| 31301 | W. W. Melton | | Oil Operator | Sep 1983 |
| 31302 | W.A. Oil Co. | Andrews, TX 79714 | Oil & Gas Operator | Aug 1997 |
| 31303 | W.B.D. Oil And Gas Inc. | Pampa, TX 79066 | Oil & Gas Operator | Oct 2019 |
| 31304 | W.D. Oil Company | Pampa, TX 79066 | Oil & Gas Operator | Oct 2001 |
| 31305 | W.D. Short Oil Co., LLC | Oxford, KS 67119 | Oil & Gas Operator | Jun 2025 |
| 31306 | W.E.S. Operating Company, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Nov 2011 |
| 31307 | W.H.D., Inc. | Euless, TX 76039 | Oil & Gas Operator | Aug 1998 |
| 31308 | W.I. Royalty, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Nov 2009 |
| 31309 | W.I.F.T. Operating, LLC | | Oil & Gas Operator | Oct 2025 |
| 31310 | W.J., Inc. | Ellis, KS 67637 | Oil Operator | Jan 2001 |
| 31311 | W.L. Ranch Inc. | Caldwell, TX 77836 | Oil & Gas Operator | Dec 2025 |
| 31312 | W.O.G., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 31313 | W.P. Moore, Inc. | | Oil Operator | Dec 1983 |
| 31314 | W.P.P.I. Inc. | Westbrook, TX 79565 | Oil & Gas Operator | Jul 2013 |
| 31315 | W.R. Guffey LLC | Dallas, TX 75206 | Oil & Gas Operator | Jul 2020 |
| 31316 | W.R.A. Oil Co. | | Oil & Gas Operator | Mar 2025 |
| 31317 | W.S. Red Hancock, Inc. | | Oil Operator | Dec 1986 |
| 31318 | W.T. Waggoner Estate, Inc. | Vernon, TX 76385 | Oil Operator | Dec 2025 |
| 31319 | W.W. Energy | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 31320 | W.W.R. Holding, LLC | Coleman, TX 76834 | Oil & Gas Operator | Mar 2008 |
| 31321 | W4 Energy, LLC | Humboldt, KS 66748 | Gas Operator | Nov 2015 |
| 31322 | Wabash Energy Corporation | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2009 |
| 31323 | Wabash Production And Development, Inc. | Fairfield, IL 62837 | Gas Operator | Apr 2002 |
| 31324 | Wachob Jack | Sapulpa, OK 74066 | Oil Operator | Dec 2014 |
| 31325 | Wachob Oil & Gas LLC | Sapulpa, OK 74066-6987 | Oil Operator | Jun 2015 |
| 31326 | Wachtman-Schroed | | Oil Operator | Aug 1986 |
| 31327 | Wachtman-Schroeder, A General Partnership | Pawhuska, OK 74056 | Oil Operator | Jun 2025 |
| 31328 | Wacker Oil Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 31329 | Waco Corp | | Oil Operator | Jun 1983 |
| 31330 | Waco Oil | | Oil Operator | Apr 1992 |
| 31331 | Waco Oil & Gas Co., Inc. | Glenville, WV 26351-0397 | Oil & Gas Operator | Dec 2021 |
| 31332 | Waco Petro, LP | Sulphur SPGS, TX 75483 | Oil Operator | Sep 2015 |
| 31333 | Waco Production Co. | Archer City, TX 76351 | Oil & Gas Operator | Sep 1993 |
| 31334 | Waddell Norman | Seminole, OK 74868-1244 | Oil & Gas Operator | Nov 1998 |
| 31335 | Waddell, Debora | Angola, NY 14059 | Gas Operator | Dec 2024 |
| 31336 | Waddell, Eric F. | Natoma, KS 67651 | Oil Operator | Aug 1995 |
| 31337 | Waddell, Kent | Abilene, TX 79606 | Oil & Gas Operator | Nov 2010 |
| 31338 | Waddy & Son Oilfield Services Inc | Dellroy, OH 44620-9762 | Oil & Gas Operator | Dec 2024 |
| 31339 | Wade Energy Corporation | Carlsbad, NM 88220 | Oil & Gas Operator | Sep 1999 |
| 31340 | Wade Operating | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 31341 | Wade, Jim | Olney, TX 76374 | Oil & Gas Operator | Dec 2025 |
| 31342 | Wadi Exploration&Production,LLC | San Clemente, CA 92672 | Oil & Gas Operator | Jul 2020 |
| 31343 | Wadi Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Dec 2025 |
| 31344 | Wadi Petroleum Inc | Houston, TX 77014 | Oil & Gas Operator | May 2018 |
| 31345 | Wadkins T Roy | Bartlesville, OK 74006 | Oil & Gas Operator | Nov 2019 |
| 31346 | Wadley Bill & Son Drilling Co | Okmulgee, OK 74447 | Oil & Gas Operator | Sep 2025 |
| 31347 | Waelder Oil & Gas, Inc. | Fort Smith, AR 72903 | Oil & Gas Operator | Sep 2025 |
| 31348 | Waffenbauch USA Corp. | Westfield, NY 14787 | Gas Operator | Dec 2024 |
| 31349 | Waggner, Fred | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 31350 | Waggner, Robert | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2006 |
| 31351 | Waggoner Drilling Company | Bristow, OK 74010-0663 | Oil & Gas Operator | Jan 2014 |
| 31352 | Waggoner Oil & Gas Corp | Enid, OK 73703-1152 | Oil & Gas Operator | Oct 2025 |
| 31353 | Waggoner Operating, L.L.C. | Vernon, TX 76385 | Oil Operator | Dec 2025 |
| 31354 | Waggoner, John S. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2017 |
| 31355 | Waggoner, Ralph E. | Windthorst, TX 76389 | Oil & Gas Operator | Dec 2010 |
| 31356 | Waggoner, W. T., Estate | Vernon, TX 76385 | Oil & Gas Operator | Feb 2018 |
| 31357 | Waggoner-Baldridge Energy | | Oil Operator | Jun 1988 |
| 31358 | Waggoner-Baldridge Oper. Co, Inc | Dallas, TX 75206 | Oil & Gas Operator | Jan 1998 |
| 31359 | Wagman Petroleum, Inc. | Dallas, TX 75202 | Oil & Gas Operator | Dec 2025 |
| 31360 | Wagman, Brent A. | Dallas, TX 75202 | Oil & Gas Operator | Dec 2025 |
| 31361 | Wagner & Brown | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 31362 | Wagner & Brown Limited Partnership | Midland, TX 79701 | Oil & Gas Operator | Feb 2013 |
| 31363 | Wagner & Brown LP | Midland, TX 79702-1714 | Oil & Gas Operator | Aug 2022 |
| 31364 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 31365 | Wagner & Wagner | Indiana, PA 15701-1273 | Gas Operator | Dec 2012 |
| 31366 | Wagner And Brown LTD Dba Wagner And Brown LTD | | Oil & Gas Operator | Sep 2002 |
| 31367 | Wagner Energy LLC | Enid, OK 73701 | Oil Operator | Aug 2025 |
| 31368 | Wagner Gas And Oil LLC | | Oil Operator | Nov 2025 |
| 31369 | Wagner Oil And Gas | | Oil & Gas Operator | Dec 2016 |
| 31370 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 31371 | Wagner, Duer & Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 1999 |
| 31372 | Wagon Wheel Arklatex, LLC | | Oil & Gas Operator | May 2018 |
| 31373 | Wagon Wheel Production Company | Crawford, OK 73638-9502 | Oil & Gas Operator | Mar 2025 |
| 31374 | Wagoner, Walter M | | Oil Operator | Aug 2025 |
| 31375 | Wainoco Oil & Ga | | Oil & Gas Operator | Jan 1993 |
| 31376 | Wainoco Oil & Gas Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2005 |
| 31377 | Wakefield Oil Company, Inc. | Winfield, KS 67156 | Oil Operator | Aug 1999 |
| 31378 | Wako Oil Co. LLC | Graham, TX 76450 | Oil Operator | Dec 2025 |
| 31379 | Walbet | Monahans, TX 79756 | Oil & Gas Operator | Dec 1993 |
| 31380 | Walbet, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Dec 2025 |
| 31381 | Walcher Oil, LC | Bellevue, WA 98009 | Oil & Gas Operator | Jun 2025 |
| 31382 | Walcher, Wayne E. | Wichita, KS 67202 | Oil & Gas Operator | May 2024 |
| 31383 | Walden E F | Ada, OK 74820 | Oil & Gas Operator | Aug 2014 |
| 31384 | Waldron David A | Wooster, OH 44691 | Oil & Gas Operator | Dec 2003 |
| 31385 | Waldrop, L. E. | Houston, TX 77024 | Oil & Gas Operator | Jun 1996 |
| 31386 | Walgann Oil & Gas Inc | Sperry, OK 74073 | Oil Operator | Aug 2025 |
| 31387 | Walkabout Operating, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Dec 2025 |
| 31388 | Walker Billy R | Henryetta, OK 74437-0026 | Oil & Gas Operator | Sep 2014 |
| 31389 | Walker Corporation (The) | Oklahoma City, OK 73156 | Oil & Gas Operator | May 2006 |
| 31390 | Walker David Wayne | Okemah, OK 74859-9731 | Oil & Gas Operator | Sep 2022 |
| 31391 | Walker Energy Group | Houston, TX 77215-1089 | Oil & Gas Operator | Jun 1992 |
| 31392 | Walker Energy, LLC | | Oil & Gas Operator | Nov 2024 |
| 31393 | Walker Ervin G | | Oil Operator | Jul 1992 |
| 31394 | Walker Explor & Prod Corp | Unknown, UT 99999 | Oil & Gas Operator | Dec 1989 |
| 31395 | Walker Gas Company | Romney, WV 25757-0000 | Oil & Gas Operator | Dec 2018 |
| 31396 | Walker Jeffery Scott | Owasso, OK 74055-7420 | Oil Operator | Sep 2025 |
| 31397 | Walker Keith F | Ardmore, OK 73401 | Oil & Gas Operator | Jan 2019 |
| 31398 | Walker L Willis | | Oil Operator | Dec 1985 |
| 31399 | Walker La. Properties | | Oil & Gas Operator | Oct 1990 |
| 31400 | Walker Management Company | | Oil & Gas Operator | Apr 1988 |