Oil & Gas Companies in Grimes County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Halcon Operating Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 2 | Heisey Ventures, Inc. | Houston, TX 77019 | Oil & Gas Operator | Dec 2025 |
| 3 | Hep Oil Company, LTD. | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2012 |
| 4 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 5 | Hewitt, Robert J. | Victoria, TX 77901 | Oil & Gas Operator | Jun 2004 |
| 6 | High Chapparal Oil Company | Plntersville, TX 77363 | Oil & Gas Operator | Aug 2003 |
| 7 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Dec 2025 |
| 8 | HK Energy Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2023 |
| 9 | Holley Oil Company, LLC | Chappell Hill, TX 77426 | Oil & Gas Operator | Dec 2025 |
| 10 | Houston Gulf Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2025 |
| 11 | Houston Operating, Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
Production numbers shown above are only for Grimes County, TX and for the production period listed.