| 1 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 2 | Warren Production Services | Caldwell, TX 77836 | Oil & Gas Operator | Oct 2025 |
| 3 | Warrior Resources Inc. | Mexia, TX 76667 | Oil & Gas Operator | Oct 2025 |
| 4 | WCS Oil & Gas Corporation | Dallas, TX 75209 | Oil & Gas Operator | Aug 2021 |
| 5 | Weatherly Oil & Gas, LLC | Dallas, TX 75206 | Oil & Gas Operator | Oct 2025 |
| 6 | Westridge Oil & Gas Properties | Mineral Wells, TX 76068 | Oil & Gas Operator | Oct 2025 |
| 7 | Whitman-Dome Energy Corporation | San Diego, CA 92101 | Oil & Gas Operator | Nov 1996 |
| 8 | Wildfire Energy Operating LLC | Houston, TX 77224 | Oil & Gas Operator | Oct 2025 |
| 9 | Wildhorse Resources MNGT Co, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2019 |
| 10 | Wildhorse Resources, LLC | Houston, TX 77279 | Oil & Gas Operator | Feb 2015 |
| 11 | Williams Oil Company | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 12 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Oct 2025 |
| 13 | Willo Oil & Gas Exploration, LLC | Boerne, TX 78006 | Oil & Gas Operator | Jul 2020 |
| 14 | WJW Operating Co.,LLC | Austin, TX 78738 | Oil & Gas Operator | May 2002 |
| 15 | WTG Exploration Inc | Midland, TX 79705 | Oil & Gas Operator | Dec 2023 |