| 4801 | Universal Resources Corp. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jan 2000 |
| 4802 | University Field Management LLC | | Oil Operator | Nov 2024 |
| 4803 | Unocal Exploration Corporation | | Oil & Gas Operator | May 1992 |
| 4804 | Upstream Exploration LLC | Metairie, LA 70002 | Oil & Gas Operator | Jan 2020 |
| 4805 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | May 2025 |
| 4806 | Us Liquids Of La, LTD | | Oil Operator | Jul 2002 |
| 4807 | Us Oil & Gas Inc | Marietta, OH 45750 | Oil & Gas Operator | Mar 2025 |
| 4808 | V L Pittman PC & Producer, Inc | | Oil & Gas Operator | Jul 1989 |
| 4809 | V. E. Karnes | | Oil Operator | Jun 1989 |
| 4810 | V. H. Brumley | | Oil Operator | Jul 1994 |
| 4811 | V. Monta Currie, Jr. | | Oil Operator | Jun 2007 |
| 4812 | Vale Petroleum Corporation | Houston, TX 77042 | Gas Operator | Jan 1995 |
| 4813 | Valerius, Inc. & Zine, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Jul 1994 |
| 4814 | Vamos Oil & Gas, LLC | Miami, FL 33129 | Oil & Gas Operator | May 2025 |
| 4815 | Van Operating, LTD. | Albany, TX 76430 | Oil & Gas Operator | May 2025 |
| 4816 | Van Zanten, Inc. | | Gas Operator | Jan 1990 |
| 4817 | Vanguard Environmental, LLC | | Oil Operator | Nov 2024 |
| 4818 | Vanguard Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2021 |
| 4819 | Vanguard Petroleum Corp. | | Gas Operator | Jun 1986 |
| 4820 | Vantage Point Operating Co | Houston, TX 77057 | Oil & Gas Operator | Dec 2014 |
| 4821 | Vaquero Resources, LLC | Edmond, OK 73034 | Oil & Gas Operator | Feb 2025 |
| 4822 | Varco Oil | | Oil & Gas Operator | Apr 1991 |
| 4823 | Vast Oil Inc | Fullerton, CA 92832 | Oil & Gas Operator | Mar 2024 |
| 4824 | Vastar Resources Inc | Houston, TX 77253 | Oil & Gas Operator | Jan 2025 |
| 4825 | Vaughn Petroleum, Inc. | Dallas, TX 75219 | Oil & Gas Operator | May 2004 |
| 4826 | Vector Energy Corporation | Houston, TX 77060 | Oil & Gas Operator | May 2025 |
| 4827 | Vector Minerals Corporation | Aurora, CO 80015 | Oil & Gas Operator | Mar 2025 |
| 4828 | Vega Oil & Gas MGMT., Inc. | | Oil & Gas Operator | Aug 1981 |
| 4829 | Velandera Energy Partners LLC | | Oil & Gas Operator | Nov 2024 |
| 4830 | Venado Petroleum Corporation | Dallas, TX 75231 | Oil & Gas Operator | May 2012 |
| 4831 | Ventex Operating Corp. | Addison, TX 75001 | Oil & Gas Operator | May 2025 |
| 4832 | Venture Oil & Gas, Inc. | Laurel, MS 39440 | Oil & Gas Operator | Mar 2025 |
| 4833 | Venture Oil Company Of Texas | | Oil Operator | Sep 1988 |
| 4834 | Ventures Oil & Gas Of La Inc. | | Oil & Gas Operator | Jun 1999 |
| 4835 | Venvirotek Of Louisiana, Inc. | | Oil Operator | Apr 2002 |
| 4836 | Verado Energy, Inc. | Allen, TX 75013 | Oil & Gas Operator | May 2025 |
| 4837 | Vermilion Bay Land Co. | | Oil & Gas Operator | Dec 1994 |
| 4838 | Vermilion Exploration, Inc. | | Oil & Gas Operator | Dec 1982 |
| 4839 | Vermilion Resources, Inc. | Houston, TX 77060 | Oil & Gas Operator | Sep 2009 |
| 4840 | Vermillion Energy & Dev. Corp. | | Oil & Gas Operator | Jul 1991 |
| 4841 | Vern Wilson Energy Inc. | | Oil & Gas Operator | Dec 2011 |
| 4842 | Verna Petroleum Company | | Oil & Gas Operator | Jun 1992 |
| 4843 | Vernon Bradford | | Oil Operator | Apr 1992 |
| 4844 | Vernon E. Faulconer | | Oil & Gas Operator | Dec 1996 |
| 4845 | Vernon E. Faulconer, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Dec 2024 |
| 4846 | Verona Energy, Inc. | | Oil & Gas Operator | Nov 2024 |
| 4847 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | May 2025 |
| 4848 | Vetra Exploration And Production LLC | | Oil & Gas Operator | Aug 2012 |
| 4849 | Vibe Resources LLC | | Oil & Gas Operator | Dec 2024 |
| 4850 | Victoria Land & Investment Co. | | Oil & Gas Operator | Jan 1985 |
| 4851 | Victory Financial Group, Inc. | Metairie, LA 70009 | Oil & Gas Operator | Sep 2002 |
| 4852 | Viking Oil Co. | | Oil & Gas Operator | Dec 1990 |
| 4853 | Viking Resources | | Oil & Gas Operator | Sep 1995 |
| 4854 | Vinbar Oil & Gas, LLC | | Oil & Gas Operator | Jan 2018 |
| 4855 | Vine Energy Operating LP | | Gas Operator | Oct 2021 |
| 4856 | Vine Oil & Gas LP | | Gas Operator | Apr 2021 |
| 4857 | Vintage Petroleum, Inc. | Houston, TX 77046 | Oil & Gas Operator | Feb 2025 |
| 4858 | Vinyard And Sons | | Oil & Gas Operator | Oct 2009 |
| 4859 | Virgil L. Pittman | | Oil & Gas Operator | Jun 1983 |
| 4860 | Virgin Offshore U.S.A., Inc. | | Oil & Gas Operator | Oct 2012 |
| 4861 | Virtex Petroleum Company, Inc. | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Jan 2008 |
| 4862 | Vision Natural Res-La, LLC | | Oil Operator | Dec 2024 |
| 4863 | Vista Corporation | | Oil & Gas Operator | Jan 2011 |
| 4864 | Vista Investments | | Gas Operator | Nov 1998 |
| 4865 | Vista Resources LLC | Teague, TX 75860 | Oil & Gas Operator | May 2025 |
| 4866 | Vistatex Energy LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2025 |
| 4867 | Vitol Resources Inc. Of Delaware | | Oil & Gas Operator | Jul 2016 |
| 4868 | Vivian Oil Partners, LLC | | Oil Operator | Jan 2025 |
| 4869 | Volvo Petroleum, Inc. | | Oil & Gas Operator | Jul 1984 |
| 4870 | Vonco Of Mississippi, Inc. | | Oil Operator | Mar 2025 |
| 4871 | Voyager Energy, LLC | | Oil & Gas Operator | Dec 2010 |
| 4872 | Vtex Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | May 2025 |
| 4873 | W & C Oil & Gas | | Oil Operator | Feb 1996 |
| 4874 | W & K Oil Co. | | Oil & Gas Operator | Jun 1989 |
| 4875 | W & L Oil Co. | | Oil Operator | Aug 1995 |
| 4876 | W & T Offshore, Inc. | Houston, TX 77057 | Oil & Gas Operator | May 2025 |
| 4877 | W & T Oil Properties, Inc. | | Oil & Gas Operator | Nov 1989 |
| 4878 | W B Powers Production Serv. | | Oil Operator | Feb 1991 |
| 4879 | W D L Enterprises, Inc | | Oil & Gas Operator | Apr 1983 |
| 4880 | W M Smith | | Oil Operator | Jun 1989 |
| 4881 | W&S Energy LLC | Woodward, OK 73801 | Oil & Gas Operator | Sep 2022 |
| 4882 | W&W Oil Co | Denver City, TX 79323 | Oil Operator | Jun 2002 |
| 4883 | W. A. Moncrief | | Oil & Gas Operator | Jun 2010 |
| 4884 | W. A. Moncrief, Jr. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 4885 | W. A. Parker | | Oil & Gas Operator | Jan 1981 |
| 4886 | W. A. Stanberry | | Oil & Gas Operator | Nov 1988 |
| 4887 | W. B. Inabnet | | Gas Operator | Oct 1985 |
| 4888 | W. B. Jayred | | Oil & Gas Operator | Aug 1982 |
| 4889 | W. B. McCarter, Jr., Inc. | | Oil & Gas Operator | Dec 1995 |
| 4890 | W. C. Allen | | Oil & Gas Operator | Dec 2024 |
| 4891 | W. C. Emmons | | Oil Operator | Jan 2025 |
| 4892 | W. D. Roberson | | Gas Operator | Mar 2021 |
| 4893 | W. D. Tarver | | Oil Operator | Aug 2005 |
| 4894 | W. E. O'Malley, Inc. | | Oil & Gas Operator | Jun 1991 |
| 4895 | W. E. Orr | | Oil & Gas Operator | Dec 2024 |
| 4896 | W. G. Darsey, III | | Oil & Gas Operator | Nov 1981 |
| 4897 | W. H. Beene | | Oil & Gas Operator | Jan 2025 |
| 4898 | W. H. Hunt | | Oil & Gas Operator | Jan 1984 |
| 4899 | W. H. Hunt, Et Al | | Oil & Gas Operator | Jul 1990 |
| 4900 | W. Harlan Beene | | Oil Operator | Jan 2025 |