Oil & Gas Companies in Ellis County, OK
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 2 | Unbridled Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 3 | Unit Drilling & Exploration Co | Tulsa, OK 74132-5300 | Oil & Gas Operator | Apr 2025 |
| 4 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2025 |
| 5 | United Oil Corporation | Denver, CO 80202-3813 | Oil & Gas Operator | Jun 2025 |
| 6 | Upland Operating, LLC | Dallas, TX 75226 | Oil & Gas Operator | Oct 2025 |
| 7 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Oct 2025 |
Production numbers shown above are only for Ellis County, OK and for the production period listed.