| 1 | Ibex Resources Operating LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2007 |
| 2 | Ibex Resources, LLC | Austin, TX 78751 | Oil & Gas Operator | Jul 1999 |
| 3 | Ica Energy Operating, L.L.C. | Odessa, TX 79760 | Oil & Gas Operator | Dec 2024 |
| 4 | Imperial Gas Resources LLC | Austin, TX 78701 | Oil & Gas Operator | Dec 2024 |
| 5 | Imperial Oil Company | Houston, TX 77073 | Oil & Gas Operator | Oct 2004 |
| 6 | Imperial Operating Co., L.L.C. | Midland, TX 79701 | Oil Operator | Sep 2023 |
| 7 | Incline Energy | Midland, TX 79710 | Oil & Gas Operator | Dec 2024 |
| 8 | Independence Resources MGMT, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Mar 2021 |
| 9 | Infinity Hydrocarbons LLC | Houston, TX 77079 | Oil & Gas Operator | Aug 2022 |
| 10 | Ip Petroleum Company, Inc. | Houston, TX 77210 | Oil & Gas Operator | Mar 2008 |
| 11 | Ipt Oil Company | Evansville, IN 47706 | Oil & Gas Operator | Dec 2024 |
| 12 | Iskandia Energy Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |