| 31101 | USA Energy LLC | Lance Creek, WY 82222 | Oil & Gas Operator | Nov 2024 |
| 31102 | USA Exploration & Production LLC | Mills, WY 82644 | Oil & Gas Operator | Sep 2012 |
| 31103 | USA Superior Energy LLC | Houston, TX 77077 | Oil Operator | Mar 2010 |
| 31104 | USA Tubulars, Inc. | Valley Spring, TX 76885 | Oil & Gas Operator | Dec 1995 |
| 31105 | Uscan Oil Inc | Oil City, PA 16301-1412 | Oil & Gas Operator | Dec 1991 |
| 31106 | Usedc Okc LLC | Getzville, NY 14068-1296 | Oil & Gas Operator | May 2018 |
| 31107 | Usfg Oil & Gas, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Dec 2005 |
| 31108 | Usins Oil Compan | | Oil Operator | Jan 1993 |
| 31109 | Usoil Corporation | | Oil & Gas Operator | Nov 1998 |
| 31110 | Usx Operating Co., Inc. | Barnstall, OK 74002 | Oil & Gas Operator | Apr 2017 |
| 31111 | Utah Gas Op LTD | Rangely, CO 81648 | Oil & Gas Operator | Feb 2025 |
| 31112 | Utah Oil LLC | Rantoul, KS 66079 | Oil Operator | Dec 2024 |
| 31113 | Utah-Westar DRL Ventures | Dallas, TX 75201 | Oil & Gas Operator | Nov 1987 |
| 31114 | Ute Energy Upstream Holdings LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2012 |
| 31115 | Utex Oil Company | Elko, NV 89803 | Oil & Gas Operator | Dec 1988 |
| 31116 | Utica Resource Operating LLC | Marietta, OH 45750 | Oil & Gas Operator | Sep 2023 |
| 31117 | Utility Ventures Company | Pasadena, TX 77504 | Oil & Gas Operator | Apr 2025 |
| 31118 | Utoco, LTD. | Midland, TX 79704 | Oil Operator | Apr 2025 |
| 31119 | Uvalde Energy Co. | Austin, TX 78747 | Oil & Gas Operator | Nov 1994 |
| 31120 | V & F Oil Company, A General Partnership | Hays, KS 67601 | Oil Operator | Dec 2024 |
| 31121 | V & H Oil, L.P. | Muenster, TX 76252 | Oil & Gas Operator | Apr 2025 |
| 31122 | V & R Oil | | Oil Operator | Dec 2024 |
| 31123 | V & R Production, Inc | La Plata, NM 87418 | Oil & Gas Operator | Oct 2006 |
| 31124 | V A B Inc | Weleetka, OK 74880 | Oil & Gas Operator | Jan 2007 |
| 31125 | V A Resources LLC | Casper, WY 82601 | Oil Operator | Apr 2016 |
| 31126 | V C P Michigan, LLC | | Oil & Gas Operator | Feb 2025 |
| 31127 | V L Pittman PC & Producer, Inc | | Oil & Gas Operator | Jul 1989 |
| 31128 | V S Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Apr 2025 |
| 31129 | V-F Petroleum Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 31130 | V. E. Karnes | | Oil Operator | Jun 1989 |
| 31131 | V. Francis Weigel Family Partnership LLC | Gorham, KS 67640 | Oil Operator | Dec 2024 |
| 31132 | V. H. Brumley | | Oil Operator | Jul 1994 |
| 31133 | V. Monta Currie, Jr. | | Oil Operator | Jun 2007 |
| 31134 | V. R. Oil Co. | | Oil Operator | Dec 2024 |
| 31135 | V/J Oil Company | Yancey, TX 78886 | Oil & Gas Operator | Oct 2015 |
| 31136 | Vaalco Energy (USA), Inc. | Houston, TX 77042 | Oil & Gas Operator | Dec 2016 |
| 31137 | Vac Petroleum Co | | Oil Operator | Dec 1990 |
| 31138 | Vac-U-Lift Production Co.,Inc. | Lake Forest, CA 92630 | Oil & Gas Operator | Apr 2025 |
| 31139 | Vaca Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 31140 | Vaca Operating Company LLC | Pacific PLSDS, CA 90272 | Oil & Gas Operator | Aug 2017 |
| 31141 | Vaco Oil Company | Cleveland, OK 74020 | Oil & Gas Operator | Jun 2003 |
| 31142 | Vail Energy/Enma | | Oil Operator | Oct 1987 |
| 31143 | Val Energy, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2024 |
| 31144 | Valancy Operating LLC | Goldsby, OK 73093 | Oil & Gas Operator | Feb 2025 |
| 31145 | Valar Petroleum Inc | Houston, TX 77069 | Oil & Gas Operator | May 2006 |
| 31146 | Vale Petroleum Corporation | Houston, TX 77042 | Gas Operator | Jan 1995 |
| 31147 | Valence Operating Company | Kingwood, TX 77339 | Oil & Gas Operator | Apr 2025 |
| 31148 | Valentine Oil & Gas, L.C. | Carmine, TX 78932 | Oil Operator | Nov 2018 |
| 31149 | Valentine Oil Properties | Lowell, OH 45744 | Oil & Gas Operator | Dec 1997 |
| 31150 | Valera Oil Company | Kingsland, TX 78639 | Oil & Gas Operator | Apr 2000 |
| 31151 | Valerius, Inc. & Zine, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Jul 1994 |
| 31152 | Valerius, Robert D. Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Aug 2003 |
| 31153 | Valero Marketing & Supply Co | San Antonio, TX 78269-6000 | Oil & Gas Operator | Sep 2023 |
| 31154 | Valero Producing Company | | Oil Operator | Sep 1987 |
| 31155 | Valiant Oil & Inv Co | | Oil & Gas Operator | Jan 2025 |
| 31156 | Valid Energy Company | | Oil & Gas Operator | Dec 2024 |
| 31157 | Validus Energy II Midcon LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 31158 | Validus NRG Aquilas Assetco LLC | Denver, CO 80202 | Oil & Gas Operator | Nov 2022 |
| 31159 | Validus Operating Inc. | Port Aransas, TX 78373 | Oil & Gas Operator | Oct 1998 |
| 31160 | Valjohn Energy Corporation | Oklahoma City, OK 73142-6090 | Oil & Gas Operator | Jan 2025 |
| 31161 | Valkyrie Operating LLC | Denver, CO 80202 | Oil & Gas Operator | Mar 2025 |
| 31162 | Valla Energy Corporation | Odessa, TX 79762 | Oil & Gas Operator | Aug 2003 |
| 31163 | Vallecito Gas L.L.C. | Farmington, NM 87499 | Oil Operator | May 2012 |
| 31164 | Valley Energy Expl. | | Oil & Gas Operator | Dec 1984 |
| 31165 | Valley Energy Resources Inc. | | Oil & Gas Operator | Dec 2006 |
| 31166 | Valley Enterprises | New Concord, OH 43762 | Oil & Gas Operator | Dec 2001 |
| 31167 | Valley Gathering Company | Midland, TX 79702 | Oil & Gas Operator | Feb 1997 |
| 31168 | Valley Oil & Gas Inc | | Oil & Gas Operator | Nov 2013 |
| 31169 | Valley Operating Inc | Denver, CO 80218-3633 | Oil & Gas Operator | Jan 2004 |
| 31170 | Valley Petrochemicals, LLC | Pharr, TX 78577 | Oil Operator | Apr 2025 |
| 31171 | Valley Petrol Consulting Inc | Denton, TX 76205 | Oil Operator | Jan 2025 |
| 31172 | Valley Petroleum Company | Abilene, TX 79608 | Oil & Gas Operator | Apr 2025 |
| 31173 | Valley Petroleum Management | Utica, OH 43080 | Oil & Gas Operator | Dec 2024 |
| 31174 | Valley Resources, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Aug 2003 |
| 31175 | Valor Energy, LLC | Dallas, TX 75205 | Oil & Gas Operator | May 2023 |
| 31176 | Valpoint Operating, LLC | Amarillo, TX 79101 | Oil & Gas Operator | Apr 2025 |
| 31177 | Vamco Operations | | Oil & Gas Operator | Dec 2024 |
| 31178 | Vamos Oil & Gas, LLC | Miami, FL 33129 | Oil & Gas Operator | Apr 2025 |
| 31179 | Van Buskirk Bill | | Oil Operator | Dec 1996 |
| 31180 | Van Buskirk, Billy L. | Severy, KS 67137 | Oil Operator | Dec 2009 |
| 31181 | Van Dall, Don | | Oil Operator | Mar 2015 |
| 31182 | Van Hampton Gas & Oil Co Inc | Pleasantville, PA 16341-0329 | Gas Operator | Dec 2020 |
| 31183 | Van Horn I H | Tulsa, OK 74145-5715 | Oil & Gas Operator | Mar 2001 |
| 31184 | Van Horn Oil & Gas Inc | Tulsa, OK 74170 | Oil & Gas Operator | Nov 1998 |
| 31185 | Van Horn Oil Company | Ada, OK 74820 | Oil & Gas Operator | Oct 1999 |
| 31186 | Van Lingen, Peter | Nashville, TN 37215 | Oil Operator | Dec 2023 |
| 31187 | Van Norman Pipe And Supply | | Oil & Gas Operator | Mar 2010 |
| 31188 | Van Oil Co Inc | Fort Worth, TX 76116 | Oil Operator | Dec 1997 |
| 31189 | Van Oil, Inc | Madison, KS 66860 | Oil & Gas Operator | Oct 2024 |
| 31190 | Van Operating, LTD. | Albany, TX 76430 | Oil & Gas Operator | Apr 2025 |
| 31191 | Van Orsdol Paul | Bristow, OK 74010 | Oil & Gas Operator | Feb 2025 |
| 31192 | Van Tol Oil | Sanger, TX 76266 | Oil & Gas Operator | Apr 2025 |
| 31193 | Van Winkle Oil | Floresville, TX 78114 | Oil & Gas Operator | Apr 2025 |
| 31194 | Van Zandt Marilyn | Depew, OK 74028 | Gas Operator | Jan 2025 |
| 31195 | Van Zanten, Inc. | | Gas Operator | Jan 1990 |
| 31196 | Vanbelois Russell Inc | | Oil & Gas Operator | Apr 2000 |
| 31197 | Vanco Oil & Gas Corp. | Abilene, TX 79604 | Oil & Gas Operator | Apr 2025 |
| 31198 | Vancol Oil Co Inc | Ponca City, OK 74602-0030 | Oil & Gas Operator | May 2018 |
| 31199 | Vanderbilt Resources Corp. | Midland, TX 79701 | Oil & Gas Operator | Nov 1991 |
| 31200 | Vanderhoof Energy Prod LLC | Russell, PA 16345 | Oil & Gas Operator | Dec 2024 |