Oil & Gas Companies in Sheridan County, MT
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Nance Petroleum Corporation | Billings, MT 59103-7168 | Oil & Gas Operator | Nov 2007 |
| 2 | Nearburg Producing Company | Dallas, TX 75380 | Oil & Gas Operator | Sep 2026 |
| 3 | Neptune Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Jun 2026 |
| 4 | Nexen Oil & Gas USA, Inc. | Calgary, AB T2P 5C1 | Oil & Gas Operator | Feb 2010 |
| 5 | Nielco, Inc. | Billings, MT 59103 | Oil & Gas Operator | Apr 2002 |
| 6 | Northern Oil Production, Inc. | Bozeman, MT 59718 | Oil & Gas Operator | Jun 2026 |
| 7 | Northstar Gas Company, Inc. | | Oil & Gas Operator | Jan 2016 |
Production numbers shown above are only for Sheridan County, MT and for the production period listed.