Oil & Gas Companies in Waller County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Caskids Operating Company | Houston, TX 77027 | Oil & Gas Operator | Oct 2025 |
| 2 | Cavalier Oil & Gas, Inc. | Buchanan Dam, TX 78609 | Oil & Gas Operator | Oct 2025 |
| 3 | Century Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 4 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 5 | Chief Operating Company | Houston, TX 77070 | Oil & Gas Operator | Feb 2004 |
| 6 | Clearly Petroleum, LLC | Houston, TX 77086 | Oil & Gas Operator | Jun 2020 |
| 7 | Coastline Operating, L.L.C. | Houston, TX 77027 | Oil & Gas Operator | Dec 2006 |
| 8 | Coho Resources Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 2002 |
| 9 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
Production numbers shown above are only for Waller County, TX and for the production period listed.