| 1 | Wadi Petroleum Inc | Houston, TX 77014 | Oil & Gas Operator | May 2018 |
| 2 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2024 |
| 3 | Wagner, Duer & Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 1999 |
| 4 | Walbet | Monahans, TX 79756 | Oil & Gas Operator | Dec 1993 |
| 5 | Walbet, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Dec 2024 |
| 6 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Dec 2024 |
| 7 | Walton Properties LTD. | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 8 | Waterbridge Texas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2024 |
| 9 | Watson Packer Employee Fund | Monahans, TX 79756 | Oil & Gas Operator | Dec 2024 |
| 10 | Way, Ralph L., Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2024 |
| 11 | Wellstar Corporation | Northglenn, CO 80233 | Oil & Gas Operator | Oct 2024 |
| 12 | Western Disposal Systems, Inc. | Corrales, NM 87048 | Oil Operator | Dec 2024 |
| 13 | Western Reserves Oil Co Inc | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 14 | Westover Production Co., LLC | Kermit, TX 79745 | Oil & Gas Operator | Dec 2024 |
| 15 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
| 16 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 2024 |
| 17 | White Sail Resources LLC | Austin, TX 78731 | Oil Operator | Dec 2024 |
| 18 | White Wing Petroleum Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2012 |
| 19 | White, Cecil | Monahans, TX 79756 | Oil & Gas Operator | Mar 2017 |
| 20 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 21 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jul 2024 |
| 22 | Wilco Properties, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Jan 2004 |
| 23 | Williams Oil Company | Midland, TX 79710 | Oil & Gas Operator | Dec 2024 |
| 24 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Dec 2024 |
| 25 | Wilson Exploration Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 1996 |
| 26 | Wilson, WM. B. Exploration Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 1996 |
| 27 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 28 | Wineridge Inc. | Austin, TX 78747 | Oil Operator | Dec 2024 |
| 29 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |
| 30 | Wolf Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2021 |
| 31 | Wolverine Exploration Company | Houston, TX 77002 | Oil & Gas Operator | May 2019 |
| 32 | WPX Energy Permian, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2024 |
| 33 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | Dec 2024 |
| 34 | WTG Exploration Inc | Midland, TX 79705 | Oil & Gas Operator | Dec 2023 |
| 35 | Wynn-Crosby Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2005 |