| 8501 | Doyle Hartman | Midland, TX 79702 | Oil & Gas Operator | Nov 2005 |
| 8502 | DP Permian Operator, LLC | Houston, TX 77024 | Oil & Gas Operator | Aug 2024 |
| 8503 | DP Well Works I, LLC | Salt Lake Cty, UT 84103 | Oil & Gas Operator | Dec 2025 |
| 8504 | DP2, LLC | Southlake, TX 76092 | Oil & Gas Operator | Dec 2025 |
| 8505 | DPMP Energy LLC | Prosper, TX 75078 | Oil & Gas Operator | Dec 2023 |
| 8506 | DR Well Operator | | Oil Operator | Jan 1990 |
| 8507 | DR. Richard C. Baker | | Oil & Gas Operator | Sep 2009 |
| 8508 | Drachen Energy Co. | San Antonio, TX 78258 | Oil Operator | Dec 2025 |
| 8509 | Drachen Oil Company | San Antonio, TX 78258 | Oil & Gas Operator | Dec 2025 |
| 8510 | Draco Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 8511 | Draco Production Company | Tulsa, OK 74133 | Oil & Gas Operator | Jul 2012 |
| 8512 | Dragon Energy Corporation | | Oil & Gas Operator | Oct 2006 |
| 8513 | Dragon Energy LLC | Tulsa, OK 74135-7234 | Oil & Gas Operator | Feb 2015 |
| 8514 | Dragon Operating, LLC | Tulsa, OK 74137 | Oil Operator | Dec 2025 |
| 8515 | Dragoon Oil & Gas Co. | Fort Worth, TX 76147 | Oil & Gas Operator | May 2015 |
| 8516 | Drain Oil Co. | Fritch, TX 79036 | Oil & Gas Operator | Jul 2009 |
| 8517 | Drain Oil Co. LLC | Fritch, TX 79036 | Oil & Gas Operator | Dec 2025 |
| 8518 | Drake Denver | Shinglehouse, PA 16748-5517 | Oil & Gas Operator | Dec 2024 |
| 8519 | Drake Energy Corporation | | Gas Operator | Dec 2024 |
| 8520 | Drake Exploration Inc | Tulsa, OK 74105-4250 | Oil & Gas Operator | Oct 2025 |
| 8521 | Drake Exploration LLC | Arkansas City, KS 67005 | Oil & Gas Operator | Aug 2025 |
| 8522 | Drake Oil & Gas, LLC | Wichita Falls, TX 76308 | Oil Operator | Dec 2025 |
| 8523 | Drake Petroleum, LLC | Cypress, TX 77429 | Oil & Gas Operator | Jun 2023 |
| 8524 | Drake, Stuart | | Oil Operator | Dec 2013 |
| 8525 | Draw Oil & Gas Inc | | Oil & Gas Operator | Jun 1995 |
| 8526 | Drawings, LLC | Albuquerque, NM 87109 | Oil Operator | Aug 2025 |
| 8527 | DRD Operating Company | | Oil & Gas Operator | Feb 2014 |
| 8528 | Dreher, George R. | Midland, TX 79702 | Oil & Gas Operator | Jan 2018 |
| 8529 | Dreiling Exploration LLC | Victoria, KS 67671 | Oil Operator | Mar 2018 |
| 8530 | Dreiling Limited | | Oil Operator | Jun 1984 |
| 8531 | Dreiling Oil Inc | Hays, KS 67601 | Oil Operator | Jun 2018 |
| 8532 | Dreiling Resourc | | Oil Operator | Oct 1996 |
| 8533 | Dreiling Resources Inc. | Victoria, KS 67671 | Oil Operator | Sep 1997 |
| 8534 | Drennan Oil L.L.C. | Ballinger, TX 76821 | Oil & Gas Operator | Dec 2025 |
| 8535 | Drennan, D. E. | Graham, TX 76450 | Oil & Gas Operator | Dec 2011 |
| 8536 | Dresser Industrial Park, Inc. | North Tonawanda, NY 14120 | Gas Operator | Dec 2024 |
| 8537 | Drew Cornell, Inc. | | Oil & Gas Operator | Jun 1992 |
| 8538 | Drew Cornell, Inc.-Agent | | Oil & Gas Operator | Sep 1990 |
| 8539 | Drew Cornell,Inc.-C.H.Lawrence | | Oil & Gas Operator | Sep 1990 |
| 8540 | Drew Cornell,Inc.-R Waterbury | | Oil Operator | Jun 1999 |
| 8541 | Dreyer Oil | | Oil Operator | Dec 2019 |
| 8542 | Dreyer Oil - Lel | | Oil Operator | Nov 1993 |
| 8543 | Dreyfus, Louis Natural Gas Corp | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2001 |
| 8544 | DRG Energy Inc. | Norman, OK 73026-3171 | Oil & Gas Operator | Sep 2025 |
| 8545 | DRH Properties LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2014 |
| 8546 | Dri Operating Company | West Chester, PA 19382-0000 | Gas Operator | Dec 2008 |
| 8547 | Driftwood Energy Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Dec 2022 |
| 8548 | Driftwood Oil Co. | Russell, KS 67665 | Oil Operator | Jan 1988 |
| 8549 | Driftwood Oil, LLC | Jal, NM 88252 | Oil & Gas Operator | Oct 2025 |
| 8550 | Drilex Oil & Gas | | Oil Operator | Apr 1987 |
| 8551 | Drill Partners Management, LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2010 |
| 8552 | Driller'S & Prod | | Oil & Gas Operator | Oct 1994 |
| 8553 | Drillers & Producers, Inc. | Newton, KS 67114 | Oil Operator | Dec 2019 |
| 8554 | Drillers Energy Search, Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |
| 8555 | Drillers LLC | Indiana, PA 15701 | Oil & Gas Operator | Dec 2024 |
| 8556 | Drillex Inc | Mentor, OH 44060 | Oil & Gas Operator | Dec 2003 |
| 8557 | Drilling & Production Co. | | Oil & Gas Operator | Oct 2025 |
| 8558 | Drilling Exploration & Operating Co. Inc. | | Oil & Gas Operator | Oct 2025 |
| 8559 | Drilling, Operg & Explor, Inc. | | Oil & Gas Operator | Feb 1990 |
| 8560 | Drillmar Energy, Inc. | Houston, TX 77079 | Oil & Gas Operator | Nov 2014 |
| 8561 | Drillmar Operating Company | Houston, TX 77019 | Oil & Gas Operator | Jun 2013 |
| 8562 | Drillogix Exploration LLC | Breckenridge, TX 76424 | Oil Operator | Dec 2025 |
| 8563 | Drilmor, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 1998 |
| 8564 | Driltrol | | Oil & Gas Operator | Dec 1984 |
| 8565 | Driscoll Jerry J | | Oil Operator | Apr 1994 |
| 8566 | Driscoll Lease O | | Oil Operator | Jul 1988 |
| 8567 | Driscoll Lease Operations, Inc. | Russell, KS 67665 | Oil Operator | Dec 1998 |
| 8568 | Driscoll S.W.D. Inc. | San Antonio, TX 78229 | Oil & Gas Operator | Dec 2025 |
| 8569 | Driscoll, Jerry J Oil Investment Inc | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 8570 | Driver Energy Of Texas | Dallas, TX 75379-5951 | Oil & Gas Operator | Apr 2011 |
| 8571 | DRL Operating In | | Oil Operator | Sep 1986 |
| 8572 | Drmas, LLC | | Oil & Gas Operator | Nov 2024 |
| 8573 | Drop Tine Exploration, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Dec 2019 |
| 8574 | DRS Exploration Inc. | San Antonio, TX 78209 | Oil & Gas Operator | May 1999 |
| 8575 | Drum Energy Corp | Hobbs, NM 88241 | Oil & Gas Operator | Mar 1996 |
| 8576 | Drum Energy, L.L.C. | | Gas Operator | Dec 2016 |
| 8577 | Drum Oil & Gas, Inc. | Houston, TX 77082 | Oil & Gas Operator | Dec 2025 |
| 8578 | Drum, Delton | Liberty, TX 77575 | Oil & Gas Operator | Jul 2005 |
| 8579 | Drummond, F F | | Oil Operator | Sep 2025 |
| 8580 | Drumright Well Service Inc | Oilton, OK 74052 | Oil & Gas Operator | Oct 2025 |
| 8581 | Dry Coulee Oil & Gas Company | Oilmont, MT 59466 | Oil Operator | Oct 2003 |
| 8582 | Dry Creek Disposal Company, Inc. | | Oil & Gas Operator | Nov 2021 |
| 8583 | Dry Creek Operating, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Dec 2025 |
| 8584 | Dry Fork Production Co | Wichita Falls, TX 76301 | Oil Operator | Apr 2003 |
| 8585 | Dry Fork Production Co., LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 8586 | Dry Hole Producing LLC | Poland, OH 44514 | Oil & Gas Operator | Dec 2024 |
| 8587 | Dry Hole Producing LP | Poland, OH 44514-3631 | Oil & Gas Operator | Dec 2019 |
| 8588 | Dryes Corner LLC | Oklahoma City, OK 73118 | Oil Operator | Jul 2025 |
| 8589 | DSB Energy, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2025 |
| 8590 | DSM Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | May 1996 |
| 8591 | DSR Oil & Gas, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Dec 2025 |
| 8592 | DSTJ Corporation | Montgomery, TX 77316 | Oil & Gas Operator | Mar 2001 |
| 8593 | DSW Production Corp. | Houston, TX 77265 | Oil & Gas Operator | Dec 2025 |
| 8594 | DSX Operating Co. | Amarillo, TX 79105 | Oil & Gas Operator | Mar 2008 |
| 8595 | Dte Gas Resources, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2007 |
| 8596 | Dte Gas Resources, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2014 |
| 8597 | Du Pont Oil Comp | | Oil Operator | May 1984 |
| 8598 | Dual Energy, Inc. | | Oil & Gas Operator | Oct 2022 |
| 8599 | Dual Operating & Production Co | Tulsa, OK 74145-7831 | Oil & Gas Operator | Apr 2020 |
| 8600 | Dual Production Partners, LLC | Nacogdoches, TX 75963 | Oil & Gas Operator | Dec 2025 |