Oil & Gas Companies in Garfield County, MT
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Branch Oil & Gas | Shelby, MT 59474-0766 | Oil & Gas Operator | Jul 2010 |
| 2 | Branch, Jerry L. | | Oil & Gas Operator | Jul 1999 |
| 3 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Nov 2025 |
| 4 | Carrell Oil Company Dba Coco | Laurel, MT 59044 | Oil Operator | Jul 2020 |
| 5 | Cat Creek Holdings LLC | Winnett, MT 59087 | Oil Operator | Sep 2025 |
| 6 | Cirque Resources LP | Denver, CO 80202 | Oil & Gas Operator | Aug 2016 |
| 7 | Cline Production Company | Billings, MT 59104 | Oil & Gas Operator | Sep 2025 |
| 8 | Equity Oil Company | Salt Lake City, UT 84110-095 | Oil & Gas Operator | Aug 2004 |
| 9 | Grynberg, Jack J. | Denver, CO 80237 | Oil & Gas Operator | Jun 2021 |
| 10 | Phoenix Production Company | Cody, WY 82414-3607 | Oil & Gas Operator | Oct 2023 |
| 11 | R3 Operating Corporation | Denver, CO 80222 | Oil & Gas Operator | Nov 2025 |
| 12 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Nov 2025 |
| 13 | True Oil LLC | Casper, WY 82602 | Oil & Gas Operator | Sep 2025 |
| 14 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Nov 2025 |
| 15 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Nov 2025 |
| 16 | Woods, Pete Or Maxine | Chester, MT 59522 | Oil & Gas Operator | Jul 2025 |
Production numbers shown above are only for Garfield County, MT and for the production period listed.