| 12401 | Wolfcamp Energy, LLC | Midland, TX 79702 | Gas Operator | Apr 2025 |
| 12402 | Wolfcamp Oil & Gas, Inc. | Odessa, TX 79764 | Oil & Gas Operator | Dec 2004 |
| 12403 | Wolfe Oil Company | Stockdale, TX 78160 | Oil Operator | Apr 2025 |
| 12404 | Wolfson Oil Co. | Dallas, TX 75230 | Oil & Gas Operator | Sep 1999 |
| 12405 | Wolfson, I. J. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2002 |
| 12406 | Wolsey Oil Inc. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 12407 | Wolsey Well Service, Inc. | Windthorst, TX 76389 | Oil & Gas Operator | Jul 2006 |
| 12408 | Wolsey Well Service, L.P. | Bowie, TX 76230 | Oil & Gas Operator | Jun 2014 |
| 12409 | Wolverine Exploration Company | Houston, TX 77002 | Oil & Gas Operator | May 2019 |
| 12410 | Womack Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2024 |
| 12411 | Womack Operating, LLC. | Houston, TX 77057 | Oil & Gas Operator | Apr 2025 |
| 12412 | Wood Energy Corporation | Baytown, TX 77520 | Oil & Gas Operator | Jun 1999 |
| 12413 | Wood Hi Co., Inc. | Victoria, TX 77902 | Oil & Gas Operator | Dec 2004 |
| 12414 | Wood Oil Company | Tulsa, OK 74103 | Gas Operator | Oct 1997 |
| 12415 | Wood, C.W. | Calliham, TX 78007 | Oil & Gas Operator | Sep 2023 |
| 12416 | Wood, McShane & Thams | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 12417 | Woodard Energy Company | Houston, TX 77042 | Oil & Gas Operator | Mar 2010 |
| 12418 | Woodbine Acquisition LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2014 |
| 12419 | Woodbine Petroleum, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Aug 2003 |
| 12420 | Woodbine Production Corporation | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 12421 | Woodlands Oil And Gas Inc. | The Woodlands, TX 77380 | Gas Operator | Jan 2014 |
| 12422 | Woods Oil Co. | Burkburnett, TX 76354 | Oil & Gas Operator | Apr 2025 |
| 12423 | Woods Operating Co., Inc. | Shreveport, LA 71136 | Oil & Gas Operator | Dec 2020 |
| 12424 | Woods, Herbert S. & Assoc. | El Dorado, AR 71730 | Gas Operator | Feb 2023 |
| 12425 | Woods, W.A. Oil Co. | Holliday, TX 76366 | Oil & Gas Operator | Dec 1993 |
| 12426 | Woodygreen Resources, LLC | Plano, TX 75093 | Oil & Gas Operator | Apr 2025 |
| 12427 | Woodygreen Resources, LP | Abilene, TX 79608 | Oil & Gas Operator | Mar 2012 |
| 12428 | Wooley Petroleum | Alvord, TX 76225 | Oil & Gas Operator | Oct 1994 |
| 12429 | Woolley, Gary W. | Spearman, TX 79081 | Gas Operator | Apr 2025 |
| 12430 | World Energy Corporation | Laredo, TX 78041 | Oil & Gas Operator | Aug 2003 |
| 12431 | World Hydrocarbon, Inc. | Kaufman, TX 75142 | Gas Operator | Apr 1995 |
| 12432 | World Producers, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1994 |
| 12433 | Worldwide Energy Corp. | Freer, TX 78357 | Oil & Gas Operator | Jan 1997 |
| 12434 | Worldwide Exploration, Inc | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2002 |
| 12435 | Worsham-Steed Gas Storage, L.P. | Houston, TX 77002 | Oil & Gas Operator | Aug 2010 |
| 12436 | Worsham-Steed Gas Storage, LLC | Tulsa, OK 74172 | Oil & Gas Operator | Apr 2025 |
| 12437 | Wortham Oil & Gas | Conroe, TX 77301 | Oil & Gas Operator | Apr 2025 |
| 12438 | Wortham Operating, LLC | Holliday, TX 76366 | Oil & Gas Operator | Apr 2023 |
| 12439 | Wortham, E. H. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 12440 | Wortham, J. R. | Wichita Falls, TX 76310 | Oil & Gas Operator | Aug 2023 |
| 12441 | Wortham, Michael R. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 12442 | WP Oil & Gas Exploration LLC | Loving, TX 76460 | Oil Operator | Apr 2025 |
| 12443 | WPH Operating Company | Amarillo, TX 79105 | Oil & Gas Operator | Mar 2017 |
| 12444 | WPX Energy Gulf Coast, LP | Benbrook, TX 76126 | Oil & Gas Operator | May 2012 |
| 12445 | WPX Energy Permian, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2025 |
| 12446 | WR Resources, LLC | Jourdanton, TX 78026 | Oil & Gas Operator | Apr 2025 |
| 12447 | Wrath Energy, LLC | Odessa, TX 79760 | Oil Operator | Apr 2025 |
| 12448 | WRD Oil, LLC | Floresville, TX 78114 | Oil & Gas Operator | Apr 2025 |
| 12449 | WRD Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2025 |
| 12450 | Wright Aurora Enterprises, LLC | Canyon Lake, TX 78133 | Oil & Gas Operator | May 2020 |
| 12451 | Wright Brothers Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Apr 2025 |
| 12452 | Wright Brothers Petroleum, LTD. | San Antonio, TX 78212 | Oil & Gas Operator | May 2002 |
| 12453 | Wright Oil And Gas, LLC | Benbrook, TX 76126 | Oil & Gas Operator | Apr 2025 |
| 12454 | Wright Operating, Inc. | Denison, TX 75020 | Oil & Gas Operator | Apr 2025 |
| 12455 | Wright Trucking, Inc. | Weatherford, OK 73096 | Oil & Gas Operator | Feb 2019 |
| 12456 | Wright, Robert W. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 12457 | Wright, Robert W. Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 12458 | WRT Energy Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | May 1998 |
| 12459 | WS Ritter Critters, LLC | Groom, TX 79039 | Gas Operator | Apr 2025 |
| 12460 | WSF, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2013 |
| 12461 | WSM | New Braunfels, TX 78132 | Oil Operator | Apr 2025 |
| 12462 | WSM LLC | New Braunfels, TX 78132 | Oil Operator | Apr 2025 |
| 12463 | WT Fitts Operating | Bowie, TX 76230 | Oil & Gas Operator | Apr 2025 |
| 12464 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | Apr 2025 |
| 12465 | WTG Exploration Inc | Midland, TX 79705 | Oil & Gas Operator | Dec 2023 |
| 12466 | WTP Energy, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Apr 2025 |
| 12467 | WTR Operating LLC | Troup, TX 75789 | Oil & Gas Operator | Apr 2025 |
| 12468 | WTXR Operating (Texas), Inc. | Carrollton, TX 75007 | Oil Operator | Apr 2025 |
| 12469 | WVH Operating LLC | Aledo, TX 76008 | Oil Operator | Apr 2025 |
| 12470 | Wy Woodland Operating, LLC | Covington, TX 76636 | Oil & Gas Operator | Apr 2025 |
| 12471 | Wyatt Permian, LLC | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Apr 2025 |
| 12472 | Wyco Oil & Gas LLC | Odessa, TX 79766 | Oil & Gas Operator | Jan 2024 |
| 12473 | Wylie Bros. Prod. & DRGL. Co,Inc | Baird, TX 79504 | Oil & Gas Operator | Apr 2025 |
| 12474 | Wylie, Fred, Jr. | Moran, TX 76464 | Oil & Gas Operator | Oct 2022 |
| 12475 | Wynco Energy, Inc. | Spring, TX 77393 | Oil & Gas Operator | Apr 2025 |
| 12476 | Wynn-Crosby Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2005 |
| 12477 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 12478 | Wynne Petroleum Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Nov 1997 |
| 12479 | Wyoming Diamond A LLC | Cheyenne, WY 82007 | Gas Operator | Apr 2025 |
| 12480 | X Stone Energy LLC. | Plano, TX 75093 | Oil & Gas Operator | Apr 2025 |
| 12481 | X-L Energy Company | El Paso, TX 79902 | Oil & Gas Operator | Apr 2025 |
| 12482 | X72 Operating Corp. | Plano, TX 75025 | Oil & Gas Operator | Apr 2025 |
| 12483 | XCL-Texas, Inc. | Lafayette, LA 70503 | Oil & Gas Operator | Nov 2000 |
| 12484 | Xenon Energy, Inc. | Plano, TX 75074 | Oil & Gas Operator | Aug 2003 |
| 12485 | Xeric Oil & Gas Company | Midland, TX 79702 | Oil & Gas Operator | Jul 1997 |
| 12486 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 12487 | Xet, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2017 |
| 12488 | Xhorizons Energy LLC | Houston, TX 77079 | Oil Operator | Apr 2025 |
| 12489 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 12490 | Xog Resources, LLC | Spring, TX 77379 | Oil & Gas Operator | Apr 2025 |
| 12491 | Xophi Energy, LLC | Arlington, TX 76006 | Oil & Gas Operator | Apr 2025 |
| 12492 | Xplor Energy Operating Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 2012 |
| 12493 | Xplore Operating, LLC | Arlington, TX 76001 | Oil & Gas Operator | Apr 2025 |
| 12494 | Xstar Resources LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2025 |
| 12495 | Xta Resources LLC | Del Valle, TX 78617 | Oil & Gas Operator | Apr 2025 |
| 12496 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2025 |
| 12497 | XTO Offshore Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2010 |
| 12498 | Xtra Energy, LLC | Fort Worth, TX 76161 | Oil & Gas Operator | Apr 2025 |
| 12499 | Xtreme Operating Company LLC | Flower Mound, TX 75022 | Oil Operator | Apr 2025 |
| 12500 | Xyz Oil, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Apr 2025 |