| 1 | N Dale Nichols | Midland, TX 79703 | Oil & Gas Operator | Jun 2004 |
| 2 | Nadel And Gussman Heyco, LLC | Roswell, NM 88202 | Oil & Gas Operator | Dec 2014 |
| 3 | Nadel And Gussman Permian,L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 4 | National Energy Group, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 5 | Nearburg Producing Company | Dallas, TX 75380 | Oil & Gas Operator | Oct 2025 |
| 6 | New Horizon Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jun 2006 |
| 7 | Nordstrand Engineering Inc | Houston, TX 77019 | Oil & Gas Operator | Oct 2025 |
| 8 | North Fork Operating LP | Mustang, OK 73064 | Oil & Gas Operator | Oct 2025 |
| 9 | Northern Pacific Oil And Gas Incorporated | Houston, TX 77024 | Oil & Gas Operator | Dec 2022 |
| 10 | Northland Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Apr 2003 |
| 11 | Northstar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |