| 30901 | W. E. B. Well Tending Service, Inc. | Vienna, WV 26105 | Oil & Gas Operator | Nov 2011 |
| 30902 | W. E. O'Malley Inc. | | Oil & Gas Operator | Jun 1991 |
| 30903 | W. E. Orr | | Oil & Gas Operator | Dec 2024 |
| 30904 | W. G. Darsey, III | | Oil & Gas Operator | Nov 1981 |
| 30905 | W. H. Beene | | Oil & Gas Operator | Jan 2025 |
| 30906 | W. H. Hunt | | Oil & Gas Operator | Jan 1984 |
| 30907 | W. H. Hunt Trust Estate | | Oil & Gas Operator | Mar 1997 |
| 30908 | W. H. Hunt, Et Al | | Oil & Gas Operator | Jul 1990 |
| 30909 | W. Harlan Beene | | Oil Operator | Jan 2025 |
| 30910 | W. Harlan Beene Et Al | | Oil Operator | Dec 2002 |
| 30911 | W. J. Hamilton Operator | | Oil Operator | Aug 1978 |
| 30912 | W. J. Wegman, Jr. | | Gas Operator | Dec 1991 |
| 30913 | W. L. Estis | | Oil & Gas Operator | Dec 1999 |
| 30914 | W. L. Puls & T. D. Rush | | Oil & Gas Operator | Dec 1980 |
| 30915 | W. L. Rambo | | Oil Operator | Apr 1981 |
| 30916 | W. L. Rambo, Inc. | | Oil & Gas Operator | Aug 1985 |
| 30917 | W. M. Elliott Jr. | | Oil & Gas Operator | Dec 2009 |
| 30918 | W. M. Inabnet Agent | | Gas Operator | Oct 1985 |
| 30919 | W. M. Morgan | | Oil Operator | Jan 1985 |
| 30920 | W. R. Dudley | | Oil & Gas Operator | Aug 2025 |
| 30921 | W. R. G. Oil & Gas, Inc. | Arlington, TX 76013 | Oil & Gas Operator | Dec 1993 |
| 30922 | W. R. Jennings, Jr. | | Oil Operator | Aug 2003 |
| 30923 | W. R. Williams, Inc. | Amarillo, TX 79105 | Gas Operator | Dec 2019 |
| 30924 | W. S. Hale Petroleum | | Oil & Gas Operator | Jul 2015 |
| 30925 | W. S. Hale Petroleum, L.L.C. | | Oil & Gas Operator | Jan 2025 |
| 30926 | W. T. Boyle & Co. | Graham, TX 76450 | Oil Operator | Mar 2008 |
| 30927 | W. T. Waggoner Estate | | Oil & Gas Operator | Dec 1995 |
| 30928 | W. Trich & Hallwell, Inc. | | Oil & Gas Operator | Oct 1988 |
| 30929 | W. W. F. Oil Corporation | | Oil & Gas Operator | Dec 1999 |
| 30930 | W. W. Melton | | Oil Operator | Sep 1983 |
| 30931 | W.A. Oil Co. | Andrews, TX 79714 | Oil & Gas Operator | Aug 1997 |
| 30932 | W.B.D. Oil And Gas Inc. | Pampa, TX 79066 | Oil & Gas Operator | Oct 2019 |
| 30933 | W.D. Oil Company | Pampa, TX 79066 | Oil & Gas Operator | Oct 2001 |
| 30934 | W.D. Short Oil Co., LLC | Oxford, KS 67119 | Oil & Gas Operator | Jun 2025 |
| 30935 | W.E.S. Operating Company, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Nov 2011 |
| 30936 | W.H.D., Inc. | Euless, TX 76039 | Oil & Gas Operator | Aug 1998 |
| 30937 | W.I. Royalty, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Nov 2009 |
| 30938 | W.I.F.T. Operating, LLC | | Oil & Gas Operator | Aug 2025 |
| 30939 | W.J., Inc. | Ellis, KS 67637 | Oil Operator | Jan 2001 |
| 30940 | W.L. Ranch Inc. | Caldwell, TX 77836 | Oil & Gas Operator | Nov 2025 |
| 30941 | W.O.G., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 30942 | W.P. Moore, Inc. | | Oil Operator | Dec 1983 |
| 30943 | W.P.P.I. Inc. | Westbrook, TX 79565 | Oil & Gas Operator | Jul 2013 |
| 30944 | W.R. Guffey LLC | Dallas, TX 75206 | Oil & Gas Operator | Jul 2020 |
| 30945 | W.R.A. Oil Co. | | Oil & Gas Operator | Mar 2025 |
| 30946 | W.S. Red Hancock, Inc. | | Oil Operator | Dec 1986 |
| 30947 | W.T. Waggoner Estate, Inc. | Vernon, TX 76385 | Oil Operator | Nov 2025 |
| 30948 | W.W. Energy | Luling, TX 78648 | Oil & Gas Operator | Nov 2025 |
| 30949 | W.W.R. Holding, LLC | Coleman, TX 76834 | Oil & Gas Operator | Mar 2008 |
| 30950 | W4 Energy, LLC | Humboldt, KS 66748 | Gas Operator | Nov 2015 |
| 30951 | Wabash Energy Corporation | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2009 |
| 30952 | Wabash Production And Development, Inc. | Fairfield, IL 62837 | Gas Operator | Apr 2002 |
| 30953 | Wachob Jack | Sapulpa, OK 74066 | Oil Operator | Dec 2014 |
| 30954 | Wachob Oil & Gas LLC | Sapulpa, OK 74066-6987 | Oil Operator | Jun 2015 |
| 30955 | Wachtman-Schroed | | Oil Operator | Aug 1986 |
| 30956 | Wachtman-Schroeder, A General Partnership | Pawhuska, OK 74056 | Oil Operator | Jun 2025 |
| 30957 | Wacker Oil Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 30958 | Waco Corp | | Oil Operator | Jun 1983 |
| 30959 | Waco Oil | | Oil Operator | Apr 1992 |
| 30960 | Waco Oil & Gas Co., Inc. | Glenville, WV 26351-0397 | Oil & Gas Operator | Dec 2021 |
| 30961 | Waco Petro, LP | Sulphur SPGS, TX 75483 | Oil Operator | Sep 2015 |
| 30962 | Waco Production Co. | Archer City, TX 76351 | Oil & Gas Operator | Sep 1993 |
| 30963 | Waddell Norman | Seminole, OK 74868-1244 | Oil & Gas Operator | Nov 1998 |
| 30964 | Waddell, Eric F. | Natoma, KS 67651 | Oil Operator | Aug 1995 |
| 30965 | Waddell, Kent | Abilene, TX 79606 | Oil & Gas Operator | Nov 2010 |
| 30966 | Waddy & Son Oilfield Services Inc | Dellroy, OH 44620-9762 | Oil & Gas Operator | Dec 2024 |
| 30967 | Wade Energy Corporation | Carlsbad, NM 88220 | Oil & Gas Operator | Sep 1999 |
| 30968 | Wade Operating | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2025 |
| 30969 | Wade, Jim | Olney, TX 76374 | Oil & Gas Operator | Nov 2025 |
| 30970 | Wadi Exploration&Production,LLC | San Clemente, CA 92672 | Oil & Gas Operator | Jul 2020 |
| 30971 | Wadi Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Nov 2025 |
| 30972 | Wadi Petroleum Inc | Houston, TX 77014 | Oil & Gas Operator | May 2018 |
| 30973 | Wadkins T Roy | Bartlesville, OK 74006 | Oil & Gas Operator | Nov 2019 |
| 30974 | Wadley Bill & Son Drilling Co | Okmulgee, OK 74447 | Oil & Gas Operator | Jul 2025 |
| 30975 | Waelder Oil & Gas, Inc. | Fort Smith, AR 72903 | Oil & Gas Operator | Jul 2025 |
| 30976 | Waffenbauch USA Corp. | Westfield, NY 14787 | Gas Operator | Dec 2024 |
| 30977 | Waggner, Fred | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2025 |
| 30978 | Waggner, Robert | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2006 |
| 30979 | Waggoner Drilling Company | Bristow, OK 74010-0663 | Oil & Gas Operator | Jan 2014 |
| 30980 | Waggoner Oil & Gas Corp | Enid, OK 73703-1152 | Oil & Gas Operator | Aug 2025 |
| 30981 | Waggoner Operating, L.L.C. | Vernon, TX 76385 | Oil Operator | Nov 2025 |
| 30982 | Waggoner, John S. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2017 |
| 30983 | Waggoner, Ralph E. | Windthorst, TX 76389 | Oil & Gas Operator | Dec 2010 |
| 30984 | Waggoner, W. T., Estate | Vernon, TX 76385 | Oil & Gas Operator | Feb 2018 |
| 30985 | Waggoner-Baldridge Energy | | Oil Operator | Jun 1988 |
| 30986 | Waggoner-Baldridge Oper. Co, Inc | Dallas, TX 75206 | Oil & Gas Operator | Jan 1998 |
| 30987 | Wagman Petroleum, Inc. | Dallas, TX 75202 | Oil & Gas Operator | Nov 2025 |
| 30988 | Wagman, Brent A. | Dallas, TX 75202 | Oil & Gas Operator | Nov 2025 |
| 30989 | Wagner & Brown | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 30990 | Wagner & Brown Limited Partnership | Midland, TX 79701 | Oil & Gas Operator | Feb 2013 |
| 30991 | Wagner & Brown LP | Midland, TX 79702-1714 | Oil & Gas Operator | Aug 2022 |
| 30992 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 30993 | Wagner & Wagner | Indiana, PA 15701-1273 | Gas Operator | Dec 2012 |
| 30994 | Wagner And Brown LTD Dba Wagner And Brown LTD | | Oil & Gas Operator | Sep 2002 |
| 30995 | Wagner Energy LLC | Enid, OK 73701 | Oil Operator | Jul 2025 |
| 30996 | Wagner Gas And Oil LLC | | Oil Operator | Sep 2025 |
| 30997 | Wagner Oil And Gas | | Oil & Gas Operator | Dec 2016 |
| 30998 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2025 |
| 30999 | Wagner, Duer & Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 1999 |
| 31000 | Wagon Wheel Arklatex, LLC | | Oil & Gas Operator | May 2018 |