| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Webb Resources Inc | Oil & Gas Operator | Dec 1985 | |
| 2 | Wellstar Corporation | Northglenn, CO 80233 | Oil & Gas Operator | Aug 2025 |
| 3 | Western Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 4 | Westport Oil And Gas Company Inc | Denver, CO 80202 | Oil & Gas Operator | Feb 2002 |
| 5 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 6 | Wulf Oil Corp. | Oil & Gas Operator | Dec 1985 | |
| 7 | Wyoming Resources Corporation | Rapid City, SD 57702 | Oil & Gas Operator | Oct 2018 |