| 701 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | May 2025 |
| 702 | United Oil & Minerals, Inc. | Austin, TX 78746 | Oil & Gas Operator | Jan 2001 |
| 703 | United Operating, LLC *** | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 704 | Unitex Oil & Gas, L.L.C. | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 705 | Universal Resources Corp. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jan 2000 |
| 706 | Us. Fuels, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 707 | Utoco, LTD. | Midland, TX 79704 | Oil Operator | May 2025 |
| 708 | V-F Petroleum Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 709 | Valley Petroleum Company | Abilene, TX 79608 | Oil & Gas Operator | May 2025 |
| 710 | Valpoint Operating, LLC | Amarillo, TX 79101 | Oil & Gas Operator | May 2025 |
| 711 | Vanguard Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2021 |
| 712 | Vanguard Permian LLC | Houston, TX 77057 | Oil & Gas Operator | Nov 2018 |
| 713 | Vin Fisher Operating, Inc. | Andrews, TX 79714 | Oil & Gas Operator | May 2025 |
| 714 | Vista Resources, Inc. (A) | Midland, TX 79701 | Oil & Gas Operator | Feb 2000 |
| 715 | Vogel, A. J., Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 1994 |
| 716 | Voskamp Exploration, Inc. | Midland, TX 79708 | Oil & Gas Operator | Sep 2010 |
| 717 | W & T Offshore, Inc. | Houston, TX 77057 | Oil & Gas Operator | May 2025 |
| 718 | W.O.G., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 719 | Wacker Oil Inc | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 720 | Wadi Petroleum Inc | Houston, TX 77014 | Oil & Gas Operator | May 2018 |
| 721 | Wallen Production Co. | Midland, TX 79702 | Oil & Gas Operator | Aug 1996 |
| 722 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | May 2025 |
| 723 | Watusi Energy LLC | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 724 | Way, Ralph L., Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 725 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 726 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 727 | Western Reserves Oil Co Inc | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 728 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 729 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
| 730 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | May 2025 |
| 731 | Whitehawk Production Company | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 732 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 733 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jan 2025 |
| 734 | Wilbanks Reserve Corporation | Denver, CO 80203 | Oil & Gas Operator | May 2025 |
| 735 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | May 2025 |
| 736 | Williamson, J. C. | Midland, TX 79701 | Oil & Gas Operator | Jan 2001 |
| 737 | Wilson Energy LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 738 | Wilson Exploration Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 1996 |
| 739 | Wind River Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 740 | Windy Cove Energy II, LLC | Houston, TX 77079 | Oil & Gas Operator | Sep 2020 |
| 741 | Wishbone Texas Operating Co LLC | Houston, TX 77064 | Oil & Gas Operator | Jul 2019 |
| 742 | Wood, McShane & Thams | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 743 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 744 | WTG Exploration Inc | Midland, TX 79705 | Oil & Gas Operator | Dec 2023 |
| 745 | Wynn-Crosby Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2005 |
| 746 | X-L Energy Company | El Paso, TX 79902 | Oil & Gas Operator | May 2025 |
| 747 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 748 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 749 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | May 2025 |
| 750 | Yates, Harvey E. Company | Roswell, NM 88201 | Oil & Gas Operator | Dec 2002 |
| 751 | Young Marshall R Oil Co | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |
| 752 | Yucca Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 753 | Zachry Oil And Gas Properties | Midland, TX 79708 | Oil & Gas Operator | May 2025 |
| 754 | Zarvona Energy LLC | Houston, TX 77002 | Oil & Gas Operator | May 2025 |