201 | Ursa Major (Crow Og), LLC | Billings, MT 59101 | Gas Operator | Aug 2017 |
202 | Ursa Operating Company LLC | Denver, CO 80265 | Oil & Gas Operator | Dec 2020 |
203 | Ursus Oil And Gas | Tyler, TX 75703 | Oil & Gas Operator | Nov 2024 |
204 | Us Ecology Winnie, LLC | Winnie, TX 77665 | Oil Operator | Nov 2024 |
205 | Us Energy Corp. | Houston, TX 77057 | Oil & Gas Operator | Dec 2021 |
206 | Us Energy Dev Corp | Getzville, NY 14068-1558 | Oil & Gas Operator | Dec 2021 |
207 | Us Energy Exploration Corp | Rural Valley, PA 16249 | Oil & Gas Operator | Jul 2024 |
208 | Us Energy Holdings, LLC | Richardson, TX 75080 | Oil & Gas Operator | Nov 2024 |
209 | Us Energy Oh LLC | Rural Valley, PA 16249 | Oil & Gas Operator | Dec 2023 |
210 | Us Gypsum Co | Oakfield, NY 14125-9722 | Gas Operator | Dec 2005 |
211 | Us Liquids Of La, LTD | | Oil Operator | Jul 2002 |
212 | Us Oil & Gas Inc | Marietta, OH 45750 | Oil & Gas Operator | Sep 2024 |
213 | Us Oil Resources LLC | Lakewood, CO 80123 | Oil Operator | Jul 2024 |
214 | Us Ore Corporation | Pacific Beach, CA 92109 | Oil Operator | Feb 2014 |
215 | Us Petro LP | Amarillo, TX 79106 | Oil & Gas Operator | Apr 2020 |
216 | Us. Fuels, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
217 | USA Energy LLC | Lance Creek, WY 82222 | Oil & Gas Operator | Jul 2024 |
218 | USA Exploration & Production LLC | Mills, WY 82644 | Oil & Gas Operator | Sep 2012 |
219 | USA Superior Energy LLC | Houston, TX 77077 | Oil Operator | Mar 2010 |
220 | USA Tubulars, Inc. | Valley Spring, TX 76885 | Oil & Gas Operator | Dec 1995 |
221 | Uscan Oil Inc | Oil City, PA 16301-1412 | Oil & Gas Operator | Dec 1991 |
222 | Usedc Okc LLC | Getzville, NY 14068-1296 | Oil & Gas Operator | May 2018 |
223 | Usfg Oil & Gas, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Dec 2005 |
224 | Usins Oil Compan | | Oil Operator | Jan 1993 |
225 | Usx Operating Co., Inc. | Barnstall, OK 74002 | Oil & Gas Operator | Apr 2017 |
226 | Utah Gas Op LTD | Rangely, CO 81648 | Oil & Gas Operator | Aug 2024 |
227 | Utah Oil LLC | Rantoul, KS 66079 | Oil Operator | Jul 2024 |
228 | Utah-Westar DRL Ventures | Dallas, TX 75201 | Oil & Gas Operator | Nov 1987 |
229 | Ute Energy Upstream Holdings LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2012 |
230 | Utex Oil Company | Elko, NV 89803 | Oil & Gas Operator | Dec 1988 |
231 | Utica Resource Operating LLC | Marietta, OH 45750 | Oil & Gas Operator | Sep 2023 |
232 | Utility Ventures Company | Pasadena, TX 77504 | Oil & Gas Operator | Nov 2024 |
233 | Utoco, LTD. | Midland, TX 79704 | Oil Operator | Nov 2024 |
234 | Uvalde Energy Co. | Austin, TX 78747 | Oil & Gas Operator | Nov 1994 |