| 1 | Wallace Oil & Gas Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Dec 2025 |
| 2 | Wapiti Operating, LLC | Houston, TX 77043 | Oil & Gas Operator | Dec 2025 |
| 3 | Ward & Son* Alfred | | Oil & Gas Operator | Jul 2021 |
| 4 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Aug 2025 |
| 5 | Wavetech Helium Inc | | Gas Operator | Sep 2025 |
| 6 | Wellington Operating Company | | Oil & Gas Operator | Aug 2025 |
| 7 | Wellstar Corporation | Northglenn, CO 80233 | Oil & Gas Operator | Oct 2025 |
| 8 | Wesco Operating Inc | Casper, WY 82602 | Oil & Gas Operator | Oct 2025 |
| 9 | West Texas Operating Co LLC D/B/A Xtreme Energy Co | Victoria, TX 77902-2326 | Oil & Gas Operator | Sep 2025 |
| 10 | Western Gas Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 11 | Western Interior Energy Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
| 12 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Aug 2025 |
| 13 | Westgate Oil Company, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Oct 2025 |
| 14 | Wexpro Company | Rock Springs, WY 82902-0458 | Oil & Gas Operator | Sep 2025 |
| 15 | Wexpro Development Company | Salt Lake City, UT 84111 | Oil & Gas Operator | Sep 2025 |
| 16 | White River Development Company LLC | | Oil & Gas Operator | Nov 2019 |
| 17 | Wiepking-Fullerton Energy LLC | | Oil & Gas Operator | Sep 2025 |
| 18 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2025 |
| 19 | Williford Resources LLC | Tulsa, OK 74136-1020 | Oil & Gas Operator | Sep 2025 |
| 20 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 21 | Wise* Wayne L | | Oil & Gas Operator | Dec 2023 |
| 22 | Wme Yates LLC | | Gas Operator | Dec 2023 |
| 23 | Wold Oil Properties Inc | Denver, CO 80203 | Oil & Gas Operator | Feb 2018 |
| 24 | Wolverine Resources LLC | | Oil & Gas Operator | Jan 2024 |
| 25 | Woodard* Sandra K | | Oil Operator | Jul 2024 |
| 26 | Woodbury Resources LLC | | Oil & Gas Operator | Apr 2024 |
| 27 | WPX Energy Rocky Mountain LLC | Tulsa, OK 74101 | Oil & Gas Operator | Oct 2025 |
| 28 | Wy Woodland Operating, LLC | Covington, TX 76636 | Oil & Gas Operator | Dec 2025 |
| 29 | Wyman* Louis M Dba Wyman Inc | | Oil & Gas Operator | Oct 2025 |
| 30 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |