| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 2 | Underwood Oil And Gas LLC | Chandler, OK 74834-1414 | Oil & Gas Operator | Mar 2026 |
| 3 | Union Valley Petroleum Corp | Enid, OK 73701 | Oil & Gas Operator | Mar 2026 |
| 4 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Jun 2026 |
| 5 | Uplands Resources Inc | Tulsa, OK 74103-4141 | Oil & Gas Operator | Mar 2026 |
| 6 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Jun 2026 |