Oil & Gas Companies in Harris County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | O'Sand Production, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Aug 2003 |
| 2 | Ocean Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 3 | Oil Lease Operating Co. | Coldspring, TX 77331 | Oil & Gas Operator | Aug 2003 |
| 4 | Oklatex Energy, Inc. | Beaumont, TX 77702 | Oil Operator | Mar 2025 |
| 5 | Opex Energy, LLC | Houston, TX 77042 | Oil & Gas Operator | Mar 2008 |
| 6 | Opmi Operating Company | Houston, TX 77057 | Oil & Gas Operator | Jun 2008 |
| 7 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 8 | Osborn,W.B. Oil & Gas Operations | San Antonio, TX 78217 | Oil & Gas Operator | Mar 2025 |
| 9 | Otex Resources LLC | Baytown, TX 77520 | Oil & Gas Operator | Mar 2025 |
| 10 | Outline Oil Corp. | San Antonio, TX 78217 | Oil & Gas Operator | Mar 2025 |
| 11 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Mar 2025 |
Production numbers shown above are only for Harris County, TX and for the production period listed.