| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | I. W. McKnight,Production | Oil Operator | Jan 1986 | |
| 2 | Indian Exploration, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Oct 2025 |
| 3 | Indigo Haynesville LLC | Gas Operator | Feb 2018 | |
| 4 | Indigo Minerals LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 5 | Indigo Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2019 |
| 6 | Inland Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | May 2025 |
| 7 | Inpetco, Inc. | Oil & Gas Operator | Aug 1991 | |
| 8 | Investco Oil And Gas Inc | Oil & Gas Operator | Jan 2025 |