| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Ward-Williston Company | Oil & Gas Operator | Apr 2014 | |
| 2 | Wesco Operating, Inc. | Casper, WY 82602 | Oil & Gas Operator | Mar 2024 |
| 3 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | May 2024 |
| 4 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 5 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Feb 2024 |
| 6 | Williston Hunter ND, LLC | Oil & Gas Operator | Mar 2014 | |
| 7 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |