| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Imperial Oil Company | Houston, TX 77073 | Oil & Gas Operator | Oct 2004 |
| 2 | Inexco Oil Company | Houston, TX 77210 | Oil & Gas Operator | Mar 2013 |
| 3 | Inland Gas Corp. | Houston, TX 77036 | Oil Operator | Dec 2011 |
| 4 | Inland Minerals Management, Inc. | Austin, TX 78701 | Oil & Gas Operator | Jun 2025 |
| 5 | Intercity Management Corp. | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Jun 2025 |
| 6 | Intercoast Oil And Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Jun 1997 |
| 7 | Ipact | Austin, TX 78734 | Oil & Gas Operator | Jun 2025 |
| 8 | Island Exploration | Houston, TX 77058 | Oil & Gas Operator | Jun 2025 |