| 1 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Dec 2024 |
| 2 | Walter Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | May 2009 |
| 3 | Walton, W. W. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 1994 |
| 4 | WB Mullin Operating LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 5 | Wells Oilfield Services, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 6 | Wes-Mor Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 7 | West,Gordon T.Jr. & Rugeley,Stan | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2019 |
| 8 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 9 | Western Chief Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 10 | Western Reserves Corporation | Abilene, TX 79608 | Oil & Gas Operator | Jan 2008 |
| 11 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
| 12 | Wheat, Buck Resources, Inc. | Eastland, TX 76448 | Oil & Gas Operator | Dec 2009 |
| 13 | White Rock Exploration, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jul 2021 |
| 14 | White, Jack Operating | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2024 |
| 15 | White, Oscar | Tuscola, TX 79562 | Oil & Gas Operator | Dec 2024 |
| 16 | Whiteside, H. W. | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 17 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jul 2024 |
| 18 | Whitt Oil & Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Dec 2024 |
| 19 | Wichita Falls Oil Expl. Co. | Holliday, TX 76366 | Oil & Gas Operator | Dec 2024 |
| 20 | Wichita Operating Company, Inc. | Spring, TX 77393 | Oil & Gas Operator | May 2009 |
| 21 | Wilco Properties, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Jan 2004 |
| 22 | Willowbend Investments, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2024 |
| 23 | Wimberley Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2013 |
| 24 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |
| 25 | Wortham, E. H. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |