Oil & Gas Companies in Carter County, MT
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Armstrong Operating, Inc. | Dickinson, ND 58602 | Oil & Gas Operator | Aug 2025 |
| 2 | Beartooth Oil & Gas Company | Billings, MT 59103 | Oil & Gas Operator | Aug 2025 |
| 3 | Blackstone Operating | Red Lodge, MT 59068 | Gas Operator | Dec 2006 |
| 4 | Denbury Onshore, LLC | Plano, TX 75024 | Oil & Gas Operator | Oct 2025 |
| 5 | Encore Operating LP | Plano, TX 75024 | Oil & Gas Operator | May 2025 |
| 6 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 7 | Fidelity Exploration & Production Company | Denver, CO 80203 | Oil & Gas Operator | Sep 2025 |
| 8 | Georesources, Inc. | Williston, ND 58802-1505 | Oil & Gas Operator | Dec 2014 |
| 9 | Nadel And Gussman Rockies, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2012 |
| 10 | Remuda Energy Development LLC | Billings, MT 59104 | Oil & Gas Operator | Aug 2025 |
| 11 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Jul 2025 |
| 12 | Sands Oil Company Inc | Billings, MT 59103 | Oil & Gas Operator | Jul 2025 |
| 13 | True Oil LLC | Casper, WY 82602 | Oil & Gas Operator | Aug 2025 |
Production numbers shown above are only for Carter County, MT and for the production period listed.