| 30501 | W. B. Inabnet | | Gas Operator | Oct 1985 |
| 30502 | W. B. Jayred | | Oil & Gas Operator | Aug 1982 |
| 30503 | W. B. McCarter, Jr., Inc. | | Oil & Gas Operator | Dec 1995 |
| 30504 | W. C. Allen | | Oil & Gas Operator | Dec 2024 |
| 30505 | W. C. Emmons | | Oil Operator | Jan 2025 |
| 30506 | W. D. Henry & Sons, Inc. | Eden, NY 14057 | Gas Operator | Dec 2025 |
| 30507 | W. D. Roberson | | Gas Operator | Mar 2021 |
| 30508 | W. D. Short Oil Co. | | Oil Operator | Apr 2004 |
| 30509 | W. D. Tarver | | Oil Operator | Aug 2005 |
| 30510 | W. E. B. Well Tending Service, Inc. | Vienna, WV 26105 | Oil & Gas Operator | Nov 2011 |
| 30511 | W. E. O'Malley Inc. | | Oil & Gas Operator | Jun 1991 |
| 30512 | W. E. Orr | | Oil & Gas Operator | Dec 2024 |
| 30513 | W. G. Darsey, III | | Oil & Gas Operator | Nov 1981 |
| 30514 | W. H. Beene | | Oil & Gas Operator | Jan 2025 |
| 30515 | W. H. Hunt | | Oil & Gas Operator | Jan 1984 |
| 30516 | W. H. Hunt Trust Estate | | Oil & Gas Operator | Mar 1997 |
| 30517 | W. H. Hunt, Et Al | | Oil & Gas Operator | Jul 1990 |
| 30518 | W. Harlan Beene | | Oil Operator | Jan 2025 |
| 30519 | W. Harlan Beene Et Al | | Oil Operator | Dec 2002 |
| 30520 | W. J. Hamilton Operator | | Oil Operator | Aug 1978 |
| 30521 | W. J. Wegman, Jr. | | Gas Operator | Dec 1991 |
| 30522 | W. L. Estis | | Oil & Gas Operator | Dec 1999 |
| 30523 | W. L. Puls & T. D. Rush | | Oil & Gas Operator | Dec 1980 |
| 30524 | W. L. Rambo | | Oil Operator | Apr 1981 |
| 30525 | W. L. Rambo, Inc. | | Oil & Gas Operator | Aug 1985 |
| 30526 | W. M. Elliott Jr. | | Oil & Gas Operator | Dec 2009 |
| 30527 | W. M. Inabnet Agent | | Gas Operator | Oct 1985 |
| 30528 | W. M. Morgan | | Oil Operator | Jan 1985 |
| 30529 | W. R. Dudley | | Oil & Gas Operator | Dec 2025 |
| 30530 | W. R. G. Oil & Gas, Inc. | Arlington, TX 76013 | Oil & Gas Operator | Dec 1993 |
| 30531 | W. R. Jennings, Jr. | | Oil Operator | Aug 2003 |
| 30532 | W. R. Williams, Inc. | Amarillo, TX 79105 | Gas Operator | Dec 2019 |
| 30533 | W. S. Hale Petroleum | | Oil & Gas Operator | Jul 2015 |
| 30534 | W. S. Hale Petroleum, L.L.C. | | Oil & Gas Operator | Jan 2025 |
| 30535 | W. T. Boyle & Co. | Graham, TX 76450 | Oil Operator | Mar 2008 |
| 30536 | W. T. Waggoner Estate | | Oil & Gas Operator | Dec 1995 |
| 30537 | W. Trich & Hallwell, Inc. | | Oil & Gas Operator | Oct 1988 |
| 30538 | W. W. F. Oil Corporation | | Oil & Gas Operator | Dec 1999 |
| 30539 | W. W. Melton | | Oil Operator | Sep 1983 |
| 30540 | W.A. Oil Co. | Andrews, TX 79714 | Oil & Gas Operator | Aug 1997 |
| 30541 | W.B.D. Oil And Gas Inc. | Pampa, TX 79066 | Oil & Gas Operator | Oct 2019 |
| 30542 | W.D. Oil Company | Pampa, TX 79066 | Oil & Gas Operator | Oct 2001 |
| 30543 | W.D. Short Oil Co., LLC | Oxford, KS 67119 | Oil & Gas Operator | Apr 2026 |
| 30544 | W.E.S. Operating Company, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Nov 2011 |
| 30545 | W.H.D., Inc. | Euless, TX 76039 | Oil & Gas Operator | Aug 1998 |
| 30546 | W.I. Royalty, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Nov 2009 |
| 30547 | W.I.F.T. Operating, LLC | | Oil & Gas Operator | Jun 2026 |
| 30548 | W.J., Inc. | Ellis, KS 67637 | Oil Operator | Jan 2001 |
| 30549 | W.L. Ranch Inc. | Caldwell, TX 77836 | Oil & Gas Operator | Sep 2026 |
| 30550 | W.O.G., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 30551 | W.P. Moore, Inc. | | Oil Operator | Dec 1983 |
| 30552 | W.P.P.I. Inc. | Westbrook, TX 79565 | Oil & Gas Operator | Jul 2013 |
| 30553 | W.R. Guffey LLC | Dallas, TX 75206 | Oil & Gas Operator | Jul 2020 |
| 30554 | W.R.A. Oil Co. | | Oil & Gas Operator | Mar 2025 |
| 30555 | W.S. Red Hancock, Inc. | | Oil Operator | Dec 1986 |
| 30556 | W.T. Waggoner Estate, Inc. | Vernon, TX 76385 | Oil Operator | Sep 2026 |
| 30557 | W.W. Energy | Luling, TX 78648 | Oil & Gas Operator | Sep 2026 |
| 30558 | W.W.R. Holding, LLC | Coleman, TX 76834 | Oil & Gas Operator | Mar 2008 |
| 30559 | W4 Energy, LLC | Humboldt, KS 66748 | Gas Operator | Nov 2015 |
| 30560 | Wabash Energy Corporation | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2009 |
| 30561 | Wachob Jack | Sapulpa, OK 74066 | Oil Operator | Dec 2014 |
| 30562 | Wachob Oil & Gas LLC | Sapulpa, OK 74066-6987 | Oil Operator | Jun 2015 |
| 30563 | Wachtman-Schroed | | Oil Operator | Aug 1986 |
| 30564 | Wachtman-Schroeder, A General Partnership | Pawhuska, OK 74056 | Oil Operator | Apr 2026 |
| 30565 | Wacker Oil Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 30566 | Waco Corp | | Oil Operator | Jun 1983 |
| 30567 | Waco Oil | | Oil Operator | Apr 1992 |
| 30568 | Waco Oil & Gas Co., Inc. | Glenville, WV 263510397 | Oil & Gas Operator | Dec 2021 |
| 30569 | Waco Petro, LP | Sulphur SPGS, TX 75483 | Oil Operator | Sep 2015 |
| 30570 | Waco Production Co. | Archer City, TX 76351 | Oil & Gas Operator | Sep 1993 |
| 30571 | Waddell Norman | Seminole, OK 74868-1244 | Oil & Gas Operator | Nov 1998 |
| 30572 | Waddell, Eric F. | Natoma, KS 67651 | Oil Operator | Aug 1995 |
| 30573 | Waddell, Kent | Abilene, TX 79606 | Oil & Gas Operator | Nov 2010 |
| 30574 | Waddy & Son Oilfield Services Inc | Dellroy, OH 44620-9762 | Oil & Gas Operator | Dec 2025 |
| 30575 | Wade Energy Corporation | Carlsbad, NM 88220 | Oil & Gas Operator | Sep 1999 |
| 30576 | Wade Operating | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 30577 | Wade, Jim | Olney, TX 76374 | Oil & Gas Operator | Sep 2026 |
| 30578 | Wadi Exploration&Production,LLC | San Clemente, CA 92672 | Oil & Gas Operator | Jul 2020 |
| 30579 | Wadi Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Sep 2026 |
| 30580 | Wadi Petroleum Inc | Houston, TX 77014 | Oil & Gas Operator | May 2018 |
| 30581 | Wadkins T Roy | Bartlesville, OK 74006 | Oil & Gas Operator | Nov 2019 |
| 30582 | Wadley Bill & Son Drilling Co | Okmulgee, OK 74447 | Oil & Gas Operator | May 2026 |
| 30583 | Waelder Oil & Gas, Inc. | Fort Smith, AR 72903 | Oil & Gas Operator | May 2026 |
| 30584 | Waffenbauch USA Corp. | Westfield, NY 14787 | Gas Operator | Dec 2025 |
| 30585 | Waggner, Fred | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2026 |
| 30586 | Waggner, Robert | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2006 |
| 30587 | Waggoner Drilling Company | Bristow, OK 74010-0663 | Oil & Gas Operator | Jan 2014 |
| 30588 | Waggoner Oil & Gas Corp | Enid, OK 73703-1152 | Oil & Gas Operator | Jun 2026 |
| 30589 | Waggoner Operating, L.L.C. | Vernon, TX 76385 | Oil Operator | Sep 2026 |
| 30590 | Waggoner, John S. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2017 |
| 30591 | Waggoner, Ralph E. | Windthorst, TX 76389 | Oil & Gas Operator | Dec 2010 |
| 30592 | Waggoner, W. T., Estate | Vernon, TX 76385 | Oil & Gas Operator | Feb 2018 |
| 30593 | Waggoner-Baldridge Energy | | Oil Operator | Jun 1988 |
| 30594 | Waggoner-Baldridge Oper. Co, Inc | Dallas, TX 75206 | Oil & Gas Operator | Jan 1998 |
| 30595 | Wagman Petroleum, Inc. | Dallas, TX 75202 | Oil & Gas Operator | Sep 2026 |
| 30596 | Wagman, Brent A. | Dallas, TX 75202 | Oil & Gas Operator | Sep 2026 |
| 30597 | Wagner & Brown | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 30598 | Wagner & Brown Limited Partnership | Midland, TX 79701 | Oil & Gas Operator | Feb 2013 |
| 30599 | Wagner & Brown LP | Midland, TX 79702-1714 | Oil & Gas Operator | Aug 2022 |
| 30600 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |