| 501 | BRUG | Campbell County, WY | Gas Property | Jun 2015 |
| 502 | BRUG FED | Campbell County, WY | Gas Property | Jun 2015 |
| 503 | BRUNER | Weston County, WY | Oil & Gas Property | Jan 2026 |
| 504 | BRUSHY CREEK | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 505 | BS FEDERAL 12 | Sweetwater County, WY | Oil & Gas Property | Jun 2026 |
| 506 | BSDU 5 | Fremont County, WY | Oil & Gas Property | Jun 2026 |
| 507 | BSU 0 | Carbon County, WY | Oil & Gas Property | Jun 2026 |
| 508 | BSU 1 | Carbon County, WY | Oil & Gas Property | Jun 2026 |
| 509 | BSU 1 | Carbon County, WY | Oil & Gas Property | Jun 2026 |
| 510 | BSU 3 | Carbon County, WY | Oil & Gas Property | Jun 2026 |
| 511 | BTP 5172 1 | Campbell County, WY | Gas Property | May 2006 |
| 512 | BTU (BRANAMAN) 24 | Weston County, WY | Oil & Gas Property | Sep 1988 |
| 513 | BTU (SEDGWICK) 25 | Weston County, WY | Oil & Gas Property | Jun 1986 |
| 514 | BU 11-33 | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 515 | BU 22-30-35-67 | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 516 | BU 24-32-35-67 | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 517 | BUCK | Lincoln County, WY | Oil & Gas Property | Jul 2026 |
| 518 | BUCK | Niobrara County, WY | Oil & Gas Property | Jul 2026 |
| 519 | BUCK DRAW | Sweetwater County, WY | Oil & Gas Property | Jun 2026 |
| 520 | BUCKAROO 0 | Laramie County, WY | Oil & Gas Property | Jan 2022 |
| 521 | BUCKAROO 1 | Laramie County, WY | Oil & Gas Property | Jul 2026 |
| 522 | BUCKAROO 2 | Laramie County, WY | Oil & Gas Property | Jul 2026 |
| 523 | BUCKEYE | Sweetwater County, WY | Oil & Gas Property | Jun 2026 |
| 524 | BUCKHORN | Sweetwater County, WY | Oil & Gas Property | Nov 2013 |
| 525 | BUCKO CS | Campbell County, WY | Gas Property | Nov 2014 |
| 526 | BUCKSKIN | Campbell County, WY | Gas Property | Jun 2011 |
| 527 | BUCKSKIN CS FED | Campbell County, WY | Gas Property | Jan 2014 |
| 528 | BUCKY FED 3671-11-2 | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 529 | BUFFALO | Johnson County, WY | Oil & Gas Property | Jul 2026 |
| 530 | BUFFALO FED 28-33H | Niobrara County, WY | Oil & Gas Property | Jul 2026 |
| 531 | BUFFALO HUMP | Sweetwater County, WY | Oil & Gas Property | Oct 2010 |
| 532 | BUFFUM FEDERAL 24-30 38-73H | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 533 | BULKLEY | Sheridan County, WY | Gas Property | Mar 2009 |
| 534 | BULL CANYON | Laramie County, WY | Oil & Gas Property | Jul 2026 |
| 535 | BULL MOOSE | Carbon County, WY | Oil & Gas Property | Aug 2014 |
| 536 | BULLFROG | Natrona County, WY | Oil & Gas Property | Jun 2026 |
| 537 | BULLSBROOK | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 538 | BULLSEYE | Niobrara County, WY | Oil Property | Jul 2026 |
| 539 | BULLWHACKER CREEK UN | Johnson County, WY | Gas Property | Jun 2026 |
| 540 | BUNN FEDERAL | Campbell County, WY | Oil & Gas Property | Jul 2026 |
| 541 | BUNTEN | Campbell County, WY | Oil & Gas Property | Aug 2024 |
| 542 | BURCH 1 | Crook County, WY | Oil & Gas Property | Jul 2026 |
| 543 | BURCH FED 4778-31 | Johnson County, WY | Oil & Gas Property | Jul 2026 |
| 544 | BURGER DRAW CS FED | Johnson County, WY | Gas Property | Nov 2019 |
| 545 | BURGESS | Sheridan County, WY | Gas Property | Mar 2014 |
| 546 | BURGESS LAND | Sheridan County, WY | Gas Property | Mar 2014 |
| 547 | BURGESS STATE | Sheridan County, WY | Gas Property | Mar 2014 |
| 548 | BURKE RANCH | Natrona County, WY | Oil & Gas Property | Jul 2026 |
| 549 | BURLINGTON NORTHERN | Park County, WY | Oil & Gas Property | Jul 2026 |
| 550 | BURLY | Sublette County, WY | Oil & Gas Property | Jul 2026 |
| 551 | BURNETT | Campbell County, WY | Oil & Gas Property | Sep 2023 |
| 552 | BURNS | Laramie County, WY | Oil & Gas Property | Jul 2026 |
| 553 | BURR FEDERAL | Natrona County, WY | Oil & Gas Property | Jul 2026 |
| 554 | BURROWS | Crook County, WY | Oil & Gas Property | Jul 2026 |
| 555 | BURROWS A FEDERAL | Crook County, WY | Oil & Gas Property | Jul 2026 |
| 556 | BUSHWHACKER FED | Johnson County, WY | Oil & Gas Property | Jul 2026 |
| 557 | BUSTARD | Converse County, WY | Oil & Gas Property | Jun 2026 |
| 558 | BUSTER FEDERAL 3502 35-73 | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 559 | BUTCH | Campbell County, WY | Oil & Gas Property | Jun 2026 |
| 560 | BUTCHER | Weston County, WY | Oil & Gas Property | Jun 2020 |
| 561 | BUTCHER | Campbell County, WY | Gas Property | Apr 2012 |
| 562 | BUTCHER | Campbell County, WY | Gas Property | May 2013 |
| 563 | BUTCHER KNIFE | Uinta County, WY | Oil & Gas Property | May 2026 |
| 564 | BUTLER | Weston County, WY | Oil Property | Feb 2003 |
| 565 | BUTTE | Niobrara County, WY | Oil Property | Jul 2026 |
| 566 | BUTTERFLY 13 | Laramie County, WY | Oil & Gas Property | Jul 2026 |
| 567 | BUTTERMILK 22-1 | Carbon County, WY | Oil & Gas Property | Jun 2026 |
| 568 | BUTTERMILK STATE 3976-15-22-1FH | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 569 | BUTTRAM | Weston County, WY | Oil & Gas Property | Jul 2026 |
| 570 | BUW ALLEMAND 3875-12-13-2N2H | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 571 | BUZZARD FEDERAL | Sweetwater County, WY | Oil & Gas Property | Nov 2024 |
| 572 | BX 10 | Sublette County, WY | Gas Property | Jul 2026 |
| 573 | BYRON UNI | Big Horn County, WY | Oil & Gas Property | Jul 2026 |
| 574 | C & F RANCH | Campbell County, WY | Gas Property | Jun 2017 |
| 575 | C & F RANCH | Campbell County, WY | Gas Property | Feb 2012 |
| 576 | C ANDERSON | Big Horn County, WY | Oil & Gas Property | Jul 2026 |
| 577 | C FEDNE DOME FED 1 | Uinta County, WY | Oil & Gas Property | Jul 2026 |
| 578 | C G ROAD | Sweetwater County, WY | Oil & Gas Property | Jun 2026 |
| 579 | C GOV'T 2H | Big Horn County, WY | Oil & Gas Property | Jul 2026 |
| 580 | C J THOMPSON | Niobrara County, WY | Oil & Gas Property | Sep 2021 |
| 581 | C LINDSAY | Big Horn County, WY | Oil & Gas Property | Jul 2026 |
| 582 | C SMITH | Campbell County, WY | Gas Property | May 2009 |
| 583 | C-029 | Sweetwater County, WY | Oil & Gas Property | Aug 1978 |
| 584 | C-045060 | Park County, WY | Oil & Gas Property | Mar 1986 |
| 585 | C-045855 LBB | Park County, WY | Oil & Gas Property | Jul 2026 |
| 586 | C-055136 | Park County, WY | Oil & Gas Property | Mar 1992 |
| 587 | C-068612 ELK BASIN 200 | Park County, WY | Oil & Gas Property | Jun 2026 |
| 588 | CABALLO | Campbell County, WY | Gas Property | Nov 2008 |
| 589 | CABALLO | Campbell County, WY | Gas Property | Mar 2007 |
| 590 | CABALLO | Campbell County, WY | Gas Property | May 2011 |
| 591 | CABALLO | Campbell County, WY | Gas Property | Jul 2005 |
| 592 | CABALLO | Campbell County, WY | Gas Property | Jul 2011 |
| 593 | CABALLO | Campbell County, WY | Oil & Gas Property | Oct 2025 |
| 594 | CABALLO COAL FEDERAL | Campbell County, WY | Gas Property | Dec 2006 |
| 595 | CABRITO | Sublette County, WY | Oil & Gas Property | Jun 2026 |
| 596 | CACKLIN LOU STATE | Sublette County, WY | Oil & Gas Property | Jul 2026 |
| 597 | CACTUS | Park County, WY | Oil & Gas Property | Jul 2026 |
| 598 | CADENA 0310 | Campbell County, WY | Oil & Gas Property | Jul 2026 |
| 599 | CADET FE | Johnson County, WY | Oil & Gas Property | Jul 2026 |
| 600 | CAIN 16-63-2 | Laramie County, WY | Oil & Gas Property | Jul 2026 |