| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Nance Petroleum Corporation | Billings, MT 59103-7168 | Oil & Gas Operator | Nov 2007 |
| 2 | Navigation Powder River LLC | Houston, TX 77024 | Oil & Gas Operator | Aug 2025 |
| 3 | Nielson & Associates Inc | Cody, WY 82414 | Oil & Gas Operator | Feb 2016 |
| 4 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 5 | Nonsuch Natural Gas Inc | Naples, FL 34108 | Oil & Gas Operator | Jun 2025 |
| 6 | North Finn LLC | Casper, WY 82605 | Oil & Gas Operator | Aug 2025 |
| 7 | Northern Production Co | Gillette, WY 82717 | Oil & Gas Operator | Apr 2013 |
| 8 | Northwest Energy LLC | Buffalo, WY 82834 | Gas Operator | Jan 2010 |