| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 201 | Warrego Oil & Gas LLC | Lander, WY 82520 | Oil Operator | May 2018 |
| 202 | Washakie Oil Company | Oil & Gas Operator | Dec 1989 | |
| 203 | Washington Energy Exploration | Oil & Gas Operator | Dec 1997 | |
| 204 | Wesco Operating Inc | Casper, WY 82602 | Oil & Gas Operator | Jun 2026 |
| 205 | Wesco Production LLC | Oil & Gas Operator | Jun 2025 | |
| 206 | Wexpro Company | Rock Springs, WY 82902-0458 | Oil & Gas Operator | May 2026 |
| 207 | Wind River Energy Commission | Oil Operator | Mar 2026 | |
| 208 | Wold Oil & Gas | Oil & Gas Operator | Oct 1996 | |
| 209 | Wold Oil Properties Inc | Denver, CO 80203 | Oil & Gas Operator | Feb 2018 |
| 210 | Wood River Oil & Refining Co | Oil & Gas Operator | Dec 1998 | |
| 211 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2026 |
| 212 | Zavanna Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2026 |