| 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 | Waggoner, W. T., Estate | Vernon, TX 76385 | Oil & Gas Operator | Feb 2018 |
| 5 | Waggoner-Baldridge Oper. Co, Inc | Dallas, TX 75206 | Oil & Gas Operator | Jan 1998 |
| 6 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Oct 2025 |
| 7 | Walter Exploration Company | Dallas, TX 75206 | Oil & Gas Operator | Oct 2025 |
| 8 | Walter Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | May 2009 |
| 9 | Ward, L. S. | Graham, TX 76450 | Oil & Gas Operator | Jun 2001 |
| 10 | Watco Energy | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 11 | WB Mullin Operating LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 12 | WBH Energy Partners LLC | Austin, TX 78703 | Oil & Gas Operator | Oct 2025 |
| 13 | Wells Oilfield Services, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 14 | Wes Pro, Inc. | Jacksboro, TX 76458 | Oil Operator | Jan 2013 |
| 15 | Wes-Mor Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 16 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 17 | Western Chief Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 18 | Westridge Oil & Gas Properties | Mineral Wells, TX 76068 | Oil & Gas Operator | Oct 2025 |
| 19 | WFW Production Company, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Oct 2025 |
| 20 | WG Operating, Inc. | Tulsa, OK 74153 | Oil & Gas Operator | May 2012 |
| 21 | White Knight Production LLC | Lafayette, LA 70505 | Oil & Gas Operator | Feb 2024 |
| 22 | White Oak Operating Company LLC | Houston, TX 77077 | Oil & Gas Operator | Oct 2025 |
| 23 | Whitehead Prod. Co., Inc. | Humble, TX 77338 | Oil & Gas Operator | Jun 2025 |
| 24 | Whittier Operating Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2007 |
| 25 | Willis Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 26 | Willowbend Investments, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 27 | Wills Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1995 |
| 28 | Wilton, Frank | Graham, TX 76450 | Oil & Gas Operator | Oct 2016 |
| 29 | Wineglass Production, LLC | Ranger, TX 76470 | Oil Operator | Oct 2025 |
| 30 | Winfield Operating Company | Dallas, TX 75214 | Oil & Gas Operator | Oct 2025 |
| 31 | Wise Exploration | Perrin, TX 76486 | Oil & Gas Operator | Oct 2025 |
| 32 | Wise Production Company | Bowie, TX 76230 | Oil & Gas Operator | Oct 2025 |
| 33 | Wise Supply Company | Bowie, TX 76230 | Oil & Gas Operator | Oct 2025 |
| 34 | Wise Well Service | Bowie, TX 76230 | Oil & Gas Operator | Jul 2017 |
| 35 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 36 | Wolfson, I. J. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2002 |
| 37 | Wolsey Oil Inc. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 38 | Wolsey Well Service, Inc. | Windthorst, TX 76389 | Oil & Gas Operator | Jul 2006 |
| 39 | Wolsey Well Service, L.P. | Bowie, TX 76230 | Oil & Gas Operator | Jun 2014 |
| 40 | Woodbine Petroleum, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Aug 2003 |
| 41 | Woods, Herbert S. & Assoc. | El Dorado, AR 71730 | Gas Operator | Feb 2023 |
| 42 | World Hydrocarbon, Inc. | Kaufman, TX 75142 | Gas Operator | Apr 1995 |
| 43 | World Producers, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1994 |
| 44 | Worsham-Steed Gas Storage, L.P. | Houston, TX 77002 | Oil & Gas Operator | Aug 2010 |
| 45 | Worsham-Steed Gas Storage, LLC | Tulsa, OK 74172 | Oil & Gas Operator | Oct 2025 |
| 46 | Wortham, E. H. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 47 | Wright, Robert W. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 48 | Wright, Robert W. Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 49 | Wy Woodland Operating, LLC | Covington, TX 76636 | Oil & Gas Operator | Oct 2025 |