dec 2014 |
| 8309 | DLB Oil & Gas, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Apr 2025 |
| 8310 | DLJ Investments, LLC | Springboro, OH 45006 | Oil Operator | Dec 2023 |
| 8311 | DLKB Operating LLC | Eufaula, OK 74432 | Gas Operator | Jan 2025 |
| 8312 | DLM Energy | Houston, TX 77058 | Oil & Gas Operator | Sep 1994 |
| 8313 | DLM Oil | | Oil Operator | Nov 2008 |
| 8314 | DLM Ventures | | Oil & Gas Operator | Dec 2004 |
| 8315 | DLM Ventures LLC | | Oil & Gas Operator | Dec 2004 |
| 8316 | DM Backhoe Service | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 8317 | DM Petroleum LLC | Duncan, OK 73533 | Oil Operator | Jan 2025 |
| 8318 | DMH Petroleum, Inc. | Sterling, KS 67579 | Oil Operator | Nov 2024 |
| 8319 | DML Exploration, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 8320 | DMS Investments Inc | Tulsa, OK 74132-2690 | Oil & Gas Operator | Mar 2015 |
| 8321 | DMS Oil Company | Houston, TX 77042 | Oil & Gas Operator | Feb 2025 |
| 8322 | DMV Pipeline LLC | Plano, TX 75074 | Oil & Gas Operator | Apr 2025 |
| 8323 | Dna Petroleum Inc. | | Oil Operator | Dec 2004 |
| 8324 | DNB Drilling, Inc. | Wichita, KS 67208 | Oil & Gas Operator | Jan 2001 |
| 8325 | DNL Oil Corp | New Lexington, OH 43764 | Oil & Gas Operator | Dec 2012 |
| 8326 | DNR Oil And Gas, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Feb 2025 |
| 8327 | Dobbins Family Residual Trust | Ardmore, OK 73401 | Oil Operator | Jul 2008 |
| 8328 | Dobbs Oil & Gas | | Oil Operator | Dec 2013 |
| 8329 | Dobbs Petroleum Co. | Abilene, TX 79606 | Oil & Gas Operator | Apr 2025 |
| 8330 | Dobrinski, Mark E., A General Partnership | Coldwater, KS 67029 | Oil Operator | Feb 2008 |
| 8331 | Dobson Oil And Gas LLC | Deer Creek, OK 74636-9521 | Oil Operator | Aug 2022 |
| 8332 | Dobson Oil Operators Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Dec 2004 |
| 8333 | Doc Oil | Brownwood, TX 76801 | Oil & Gas Operator | Oct 2019 |
| 8334 | Doc Oil Corp. | | Oil Operator | Dec 2006 |
| 8335 | Doc'S Tank Trucks | Jacksboro, TX 76458 | Oil Operator | Jun 2007 |
| 8336 | Docherty Operating, L.L.C. | | Oil Operator | Dec 2024 |
| 8337 | Docking Developm | | Oil & Gas Operator | Dec 1996 |
| 8338 | Docking Development Company, LLC | Arkansas City, KS 67005 | Oil & Gas Operator | Oct 2013 |
| 8339 | Doco Development Corporation | Norman, OK 73072 | Oil & Gas Operator | Feb 2025 |
| 8340 | Dodd Oil & Gas | Spencer, WV 25276 | Oil & Gas Operator | Dec 2021 |
| 8341 | Dodd, C. C., Oil & Gas | | Oil & Gas Operator | Dec 2021 |
| 8342 | Dodson Prairie Oil & Gas LLC | San Antonio, TX 78205 | Gas Operator | Apr 2025 |
| 8343 | Dodson, Inc. | San Antonio, TX 78232 | Oil & Gas Operator | Oct 1998 |
| 8344 | Dodson, Wayne Consultants, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Jul 2003 |
| 8345 | Doege, Donald | La Vernia, TX 78121 | Oil & Gas Operator | Apr 2025 |
| 8346 | Doege, Harry | La Vernia, TX 78121 | Oil & Gas Operator | Aug 2003 |
| 8347 | Doenges, William C. | Pampa, TX 79065 | Gas Operator | Jun 1993 |
| 8348 | Doggy Oil Corp | Decatur, GA 30031 | Oil & Gas Operator | Apr 2025 |
| 8349 | Dogwood Operating Company, Inc. | Houston, TX 77069 | Oil & Gas Operator | Apr 2025 |
| 8350 | Dol Resources Inc | Rowlett, TX 75088 | Oil & Gas Operator | Mar 2025 |
| 8351 | Dolberry Energy Resources Corp. | Dallas, TX 75252 | Oil Operator | Apr 2025 |
| 8352 | Dolch Production, Inc. | San Antonio, TX 78248 | Oil & Gas Operator | Jul 1996 |
| 8353 | Dole Enterprises Inc. | | Oil & Gas Operator | Dec 2024 |
| 8354 | Dolezal George Jr | Littleton, CO 80163 | Oil & Gas Operator | Sep 2006 |
| 8355 | Dolinar, Michael J. | Angola, NY 14006 | Gas Operator | Dec 2023 |
| 8356 | Dolphin Energy LLC | Lake Worth, FL 33467 | Oil & Gas Operator | Dec 2024 |
| 8357 | Dolphin Petroleum | Alice, TX 78333 | Oil & Gas Operator | Jun 2008 |
| 8358 | Dolphin Petroleum, LP | Alice, TX 78333 | Oil & Gas Operator | Apr 2025 |
| 8359 | Domac Oil Company Inc | Perkins, OK 74059-0642 | Oil & Gas Operator | Feb 2006 |
| 8360 | Domar Oil & Gas | | Gas Operator | May 1995 |
| 8361 | Domar Oil & Gas, Inc. | Liberal, KS 67905 | Oil & Gas Operator | Oct 2000 |
| 8362 | Dome De Sel LLC | | Oil & Gas Operator | Nov 2024 |
| 8363 | Dome Drilling Co | Westlake, OH 44145-1964-1964 | Oil & Gas Operator | Dec 2009 |
| 8364 | Dome Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
| 8365 | Dome Producing | Cleveland, OH 44114 | Oil & Gas Operator | Dec 1988 |
| 8366 | Domestic Crude | Graham, TX 76450 | Oil & Gas Operator | Jul 2000 |
| 8367 | Domestic Energy Corporation | | Oil Operator | Jan 1988 |
| 8368 | Domestic Oil & Gas Co | Bedford, OH 44146 | Oil & Gas Operator | Dec 1990 |
| 8369 | Domestic Oil Producers | | Oil Operator | Oct 1980 |
| 8370 | Domestic Oil Producers,Inc. | | Oil Operator | Oct 1998 |
| 8371 | Domestic Oil Production | | Oil & Gas Operator | Oct 1989 |
| 8372 | Dominex, Inc. | | Gas Operator | Jan 1986 |
| 8373 | Dominguez Energy L.P. | | Oil & Gas Operator | Dec 2000 |
| 8374 | Dominguez Properties | | Oil & Gas Operator | Dec 1991 |
| 8375 | Dominion Corporation | Houston, TX 77001 | Oil & Gas Operator | Dec 2010 |
| 8376 | Dominion East Ohio | North Canton, OH 44720 | Oil & Gas Operator | Dec 2023 |
| 8377 | Dominion Energy Transmission, Inc. | | Oil & Gas Operator | Dec 2019 |
| 8378 | Dominion Exp Midcontinent Inc | Oklahoma City, OK 73134-2616 | Oil & Gas Operator | Oct 2024 |
| 8379 | Dominion Exploration & Production Inc | Houston, TX 77060 | Oil & Gas Operator | Apr 2015 |
| 8380 | Dominion Field Services Inc | Richmond, VA 23219 | Oil & Gas Operator | Dec 2013 |
| 8381 | Dominion Midstream Services, LP | | Oil Operator | Dec 2006 |
| 8382 | Dominion Midwest Energy Inc | | Oil & Gas Operator | Dec 2007 |
| 8383 | Dominion Minerals Corporation | Houston, TX 77014 | Oil & Gas Operator | Nov 2009 |
| 8384 | Dominion Natural Resources LLC | Dallas, TX 75367 | Oil & Gas Operator | Apr 2025 |
| 8385 | Dominion Oil & Gas Corporation | Irving, TX 75039 | Oil & Gas Operator | Jun 2012 |
| 8386 | Dominion Ok TX E & P Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2018 |
| 8387 | Dominion Oklahoma Texas E&P, Inc | Richmond, VA 23219 | Oil & Gas Operator | Sep 2018 |
| 8388 | Dominion Oklahoma Texas Expl & Prod Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |
| 8389 | Dominion Oklahoma Texas Exploration & Production | Houston, TX 77060 | Oil & Gas Operator | Dec 2006 |
| 8390 | Dominion Operating, LLC | Midland, TX 79708 | Oil Operator | Mar 2018 |
| 8391 | Dominion Production Company, LLC | Tampa, FL 33606 | Oil & Gas Operator | Apr 2025 |
| 8392 | Dominion Resources, Inc | Staffordsville, KY 41256 | Oil & Gas Operator | Dec 2014 |
| 8393 | Dominiq Operating, Inc | Scurry, TX 75158 | Oil Operator | Dec 2023 |
| 8394 | Domino Operations, Inc. | Abilene, TX 79603 | Oil & Gas Operator | Apr 2025 |
| 8395 | Domino Prod Services Inc | Bellville, TX 77418 | Oil & Gas Operator | Feb 2004 |
| 8396 | Dominus Energy, Inc | Austin, TX 78737 | Oil & Gas Operator | Dec 2020 |
| 8397 | Dominy Oil Co., Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Oct 1999 |
| 8398 | Don Bar Investment Company | Windthorst, TX 76389 | Oil & Gas Operator | Feb 2004 |
| 8399 | Don Byers Oil & Gas LLC | Heath, OH 43056 | Oil & Gas Operator | Dec 2024 |
| 8400 | Don Erbert Oil Company | | Oil Operator | Oct 2013 |