| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | U. D. Man, Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Mar 2025 |
| 2 | U.S.A. Plugging Company | Pearsall, TX 78061 | Oil & Gas Operator | Mar 2025 |
| 3 | United Oil & Minerals, Inc. | Austin, TX 78746 | Oil & Gas Operator | Jan 2001 |
| 4 | United Texas Petroleum Inc. | McKinney, TX 75070 | Oil & Gas Operator | Mar 2025 |