| 1 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Oct 2025 |
| 2 | Warrior Exploration LLC | Sapulpa, OK 74067-1912 | Oil & Gas Operator | Jun 2025 |
| 3 | Warwick Associates LC | Oklahoma City, OK 73112 | Oil & Gas Operator | Jun 2025 |
| 4 | Watusi Energy LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 5 | Waylander LLC | Plano, TX 75025 | Oil & Gas Operator | Oct 2025 |
| 6 | Westerly Exploration, Inc. | Houston, TX 77256 | Oil & Gas Operator | Oct 2025 |
| 7 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 8 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
| 9 | WGR, Inc. | Houston, TX 77046 | Gas Operator | Jul 2007 |
| 10 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Oct 2025 |
| 11 | White Wing Petroleum Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2012 |
| 12 | White, Cecil | Monahans, TX 79756 | Oil & Gas Operator | Mar 2017 |
| 13 | Whitfield Energy | Midland, TX 79702 | Oil & Gas Operator | Jan 1999 |
| 14 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 15 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Oct 2025 |
| 16 | Williams-Cody, Inc. | Houston, TX 77060 | Oil & Gas Operator | May 1994 |
| 17 | Wind River Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 18 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 19 | Windsor Permian LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2012 |
| 20 | WJC, Inc. | Post, TX 79356 | Oil & Gas Operator | Oct 2025 |