| 1 | W C T Operating LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 2024 |
| 2 | Wabash Energy Corporation | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2009 |
| 3 | Waggoner Oil & Gas Corp | Enid, OK 73703-1152 | Oil & Gas Operator | Oct 2024 |
| 4 | Wagner & Brown LP | Midland, TX 79702-1714 | Oil & Gas Operator | Aug 2022 |
| 5 | Walker Jr J C | | Oil & Gas Operator | Oct 1996 |
| 6 | Walker Keith F | Ardmore, OK 73401 | Oil & Gas Operator | Jan 2019 |
| 7 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Dec 2024 |
| 8 | Walter Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 9 | Walters Oil Company | Elmore City, OK 73433-9505 | Oil & Gas Operator | Sep 2024 |
| 10 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Sep 2024 |
| 11 | Watkins Energy LLC | Healdton, OK 73438 | Oil Operator | Sep 2024 |
| 12 | Webb John L Estate A Partner | Wichita Falls, TX 76302 | Oil Operator | May 2008 |
| 13 | Weimer & Fitzhugh | Tulsa, OK 74103-4102 | Oil & Gas Operator | Dec 1993 |
| 14 | West Fox SWD LLC | Ratliff City, OK 73481 | Oil Operator | Oct 2024 |
| 15 | Western Gas Resources Inc | Denver, CO 80202-1955 | Oil & Gas Operator | Dec 2007 |
| 16 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Oct 2024 |
| 17 | Westphal Oil & Gas Inc | Fort Smith, AR 72901-2199 | Oil & Gas Operator | Feb 2015 |
| 18 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 2024 |
| 19 | WFW Production Company, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2024 |
| 20 | Whitaker Raymond | Paul Valley, OK 73075-1041 | Oil & Gas Operator | May 2007 |
| 21 | Whitco Operating Company | Duncan, OK 73534-1936 | Oil & Gas Operator | Oct 2009 |
| 22 | White'S Well Service | Healdton, OK 73438-4160 | Oil & Gas Operator | Oct 2024 |
| 23 | Whiteman Industries, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2024 |
| 24 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 25 | Whitmar Exploration Company | Denver, CO 80202 | Oil & Gas Operator | Sep 2024 |
| 26 | Whitmar Natural Resources Co | Tulsa, OK 74136-9998 | Oil & Gas Operator | Jun 2004 |
| 27 | Whitmar Operating Company | Tulsa, OK 74103-3515 | Oil & Gas Operator | Apr 2009 |
| 28 | Wible Limited Liability Co | Edmond, OK 73012 | Oil Operator | Sep 2024 |
| 29 | Wila Inc | | Oil Operator | Dec 2000 |
| 30 | Wild Outdoors Oil LLC | Duncan, OK 73533 | Oil & Gas Operator | Oct 2024 |
| 31 | Wildhorse Oil & Gas Corporation | Ardmore, OK 73402 | Oil & Gas Operator | May 2019 |
| 32 | Wildhorse Operating Company | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2024 |
| 33 | Williams Jack W | Ardmore, OK 73401-4726 | Oil Operator | Feb 2017 |
| 34 | Williams Reid Oil Co | Dallas, TX 75234 | Oil & Gas Operator | Sep 2024 |
| 35 | Williams Royce S | Healdton, OK 73438-0306 | Oil & Gas Operator | Apr 2014 |
| 36 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2024 |
| 37 | Williford Petroleum LLC | Green CV SPGS, FL 32043 | Oil & Gas Operator | Dec 2024 |
| 38 | Williford Resources LLC | Tulsa, OK 74136-1020 | Oil & Gas Operator | Sep 2024 |
| 39 | Wilson Well Service | Loco, OK 73442-0114 | Oil & Gas Operator | Mar 2018 |
| 40 | Wind River Resources Inc | Tulsa, OK 74136-6381 | Oil & Gas Operator | Jun 2010 |
| 41 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 42 | Wishbone Oil & Gas | Noble, OK 73068 | Oil & Gas Operator | Mar 2007 |
| 43 | WLW Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Oct 2024 |
| 44 | Wright Richard | Ratliff City, OK 73481-0155 | Oil & Gas Operator | Mar 2015 |
| 45 | Wylie Henry C | Ratliff City, OK 73481-0102 | Oil Operator | May 2020 |