Oil & Gas Companies in Richland County, MT
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | R3 Operating Corporation | Denver, CO 80222 | Oil & Gas Operator | Dec 2025 |
| 2 | Ramhorn Energy, LLC | Green River, WY 82935 | Oil & Gas Operator | Sep 2025 |
| 3 | Ridge Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Sep 2025 |
| 4 | Rim Operating, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Dec 2025 |
| 5 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jun 2025 |
| 6 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
Production numbers shown above are only for Richland County, MT and for the production period listed.