| 1 | Wallis Energy, Inc. | Austin, TX 78746 | Oil & Gas Operator | Oct 2025 |
| 2 | Ward, E. B. | Alice, TX 78333 | Oil & Gas Operator | Jun 2001 |
| 3 | Warren American Oil Co | Tulsa, OK 74147 | Oil & Gas Operator | Jul 2025 |
| 4 | Waters Eng. & Operating, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Sep 2013 |
| 5 | Weaver & Sharp | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Mar 1997 |
| 6 | Welder Exploration & Prod., Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Dec 2022 |
| 7 | Welderxp LTD. | San Antonio, TX 78212 | Oil & Gas Operator | Oct 2025 |
| 8 | Western Gulf Oil & Gas, LLC | Bishop, TX 78343 | Oil & Gas Operator | Oct 2025 |
| 9 | White Oak Operating Company LLC | Houston, TX 77077 | Oil & Gas Operator | Oct 2025 |
| 10 | Winn Exploration Co., Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Oct 2025 |
| 11 | Winslow, Harry C. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 12 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 13 | Womack Operating, LLC. | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 14 | Wright Brothers Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Oct 2025 |
| 15 | Wright Brothers Petroleum, LTD. | San Antonio, TX 78212 | Oil & Gas Operator | May 2002 |
| 16 | WTXR Operating (Texas), Inc. | Carrollton, TX 75007 | Oil Operator | Oct 2025 |