| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 2 | National Exploration Company | Oil & Gas Operator | Mar 1982 | |
| 3 | Natomas North America Inc | Oil & Gas Operator | Aug 1993 | |
| 4 | Neg Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Aug 2025 |
| 5 | Newhaven Operating Inc | Oil & Gas Operator | Dec 1998 | |
| 6 | Nicco Operating Co. | Oil & Gas Operator | May 1990 | |
| 7 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 8 | Nucorp Energy, Inc. | Oil & Gas Operator | Jan 1985 |