| 1 | Wadi Petroleum Inc | Houston, TX 77014 | Oil & Gas Operator | May 2018 |
| 2 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 3 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Oct 2025 |
| 4 | Warren, Earl T. | San Angelo, TX 76906 | Oil & Gas Operator | Oct 2025 |
| 5 | Waterbridge Texas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 6 | Watusi Energy LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 7 | Waylander LLC | Plano, TX 75025 | Oil & Gas Operator | Oct 2025 |
| 8 | Western Global Oil, Inc | Deerfld Beach, FL 33442 | Oil Operator | Oct 2025 |
| 9 | Western Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jul 2014 |
| 10 | Western Reserves Oil Co Inc | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 11 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 12 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Jul 2025 |
| 13 | Wheeler Energy Co. | Tulsa, OK 74101 | Oil & Gas Operator | Jun 2025 |
| 14 | Wheeler Energy, LLC | Tulsa, OK 74101 | Oil & Gas Operator | Oct 2025 |
| 15 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 16 | Wild Cat Operating Company | Victoria, TX 77903 | Oil & Gas Operator | Mar 2008 |
| 17 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Oct 2025 |
| 18 | Williams, Clayton Energy, L.L.C | Midland, TX 79705 | Oil & Gas Operator | May 1993 |
| 19 | Williams, Clayton W., Jr., Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 20 | Williamson, J. C. | Midland, TX 79701 | Oil & Gas Operator | Jan 2001 |
| 21 | Williamson, Ralph E. | Midland, TX 79702 | Oil & Gas Operator | Jan 2012 |
| 22 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 23 | Wolf Energy | Midland, TX 79701 | Oil & Gas Operator | Jan 1995 |
| 24 | Wolf Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2021 |
| 25 | WPX Energy Permian, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2025 |