Oil & Gas Companies in Duval County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | U.S. Enercorp, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Jul 2004 |
| 2 | U.S. Enercorp, LTD. | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2019 |
| 3 | U.S. Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 4 | Ultra Oil & Gas, Inc. | Centerton, AR 72719 | Oil & Gas Operator | Nov 2024 |
| 5 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 6 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2024 |
| 7 | United Operating, LLC *** | Midland, TX 79710 | Oil & Gas Operator | Nov 2024 |
| 8 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Nov 2024 |
| 9 | Uvalde Energy Co. | Austin, TX 78747 | Oil & Gas Operator | Nov 1994 |
Production numbers shown above are only for Duval County, TX and for the production period listed.