| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Imperial Petroleum, Inc. | Evansville, IN 47725 | Oil & Gas Operator | Jan 2005 |
| 2 | Indian Wells Oil Co | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2000 |
| 3 | Indrex Inc | Tulsa, OK 74133 | Oil & Gas Operator | Dec 2000 |
| 4 | Inland Oil Corporation | Sapulpa, OK 74067-0943 | Oil & Gas Operator | Jan 2024 |
| 5 | Internorth Inc | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2014 |
| 6 | Investment Operating Co | Stillwater, OK 74075-8572 | Oil Operator | Jan 2024 |
| 7 | Iron Sights Operating Inc | Stillwater, OK 74076 | Oil & Gas Operator | Jul 2022 |