| 12301 | Wolsey Oil Inc. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 12302 | Wolsey Well Service, Inc. | Windthorst, TX 76389 | Oil & Gas Operator | Jul 2006 |
| 12303 | Wolsey Well Service, L.P. | Bowie, TX 76230 | Oil & Gas Operator | Jun 2014 |
| 12304 | Wolverine Exploration Company | Houston, TX 77002 | Oil & Gas Operator | May 2019 |
| 12305 | Womack Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 12306 | Womack Operating, LLC. | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 12307 | Wood Energy Corporation | Baytown, TX 77520 | Oil & Gas Operator | Jun 1999 |
| 12308 | Wood Hi Co., Inc. | Victoria, TX 77902 | Oil & Gas Operator | Dec 2004 |
| 12309 | Wood Oil Company | Tulsa, OK 74103 | Gas Operator | Oct 1997 |
| 12310 | Wood, C.W. | Calliham, TX 78007 | Oil & Gas Operator | Sep 2023 |
| 12311 | Wood, McShane & Thams | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 12312 | Woodard Energy Company | Houston, TX 77042 | Oil & Gas Operator | Mar 2010 |
| 12313 | Woodbine Acquisition LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2014 |
| 12314 | Woodbine Petroleum, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Aug 2003 |
| 12315 | Woodbine Production Corporation | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 12316 | Woods Oil Co. | Burkburnett, TX 76354 | Oil & Gas Operator | Oct 2025 |
| 12317 | Woods Operating Co., Inc. | Shreveport, LA 71136 | Oil & Gas Operator | Dec 2020 |
| 12318 | Woods, Herbert S. & Assoc. | El Dorado, AR 71730 | Gas Operator | Feb 2023 |
| 12319 | Woods, W.A. Oil Co. | Holliday, TX 76366 | Oil & Gas Operator | Dec 1993 |
| 12320 | Woodygreen Resources, LLC | Plano, TX 75093 | Oil & Gas Operator | Oct 2025 |
| 12321 | Woodygreen Resources, LP | Abilene, TX 79608 | Oil & Gas Operator | Mar 2012 |
| 12322 | Wooley Petroleum | Alvord, TX 76225 | Oil & Gas Operator | Oct 1994 |
| 12323 | World Energy Corporation | Laredo, TX 78041 | Oil & Gas Operator | Aug 2003 |
| 12324 | World Hydrocarbon, Inc. | Kaufman, TX 75142 | Gas Operator | Apr 1995 |
| 12325 | World Producers, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1994 |
| 12326 | Worldwide Energy Corp. | Freer, TX 78357 | Oil & Gas Operator | Jan 1997 |
| 12327 | Worldwide Exploration, Inc | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2002 |
| 12328 | Worsham-Steed Gas Storage, L.P. | Houston, TX 77002 | Oil & Gas Operator | Aug 2010 |
| 12329 | Worsham-Steed Gas Storage, LLC | Tulsa, OK 74172 | Oil & Gas Operator | Oct 2025 |
| 12330 | Wortham Oil & Gas | Conroe, TX 77301 | Oil & Gas Operator | Oct 2025 |
| 12331 | Wortham Operating, LLC | Holliday, TX 76366 | Oil & Gas Operator | Apr 2023 |
| 12332 | Wortham, E. H. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 12333 | Wortham, J. R. | Wichita Falls, TX 76310 | Oil & Gas Operator | Aug 2023 |
| 12334 | Wortham, Michael R. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 12335 | WP Oil & Gas Exploration LLC | Loving, TX 76460 | Oil Operator | Oct 2025 |
| 12336 | WPH Operating Company | Amarillo, TX 79105 | Oil & Gas Operator | Mar 2017 |
| 12337 | WPX Energy Gulf Coast, LP | Benbrook, TX 76126 | Oil & Gas Operator | May 2012 |
| 12338 | WPX Energy Permian, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2025 |
| 12339 | WR Resources, LLC | Jourdanton, TX 78026 | Oil & Gas Operator | Oct 2025 |
| 12340 | Wrath Energy, LLC | Odessa, TX 79760 | Oil Operator | Oct 2025 |
| 12341 | WRD Oil, LLC | Floresville, TX 78114 | Oil & Gas Operator | Oct 2025 |
| 12342 | WRD Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 12343 | Wright Aurora Enterprises, LLC | Canyon Lake, TX 78133 | Oil & Gas Operator | May 2020 |
| 12344 | Wright Brothers Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Oct 2025 |
| 12345 | Wright Brothers Petroleum, LTD. | San Antonio, TX 78212 | Oil & Gas Operator | May 2002 |
| 12346 | Wright Oil And Gas, LLC | Benbrook, TX 76126 | Oil & Gas Operator | Oct 2025 |
| 12347 | Wright Operating, Inc. | Denison, TX 75020 | Oil & Gas Operator | Oct 2025 |
| 12348 | Wright Trucking, Inc. | Weatherford, OK 73096 | Oil & Gas Operator | Feb 2019 |
| 12349 | Wright, Robert W. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 12350 | Wright, Robert W. Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 12351 | WRT Energy Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | May 1998 |
| 12352 | WS Ritter Critters, LLC | Groom, TX 79039 | Gas Operator | Oct 2025 |
| 12353 | WSF, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2013 |
| 12354 | WSM | New Braunfels, TX 78132 | Oil Operator | Oct 2025 |
| 12355 | WSM LLC | New Braunfels, TX 78132 | Oil Operator | Jun 2025 |
| 12356 | WT Fitts Operating | Bowie, TX 76230 | Oil & Gas Operator | Oct 2025 |
| 12357 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 12358 | WTG Exploration Inc | Midland, TX 79705 | Oil & Gas Operator | Dec 2023 |
| 12359 | WTP Energy, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Oct 2025 |
| 12360 | WTR Operating LLC | Troup, TX 75789 | Oil & Gas Operator | Oct 2025 |
| 12361 | WTXR Operating (Texas), Inc. | Carrollton, TX 75007 | Oil Operator | Oct 2025 |
| 12362 | WVH Operating LLC | Aledo, TX 76008 | Oil Operator | Oct 2025 |
| 12363 | Wy Woodland Operating, LLC | Covington, TX 76636 | Oil & Gas Operator | Oct 2025 |
| 12364 | Wyatt Permian, LLC | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Oct 2025 |
| 12365 | Wyco Oil & Gas LLC | Odessa, TX 79766 | Oil & Gas Operator | Jan 2024 |
| 12366 | Wylie Bros. Prod. & DRGL. Co,Inc | Baird, TX 79504 | Oil & Gas Operator | Oct 2025 |
| 12367 | Wylie, Fred, Jr. | Moran, TX 76464 | Oil & Gas Operator | Oct 2022 |
| 12368 | Wynco Energy, Inc. | Spring, TX 77393 | Oil & Gas Operator | Oct 2025 |
| 12369 | Wynn-Crosby Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2005 |
| 12370 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 12371 | Wynne Petroleum Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Nov 1997 |
| 12372 | Wyoming Diamond A LLC | Cheyenne, WY 82007 | Gas Operator | Oct 2025 |
| 12373 | X-L Energy Company | El Paso, TX 79902 | Oil & Gas Operator | Oct 2025 |
| 12374 | X72 Operating Corp. | Plano, TX 75025 | Oil & Gas Operator | Oct 2025 |
| 12375 | XCL-Texas, Inc. | Lafayette, LA 70503 | Oil & Gas Operator | Nov 2000 |
| 12376 | Xenon Energy, Inc. | Plano, TX 75074 | Oil & Gas Operator | Aug 2003 |
| 12377 | Xeric Oil & Gas Company | Midland, TX 79702 | Oil & Gas Operator | Jul 1997 |
| 12378 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 12379 | Xet, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2017 |
| 12380 | Xhorizons Energy LLC | Houston, TX 77079 | Oil Operator | Oct 2025 |
| 12381 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 12382 | Xog Resources, LLC | Spring, TX 77379 | Oil & Gas Operator | Oct 2025 |
| 12383 | Xophi Energy, LLC | Arlington, TX 76006 | Oil & Gas Operator | Oct 2025 |
| 12384 | Xplor Energy Operating Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 2012 |
| 12385 | Xplore Operating, LLC | Arlington, TX 76001 | Oil & Gas Operator | Oct 2025 |
| 12386 | Xstar Resources LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 12387 | Xta Resources LLC | Del Valle, TX 78617 | Oil & Gas Operator | Oct 2025 |
| 12388 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Oct 2025 |
| 12389 | XTO Offshore Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2010 |
| 12390 | Xtra Energy, LLC | Fort Worth, TX 76161 | Oil & Gas Operator | Oct 2025 |
| 12391 | Xtreme Operating Company LLC | Flower Mound, TX 75022 | Oil Operator | Oct 2025 |
| 12392 | Xyz Oil, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Oct 2025 |
| 12393 | Y Oil Company Inc. | Cameron, TX 76520 | Oil & Gas Operator | Oct 2025 |
| 12394 | Yale Oil Association | Oklahoma City, OK 73105 | Gas Operator | Oct 2013 |
| 12395 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Jul 2025 |
| 12396 | Yanahosa, Inc. | Kountze, TX 77625 | Oil Operator | Oct 2025 |
| 12397 | Yarberry Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 12398 | Yarberry, E. E. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2015 |
| 12399 | Yarborough Oil & Gas L.P. | Midland, TX 79701 | Oil & Gas Operator | Oct 2000 |
| 12400 | Yarborough, W. B. | Midland, TX 79701 | Oil & Gas Operator | Nov 1995 |