| 8301 | Dragoon Oil & Gas Co. | Fort Worth, TX 76147 | Oil & Gas Operator | May 2015 |
| 8302 | Drain Oil Co. | Fritch, TX 79036 | Oil & Gas Operator | Jul 2009 |
| 8303 | Drain Oil Co. LLC | Fritch, TX 79036 | Oil & Gas Operator | May 2026 |
| 8304 | Drake Denver | Shinglehouse, PA 16748-5517 | Oil & Gas Operator | Dec 2025 |
| 8305 | Drake Energy Corporation | | Gas Operator | Dec 2024 |
| 8306 | Drake Exploration Inc | Tulsa, OK 74105-4250 | Oil & Gas Operator | Feb 2026 |
| 8307 | Drake Exploration LLC | Arkansas City, KS 67005 | Oil & Gas Operator | Feb 2026 |
| 8308 | Drake Oil & Gas, LLC | Wichita Falls, TX 76308 | Oil Operator | May 2026 |
| 8309 | Drake Petroleum, LLC | Cypress, TX 77429 | Oil & Gas Operator | Jun 2023 |
| 8310 | Drake, Stuart | | Oil Operator | Dec 2013 |
| 8311 | Draw Oil & Gas Inc | | Oil & Gas Operator | Jun 1995 |
| 8312 | Drawings, LLC | Albuquerque, NM 87109 | Oil Operator | Aug 2025 |
| 8313 | DRD Operating Company | | Oil & Gas Operator | Feb 2014 |
| 8314 | Dreher, George R. | Midland, TX 79702 | Oil & Gas Operator | Jan 2018 |
| 8315 | Dreiling Exploration LLC | Victoria, KS 67671 | Oil Operator | Mar 2018 |
| 8316 | Dreiling Limited | | Oil Operator | Jun 1984 |
| 8317 | Dreiling Oil Inc | Hays, KS 67601 | Oil Operator | Jun 2018 |
| 8318 | Dreiling Resourc | | Oil Operator | Oct 1996 |
| 8319 | Dreiling Resources Inc. | Victoria, KS 67671 | Oil Operator | Sep 1997 |
| 8320 | Drennan Oil L.L.C. | Ballinger, TX 76821 | Oil & Gas Operator | May 2026 |
| 8321 | Drennan, D. E. | Graham, TX 76450 | Oil & Gas Operator | Dec 2011 |
| 8322 | Dresser Industrial Park, Inc. | North Tonawanda, NY 14120 | Gas Operator | Dec 2024 |
| 8323 | Drew Cornell, Inc. | | Oil & Gas Operator | Jun 1992 |
| 8324 | Drew Cornell, Inc.-Agent | | Oil & Gas Operator | Sep 1990 |
| 8325 | Drew Cornell,Inc.-C.H.Lawrence | | Oil & Gas Operator | Sep 1990 |
| 8326 | Drew Cornell,Inc.-R Waterbury | | Oil Operator | Jun 1999 |
| 8327 | Dreyer Oil | | Oil Operator | Dec 2019 |
| 8328 | Dreyer Oil - Lel | | Oil Operator | Nov 1993 |
| 8329 | Dreyfus, Louis Natural Gas Corp | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2001 |
| 8330 | DRG Energy Inc. | Norman, OK 73026-3171 | Oil & Gas Operator | Jan 2026 |
| 8331 | DRH Properties LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2014 |
| 8332 | Dri Operating Company | West Chester, PA 19382-0000 | Gas Operator | Dec 2008 |
| 8333 | Driftwood Energy Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Dec 2022 |
| 8334 | Driftwood Oil Co. | Russell, KS 67665 | Oil Operator | Jan 1988 |
| 8335 | Driftwood Oil, LLC | Jal, NM 88252 | Oil & Gas Operator | Feb 2026 |
| 8336 | Drilex Oil & Gas | | Oil Operator | Apr 1987 |
| 8337 | Drill Partners Management, LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2010 |
| 8338 | Driller'S & Prod | | Oil & Gas Operator | Oct 1994 |
| 8339 | Drillers & Producers, Inc. | Newton, KS 67114 | Oil Operator | Dec 2019 |
| 8340 | Drillers Energy Search, Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |
| 8341 | Drillers LLC | Indiana, PA 15701 | Oil & Gas Operator | Dec 2024 |
| 8342 | Drillex Inc | Mentor, OH 44060 | Oil & Gas Operator | Dec 2003 |
| 8343 | Drilling & Production Co. | | Oil & Gas Operator | Feb 2026 |
| 8344 | Drilling Exploration & Operating Co. Inc. | | Oil & Gas Operator | Mar 2026 |
| 8345 | Drilling, Operg & Explor, Inc. | | Oil & Gas Operator | Feb 1990 |
| 8346 | Drillmar Energy, Inc. | Houston, TX 77079 | Oil & Gas Operator | Nov 2014 |
| 8347 | Drillmar Operating Company | Houston, TX 77019 | Oil & Gas Operator | Jun 2013 |
| 8348 | Drillogix Exploration LLC | Breckenridge, TX 76424 | Oil Operator | May 2026 |
| 8349 | Drilmor, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 1998 |
| 8350 | Driltrol | | Oil & Gas Operator | Dec 1984 |
| 8351 | Driscoll Jerry J | | Oil Operator | Apr 1994 |
| 8352 | Driscoll Lease O | | Oil Operator | Jul 1988 |
| 8353 | Driscoll Lease Operations, Inc. | Russell, KS 67665 | Oil Operator | Dec 1998 |
| 8354 | Driscoll S.W.D. Inc. | San Antonio, TX 78229 | Oil & Gas Operator | May 2026 |
| 8355 | Driscoll, Jerry J Oil Investment Inc | Russell, KS 67665 | Oil Operator | Dec 2025 |
| 8356 | Driver Energy Of Texas | Dallas, TX 75379-5951 | Oil & Gas Operator | Apr 2011 |
| 8357 | DRL Operating In | | Oil Operator | Sep 1986 |
| 8358 | Drmas, LLC | | Oil & Gas Operator | Nov 2024 |
| 8359 | Drop Tine Exploration, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Dec 2019 |
| 8360 | DRS Exploration Inc. | San Antonio, TX 78209 | Oil & Gas Operator | May 1999 |
| 8361 | Drum Energy Corp | Hobbs, NM 88241 | Oil & Gas Operator | Mar 1996 |
| 8362 | Drum Energy, L.L.C. | | Gas Operator | Dec 2016 |
| 8363 | Drum Oil & Gas, Inc. | Houston, TX 77082 | Oil & Gas Operator | May 2026 |
| 8364 | Drum, Delton | Liberty, TX 77575 | Oil & Gas Operator | Jul 2005 |
| 8365 | Drummond Upstream LLC | Tulsa, OK 74104 | Oil & Gas Operator | Feb 2026 |
| 8366 | Drummond, F F | | Oil Operator | Jan 2026 |
| 8367 | Drumright Well Service Inc | Oilton, OK 74052 | Oil & Gas Operator | Jan 2026 |
| 8368 | Dry Coulee Oil & Gas Company | Oilmont, MT 59466 | Oil Operator | Oct 2003 |
| 8369 | Dry Creek Disposal Company, Inc. | | Oil & Gas Operator | Nov 2021 |
| 8370 | Dry Creek Operating, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | May 2026 |
| 8371 | Dry Fork Production Co | Wichita Falls, TX 76301 | Oil Operator | Apr 2003 |
| 8372 | Dry Fork Production Co., LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2026 |
| 8373 | Dry Hole Producing LLC | Poland, OH 44514 | Oil & Gas Operator | Dec 2025 |
| 8374 | Dry Hole Producing LP | Poland, OH 44514-3631 | Oil & Gas Operator | Dec 2019 |
| 8375 | Dryes Corner LLC | Oklahoma City, OK 73118 | Oil Operator | Jul 2025 |
| 8376 | DSB Energy, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2026 |
| 8377 | DSM Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | May 1996 |
| 8378 | DSR Oil & Gas, Inc. | Monahans, TX 79756 | Oil & Gas Operator | May 2026 |
| 8379 | DSTJ Corporation | Montgomery, TX 77316 | Oil & Gas Operator | Mar 2001 |
| 8380 | DSW Production Corp. | Houston, TX 77265 | Oil & Gas Operator | May 2026 |
| 8381 | DSX Operating Co. | Amarillo, TX 79105 | Oil & Gas Operator | Mar 2008 |
| 8382 | Dte Gas Resources, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2007 |
| 8383 | Dte Gas Resources, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2014 |
| 8384 | Du Pont Oil Comp | | Oil Operator | May 1984 |
| 8385 | Dual Energy, Inc. | | Oil & Gas Operator | Oct 2022 |
| 8386 | Dual Operating & Production Co | Tulsa, OK 74145-7831 | Oil & Gas Operator | Apr 2020 |
| 8387 | Dual Production Partners, LLC | Nacogdoches, TX 75963 | Oil & Gas Operator | May 2026 |
| 8388 | Dual Quiver Oil & Gas Op, LLC | Flower Mound, TX 75027 | Oil & Gas Operator | May 2026 |
| 8389 | Duane Exploration Limited | Andover, KS 67002 | Oil Operator | Jul 1996 |
| 8390 | Dubach Gas Company | | Oil Operator | May 2003 |
| 8391 | Dubisz, Richard And Deborah | East Aurora, NY 14052 | Gas Operator | Dec 2024 |
| 8392 | Dublin Petroleum Corporation | Enid, OK 73702-6029 | Oil & Gas Operator | Feb 2026 |
| 8393 | Dubois, Allen | Whitewater, KS 67154 | Oil Operator | May 2000 |
| 8394 | Ducharme Oil, LLC | | Oil & Gas Operator | Jan 2025 |
| 8395 | Duck Bros Dozer & Trucking Inc | Konawa, OK 74849 | Oil & Gas Operator | Feb 2026 |
| 8396 | Duck Creek Energy Inc | Brecksville, OH 44141 | Oil & Gas Operator | Dec 2025 |
| 8397 | Duck Creek Petroleum LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2012 |
| 8398 | Duck Oil Company LLC | Konawa, OK 74849 | Oil Operator | Feb 2026 |
| 8399 | Ducky Oil Corporation | Fort Worth, TX 76120 | Oil & Gas Operator | May 2026 |
| 8400 | Duco Energy LLC | Tulsa, OK 74145-4514 | Oil & Gas Operator | Mar 2015 |