| 301 | BIG BEND | Johnson County, WY | Gas Property | Oct 2011 |
| 302 | BIG CAT | Johnson County, WY | Oil & Gas Property | Mar 2026 |
| 303 | BIG CAT FE | Johnson County, WY | Gas Property | Mar 2026 |
| 304 | BIG CAT FEDERAL | Johnson County, WY | Gas Property | Mar 2026 |
| 305 | BIG GEORGE | Johnson County, WY | Gas Property | Mar 2026 |
| 306 | BIG GEORGE | Johnson County, WY | Gas Property | Mar 2026 |
| 307 | BIG HORN | Fremont County, WY | Gas Property | Mar 2026 |
| 308 | BIG HORN | Fremont County, WY | Gas Property | Mar 2026 |
| 309 | BIG HORN SHEEP | Natrona County, WY | Oil Property | Mar 2026 |
| 310 | BIG JOHNSON | Sublette County, WY | Oil & Gas Property | Feb 2026 |
| 311 | BIG MESA | Sublette County, WY | Oil & Gas Property | Feb 2005 |
| 312 | BIG MIKE | Johnson County, WY | Gas Property | Mar 2026 |
| 313 | BIG MUDDY | Converse County, WY | Oil Property | Jan 2026 |
| 314 | BIG PINEY | Sublette County, WY | Oil & Gas Property | Feb 2026 |
| 315 | BIG PINEY | Sublette County, WY | Oil & Gas Property | Feb 2026 |
| 316 | BIG PINEY MESAVERDE | Sublette County, WY | Oil & Gas Property | Sep 1988 |
| 317 | BIG POLECAT UNIT | Park County, WY | Oil & Gas Property | Mar 2026 |
| 318 | BIG SAND DRAW | Fremont County, WY | Oil & Gas Property | Mar 2026 |
| 319 | BIG SANDY | Laramie County, WY | Oil & Gas Property | Mar 2026 |
| 320 | BIG SANDY | Laramie County, WY | Oil & Gas Property | Mar 2026 |
| 321 | BIG SANDY FEDERAL | Sublette County, WY | Oil & Gas Property | Jul 2022 |
| 322 | BIGHORN | Fremont County, WY | Gas Property | Mar 2026 |
| 323 | BIGHORN 2-3 | Fremont County, WY | Gas Property | Mar 2026 |
| 324 | BIGHORN CS FEDERAL | Campbell County, WY | Gas Property | May 2013 |
| 325 | BIGHORN FEDERAL COM 1 | Campbell County, WY | Oil & Gas Property | Mar 2026 |
| 326 | BIGHORN PEAK 3974-21-28-1NH | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 327 | BIJOU FED 3471-2536 3SXH | Converse County, WY | Oil & Gas Property | Apr 2026 |
| 328 | BILLBOARD 4471-1720-1PH | Campbell County, WY | Oil & Gas Property | Mar 2026 |
| 329 | BILLY 3526-1 | Laramie County, WY | Oil & Gas Property | Mar 2026 |
| 330 | BILLY NELSON | Campbell County, WY | Oil Property | Mar 2026 |
| 331 | BIRCH 0607 | Campbell County, WY | Oil & Gas Property | Mar 2026 |
| 332 | BIRCH CREEK | Sublette County, WY | Oil & Gas Property | Mar 2026 |
| 333 | BIRD 3468-26 | Converse County, WY | Oil & Gas Property | Apr 2026 |
| 334 | BIRD CANYON | Sublette County, WY | Oil & Gas Property | Mar 2026 |
| 335 | BIRD STATE | Sublette County, WY | Oil & Gas Property | Aug 2018 |
| 336 | BIRDSALL | Campbell County, WY | Oil & Gas Property | Mar 2026 |
| 337 | BIRDSHOT FED 3773-3130 | Converse County, WY | Oil & Gas Property | Apr 2026 |
| 338 | BISCAYNE | Laramie County, WY | Oil & Gas Property | Mar 2026 |
| 339 | BISCUIT STATE 3976-15-22-2FH | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 340 | BISHOP | Campbell County, WY | Oil & Gas Property | Apr 2026 |
| 341 | BISHOP | Campbell County, WY | Oil & Gas Property | Jun 1999 |
| 342 | BISON BASIN | Fremont County, WY | Oil & Gas Property | Mar 2026 |
| 343 | BITTER CREEK | Sweetwater County, WY | Oil & Gas Property | Mar 2026 |
| 344 | BLACK JACK FED 3774-22-27-1FH | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 345 | BLACK MOUN | Hot Springs County, WY | Oil Property | Mar 2026 |
| 346 | BLACK MTN UNIT 14 | Washakie County, WY | Oil Property | Mar 2026 |
| 347 | BLACK THUNDER | Weston County, WY | Oil & Gas Property | Apr 2026 |
| 348 | BLACKBIRD | Converse County, WY | Oil Property | Mar 2026 |
| 349 | BLACKJACK | Lincoln County, WY | Oil & Gas Property | Apr 2026 |
| 350 | BLACKS FORK | Uinta County, WY | Oil & Gas Property | Mar 2026 |
| 351 | BLADE | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 352 | BLADE CS FEDERAL | Johnson County, WY | Gas Property | Dec 2019 |
| 353 | BLANCHE | Campbell County, WY | Oil & Gas Property | Oct 2019 |
| 354 | BLATT | Crook County, WY | Oil & Gas Property | Mar 2026 |
| 355 | BLIZZARD | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 356 | BLK 10-15 | Converse County, WY | Oil Property | Nov 1986 |
| 357 | BLK B UN | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 358 | BLK THUNDER | Weston County, WY | Oil & Gas Property | Mar 2026 |
| 359 | BLK-B-UN FEDERAL 18 | Converse County, WY | Oil & Gas Property | Feb 1994 |
| 360 | BLK-B-UN PATENTED | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 361 | BLK-B-UNIT PATENTED | Converse County, WY | Oil & Gas Property | Dec 1988 |
| 362 | BLM FED | Campbell County, WY | Gas Property | Oct 2017 |
| 363 | BLOCK B | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 364 | BLONDIE FED 3572-1213 1NH | Converse County, WY | Oil & Gas Property | Apr 2026 |
| 365 | BLUE BUTTE | Johnson County, WY | Gas Property | Mar 2026 |
| 366 | BLUE FOREST | Sweetwater County, WY | Oil & Gas Property | Mar 2026 |
| 367 | BLUE GAP | Carbon County, WY | Oil & Gas Property | Mar 2026 |
| 368 | BLUE GAP | Carbon County, WY | Oil & Gas Property | Mar 2026 |
| 369 | BLUE GAP | Carbon County, WY | Oil & Gas Property | Mar 2026 |
| 370 | BLUE GOOSE | Carbon County, WY | Oil & Gas Property | Aug 2021 |
| 371 | BLUE HAYSTACK UNIT | Carbon County, WY | Oil & Gas Property | Feb 2026 |
| 372 | BLUE HILL | Converse County, WY | Oil & Gas Property | Mar 2022 |
| 373 | BLUE RIM | Sublette County, WY | Oil & Gas Property | Mar 2026 |
| 374 | BLUE WOODS FED | Sweetwater County, WY | Oil & Gas Property | Feb 2026 |
| 375 | BLUE WOODS FED | Sweetwater County, WY | Oil & Gas Property | Mar 2026 |
| 376 | BLUEBIRD 3471-3031 | Converse County, WY | Oil & Gas Property | Apr 2026 |
| 377 | BLUEBIRD CS | Campbell County, WY | Oil & Gas Property | Jul 2015 |
| 378 | BLUEGATE FED | Campbell County, WY | Gas Property | Sep 2009 |
| 379 | BLUM FED 3770-17 | Converse County, WY | Oil & Gas Property | Apr 2026 |
| 380 | BMU 1 | Laramie County, WY | Oil & Gas Property | Apr 2026 |
| 381 | BNG 1 | Sublette County, WY | Oil & Gas Property | Feb 2026 |
| 382 | BNG 2 | Sublette County, WY | Oil & Gas Property | Feb 2026 |
| 383 | BNG 3 | Sublette County, WY | Oil & Gas Property | Feb 2026 |
| 384 | BNG 5 | Sublette County, WY | Oil & Gas Property | Feb 2026 |
| 385 | BNG 7 | Sublette County, WY | Oil & Gas Property | Feb 2026 |
| 386 | BNG 8 | Sublette County, WY | Oil & Gas Property | Feb 2026 |
| 387 | BNG E-024353 | Sublette County, WY | Oil & Gas Property | Aug 2006 |
| 388 | BOB FED | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 389 | BOBCAT 4471-1720-1PH | Campbell County, WY | Oil & Gas Property | Mar 2026 |
| 390 | BOCK UNIT | Weston County, WY | Oil & Gas Property | Jun 2021 |
| 391 | BOG FE | Converse County, WY | Gas Property | Oct 2006 |
| 392 | BOG STATE | Campbell County, WY | Gas Property | Apr 2012 |
| 393 | BOGGY CREEK | Niobrara County, WY | Oil & Gas Property | Mar 2026 |
| 394 | BOHLANDER FED 3974 | Converse County, WY | Oil & Gas Property | Apr 2026 |
| 395 | BOLAND | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 396 | BOLLER 45-71-33 | Campbell County, WY | Oil & Gas Property | Apr 2026 |
| 397 | BOLLER-MILLS | Campbell County, WY | Gas Property | Jun 2012 |
| 398 | BOLSTER CS FEDERAL | Johnson County, WY | Gas Property | May 2023 |
| 399 | BOLT | Campbell County, WY | Oil & Gas Property | Mar 2026 |
| 400 | BOLT | Campbell County, WY | Oil & Gas Property | Mar 2026 |