| 1 | Nadel And Gussman, L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2024 |
| 2 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jan 2024 |
| 3 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |
| 4 | Nbi Services, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Apr 2024 |
| 5 | Nelson Exploration Corporation | | Oil & Gas Operator | Jan 2024 |
| 6 | Nemaha Environmental Services LLC | Enid, OK 73703 | Oil Operator | Feb 2024 |
| 7 | Neok Production Company LLC | Nowata, OK 74048-0428 | Oil & Gas Operator | Jan 2024 |
| 8 | Nerco Oil & Gas, Inc. | | Oil & Gas Operator | Dec 1996 |
| 9 | New Dominion LLC | Tulsa, OK 74119-3220 | Oil & Gas Operator | Jan 2024 |
| 10 | Newell Oil And Gas LLC | Shawnee, OK 74801-5783 | Oil & Gas Operator | Jan 2024 |
| 11 | NFC Petroleum Corporation | Tulsa, OK 74121 | Oil & Gas Operator | Jun 1996 |
| 12 | Nichols Operating LLC | Fort Branch, IN 47648 | Oil & Gas Operator | Dec 2021 |
| 13 | Nielson & Associates Inc | Cody, WY 82414 | Oil & Gas Operator | Feb 2016 |
| 14 | NM&O Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 15 | Norman Kenneth W | Sasakwa, OK 74867-0086 | Oil Operator | Oct 2017 |
| 16 | Northbrook Oil & Gas Co LLC | Norman, OK 73072 | Oil & Gas Operator | Nov 2014 |
| 17 | Northbrook Oil & Gas Company | Norman, OK 73070-4916 | Oil & Gas Operator | Jun 2016 |
| 18 | Nye Oil Company | Oklahoma City, OK 73118-1245 | Oil & Gas Operator | Jun 2004 |