| 1 | W S Crude Oil Purchasing Inc | Oklahoma City, OK 73129-7613 | Oil & Gas Operator | May 2008 |
| 2 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 3 | Walden E F | Ada, OK 74820 | Oil & Gas Operator | Aug 2014 |
| 4 | Waterbridge Arkoma Operating LLC | | Oil Operator | Dec 2023 |
| 5 | Waterloo Exploration LLC | | Gas Operator | Jan 2024 |
| 6 | Watkins J L | Morris, OK 74445-0325 | Oil & Gas Operator | Feb 2024 |
| 7 | Weatherly Oil & Gas, LLC | Dallas, TX 75206 | Oil & Gas Operator | Apr 2024 |
| 8 | Weinkauf Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2024 |
| 9 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Feb 2024 |
| 10 | WFD Oil Corporation | Edmond, OK 73012-0619 | Oil & Gas Operator | Feb 2024 |
| 11 | Wheeler Energy Co. | Tulsa, OK 74101 | Oil & Gas Operator | Jan 2024 |
| 12 | Wheeler Energy, LLC | Tulsa, OK 74101 | Oil & Gas Operator | Apr 2024 |
| 13 | Wild Horse Tank Trucks Inc | Duncan, OK 73533-7667 | Oil Operator | Oct 2016 |
| 14 | Williams Dale And Dorothy Family Trust | | Oil & Gas Operator | Jan 2024 |
| 15 | Williams Doyle Dba BCF Gas | Tulsa, OK 74114-7099 | Oil & Gas Operator | Jul 2023 |
| 16 | Williams Reid Oil Co | Dallas, TX 75234 | Oil & Gas Operator | Jan 2024 |
| 17 | Wilshire Enterprises Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 18 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 19 | Windward Development LLC | Tulsa, OK 74136-7007 | Oil & Gas Operator | Jul 2019 |
| 20 | Winston Oil Co | Marietta, OH 45750-754-754 | Oil & Gas Operator | Feb 2024 |
| 21 | Wise Oil & Gas Company LLC | Shawnee, OK 74801-8507 | Oil & Gas Operator | Jan 2024 |
| 22 | WM Energy Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2015 |
| 23 | Wolverine Petroleum Corp | Holdenville, OK 74848 | Oil & Gas Operator | Jul 1999 |
| 24 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 25 | Woodward Iodine Corporation | Woodward, OK 73802-1245 | Oil & Gas Operator | Feb 2024 |
| 26 | WPX Energy Mid-Continent Co | Oklahoma City, OK 73102-5010 | Oil & Gas Operator | Apr 2016 |
| 27 | Wynn-Crosby Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Jan 2024 |
| 28 | Wytex Production Corporation | Fort Smith, AR 72903 | Oil & Gas Operator | Jan 2020 |