| 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 | Apr 2024 |
| 3 | Neptune Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2024 |
| 4 | Newfield Production Company | The Woodlands, TX 77380-2764 | Oil & Gas Operator | Jul 2022 |
| 5 | Nexen Oil And Gas U.S.A. Inc. | Calgary, AB T2P 5C1 | Oil & Gas Operator | Feb 2010 |
| 6 | Nielco, Inc. | Billings, MT 59103 | Oil & Gas Operator | Apr 2002 |
| 7 | Northern Oil Production, Inc. | Bozeman, MT 59718 | Oil & Gas Operator | Jan 2024 |
| 8 | Northstar Gas Company Inc | Oil & Gas Operator | Jan 2016 |