| 1 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2025 |
| 2 | Wallace Oil & Gas Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Jun 2025 |
| 3 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Feb 2025 |
| 4 | Wente Exploration Inc | Oklahoma City, OK 73102 | Gas Operator | Oct 2011 |
| 5 | Wentworth Operating Company | Oklahoma City, OK 73162-1863 | Oil & Gas Operator | Mar 2025 |
| 6 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Mar 2025 |
| 7 | Wheeler Energy Co. | Tulsa, OK 74101 | Oil & Gas Operator | Feb 2025 |
| 8 | Whitmar Exploration Company | Denver, CO 80202 | Oil & Gas Operator | Jan 2025 |
| 9 | Whitmar Operating Company | Tulsa, OK 74103-3515 | Oil & Gas Operator | Apr 2009 |
| 10 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Jun 2025 |
| 11 | Williford Resources, L.L.C. | Tulsa, OK 74136-1020 | Oil & Gas Operator | Mar 2025 |
| 12 | Wohlford Properties Inc | Barling, AR 72923 | Gas Operator | Apr 2022 |
| 13 | WPX Energy Mid-Continent Co | Oklahoma City, OK 73102-5010 | Oil & Gas Operator | Apr 2016 |
| 14 | Wright V Gerald | Cushing, OK 74023 | Oil & Gas Operator | Nov 2003 |
| 15 | Wytex Production Corporation | Fort Smith, AR 72903 | Oil & Gas Operator | Jan 2020 |