| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Icor Oil & Gas Of Okla LTD | Claremore, OK 74018-2132 | Oil & Gas Operator | Mar 2015 |
| 2 | Indian Nation Energy Company | Wewoka, OK 74884-3456 | Oil & Gas Operator | Apr 2020 |
| 3 | Inland Oil Corporation | Sapulpa, OK 74067 | Oil & Gas Operator | Jul 2025 |
| 4 | Inland Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | May 2025 |
| 5 | Integrated Energy Service Corp | Cleveland, OK 74020 | Oil & Gas Operator | Nov 1998 |