| 1 | W.O.G., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 2 | Wainoco Oil & Gas Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2005 |
| 3 | Warwick-Artemis, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Dec 2024 |
| 4 | Waters Eng. & Operating, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Sep 2013 |
| 5 | WCS Oil & Gas Corporation | Dallas, TX 75209 | Oil & Gas Operator | Aug 2021 |
| 6 | Weber Energy Corporation | Dallas, TX 75219 | Oil & Gas Operator | Feb 2017 |
| 7 | Western Energy Group, LLC | Leander, TX 78641 | Oil & Gas Operator | Dec 2024 |
| 8 | Westridge Oil & Gas Properties | Mineral Wells, TX 76068 | Oil & Gas Operator | Dec 2024 |
| 9 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 2024 |
| 10 | Wilbanks, Bruce A. Company | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 11 | Wild Cat Operating Company | Victoria, TX 77903 | Oil & Gas Operator | Mar 2008 |
| 12 | Wilmoth Interests, Inc. | Marion Center, PA 15759 | Oil & Gas Operator | Jul 2024 |
| 13 | Wilson, Billy R. | New Braunfels, TX 78130 | Oil & Gas Operator | Dec 2024 |
| 14 | Wind River Resources Inc | Tulsa, OK 74136-6381 | Oil & Gas Operator | Jun 2010 |
| 15 | Winn Exploration Co., Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Dec 2024 |
| 16 | Wofford, C. J. | El Campo, TX 77437 | Oil & Gas Operator | Dec 2024 |
| 17 | WTXR Operating (Texas), Inc. | Carrollton, TX 75007 | Oil Operator | Dec 2024 |