| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Uhc Petroleum Corporation | Rocksprings, TX 78880 | Oil & Gas Operator | Oct 2025 |
| 2 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 3 | Union Pacific Resources Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Sep 2002 |
| 4 | Uosi Operating, Inc. | Lovelady, TX 75851 | Oil & Gas Operator | Oct 2025 |
| 5 | Ursus Oil And Gas | Tyler, TX 75703 | Oil & Gas Operator | Oct 2025 |