Oil & Gas Companies in Calhoun County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Eex Corporation | Houston, TX 77060 | Oil & Gas Operator | Feb 2000 |
| 2 | Energy Development Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2025 |
| 3 | Enserch Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 4 | Erg Operating Company Inc | Houston, TX 77002 | Oil & Gas Operator | Dec 2006 |
| 5 | Erg Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2015 |
| 6 | Esenjay Exploration, Inc | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |
| 7 | Esenjay Petroleum Corp. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Jul 1998 |
| 8 | European-Southwest Co. | Houston, TX 77254 | Oil & Gas Operator | Jun 2026 |
| 9 | Express Oil Co. | Hallettsville, TX 77964 | Oil & Gas Operator | Jun 2026 |
| 10 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jan 2026 |
| 11 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Jun 2026 |
Production numbers shown above are only for Calhoun County, TX and for the production period listed.