| 1 | Naifco Oil & Gas LLC | Oklahoma City, OK 73107-0467 | Oil & Gas Operator | Jan 2024 |
| 2 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 3 | Natomas North America Inc | | Oil & Gas Operator | Aug 1993 |
| 4 | Natural Progression Oil & Gas Corp | Stillwater, OK 74076-1843 | Oil & Gas Operator | Feb 2024 |
| 5 | Nbi Services, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Apr 2024 |
| 6 | Nelson Exploration Corporation | | Oil & Gas Operator | Jan 2024 |
| 7 | Nemaha Environmental Services LLC | Enid, OK 73703 | Oil Operator | Feb 2024 |
| 8 | Nerco Oil & Gas, Inc. | | Oil & Gas Operator | Dec 1996 |
| 9 | New Century Petroleum Corp | Oklahoma City, OK 73105 | Oil & Gas Operator | May 2013 |
| 10 | New Dominion LLC | Tulsa, OK 74119-3220 | Oil & Gas Operator | Jan 2024 |
| 11 | New Energy Corporation | Rancho Santa Fe, CA 92067-1990 | Oil & Gas Operator | Jan 2024 |
| 12 | Nexus Resources Corporation | Drumright, OK 74030 | Oil & Gas Operator | Jan 2013 |
| 13 | NGL Crude Logistics LLC | Denver, CO 80220 | Oil Operator | Dec 2023 |
| 14 | NHH Inc | Oklahoma City, OK 73162-7418 | Oil & Gas Operator | Feb 2002 |
| 15 | Nivens Productions LLC | Coyle, OK 73027-9785 | Oil & Gas Operator | Mar 2023 |
| 16 | NM&O Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 17 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 18 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Apr 2024 |
| 19 | Nogp Operating Company LLC | | Oil & Gas Operator | Jan 2024 |
| 20 | Nondorf Oil & Gas Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2008 |