| 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 | Warrior Exploration LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2023 |
| 4 | Wave Energy LLC | | Oil Operator | Mar 2024 |
| 5 | Welch Family Trust | Ada, OK 74820-9643 | Oil & Gas Operator | Apr 2015 |
| 6 | Wellco Energy Inc | Oklahoma City, OK 73113-0130 | Oil & Gas Operator | Feb 2024 |
| 7 | Wells Edward K | Sapulpa, OK 74066-4243 | Oil & Gas Operator | Jun 2004 |
| 8 | Wessel Oil And Gas | Cushing, OK 74023-9580 | Oil & Gas Operator | Mar 2015 |
| 9 | Western Mountain Resources LLC | | Oil & Gas Operator | Feb 2024 |
| 10 | Western Natl Resource Expl LLC | Oklahoma City, OK 73154-0755 | Oil & Gas Operator | Mar 2015 |
| 11 | Western Natural Resources Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 12 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Mar 2024 |
| 13 | Western Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jul 2014 |
| 14 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Mar 2024 |
| 15 | Westwood Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2013 |
| 16 | WFD Oil Corporation | Edmond, OK 73012-0619 | Oil & Gas Operator | Mar 2024 |
| 17 | White Star Petroleum LLC | | Oil & Gas Operator | Feb 2024 |
| 18 | White Wolf Energy LLC | | Oil & Gas Operator | Oct 2022 |
| 19 | Wil-MC Oil Corporation The | Irving, TX 75015-2510 | Oil & Gas Operator | Mar 1999 |
| 20 | Wilcox Pipe & Supply Co | Oklahoma City, OK 73189 | Oil & Gas Operator | May 2006 |
| 21 | Williams Refractories Inc | Cushing, OK 74023 | Oil & Gas Operator | Feb 2015 |
| 22 | Williams Roger F | Tulsa, OK 74152-0951 | Oil & Gas Operator | May 2013 |
| 23 | Wilshire Enterprises Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 24 | Windward Development LLC | Tulsa, OK 74136-7007 | Oil & Gas Operator | Jul 2019 |
| 25 | Winney Construction Company | Forks, WA 98331-0801 | Oil & Gas Operator | Jan 2013 |
| 26 | WN Operating Inc | Okmulgee, OK 74447-0551 | Oil & Gas Operator | Feb 2024 |
| 27 | Wolff'S Oilfield Service | Cushing, OK 74023-9789 | Oil & Gas Operator | Nov 2023 |
| 28 | Wood Fay C Estate | Enid, OK 73703 | Oil & Gas Operator | Jun 2013 |
| 29 | Woodward Iodine Corporation | Woodward, OK 73802-1245 | Oil & Gas Operator | Mar 2024 |
| 30 | World Oil | | Oil & Gas Operator | Nov 1998 |