| 1 | W & W Properties | Westbrook, TX 79565 | Oil & Gas Operator | Aug 2018 |
| 2 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 3 | Wagner, Duer & Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 1999 |
| 4 | Wallen Production Co. | Midland, TX 79702 | Oil & Gas Operator | Aug 1996 |
| 5 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | May 2024 |
| 6 | Walter Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 7 | Warren American Oil Co | Tulsa, OK 74147 | Oil & Gas Operator | Mar 2024 |
| 8 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | May 2024 |
| 9 | Way, Ralph L., Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 10 | WCWB Energy, LLC | Midland, TX 79701 | Oil Operator | Sep 2015 |
| 11 | West Texas Oil And Gas Oper.,Inc | Houston, TX 77046 | Oil & Gas Operator | May 2024 |
| 12 | Westar Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 13 | Westco Oil Company | Ozona, TX 76943 | Oil & Gas Operator | May 2024 |
| 14 | Western Natural Gas Company | Shelby, MT 59474 | Oil & Gas Operator | Jan 2024 |
| 15 | Western Reserves Oil Co Inc | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 16 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
| 17 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Feb 2024 |
| 18 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 19 | Wilbanks, Bruce A. Company | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 20 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | May 2024 |
| 21 | Willo Oil & Gas Exploration, LLC | Boerne, TX 78006 | Oil & Gas Operator | Jul 2020 |
| 22 | Wilson, W. Corp. | Midland, TX 79705 | Oil & Gas Operator | Mar 1999 |
| 23 | Winchester Production Company | Shreveport, LA 71129 | Oil & Gas Operator | Nov 2008 |
| 24 | Winfrey Oil Co., Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2016 |
| 25 | Winn Exploration Co., Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | May 2024 |
| 26 | WJC, Inc. | Post, TX 79356 | Oil & Gas Operator | May 2024 |
| 27 | Wolfcamp Energy, LLC | Plano, TX 75024 | Gas Operator | May 2024 |
| 28 | Wood, McShane & Thams | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 29 | Woodard Energy Company | Houston, TX 77042 | Oil & Gas Operator | Mar 2010 |
| 30 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | May 2024 |
| 31 | WTG Exploration Inc | Midland, TX 79705 | Oil & Gas Operator | Dec 2023 |
| 32 | Wynco Energy, Inc. | Spring, TX 77393 | Oil & Gas Operator | May 2024 |