| 1 | J C Petroleum Inc | Chickasha, OK 73023-1433 | Oil & Gas Operator | Dec 2013 |
| 2 | Jac-Mac Energy Corporation | Oklahoma City, OK 73170 | Oil & Gas Operator | Jun 2025 |
| 3 | January Investments LLC | Norman, OK 73069-8224 | Oil & Gas Operator | Jul 2025 |
| 4 | Jenex Operating Company | The Woodlands, TX 77380-164280209 | Oil & Gas Operator | May 2019 |
| 5 | Jerry Sanner Oil Properties Inc | Enid, OK 73701 | Oil & Gas Operator | Jul 2025 |
| 6 | Jetta Operating Company Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 7 | JKB Resources LLC | Stigler, OK 74462 | Oil & Gas Operator | Jun 2025 |
| 8 | Jma Energy Company, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Jul 2025 |
| 9 | JNC Resources Company | Tulsa, OK 74119 | Gas Operator | May 1999 |
| 10 | Jo-Allyn Oil Co Inc | Laverne, OK 73848 | Oil & Gas Operator | Jul 2025 |
| 11 | Jones & Pellow Oil Co | Oklahoma City, OK 73118-1115 | Oil & Gas Operator | Feb 2015 |
| 12 | Jones, L. E. Production Co. | Duncan, OK 73534 | Oil & Gas Operator | Jul 2014 |
| 13 | JWD Oil & Gas LLC | Oklahoma City, OK 73116-9039 | Oil Operator | Jun 2025 |