| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Walker Oil & Gas Co LLC* Keith F | Oil & Gas Operator | Jun 2011 | |
| 2 | Walsh Production Inc | Oil & Gas Operator | Nov 2008 | |
| 3 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Sep 2024 |
| 4 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Sep 2024 |
| 5 | Wexpro Company | Rock Springs, WY 82902-0458 | Oil & Gas Operator | Oct 2024 |
| 6 | Whitewing Resources LLC | Oil & Gas Operator | Jun 2014 | |
| 7 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 8 | Wind River Exploration Inc | Sewickley, PA 15143 | Oil & Gas Operator | Aug 2024 |
| 9 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 10 | Wy Woodland Operating, LLC | Covington, TX 76636 | Oil & Gas Operator | Dec 2024 |