| 1 | N & N Oil LLC | Velma, OK 73491-0521 | Oil & Gas Operator | May 2023 |
| 2 | Naro Oil Corporation | Dallas, TX 75230-1986 | Oil & Gas Operator | Nov 2003 |
| 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 | May 2024 |
| 5 | Nelco Oil & Gas | Duncan, OK 73533-1516 | Oil & Gas Operator | Oct 2015 |
| 6 | Nelson Exploration Corporation | | Oil & Gas Operator | Jan 2024 |
| 7 | Nemaha Environmental Services LLC | Enid, OK 73703 | Oil Operator | Feb 2024 |
| 8 | Newpek, LLC | Irving, TX 75039 | Oil & Gas Operator | Sep 2016 |
| 9 | Nichols, Irl. A. Trust B | Duncan, OK 73534 | Oil & Gas Operator | Sep 2000 |
| 10 | Nitro Petroleum Inc | Phoenix, AZ 85016-4599 | Oil & Gas Operator | May 2020 |
| 11 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | May 2024 |
| 12 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | May 2024 |
| 13 | Nooner Cynthia | Ratliff City, OK 73481-9501 | Oil Operator | Dec 2023 |
| 14 | Nordstrand Engineering Inc | Houston, TX 77019 | Oil & Gas Operator | May 2024 |
| 15 | North American Energy Inc | Duncan, OK 73533-9604 | Oil & Gas Operator | Nov 2000 |
| 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 | Nossaman E Oil Inc | Del City, OK 73155-5449 | Oil Operator | Oct 2002 |
| 19 | Nub'S Well Servicing Inc | Fox, OK 73435-0206 | Oil & Gas Operator | Feb 2024 |
| 20 | Nutt Jerrie | Duncan, OK 73534-0698 | Oil & Gas Operator | Nov 2016 |