Oil & Gas Companies in Panola County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | O'Benco, Inc. | Shreveport, LA 71136 | Oil & Gas Operator | Oct 2025 |
| 2 | Ocean Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 3 | Odegard Energy, Inc. | Houston, TX 77024 | Oil & Gas Operator | Jul 2020 |
| 4 | Oklahoma RB Operating Company | Midland, TX 79701 | Oil & Gas Operator | Jan 1998 |
| 5 | Oleum Operating Company, L.C. | Longview, TX 75606 | Oil & Gas Operator | Dec 2021 |
| 6 | Omni Operating Company(A) | Dallas, TX 75370 | Oil & Gas Operator | Oct 2025 |
| 7 | Opex Energy, LLC | Houston, TX 77042 | Oil & Gas Operator | Mar 2008 |
| 8 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 9 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
Production numbers shown above are only for Panola County, TX and for the production period listed.