Oil & Gas Companies in Waller County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Sandalwood Exploration, L.P. | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 2 | Sandel Energy, Inc. | Huntsville, TX 77342 | Oil & Gas Operator | Apr 2004 |
| 3 | Sandel Operating Company | Huntsville, TX 77340 | Oil & Gas Operator | Oct 2025 |
| 4 | Seashore Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Oct 2025 |
| 5 | Senora Resources, Inc. | Dime Box, TX 77853 | Oil & Gas Operator | Oct 2025 |
| 6 | Shamrock Oil Co. | Sugar Land, TX 77478 | Oil & Gas Operator | Mar 2008 |
| 7 | Silverbrook Operating, LLC | Barker, TX 77413 | Oil Operator | Oct 2025 |
| 8 | Smith, L. C. | Jacksonville, TX 75766 | Oil & Gas Operator | Oct 2025 |
| 9 | Somerset Operating, LLC | Weatherford, TX 76086 | Gas Operator | Oct 2025 |
| 10 | Stanotex, LLC | Katy, TX 77494 | Oil & Gas Operator | Oct 2025 |
| 11 | Strand Energy, L.C. | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 12 | Sunray Operating Company LLC | Sugar Land, TX 77498 | Oil & Gas Operator | Nov 2024 |
| 13 | Synergy Oil & Gas, Inc. (A) | Houston, TX 77024 | Oil & Gas Operator | Aug 2001 |
Production numbers shown above are only for Waller County, TX and for the production period listed.