| 11801 | W.D. Oil Company | Pampa, TX 79066 | Oil & Gas Operator | Oct 2001 |
| 11802 | W.E.S. Operating Company, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Nov 2011 |
| 11803 | W.H.D., Inc. | Euless, TX 76039 | Oil & Gas Operator | Aug 1998 |
| 11804 | W.I. Royalty, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Nov 2009 |
| 11805 | W.L. Ranch Inc. | Caldwell, TX 77836 | Oil & Gas Operator | Sep 2026 |
| 11806 | W.O.G., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 11807 | W.P.P.I. Inc. | Westbrook, TX 79565 | Oil & Gas Operator | Jul 2013 |
| 11808 | W.R. Guffey LLC | Dallas, TX 75206 | Oil & Gas Operator | Jul 2020 |
| 11809 | W.T. Waggoner Estate, Inc. | Vernon, TX 76385 | Oil Operator | Sep 2026 |
| 11810 | W.W. Energy | Luling, TX 78648 | Oil & Gas Operator | Sep 2026 |
| 11811 | W.W.R. Holding, LLC | Coleman, TX 76834 | Oil & Gas Operator | Mar 2008 |
| 11812 | Wacker Oil Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 11813 | Waco Petro, LP | Sulphur SPGS, TX 75483 | Oil Operator | Sep 2015 |
| 11814 | Waco Production Co. | Archer City, TX 76351 | Oil & Gas Operator | Sep 1993 |
| 11815 | Waddell, Kent | Abilene, TX 79606 | Oil & Gas Operator | Nov 2010 |
| 11816 | Wade Operating | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 11817 | Wade, Jim | Olney, TX 76374 | Oil & Gas Operator | Sep 2026 |
| 11818 | Wadi Exploration&Production,LLC | San Clemente, CA 92672 | Oil & Gas Operator | Jul 2020 |
| 11819 | Wadi Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Sep 2026 |
| 11820 | Wadi Petroleum Inc | Houston, TX 77014 | Oil & Gas Operator | May 2018 |
| 11821 | Waelder Oil & Gas, Inc. | Fort Smith, AR 72903 | Oil & Gas Operator | May 2026 |
| 11822 | Waggner, Fred | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2026 |
| 11823 | Waggner, Robert | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2006 |
| 11824 | Waggoner Operating, L.L.C. | Vernon, TX 76385 | Oil Operator | Sep 2026 |
| 11825 | Waggoner, John S. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2017 |
| 11826 | Waggoner, Ralph E. | Windthorst, TX 76389 | Oil & Gas Operator | Dec 2010 |
| 11827 | Waggoner, W. T., Estate | Vernon, TX 76385 | Oil & Gas Operator | Feb 2018 |
| 11828 | Waggoner-Baldridge Oper. Co, Inc | Dallas, TX 75206 | Oil & Gas Operator | Jan 1998 |
| 11829 | Wagman Petroleum, Inc. | Dallas, TX 75202 | Oil & Gas Operator | Sep 2026 |
| 11830 | Wagman, Brent A. | Dallas, TX 75202 | Oil & Gas Operator | Sep 2026 |
| 11831 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 11832 | Wagner Energy LLC | Enid, OK 73701 | Oil Operator | May 2026 |
| 11833 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2026 |
| 11834 | Wagner, Duer & Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 1999 |
| 11835 | Wainoco Oil & Gas Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2005 |
| 11836 | Wako Oil Co. LLC | Graham, TX 76450 | Oil Operator | Sep 2026 |
| 11837 | Walbet | Monahans, TX 79756 | Oil & Gas Operator | Dec 1993 |
| 11838 | Walbet, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Sep 2026 |
| 11839 | Waldrop, L. E. | Houston, TX 77024 | Oil & Gas Operator | Jun 1996 |
| 11840 | Walkabout Operating, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Sep 2026 |
| 11841 | Walker Oil & Gas | Early, TX 76802 | Oil & Gas Operator | Dec 2002 |
| 11842 | Walker Oil And Gas LTD | Snyder, TX 79550 | Oil Operator | Sep 2026 |
| 11843 | Walker Operating (I) | Wichita Falls, TX 76308 | Oil Operator | Sep 2026 |
| 11844 | Walker'S Well Service | Gladewater, TX 75647 | Oil & Gas Operator | Aug 2003 |
| 11845 | Walker, Daniel J. | La Vernia, TX 78121 | Oil Operator | Sep 2026 |
| 11846 | Walker, Harrel L. | La Vernia, TX 78121 | Oil & Gas Operator | May 2023 |
| 11847 | Walker, Kent | Midland, TX 79704 | Oil & Gas Operator | Jun 2004 |
| 11848 | Walker, Tigner | Shreveport, LA 71138 | Oil & Gas Operator | Feb 2005 |
| 11849 | Walking X Oil Co. | Whiteface, TX 79379 | Oil & Gas Operator | Sep 2026 |
| 11850 | Wallace Oil & Gas Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Sep 2026 |
| 11851 | Wallace Operating Company LLC | Metairie, LA 70003 | Gas Operator | Sep 2026 |
| 11852 | Wallen Production Co. | Midland, TX 79702 | Oil & Gas Operator | Aug 1996 |
| 11853 | Waller, C.W. Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Sep 2026 |
| 11854 | Wallis Energy, Inc. | Austin, TX 78746 | Oil & Gas Operator | Sep 2026 |
| 11855 | Walls Energy, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2003 |
| 11856 | Walls, G. M. & Frances, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Sep 2026 |
| 11857 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Sep 2026 |
| 11858 | Walsh Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2022 |
| 11859 | Walsh Resources, Inc. | Tyler, TX 75703 | Oil & Gas Operator | Sep 2026 |
| 11860 | Walsh, F H Jr. Operating Co. Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2019 |
| 11861 | Walsh, F. Howard, Jr. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 1994 |
| 11862 | Walter Exploration Company | Dallas, TX 75206 | Oil & Gas Operator | Sep 2026 |
| 11863 | Walter Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | May 2009 |
| 11864 | Walter H. Husfeld Oil Co LLC | Bowie, TX 76230 | Oil & Gas Operator | Sep 2026 |
| 11865 | Walter Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 11866 | Walterscheid, A. D. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2014 |
| 11867 | Walterscheid, R. F. | Muenster, TX 76252 | Oil & Gas Operator | Oct 1993 |
| 11868 | Walton Producing Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2005 |
| 11869 | Walton Producing Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 11870 | Walton Properties LTD. | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 11871 | Walton, James A. | Midland, TX 79702 | Oil & Gas Operator | Oct 1994 |
| 11872 | Walton, W. W. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 1994 |
| 11873 | Wam Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Dec 2016 |
| 11874 | Wandoo Energy, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | Dec 2025 |
| 11875 | Wapiti Energy, LLC | Houston, TX 77024 | Oil & Gas Operator | Jul 2006 |
| 11876 | Wapiti Operating, LLC | Houston, TX 77043 | Oil & Gas Operator | Sep 2026 |
| 11877 | Warbonnet Exploration Company | Houston, TX 77056 | Oil & Gas Operator | Apr 2016 |
| 11878 | Ward Oil Co. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 11879 | Ward Trust | Spring, TX 77383 | Oil & Gas Operator | May 2013 |
| 11880 | Ward, Charles Oil Company | Olney, TX 76374 | Oil Operator | Sep 2026 |
| 11881 | Ward, E. B. | Alice, TX 78333 | Oil & Gas Operator | Jun 2001 |
| 11882 | Ward, L. S. | Graham, TX 76450 | Oil & Gas Operator | Jun 2001 |
| 11883 | Ward, Ted G. Jr. | Monahans, TX 79756 | Oil & Gas Operator | Nov 2000 |
| 11884 | Warner Oil Co., Inc. | Canyon, TX 79015 | Oil & Gas Operator | May 2013 |
| 11885 | Warner Sisters, LLC | Thompsons Sta, TN 37179 | Oil Operator | Sep 2026 |
| 11886 | Warner, Mark T. Oil Co | Pampa, TX 79065 | Oil & Gas Operator | Jul 2021 |
| 11887 | Warner-Pawel | Alice, TX 78333 | Oil & Gas Operator | Sep 2026 |
| 11888 | Warnock Operating Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Jul 2013 |
| 11889 | Warren American Oil Co | Tulsa, OK 74147 | Oil & Gas Operator | Jun 2026 |
| 11890 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | Sep 2026 |
| 11891 | Warren Producers Inc | Bowling Green, KY 42102 | Oil & Gas Operator | Dec 2017 |
| 11892 | Warren Production Services | Caldwell, TX 77836 | Oil & Gas Operator | Sep 2026 |
| 11893 | Warren, Earl T. | San Angelo, TX 76906 | Oil & Gas Operator | Sep 2026 |
| 11894 | Warren, Joe H. | Dallas, TX 75206 | Oil & Gas Operator | Oct 2001 |
| 11895 | Warrior Exploration LLC | Sapulpa, OK 74067-1912 | Oil & Gas Operator | Mar 2026 |
| 11896 | Warrior Resources Inc. | Mexia, TX 76667 | Oil & Gas Operator | Sep 2026 |
| 11897 | Warwick Associates LC | Oklahoma City, OK 73112 | Oil & Gas Operator | Jun 2026 |
| 11898 | Warwick Oil & Gas, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 1993 |
| 11899 | Warwick Poseidon, GP | Nichols Hill, OK 73116 | Gas Operator | Sep 2026 |
| 11900 | Warwick-Artemis, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Sep 2026 |