| 701 | Venoco, Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 702 | Verdad Oil & Gas Corporation | Dallas, TX 75235 | Oil & Gas Operator | Apr 2025 |
| 703 | Verdad Resources LLC | | Oil & Gas Operator | Feb 2025 |
| 704 | Virtex Petroleum Company, Inc. | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Jan 2008 |
| 705 | Vision Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2025 |
| 706 | Vista Operating Inc | | Oil & Gas Operator | Dec 2014 |
| 707 | Visual Optics Inc | | Oil Operator | Dec 2012 |
| 708 | Vitruvian Exploration LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2016 |
| 709 | Voyager Exploration Inc | Denver, CO 80202 | Oil & Gas Operator | May 2006 |
| 710 | Walker Oil & Gas Co LLC* Keith F | | Oil & Gas Operator | Jun 2011 |
| 711 | Wallace Oil & Gas Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Apr 2025 |
| 712 | Walsh Production Inc | | Oil & Gas Operator | Nov 2008 |
| 713 | Wapiti Operating, LLC | Houston, TX 77043 | Oil & Gas Operator | Apr 2025 |
| 714 | Ward & Son* Alfred | | Oil & Gas Operator | Jun 2023 |
| 715 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Jan 2025 |
| 716 | Wbi Production | | Gas Operator | May 2002 |
| 717 | Wellington Operating Company | | Oil & Gas Operator | Feb 2025 |
| 718 | Wellstar Corporation | Northglenn, CO 80233 | Oil & Gas Operator | Feb 2025 |
| 719 | Wesco Operating, Inc. | Casper, WY 82602 | Oil & Gas Operator | Mar 2025 |
| 720 | West Texas Operating Co LLC D/B/A Xtreme Energy Co | Victoria, TX 77902-2326 | Oil & Gas Operator | Jan 2025 |
| 721 | Westech Energy Corporation | Denver, CO 80237 | Oil & Gas Operator | Mar 2011 |
| 722 | Western Gas Resources Inc | Denver, CO 80202-1955 | Oil & Gas Operator | Dec 2007 |
| 723 | Western Gas Resources-Sand Wash Inc | | Oil & Gas Operator | Feb 2008 |
| 724 | Western Interior Energy Inc. | Denver, CO 80202 | Oil & Gas Operator | Jul 2020 |
| 725 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Feb 2025 |
| 726 | Westgate Oil Company, Inc. | Eureka, KS 67045 | Oil Operator | Jan 2025 |
| 727 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
| 728 | Wexpro Company | Rock Springs, WY 82902-0458 | Oil & Gas Operator | Feb 2025 |
| 729 | Wexpro Development Company | Salt Lake City, UT 84111 | Oil & Gas Operator | Feb 2025 |
| 730 | Whitewing Resources LLC | | Oil & Gas Operator | Jun 2014 |
| 731 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 732 | Whittier Energy Company | Farmington, NM 87499 | Oil & Gas Operator | Nov 2002 |
| 733 | Wiepking-Fullerton Energy LLC | | Oil & Gas Operator | Feb 2025 |
| 734 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2025 |
| 735 | Williford Resources LLC | Tulsa, OK 74136-1020 | Oil & Gas Operator | Feb 2025 |
| 736 | Wind River Exploration Inc | Sewickley, PA 15143 | Oil & Gas Operator | Dec 2024 |
| 737 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 738 | Winslow Resources Inc | | Oil & Gas Operator | May 2002 |
| 739 | Winter Ridge Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2011 |
| 740 | Wise* Wayne L | | Oil & Gas Operator | Dec 2023 |
| 741 | Wme Yates LLC | | Gas Operator | Dec 2023 |
| 742 | Wofford* William R | | Oil Operator | Jun 2014 |
| 743 | Wold Oil Properties Inc | Denver, CO 80203 | Oil & Gas Operator | Feb 2018 |
| 744 | Wolverine Resources LLC | | Oil & Gas Operator | Jan 2024 |
| 745 | WPX Energy Production LLC | Tulsa, OK 741013102 | Oil & Gas Operator | Nov 2020 |
| 746 | WPX Energy Rocky Mountain LLC | Tulsa, OK 74101 | Oil & Gas Operator | Feb 2025 |
| 747 | WPX Energy Ryan Gulch LLC | | Oil & Gas Operator | Nov 2013 |
| 748 | Wy Woodland Operating, LLC | Covington, TX 76636 | Oil & Gas Operator | Apr 2025 |
| 749 | Wyman* Louis M Dba Wyman Inc | | Oil & Gas Operator | Mar 2025 |
| 750 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 751 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 752 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2025 |