| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Wagner & Brown | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 2 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 3 | Warhorse Oil & Gas, LLC | Oil & Gas Operator | Dec 2018 | |
| 4 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 5 | Whiskey Bay Oil Company | Oil & Gas Operator | May 1990 | |
| 6 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jan 2025 |
| 7 | Whitton Company, Inc. | Oil & Gas Operator | Jul 2020 | |
| 8 | Will-Drill Production Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Oct 2025 |