| 1 | W.I. Royalty, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Nov 2009 |
| 2 | Wagman, Brent A. | Dallas, TX 75202 | Oil & Gas Operator | Oct 2025 |
| 3 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Oct 2025 |
| 4 | Walter Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | May 2009 |
| 5 | Walton Producing Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2005 |
| 6 | Walton Producing Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 7 | Waters Petroleum | Albany, TX 76430 | Oil & Gas Operator | Aug 2016 |
| 8 | Watson Energy Investments, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 9 | Weakland Investments, Inc. | Denver, CO 80215 | Oil & Gas Operator | Oct 2025 |
| 10 | Wells Oilfield Services, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 11 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 12 | West Inland Energy, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Oct 2025 |
| 13 | West Texas Royalties, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 14 | West-States Energy, Inc. | Rimrock, AZ 86335 | Oil Operator | Oct 2025 |
| 15 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 16 | Western Reserves Corporation | Abilene, TX 79608 | Oil & Gas Operator | Jan 2008 |
| 17 | Western Reserves Oil Co Inc | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 18 | Westwood Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2013 |
| 19 | White, Oscar | Tuscola, TX 79562 | Oil & Gas Operator | Oct 2025 |
| 20 | Whiteside, H. W. | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 21 | Whitt Oil & Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 22 | Whitt, W. J. | Albany, TX 76430 | Oil & Gas Operator | Nov 1996 |
| 23 | Wilco Properties, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Jan 2004 |
| 24 | Wilcox Oil Company | Rule, TX 79547 | Oil & Gas Operator | Aug 2008 |
| 25 | Wilcox Petroleum Operating LLC. | Rule, TX 79547 | Oil & Gas Operator | Oct 2025 |
| 26 | Winchester Energy Operating Co. | Austin, TX 78746 | Oil & Gas Operator | Oct 2025 |
| 27 | Winco Oil Inc. | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 28 | Winfrey Oil Co., Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2016 |
| 29 | Wingrove Operating, LLC | Odessa, TX 79760 | Oil Operator | Oct 2025 |
| 30 | Wingrove Well Service, Inc. | Lueders, TX 79533 | Oil & Gas Operator | Nov 2023 |
| 31 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 32 | Woodygreen Resources, LLC | Plano, TX 75093 | Oil & Gas Operator | Oct 2025 |
| 33 | Woodygreen Resources, LP | Abilene, TX 79608 | Oil & Gas Operator | Mar 2012 |
| 34 | Wortham, E. H. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |