| 1 | J & S Of Enid Inc | Enid, OK 73701 | Oil & Gas Operator | Jul 2019 |
| 2 | J & T Operating Inc | Norman, OK 73070-1736 | Oil & Gas Operator | Feb 2012 |
| 3 | J L Hajek Enterprises LLC | Ames, OK 73718 | Oil & Gas Operator | Nov 2025 |
| 4 | J O C Operating Inc | Fort Worth, TX 76102-6823 | Oil & Gas Operator | Feb 2021 |
| 5 | J O MC Oil & Gas Inc | Maud, OK 74854 | Oil & Gas Operator | Apr 1999 |
| 6 | Jaco, Troy Inc. | Sherman, TX 75091 | Oil & Gas Operator | Jul 2026 |
| 7 | James Clarence E | Guthrie, OK 73044-9713 | Oil & Gas Operator | Apr 2026 |
| 8 | James Larry | Guthrie, OK 73044-9622 | Oil & Gas Operator | Apr 2026 |
| 9 | James Lawrence E Estate Of | Crescent, OK 73028-9304 | Oil & Gas Operator | Nov 2021 |
| 10 | January Investments LLC | Norman, OK 73069-8224 | Oil & Gas Operator | Apr 2026 |
| 11 | Jay Petroleum Inc | Oklahoma City, OK 73154-0526 | Oil & Gas Operator | Mar 2019 |
| 12 | Jayhawk Mineral Investments LLC | Edmond, OK 73034-8874 | Oil & Gas Operator | Apr 2026 |
| 13 | Jec Operating LLC | Oklahoma City, OK 73114-2717 | Oil & Gas Operator | Apr 2026 |
| 14 | Jegeroil Corp | New York, NY 10036 | Oil & Gas Operator | Aug 2000 |
| 15 | Jerry Sanner Oil Properties Inc | Enid, OK 73701 | Oil & Gas Operator | May 2026 |
| 16 | Jet Oil Co12/Ofb See 18649 | | Oil & Gas Operator | Jul 2007 |
| 17 | Jhatco Inc | Enid, OK 73701 | Oil & Gas Operator | May 2026 |
| 18 | JKB Resources LLC | Stigler, OK 74462 | Oil & Gas Operator | May 2026 |
| 19 | JMK Energy Company | Hennessey, OK 73742-0518 | Oil & Gas Operator | Jun 2016 |
| 20 | JN Production LLP | Guthrie, OK 73028 | Oil & Gas Operator | Apr 2026 |
| 21 | Johnson E Lyle | Oklahoma City, OK 73142 | Oil & Gas Operator | Apr 2026 |
| 22 | Johnson Exploration Company | Oklahoma City, OK 73102-7008 | Oil & Gas Operator | Jun 2015 |
| 23 | Johnson Oil Company | Duncan, OK 73533 | Oil Operator | Apr 2026 |
| 24 | Jojon Petroleum Company | Dallas, TX 75219 | Oil & Gas Operator | Apr 2026 |
| 25 | Jordan Oil & Gas Company | Healdsburg, CA 95448-1919 | Oil & Gas Operator | Mar 1995 |
| 26 | Jrhop Inc | Norman, OK 73072-4615 | Oil & Gas Operator | Dec 2015 |