| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 101 | Wilcox Oil Company | Rule, TX 79547 | Oil & Gas Operator | Aug 2008 |
| 102 | Wilcox Petroleum Operating LLC. | Rule, TX 79547 | Oil & Gas Operator | Feb 2026 |
| 103 | Wild Horse Energy | Paducah, TX 79248 | Oil & Gas Operator | Feb 2026 |
| 104 | Williamson, Harry W. Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 1995 |