| 1 | W S Crude Oil Purchasing Inc | Oklahoma City, OK 73129-7613 | Oil & Gas Operator | May 2008 |
| 2 | Walker Keith F | Ardmore, OK 73401 | Oil & Gas Operator | Jan 2019 |
| 3 | West Bay Exploration Company | Muenster, TX 76252 | Oil & Gas Operator | Feb 2024 |
| 4 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Feb 2024 |
| 5 | WFD Oil Corporation | Edmond, OK 73012-0619 | Oil & Gas Operator | Feb 2024 |
| 6 | WFW Production Company, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Apr 2024 |
| 7 | Whitco Operating Company | Duncan, OK 73534-1936 | Oil & Gas Operator | Oct 2009 |
| 8 | Wible Limited Liability Co | Oklahoma City, OK 73116-7326 | Oil Operator | Jan 2024 |
| 9 | Wilcoxson Brothers | Terral, OK 73569 | Oil Operator | Mar 2008 |
| 10 | Wildhorse Operating Company | Ardmore, OK 73402 | Oil & Gas Operator | Apr 2024 |
| 11 | Williams Reid Oil Co | Dallas, TX 75234 | Oil & Gas Operator | Jan 2024 |
| 12 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2024 |
| 13 | Williford Resources LLC | Tulsa, OK 74136-1020 | Oil & Gas Operator | Feb 2024 |
| 14 | Wilson Charles R | Durant, OK 74701-4910 | Oil Operator | May 2023 |
| 15 | Wilson Claude And Ila | Loco, OK 73442-9404 | Oil & Gas Operator | Feb 2024 |
| 16 | Wilson Well Service | Loco, OK 73442-0114 | Oil & Gas Operator | Mar 2018 |
| 17 | Windward Development LLC | Tulsa, OK 74136-7007 | Oil & Gas Operator | Jul 2019 |
| 18 | Wonee Oil Company | Healdton, OK 73438 | Oil Operator | Jul 1996 |
| 19 | Woodward Iodine Corporation | Woodward, OK 73802-1245 | Oil & Gas Operator | Feb 2024 |