| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | National Offshore LP | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2008 |
| 2 | Nerco Oil & Gas, Inc. | Oil & Gas Operator | Dec 1996 | |
| 3 | Newfield Exploration Company | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2017 |
| 4 | Nippon Oil Exploration USA LTD | Oil & Gas Operator | Dec 2010 | |
| 5 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 6 | Noex, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Apr 1998 |
| 7 | North Central Oil Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2005 |
| 8 | Northcoast Oil Company | Oil & Gas Operator | Mar 2009 |