| 501 | Viola Production Inc | Dallas, TX 75251 | Oil & Gas Operator | Jul 2025 |
| 502 | Virtex Operating Company, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Oct 2023 |
| 503 | Virtex Petroleum Company, Inc. | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Jan 2008 |
| 504 | Vista Exploration, LLC | Abilene, TX 79601 | Oil & Gas Operator | May 2017 |
| 505 | VX Operating, LLC | Abilene, TX 79605 | Oil & Gas Operator | Jul 2025 |
| 506 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Jul 2025 |
| 507 | Walter Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | May 2009 |
| 508 | Way, Ralph L., Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 509 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 510 | West Bay Exploration Company | Muenster, TX 76252 | Oil & Gas Operator | Apr 2025 |
| 511 | West Inland Energy, Inc. | N Richlnd HLS, TX 76182 | Oil & Gas Operator | May 2025 |
| 512 | West Texas Diversified Interests | Eastland, TX 76448 | Oil & Gas Operator | Jun 2006 |
| 513 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 514 | Westoil LLC | Austin, TX 78747 | Oil & Gas Operator | Jul 2025 |
| 515 | Westridge Oil & Gas Properties | Mineral Wells, TX 76068 | Oil & Gas Operator | Jul 2025 |
| 516 | Whitehead Prod. Co., Inc. | Humble, TX 77338 | Oil & Gas Operator | May 2025 |
| 517 | Wilbanks, Bruce A. | Midland, TX 79701 | Oil & Gas Operator | Aug 1996 |
| 518 | Williams Oil Company | Midland, TX 79710 | Oil & Gas Operator | Jul 2025 |
| 519 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | Jul 2025 |
| 520 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 521 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 522 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Jul 2025 |
| 523 | Zachry Oil And Gas Properties | Midland, TX 79708 | Oil & Gas Operator | Jul 2025 |
| 524 | Zarvona Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |