| 1 | W & W Production, LLC | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 2 | W T X Capital Investments, LLC | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 3 | W. T. Boyle & Co. | Graham, TX 76450 | Oil Operator | Mar 2008 |
| 4 | Wade, Jim | Olney, TX 76374 | Oil & Gas Operator | Oct 2025 |
| 5 | Waggoner, W. T., Estate | Vernon, TX 76385 | Oil & Gas Operator | Feb 2018 |
| 6 | Wainoco Oil & Gas Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2005 |
| 7 | Walker Operating (I) | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 8 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Oct 2025 |
| 9 | Walter Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | May 2009 |
| 10 | Walter Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 11 | Walton Producing Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2005 |
| 12 | Walton, W. W. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 1994 |
| 13 | Ward, Charles Oil Company | Olney, TX 76374 | Oil Operator | Oct 2025 |
| 14 | Ward, L. S. | Graham, TX 76450 | Oil & Gas Operator | Jun 2001 |
| 15 | WB Mullin Operating LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 16 | Wells Oilfield Services, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 17 | Wes-Mor Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 18 | Wes-Mor Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 1994 |
| 19 | West Texas Royalties, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 20 | West,Gordon T.Jr. & Rugeley,Stan | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2019 |
| 21 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 22 | Western Chief Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 23 | Western Petroleum Resources, Inc | Dallas, TX 75219 | Oil & Gas Operator | May 2021 |
| 24 | Western Reserves Corporation | Abilene, TX 79608 | Oil & Gas Operator | Jan 2008 |
| 25 | Westneft LLC | Brooklyn, NY 11204 | Oil Operator | Oct 2025 |
| 26 | Westridge Oil & Gas Properties | Mineral Wells, TX 76068 | Oil & Gas Operator | Oct 2025 |
| 27 | White Knight Production LLC | Lafayette, LA 70505 | Oil & Gas Operator | Feb 2024 |
| 28 | White Oak Operating Company LLC | Houston, TX 77077 | Oil & Gas Operator | Oct 2025 |
| 29 | Whitehead Prod. Co., Inc. | Humble, TX 77338 | Oil & Gas Operator | Jun 2025 |
| 30 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 31 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jan 2025 |
| 32 | Whitten Energy Corp. | Houston, TX 77090 | Oil & Gas Operator | Oct 2025 |
| 33 | Wilcox Energy Company LLC | Rule, TX 79547 | Oil & Gas Operator | Oct 2025 |
| 34 | Wilcox Oil Company | Rule, TX 79547 | Oil & Gas Operator | Aug 2008 |
| 35 | Willis Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 36 | Willowbend Investments, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 37 | Wills Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1995 |
| 38 | Wills Oil Holdings, L.L.C. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 39 | Wilton, Frank | Graham, TX 76450 | Oil & Gas Operator | Oct 2016 |
| 40 | Wise Exploration | Perrin, TX 76486 | Oil & Gas Operator | Oct 2025 |
| 41 | Wise Production Company | Bowie, TX 76230 | Oil & Gas Operator | Oct 2025 |
| 42 | Wofford, C. J. | El Campo, TX 77437 | Oil & Gas Operator | Oct 2025 |
| 43 | Wolfson, I. J. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2002 |
| 44 | Wolsey Oil Inc. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 45 | Woodbine Petroleum, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Aug 2003 |
| 46 | World Producers, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1994 |
| 47 | Wortham, E. H. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 48 | WP Oil & Gas Exploration LLC | Loving, TX 76460 | Oil Operator | Oct 2025 |
| 49 | Wright, Robert W. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 50 | Wright, Robert W. Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 51 | Wynn-Crosby Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2005 |