| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 501 | Whitney Oil And Gas Corp | Oil & Gas Operator | Oct 1988 | |
| 502 | Wicklund Enterprises Inc | Oil Operator | Dec 2024 | |
| 503 | Winterfield Corp | Oil Operator | Nov 2024 | |
| 504 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 505 | Wisley Robert | Oil & Gas Operator | Dec 1994 | |
| 506 | Wolverine Environmental Production Inc | Oil & Gas Operator | Sep 2000 | |
| 507 | Wolverine Gas And Oil Company Of Michigan LLC | Oil & Gas Operator | Nov 2024 | |
| 508 | Yost Energy Inc | Oil & Gas Operator | Mar 2025 | |
| 509 | Yost Richard D Dba Yost Inc | Oil Operator | Aug 2024 |