| 5001 | Vivian Oil Partners, LLC | | Oil Operator | Jan 2025 |
| 5002 | Volvo Petroleum, Inc. | | Oil & Gas Operator | Jul 1984 |
| 5003 | Vonco Of Mississippi, Inc. | | Oil Operator | Dec 2025 |
| 5004 | Voyager Energy, LLC | | Oil & Gas Operator | Dec 2010 |
| 5005 | Vtex Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 5006 | W & C Oil & Gas | | Oil Operator | Feb 1996 |
| 5007 | W & K Oil Co. | | Oil & Gas Operator | Jun 1989 |
| 5008 | W & L Oil Co. | | Oil Operator | Aug 1995 |
| 5009 | W & T Oil Properties, Inc. | | Oil & Gas Operator | Nov 1989 |
| 5010 | W A Lusk | | Oil & Gas Operator | Jul 2000 |
| 5011 | W A Moncrief Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2026 |
| 5012 | W B Powers Production Serv. | | Oil Operator | Feb 1991 |
| 5013 | W D L Enterprises, Inc | | Oil & Gas Operator | Apr 1983 |
| 5014 | W M Smith | | Oil Operator | Jun 1989 |
| 5015 | W&S Energy LLC | Woodward, OK 73801 | Oil & Gas Operator | Sep 2022 |
| 5016 | W&T Offshore, Inc. | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 5017 | W&W Oil Co | Denver City, TX 79323 | Oil Operator | Jun 2002 |
| 5018 | W. A. Moncrief | | Oil & Gas Operator | Jun 2010 |
| 5019 | W. A. Parker | | Oil & Gas Operator | Jan 1981 |
| 5020 | W. A. Stanberry | | Oil & Gas Operator | Nov 1988 |
| 5021 | W. B. Inabnet | | Gas Operator | Oct 1985 |
| 5022 | W. B. Jayred | | Oil & Gas Operator | Aug 1982 |
| 5023 | W. B. McCarter, Jr., Inc. | | Oil & Gas Operator | Dec 1995 |
| 5024 | W. C. Allen | | Oil & Gas Operator | Dec 2024 |
| 5025 | W. C. Emmons | | Oil Operator | Jan 2025 |
| 5026 | W. D. Roberson | | Gas Operator | Mar 2021 |
| 5027 | W. D. Tarver | | Oil Operator | Aug 2005 |
| 5028 | W. E. O'Malley Inc. | | Oil & Gas Operator | Jun 1991 |
| 5029 | W. E. Orr | | Oil & Gas Operator | Dec 2024 |
| 5030 | W. G. Darsey, III | | Oil & Gas Operator | Nov 1981 |
| 5031 | W. H. Beene | | Oil & Gas Operator | Jan 2025 |
| 5032 | W. H. Hunt | | Oil & Gas Operator | Jan 1984 |
| 5033 | W. H. Hunt, Et Al | | Oil & Gas Operator | Jul 1990 |
| 5034 | W. Harlan Beene | | Oil Operator | Jan 2025 |
| 5035 | W. Harlan Beene Et Al | | Oil Operator | Dec 2002 |
| 5036 | W. J. Wegman, Jr. | | Gas Operator | Dec 1991 |
| 5037 | W. L. Estis | | Oil & Gas Operator | Dec 1999 |
| 5038 | W. L. Puls & T. D. Rush | | Oil & Gas Operator | Dec 1980 |
| 5039 | W. L. Rambo | | Oil Operator | Apr 1981 |
| 5040 | W. L. Rambo, Inc. | | Oil & Gas Operator | Aug 1985 |
| 5041 | W. M. Inabnet Agent | | Gas Operator | Oct 1985 |
| 5042 | W. M. Morgan | | Oil Operator | Jan 1985 |
| 5043 | W. R. Jennings, Jr. | | Oil Operator | Aug 2003 |
| 5044 | W. S. Hale Petroleum | | Oil & Gas Operator | Jul 2015 |
| 5045 | W. S. Hale Petroleum, L.L.C. | | Oil & Gas Operator | Jan 2025 |
| 5046 | W. T. Waggoner Estate | | Oil & Gas Operator | Dec 1995 |
| 5047 | W. Trich & Hallwell, Inc. | | Oil & Gas Operator | Oct 1988 |
| 5048 | W. W. F. Oil Corporation | | Oil & Gas Operator | Dec 1999 |
| 5049 | W. W. Melton | | Oil Operator | Sep 1983 |
| 5050 | W.D. Oil Company | Pampa, TX 79066 | Oil & Gas Operator | Oct 2001 |
| 5051 | Wacker Oil Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 5052 | Wagner & Brown | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 5053 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 5054 | Wagon Wheel Arklatex, LLC | | Oil & Gas Operator | May 2018 |
| 5055 | Wainoco Oil & Gas Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2005 |
| 5056 | Walker Energy, LLC | | Oil & Gas Operator | Nov 2024 |
| 5057 | Walker La. Properties | | Oil & Gas Operator | Oct 1990 |
| 5058 | Walker Management Company | | Oil & Gas Operator | Apr 1988 |
| 5059 | Walker-Wilson | | Oil & Gas Operator | Jul 1999 |
| 5060 | Wallace D. Putman, Jr. | | Oil Operator | Jan 2025 |
| 5061 | Wallace Operating Company | | Oil & Gas Operator | Sep 1986 |
| 5062 | Waller Brothers Inc | | Oil & Gas Operator | Jul 2004 |
| 5063 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Feb 2026 |
| 5064 | Walter Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 5065 | Walter T. Lanaux | | Oil & Gas Operator | Nov 1990 |
| 5066 | Walter W. Heard, Jr. | | Oil & Gas Operator | Dec 1995 |
| 5067 | Walters Production | | Oil Operator | Mar 2005 |
| 5068 | Wapiti Operating, LLC | Houston, TX 77043 | Oil & Gas Operator | Feb 2026 |
| 5069 | Warhorse Oil & Gas, LLC | | Oil & Gas Operator | Dec 2018 |
| 5070 | Warwick Oil & Gas, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 1993 |
| 5071 | Warwick Oil Corp. | | Oil & Gas Operator | Mar 1990 |
| 5072 | Watchtower Petroleum, LLC | | Oil & Gas Operator | Jun 2025 |
| 5073 | Watson Energy, L.L.C. | | Oil & Gas Operator | Jun 2005 |
| 5074 | Watson Oil & Gas Corp. | | Oil Operator | Aug 1994 |
| 5075 | Watson Oil Corporation | | Oil & Gas Operator | Jun 1981 |
| 5076 | Watts And Hill Oil Company | | Oil Operator | Sep 1995 |
| 5077 | Wayman W. Buchanan | | Oil & Gas Operator | Feb 1986 |
| 5078 | Wayne J. Spears | | Oil & Gas Operator | Sep 2005 |
| 5079 | Wayne Pender | | Gas Operator | Jan 2011 |
| 5080 | WCC Energy Group LLC | | Oil & Gas Operator | Dec 2024 |
| 5081 | Weatherly Oil & Gas, LLC | Dallas, TX 75206 | Oil & Gas Operator | Feb 2026 |
| 5082 | Weathersby Oil Co. | | Oil Operator | Oct 2001 |
| 5083 | Weaver Bros | | Oil Operator | Nov 1987 |
| 5084 | Weaver Expl & Brock Pet Corp | | Oil & Gas Operator | Apr 1983 |
| 5085 | Weaver Exploration Company | | Oil & Gas Operator | Jun 1991 |
| 5086 | Weaver Oil & Gas Corporation | | Oil & Gas Operator | Dec 1984 |
| 5087 | Webster Energy, Inc. | | Oil & Gas Operator | Jan 1999 |
| 5088 | Wedco Resources Corporation | | Oil & Gas Operator | Jul 1989 |
| 5089 | Weeks Exploration Company | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 5090 | Weiser-Brown Operating Company | Magnolia, AR 71754 | Oil & Gas Operator | Feb 2026 |
| 5091 | Wells-Battelstein O&G, Inc. | | Gas Operator | Dec 1986 |
| 5092 | Wenert Trich | | Oil & Gas Operator | Oct 1988 |
| 5093 | Wentworth Production Company | | Oil & Gas Operator | Aug 1985 |
| 5094 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 5095 | Wesla Oil & Gas Co., Inc. | | Oil & Gas Operator | Jun 2001 |
| 5096 | Wessely Energy Company | Dallas, TX 75206 | Oil & Gas Operator | May 2001 |
| 5097 | Wessely Energy Corporation | | Oil & Gas Operator | Feb 1989 |
| 5098 | West Delta Oil Co. | | Oil & Gas Operator | Jul 2000 |
| 5099 | Westall Oil & Gas Co. | | Oil & Gas Operator | May 1982 |
| 5100 | Westar Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |