Oil & Gas Companies in Roosevelt County, MT
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 2 | Samson Oil & Gas USA Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 2025 |
| 3 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 4 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 5 | Sinclair Oil & Gas Company | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Oct 2025 |
| 6 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2025 |
| 7 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Oct 2025 |
| 8 | St. Mary Land & Exploration Co | Denver, CO 80201 | Oil & Gas Operator | Jun 2010 |
| 9 | Stearns Oil Company LLC | Willison, ND 58801 | Oil & Gas Operator | Aug 2025 |
| 10 | Stratex Oil And Gas, Inc. | Watertown, CT 06795 | Oil & Gas Operator | Jun 2016 |
Production numbers shown above are only for Roosevelt County, MT and for the production period listed.