| 1 | Walter Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | May 2009 |
| 2 | Watson Oil & Gas Co. | Gorman, TX 76454 | Oil & Gas Operator | Jan 2002 |
| 3 | Watson Oil & Gas, Inc. | Spicewood, TX 78669 | Oil & Gas Operator | Dec 2025 |
| 4 | Watson, Johnnie A., Inc. | Gorman, TX 76454 | Oil & Gas Operator | Jan 2002 |
| 5 | Weakland Investments, Inc. | Denver, CO 80215 | Oil & Gas Operator | Dec 2025 |
| 6 | Wehunt Oil Company, Inc. | Dallas, TX 75376 | Oil & Gas Operator | Nov 2002 |
| 7 | Wejco, Inc. | Rising Star, TX 76471 | Oil & Gas Operator | Dec 2025 |
| 8 | Welcome Well Serv. & Boykin Bros | Abilene, TX 79604 | Oil & Gas Operator | Apr 1995 |
| 9 | Wells Oilfield Services, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 10 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 11 | West Texas Royalties, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 12 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 13 | Western Gulf Oil & Gas Inc. | Dallas, TX 75360 | Oil & Gas Operator | Jul 2000 |
| 14 | Western Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 15 | Wheat, Buck Resources, Inc. | Eastland, TX 76448 | Oil & Gas Operator | Dec 2009 |
| 16 | Whiteside, Robert | Comanche, TX 76442 | Oil & Gas Operator | May 1998 |
| 17 | Whitt, W. J. | Albany, TX 76430 | Oil & Gas Operator | Nov 1996 |
| 18 | Whittington, James C., Inc. | Dallas, TX 75214 | Oil & Gas Operator | Jan 2017 |
| 19 | Wilbanks, Bruce A. | Midland, TX 79701 | Oil & Gas Operator | Aug 1996 |
| 20 | Wilbrook Exploration, Inc. | Lingleville, TX 76461 | Oil & Gas Operator | Aug 2003 |
| 21 | Wilchar, DR. R. B. | Fort Worth, TX 76185 | Oil & Gas Operator | Jan 2007 |
| 22 | Wilson Well Service Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2025 |
| 23 | Wilson, Jerry L. | Ranger, TX 76470 | Oil & Gas Operator | Dec 2025 |
| 24 | Wilson, Olan Max | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 25 | Wilson, WM. B. Exploration Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 1996 |
| 26 | Window Operating Co., The | Coleman, TX 76834 | Oil & Gas Operator | Dec 2025 |
| 27 | Wineridge Inc. | Austin, TX 78747 | Oil Operator | Dec 2025 |
| 28 | Wise Production Company | Bowie, TX 76230 | Oil & Gas Operator | Dec 2025 |
| 29 | WJC, Inc. | Post, TX 79356 | Oil & Gas Operator | Dec 2025 |
| 30 | World Producers, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1994 |
| 31 | Wright Oil And Gas, LLC | Benbrook, TX 76126 | Oil & Gas Operator | Dec 2025 |