| 1 | J D Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Jun 2005 |
| 2 | J O C Operating Inc | Fort Worth, TX 76102-6823 | Oil & Gas Operator | Feb 2021 |
| 3 | Jac-Mac Energy Corporation | Oklahoma City, OK 73170 | Oil & Gas Operator | Oct 2024 |
| 4 | Jaco, Troy Inc. | Sherman, TX 75091 | Oil & Gas Operator | Dec 2024 |
| 5 | Jai Oil | Lucien, OK 73757-9507 | Oil & Gas Operator | Sep 2024 |
| 6 | Jakmen Inc | Edmond, OK 73034-5313 | Oil & Gas Operator | Jun 2015 |
| 7 | Jan Oil Company | Oklahoma City, OK 73156 | Oil & Gas Operator | May 2006 |
| 8 | Jay Petroleum Inc | Oklahoma City, OK 73154-0526 | Oil & Gas Operator | Mar 2019 |
| 9 | Jec Operating LLC | Oklahoma City, OK 73114-2717 | Oil & Gas Operator | Sep 2024 |
| 10 | Jeffries Pumping Service Inc | Guthrie, OK 73044-8761 | Oil & Gas Operator | Sep 2024 |
| 11 | Jena Operating Company, Inc. | Dallas, TX 75367 | Oil & Gas Operator | May 2007 |
| 12 | Jet Oil Co12/Ofb See 18649 | | Oil & Gas Operator | Jul 2007 |
| 13 | Johnson Bates Drilling Co Inc | Konawa, OK 74849 | Oil & Gas Operator | Aug 2002 |
| 14 | Johnson Bill M Production Co | Perry, OK 73077-1238 | Oil & Gas Operator | Oct 2018 |
| 15 | Jones Loyd | Perryton, TX 79070-0931 | Oil Operator | Jan 2022 |
| 16 | Jones Loyd Well Serv Co Inc | Perryton, TX 79070 | Oil & Gas Operator | Dec 2005 |