| 501 | BULLWHACKER CREEK UN | Johnson County, WY | Gas Property | Apr 2026 |
| 502 | BUNN FEDERAL | Campbell County, WY | Oil & Gas Property | May 2026 |
| 503 | BUNTEN | Campbell County, WY | Oil & Gas Property | Aug 2024 |
| 504 | BURCH 1 | Crook County, WY | Oil & Gas Property | May 2026 |
| 505 | BURGER DRAW CS FED | Johnson County, WY | Gas Property | Nov 2019 |
| 506 | BURGESS | Sheridan County, WY | Gas Property | Mar 2014 |
| 507 | BURGESS LAND | Sheridan County, WY | Gas Property | Mar 2014 |
| 508 | BURGESS STATE | Sheridan County, WY | Gas Property | Mar 2014 |
| 509 | BURKE RANCH | Natrona County, WY | Oil & Gas Property | May 2026 |
| 510 | BURLINGTON NORTHERN | Park County, WY | Oil & Gas Property | May 2026 |
| 511 | BURLY | Sublette County, WY | Oil & Gas Property | May 2026 |
| 512 | BURNETT | Campbell County, WY | Oil & Gas Property | Sep 2023 |
| 513 | BURNS | Laramie County, WY | Oil & Gas Property | May 2026 |
| 514 | BURR FEDERAL | Natrona County, WY | Oil & Gas Property | May 2026 |
| 515 | BURROWS | Crook County, WY | Oil & Gas Property | May 2026 |
| 516 | BURROWS A FEDERAL | Crook County, WY | Oil & Gas Property | May 2026 |
| 517 | BUSHWHACKER FED | Johnson County, WY | Oil & Gas Property | Apr 2026 |
| 518 | BUSTARD | Converse County, WY | Oil & Gas Property | May 2026 |
| 519 | BUSTER FEDERAL 3502 35-73 | Converse County, WY | Oil & Gas Property | May 2026 |
| 520 | BUTCH | Campbell County, WY | Oil & Gas Property | Apr 2026 |
| 521 | BUTCHER | Weston County, WY | Oil & Gas Property | Jun 2020 |
| 522 | BUTCHER | Campbell County, WY | Gas Property | Apr 2012 |
| 523 | BUTCHER | Campbell County, WY | Gas Property | May 2013 |
| 524 | BUTCHER KNIFE | Uinta County, WY | Oil & Gas Property | Apr 2026 |
| 525 | BUTLER | Weston County, WY | Oil Property | Feb 2003 |
| 526 | BUTTE | Niobrara County, WY | Oil Property | May 2026 |
| 527 | BUTTERFLY 13 | Laramie County, WY | Oil & Gas Property | May 2026 |
| 528 | BUTTERMILK 22-1 | Carbon County, WY | Oil & Gas Property | May 2026 |
| 529 | BUTTRAM | Weston County, WY | Oil & Gas Property | May 2026 |
| 530 | BUW ALLEMAND 3875-12-13-2N2H | Converse County, WY | Oil & Gas Property | May 2026 |
| 531 | BUZZARD FEDERAL | Sweetwater County, WY | Oil & Gas Property | Nov 2024 |
| 532 | BX 10 | Sublette County, WY | Gas Property | May 2026 |
| 533 | BYRON UNI | Big Horn County, WY | Oil & Gas Property | May 2026 |
| 534 | C & F RANCH | Campbell County, WY | Gas Property | Jun 2017 |
| 535 | C & F RANCH | Campbell County, WY | Gas Property | Feb 2012 |
| 536 | C 74-22 | Sublette County, WY | Oil & Gas Property | May 2026 |
| 537 | C ANDERSON | Big Horn County, WY | Oil & Gas Property | May 2026 |
| 538 | C G ROAD | Sweetwater County, WY | Oil & Gas Property | May 2026 |
| 539 | C GOV'T 2H | Big Horn County, WY | Oil & Gas Property | May 2026 |
| 540 | C J THOMPSON | Niobrara County, WY | Oil & Gas Property | Sep 2021 |
| 541 | C LINDSAY | Big Horn County, WY | Oil & Gas Property | May 2026 |
| 542 | C SMITH | Campbell County, WY | Gas Property | May 2009 |
| 543 | C-029 | Sweetwater County, WY | Oil & Gas Property | Aug 1978 |
| 544 | C-045060 | Park County, WY | Oil & Gas Property | Mar 1986 |
| 545 | C-045855 LBB | Park County, WY | Oil & Gas Property | Apr 2026 |
| 546 | C-055136 | Park County, WY | Oil & Gas Property | Mar 1992 |
| 547 | C-067221 GEBO UNIT 29 | Hot Springs County, WY | Oil & Gas Property | May 2026 |
| 548 | C-068612 ELK BASIN 200 | Park County, WY | Oil & Gas Property | May 2026 |
| 549 | CABALLO | Campbell County, WY | Gas Property | Nov 2008 |
| 550 | CABALLO | Campbell County, WY | Gas Property | Mar 2007 |
| 551 | CABALLO | Campbell County, WY | Gas Property | May 2011 |
| 552 | CABALLO | Campbell County, WY | Gas Property | Jul 2005 |
| 553 | CABALLO | Campbell County, WY | Gas Property | Jul 2011 |
| 554 | CABALLO | Campbell County, WY | Oil & Gas Property | Oct 2025 |
| 555 | CABALLO COAL FEDERAL | Campbell County, WY | Gas Property | Dec 2006 |
| 556 | CABRITO | Sublette County, WY | Oil & Gas Property | Apr 2026 |
| 557 | CACKLIN LOU STATE | Sublette County, WY | Oil & Gas Property | Apr 2026 |
| 558 | CACTUS | Park County, WY | Oil & Gas Property | May 2026 |
| 559 | CADENA 0310 | Campbell County, WY | Oil & Gas Property | May 2026 |
| 560 | CADET FE | Johnson County, WY | Oil & Gas Property | Apr 2026 |
| 561 | CAIN 16-63-2 | Laramie County, WY | Oil & Gas Property | May 2026 |
| 562 | CALAMITY SPR | Campbell County, WY | Oil Property | Sep 2017 |
| 563 | CAMARO | Laramie County, WY | Oil & Gas Property | May 2026 |
| 564 | CAMARO 0607 | Campbell County, WY | Oil & Gas Property | May 2026 |
| 565 | CAMBLIN | Campbell County, WY | Gas Property | Sep 2013 |
| 566 | CAMBRIDGE | Crook County, WY | Oil Property | May 2026 |
| 567 | CAMINO | Johnson County, WY | Gas Property | Apr 2026 |
| 568 | CAMINO RANCH LP FED | Johnson County, WY | Gas Property | Apr 2026 |
| 569 | CAMP JOHN | Campbell County, WY | Gas Property | Apr 2026 |
| 570 | CAMPBELL | Converse County, WY | Oil & Gas Property | Apr 2026 |
| 571 | CAMPBELL | Campbell County, WY | Oil Property | May 2026 |
| 572 | CAMPBELL | Campbell County, WY | Gas Property | Jun 2013 |
| 573 | CAMPBELL | Sheridan County, WY | Gas Property | Feb 2013 |
| 574 | CAMPBELL | Converse County, WY | Oil & Gas Property | May 2026 |
| 575 | CAMPBELL CO LAND | Campbell County, WY | Oil Property | Jul 2021 |
| 576 | CANCUN | Campbell County, WY | Oil & Gas Property | Jan 2026 |
| 577 | CANTON | Sweetwater County, WY | Oil & Gas Property | May 2026 |
| 578 | CANYON | Campbell County, WY | Gas Property | Jun 2015 |
| 579 | CANYON CREEK | Sweetwater County, WY | Oil & Gas Property | May 2026 |
| 580 | CANYON CREEK UNIT | Sweetwater County, WY | Oil & Gas Property | May 2026 |
| 581 | CAPSHAW | Park County, WY | Oil & Gas Property | May 2026 |
| 582 | CAPTAIN FED | Converse County, WY | Oil & Gas Property | Apr 2026 |
| 583 | CARDINAL | Big Horn County, WY | Oil & Gas Property | May 2026 |
| 584 | CARLETON | Weston County, WY | Oil Property | Jan 2018 |
| 585 | CARLSON | Big Horn County, WY | Oil Property | Jul 2000 |
| 586 | CARLSON | Campbell County, WY | Gas Property | Dec 2009 |
| 587 | CARLTON | Campbell County, WY | Oil & Gas Property | May 2026 |
| 588 | CARMODY | Fremont County, WY | Oil Property | Oct 2025 |
| 589 | CARPENTER | Laramie County, WY | Oil & Gas Property | May 2026 |
| 590 | CARRIE PUT | Niobrara County, WY | Oil & Gas Property | May 2026 |
| 591 | CARRIER CS FEDERAL | Johnson County, WY | Gas Property | May 2023 |
| 592 | CARSON | Converse County, WY | Oil & Gas Property | Mar 2025 |
| 593 | CARSON | Campbell County, WY | Oil & Gas Property | Jan 2015 |
| 594 | CARSON EAST CS | Campbell County, WY | Gas Property | Feb 2012 |
| 595 | CARSON NORTH CS ST | Campbell County, WY | Gas Property | Jan 2012 |
| 596 | CARSON-HAM | Campbell County, WY | Oil & Gas Property | Oct 1998 |
| 597 | CARTER | Sheridan County, WY | Gas Property | Jun 2015 |
| 598 | CARTER | Campbell County, WY | Gas Property | Jun 2005 |
| 599 | CARTER FEDERAL | Campbell County, WY | Gas Property | Mar 2009 |
| 600 | CARU | Campbell County, WY | Gas Property | Apr 2026 |