| 1 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 2 | Wagner, Duer & Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 1999 |
| 3 | Wallis Energy, Inc. | Austin, TX 78746 | Oil & Gas Operator | Apr 2024 |
| 4 | Wapiti Operating, LLC | Houston, TX 77043 | Oil & Gas Operator | Apr 2024 |
| 5 | Waters Eng. & Operating, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Sep 2013 |
| 6 | Watson Energy Investments, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2024 |
| 7 | Wen-Be | Jourdanton, TX 78026 | Oil & Gas Operator | Apr 2024 |
| 8 | West Texas Operating Company,LLC | Victoria, TX 77902 | Oil & Gas Operator | Mar 2023 |
| 9 | White Creek Energy | Three Rivers, TX 78071 | Oil & Gas Operator | Apr 2024 |
| 10 | White Oak Operating Company LLC | Houston, TX 77077 | Oil & Gas Operator | Apr 2024 |
| 11 | Wilbanks, Bruce A. Company | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 12 | Wiley Lease Co., LTD. | Jourdanton, TX 78026 | Oil Operator | Apr 2024 |
| 13 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |
| 14 | WJC, Inc. | Post, TX 79356 | Oil & Gas Operator | Apr 2024 |
| 15 | Wofford, C. J. | El Campo, TX 77437 | Oil & Gas Operator | Apr 2024 |
| 16 | WSM | New Braunfels, TX 78132 | Oil Operator | Apr 2024 |
| 17 | WSM LLC | New Braunfels, TX 78132 | Oil Operator | Apr 2024 |
| 18 | WTXR Operating (Texas), Inc. | Carrollton, TX 75007 | Oil Operator | Apr 2024 |
| 19 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2024 |