| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | N-B Company Inco | Oil & Gas Operator | Apr 1992 | |
| 2 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 3 | National Develop | Oil & Gas Operator | Jan 1990 | |
| 4 | Nichols Oil Corp. | Holcomb, KS 67846 | Oil Operator | Dec 1994 |
| 5 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Jun 2025 |
| 6 | North American D | Oil & Gas Operator | Sep 1986 | |
| 7 | North American Drilling & Exploration, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Aug 2015 |
| 8 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Jun 2025 |