| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Natural Resource MGMT. Corp. | Oil & Gas Operator | Jun 1989 | |
| 2 | Needham Resources, Inc. | Oil & Gas Operator | Jan 1998 | |
| 3 | Nerco Oil & Gas, Inc. | Oil & Gas Operator | Dec 1996 | |
| 4 | Neuhoff Oil & Gas Corp. | Oil & Gas Operator | Dec 1986 | |
| 5 | Neumin Production Company | Point Comfort, TX 77978 | Oil & Gas Operator | Oct 2025 |
| 6 | Nexen Petroleum U.S.A. Inc. | Houston, TX 77024 | Oil & Gas Operator | Jul 2012 |
| 7 | Nomeco Oil & Gas Co. | Jackson, MI 49204 | Oil & Gas Operator | Dec 1994 |
| 8 | North Central Oil Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2005 |
| 9 | Northcoast Oil Company | Oil & Gas Operator | Mar 2009 | |
| 10 | Northern Michigan Expl Co | Oil & Gas Operator | Jul 1990 | |
| 11 | Northland Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Apr 2003 |