| 1 | Walter Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | May 2009 |
| 2 | Watkins Production Company | Dallas, TX 75229 | Oil & Gas Operator | Feb 2008 |
| 3 | Wells Oilfield Services, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 4 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 5 | West Inland Energy, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Apr 2024 |
| 6 | Western Energy Group, LLC | Leander, TX 78641 | Oil & Gas Operator | Apr 2024 |
| 7 | Western Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 8 | Western Sky Oil & Gas | Abilene, TX 79604 | Oil & Gas Operator | Aug 2003 |
| 9 | Westico Energy Co. | Abilene, TX 79605 | Oil & Gas Operator | Nov 2004 |
| 10 | Weststar Operating Company | Santa Anna, TX 76878 | Oil & Gas Operator | Mar 2015 |
| 11 | Westwood Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2013 |
| 12 | White, Oscar | Tuscola, TX 79562 | Oil & Gas Operator | Apr 2024 |
| 13 | Whitehead Prod. Co., Inc. | Humble, TX 77338 | Oil & Gas Operator | Jan 2024 |
| 14 | Whiteside, H. W. | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 15 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 16 | Whitt Oil & Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Apr 2024 |
| 17 | Whitt, W. J. | Albany, TX 76430 | Oil & Gas Operator | Nov 1996 |
| 18 | Wilbanks, Bruce A. | Midland, TX 79701 | Oil & Gas Operator | Aug 1996 |
| 19 | Wilbanks, Bruce A. Company | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 20 | Wilco Properties, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Jan 2004 |
| 21 | Williams Deville Operating, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Apr 2024 |
| 22 | Wilson Well Service Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Apr 2024 |
| 23 | Wilson, Olan Max | Cisco, TX 76437 | Oil & Gas Operator | Apr 2024 |
| 24 | Winco Oil Inc. | Abilene, TX 79608 | Oil & Gas Operator | Apr 2024 |
| 25 | Windham Resources | Abilene, TX 79608 | Oil & Gas Operator | Apr 2024 |
| 26 | Windham Resources, Inc. | Tuscola, TX 79562 | Oil & Gas Operator | Feb 2004 |
| 27 | Window Operating Co., The | Coleman, TX 76834 | Oil & Gas Operator | Apr 2024 |
| 28 | Woodygreen Resources, LLC | Plano, TX 75093 | Oil & Gas Operator | Apr 2024 |
| 29 | Wylie Bros. Prod. & DRGL. Co,Inc | Baird, TX 79504 | Oil & Gas Operator | Apr 2024 |
| 30 | Wylie, Fred, Jr. | Moran, TX 76464 | Oil & Gas Operator | Oct 2022 |