| 1 | W C T Operating LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2025 |
| 2 | W-N Energy Corp | Tulsa, OK 74121-1468 | Oil & Gas Operator | Nov 1994 |
| 3 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 4 | Walden E F | Ada, OK 74820 | Oil & Gas Operator | Aug 2014 |
| 5 | Walker Keith F | Ardmore, OK 73401 | Oil & Gas Operator | Jan 2019 |
| 6 | Wallace Oil & Gas Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Dec 2025 |
| 7 | Walsh Jr F Howard | Fort Worth, TX 76102-4773 | Oil & Gas Operator | Jul 2025 |
| 8 | Walsh Jr F Howard Opr Co Inc | Fort Worth, TX 76102-4773 | Oil & Gas Operator | Feb 2016 |
| 9 | Walters Frank | Pernell, OK 73076 | Oil & Gas Operator | Sep 2014 |
| 10 | Walters Oil Company | Elmore City, OK 73433-9505 | Oil & Gas Operator | Aug 2025 |
| 11 | Walters Oil LLC | Elmore City, OK 73433-8637 | Oil Operator | Apr 2020 |
| 12 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Aug 2025 |
| 13 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | Dec 2025 |
| 14 | Warren Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | Jan 2016 |
| 15 | Warwick Associates LC | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 2025 |
| 16 | Warwick-Jupiter LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2025 |
| 17 | Washita Energy Inc | Pauls Valley, OK 73075-0923 | Oil & Gas Operator | Mar 2015 |
| 18 | Weatherly Oil & Gas, LLC | Dallas, TX 75206 | Oil & Gas Operator | Dec 2025 |
| 19 | Webb Donna Delan Dba Petrodudes | Crescent, OK 73028 | Oil & Gas Operator | Aug 2025 |
| 20 | Webb John L Estate A Partner | Wichita Falls, TX 76302 | Oil Operator | May 2008 |
| 21 | Webb Roy C | Davis, OK 73030 | Oil & Gas Operator | Jul 2025 |
| 22 | Webber Wesley | Davis, OK 73030 | Oil & Gas Operator | Oct 2009 |
| 23 | Weimer & Fitzhugh | Tulsa, OK 74103-4102 | Oil & Gas Operator | Dec 1993 |
| 24 | Welch Family Trust | Ada, OK 74820-9643 | Oil & Gas Operator | Apr 2015 |
| 25 | Wellco Energy Inc | Harrah, OK 73045 | Oil & Gas Operator | Aug 2025 |
| 26 | Wellco Production LLC | Purcell, OK 73080-6833 | Oil & Gas Operator | Aug 2025 |
| 27 | Wenexco, Inc. | Streetman, TX 75859 | Oil & Gas Operator | Dec 2025 |
| 28 | Wessely Energy Company | Dallas, TX 75206 | Oil & Gas Operator | May 2001 |
| 29 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Sep 2025 |
| 30 | Wheeler Richard Jr | Oklahoma City, OK 73112-8857 | Oil & Gas Operator | Mar 2005 |
| 31 | Whitaker Energy Inc | Humble, TX 77346-1798 | Oil & Gas Operator | Aug 2025 |
| 32 | Whitaker Raymond | Paul Valley, OK 73075-1041 | Oil & Gas Operator | May 2007 |
| 33 | Whitco Operating Company | Duncan, OK 73534-1936 | Oil & Gas Operator | Oct 2009 |
| 34 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 35 | Whitmar Exploration Company | Denver, CO 80202 | Oil & Gas Operator | Aug 2025 |
| 36 | Whitmar Natural Resources Co | Tulsa, OK 74136-9998 | Oil & Gas Operator | Jun 2004 |
| 37 | Whitmar Operating Company | Tulsa, OK 74103-3515 | Oil & Gas Operator | Apr 2009 |
| 38 | Wil-MC Oil Corporation The | Irving, TX 75015-2510 | Oil & Gas Operator | Mar 1999 |
| 39 | Wildhorse Oil & Gas Corporation | Ardmore, OK 73402 | Oil & Gas Operator | May 2019 |
| 40 | Wildhorse Operating Company | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2025 |
| 41 | Wilkins L L E & O Company | Shawnee, OK 74801 | Oil & Gas Operator | Aug 2018 |
| 42 | Williams Reid Oil Co | Dallas, TX 75234 | Oil & Gas Operator | Jul 2025 |
| 43 | Winchester Oil Corporation | Maysville, OK 73057-0600 | Oil & Gas Operator | Apr 2010 |
| 44 | Wise Oil & Gas Company LLC | Shawnee, OK 74801-8507 | Oil & Gas Operator | Feb 2024 |
| 45 | WLW Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Sep 2025 |
| 46 | WM Energy LLC | Asher, OK 74826 | Oil & Gas Operator | Aug 2025 |
| 47 | Wolf Howard Lee | Burneyville, OK 73430-9617 | Oil & Gas Operator | Jun 2000 |
| 48 | Wolverine Exploration Company | Houston, TX 77002 | Oil & Gas Operator | May 2019 |
| 49 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 50 | WR Oil & Gas LLC | Plano, TX 75024-3523 | Oil & Gas Operator | Aug 2025 |
| 51 | Wynn-Crosby Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Aug 2025 |