| 401 | BUTLER | Weston County, WY | Oil Property | Feb 2003 |
| 402 | BUTTE | Niobrara County, WY | Oil Property | Jul 2026 |
| 403 | BUTTERFLY 13 | Laramie County, WY | Oil & Gas Property | Jul 2026 |
| 404 | BUTTERMILK 22-1 | Carbon County, WY | Oil & Gas Property | Jun 2026 |
| 405 | BUTTERMILK STATE 3976-15-22-1FH | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 406 | BUTTRAM | Weston County, WY | Oil & Gas Property | Jul 2026 |
| 407 | BUW ALLEMAND 3875-12-13-2N2H | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 408 | BUZZARD FEDERAL | Sweetwater County, WY | Oil & Gas Property | Nov 2024 |
| 409 | BX 10 | Sublette County, WY | Gas Property | Jul 2026 |
| 410 | BYRON UNI | Big Horn County, WY | Oil & Gas Property | Jul 2026 |