| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Nance Petroleum Corporation | Billings, MT 59103-7168 | Oil & Gas Operator | Nov 2007 |
| 2 | Natural Gas Processing Company | Worland, WY 82401 | Oil & Gas Operator | Feb 2025 |
| 3 | Newfield Production Company | The Woodlands, TX 77380-2764 | Oil & Gas Operator | Jul 2022 |
| 4 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Mar 2025 |
| 5 | Nortex Gas & Oil Co | Tulsa, OK 74135 | Oil & Gas Operator | Sep 1993 |
| 6 | North American Energy | Oil & Gas Operator | Feb 1986 | |
| 7 | Northstar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 8 | Northwest Exploration | Oil & Gas Operator | Dec 1984 | |
| 9 | Nova Energy Inc | Casper, WY 82601 | Oil & Gas Operator | Oct 2020 |
| 10 | Nova Petroleum Cororation | Oil & Gas Operator | Mar 1987 |