| 1 | J O C Operating Inc | Fort Worth, TX 76102-6823 | Oil & Gas Operator | Feb 2021 |
| 2 | J O MC Oil & Gas Inc | Maud, OK 74854 | Oil & Gas Operator | Apr 1999 |
| 3 | Jac-Mac Energy Corporation | Oklahoma City, OK 73170 | Oil & Gas Operator | Feb 2024 |
| 4 | James Larry | Guthrie, OK 73044-9622 | Oil & Gas Operator | Jan 2024 |
| 5 | James Lawrence E Estate Of | Crescent, OK 73028-9304 | Oil & Gas Operator | Nov 2021 |
| 6 | Jan Oil Company | Oklahoma City, OK 73156 | Oil & Gas Operator | May 2006 |
| 7 | Jay Petroleum Inc | Oklahoma City, OK 73154-0526 | Oil & Gas Operator | Mar 2019 |
| 8 | JCN Petroleum Corporation | Edmond, OK 73083-3357 | Oil & Gas Operator | Jun 2004 |
| 9 | Jec Operating LLC | Oklahoma City, OK 73114-2717 | Oil & Gas Operator | Jan 2024 |
| 10 | Jefferson Co LLC (The) | Corinth, TX 76205 | Oil & Gas Operator | Aug 2004 |
| 11 | Jeffries Pumping Service Inc | Guthrie, OK 73044-8761 | Oil & Gas Operator | Jan 2024 |
| 12 | Jenkins Petroleum Inc | Stillwater, OK 74076 | Oil & Gas Operator | Mar 1994 |
| 13 | Jet Oil Co12/Ofb See 18649 | | Oil & Gas Operator | Jul 2007 |
| 14 | Jimgas Inc | Magnolia, TX 77355 | Oil & Gas Operator | May 2016 |
| 15 | Johnson Doyle T | Oklahoma City, OK 73118-1007 | Oil & Gas Operator | Jan 2013 |
| 16 | Johnson Exploration Company | Oklahoma City, OK 73102-7008 | Oil & Gas Operator | Jun 2015 |
| 17 | Jones & Pellow Oil Co | Oklahoma City, OK 73118-1115 | Oil & Gas Operator | Feb 2015 |
| 18 | Jones Tank Trucks Inc | Cushing, OK 74023-8947 | Oil & Gas Operator | Dec 2000 |
| 19 | Jrhop Inc | Norman, OK 73072-4615 | Oil & Gas Operator | Dec 2015 |
| 20 | Juno Operating Company II LLC | Plano, TX 75093 | Oil & Gas Operator | Sep 2018 |