Oil & Gas Companies in Grimes County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Magnetar Operating LLC | Houston, TX 77063 | Oil Operator | Sep 2026 |
| 2 | Magnolia Oil & Gas Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Sep 2026 |
| 3 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Jun 2026 |
| 4 | Marino, Charles B. | Tomball, TX 77377 | Oil & Gas Operator | Sep 2026 |
| 5 | Marlin Energy Resources, LLC | Lafayette, LA 70503 | Oil & Gas Operator | May 2018 |
| 6 | Marlin Energy Southwest GP, LLC | Lafayette, LA 70503 | Oil & Gas Operator | Sep 2026 |
| 7 | MD America Energy, LLC | Houston, TX 77224 | Oil & Gas Operator | Apr 2022 |
| 8 | Medallion Oil Company | Houston, TX 77251 | Oil & Gas Operator | Jan 2012 |
| 9 | Mego Resources, LLC | Taft, TX 78390 | Oil & Gas Operator | May 2026 |
| 10 | Milagro Exploration, LLC | Houston, TX 77010 | Oil & Gas Operator | Aug 2018 |
| 11 | Mna Enterprises LTD. Co. | Hobbs, NM 88242 | Oil & Gas Operator | Jan 2026 |
| 12 | Moncrief W A Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2026 |
| 13 | Moon Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Mar 2003 |
| 14 | Morris, W. Dale Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Sep 2026 |
| 15 | Moss Petroleum Company | Dallas, TX 75207 | Oil & Gas Operator | Sep 2026 |
Production numbers shown above are only for Grimes County, TX and for the production period listed.