Oil & Gas Companies in Washington County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Garrison LTD. | San Antonio, TX 78257 | Oil & Gas Operator | Feb 2026 |
| 2 | Gemarmi Inc. | Cypress, TX 77433 | Oil & Gas Operator | Feb 2026 |
| 3 | Gemini Exploration Company | Dallas, TX 75219 | Oil & Gas Operator | Mar 1997 |
| 4 | Geosouthern Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2026 |
| 5 | Geosouthern Operating II, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2026 |
| 6 | Goldsmith, J. Paul | Tyler, TX 75711 | Oil & Gas Operator | Feb 1997 |
| 7 | Grand Operating, Inc. | Addison, TX 75001 | Oil & Gas Operator | Nov 2025 |
| 8 | Great West Energy & Expl., Inc. | Addison, TX 75001 | Oil & Gas Operator | Mar 2008 |
| 9 | Griffin Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 10 | Gsi Oil & Gas, Inc. | Bryan, TX 77806 | Oil & Gas Operator | Feb 2026 |
Production numbers shown above are only for Washington County, TX and for the production period listed.