| 601 | BISTIS M | Susquehanna County, PA | Gas Property | Dec 2025 |
| 602 | BITENC | Crawford County, PA | Oil & Gas Property | Dec 2024 |
| 603 | BITNER/USX | Fayette County, PA | Gas Property | Dec 2025 |
| 604 | BIXBY | Potter County, PA | Gas Property | Dec 2024 |
| 605 | BIXBY B | Potter County, PA | Gas Property | Dec 2024 |
| 606 | BJ REINSEL | Clarion County, PA | Gas Property | Dec 2025 |
| 607 | BKT BRA | Bradford County, PA | Gas Property | Dec 2025 |
| 608 | BLACK | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 609 | BLACK | Fayette County, PA | Gas Property | Dec 2025 |
| 610 | BLACK | Susquehanna County, PA | Gas Property | Dec 2025 |
| 611 | BLACK CREEK | Sullivan County, PA | Gas Property | Aug 2024 |
| 612 | BLACK SAM BELLAMY | Bradford County, PA | Gas Property | Dec 2025 |
| 613 | BLACK STONE | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 614 | BLACK WILLIAM UNIT | Washington County, PA | Gas Property | Dec 2025 |
| 615 | BLACKBURN | Clearfield County, PA | Gas Property | Dec 2025 |
| 616 | BLACKSVILLE | Greene County, PA | Gas Property | Dec 2019 |
| 617 | BLACKSVILLE I | Greene County, PA | Gas Property | Dec 2013 |
| 618 | BLACKSVILLE II | Greene County, PA | Gas Property | Dec 2018 |
| 619 | BLAHO | Venango County, PA | Oil Property | Dec 2004 |
| 620 | BLAINE COMPTON | Indiana County, PA | Gas Property | Dec 2025 |
| 621 | BLAINE HOYD | Bradford County, PA | Gas Property | Dec 2025 |
| 622 | BLAINE MCADOO | Indiana County, PA | Gas Property | Dec 2023 |
| 623 | BLAIR | Greene County, PA | Gas Property | Dec 2006 |
| 624 | BLAIR HOOVER | Clearfield County, PA | Gas Property | Dec 2025 |
| 625 | BLAIR PETERMAN | Indiana County, PA | Gas Property | Dec 2025 |
| 626 | BLAIR SCHAWL ETUX | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 627 | BLAIRSVILLE | Westmoreland County, PA | Gas Property | Dec 2025 |
| 628 | BLAISURE J | Susquehanna County, PA | Gas Property | Dec 2025 |
| 629 | BLAKE/MINOR | Greene County, PA | Gas Property | Dec 2025 |
| 630 | BLAKER | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 631 | BLAKER/MINOR | Greene County, PA | Gas Property | Dec 2025 |
| 632 | BLANCHARD UNIT | Lycoming County, PA | Gas Property | Dec 2025 |
| 633 | BLANEY | Armstrong County, PA | Gas Property | Dec 2025 |
| 634 | BLANEY | Fayette County, PA | Gas Property | Dec 2025 |
| 635 | BLANK | Venango County, PA | Oil & Gas Property | Dec 2024 |
| 636 | BLANNARD | Bradford County, PA | Gas Property | Dec 2025 |
| 637 | BLAZEK | Indiana County, PA | Gas Property | Dec 2025 |
| 638 | BLEW LEASE | McKean County, PA | Oil & Gas Property | Dec 2018 |
| 639 | BLISS | Tioga County, PA | Gas Property | Dec 2025 |
| 640 | BLOOM | Clearfield County, PA | Gas Property | Dec 2025 |
| 641 | BLOOM UNIT | Butler County, PA | Gas Property | Dec 2025 |
| 642 | BLOSE FEE A ( | Clearfield County, PA | Gas Property | Dec 2025 |
| 643 | BLOSE MCGREGOR | Jefferson County, PA | Gas Property | Dec 2025 |
| 644 | BLOSE-STITEL | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 645 | BLOWER | Fayette County, PA | Gas Property | Dec 2025 |
| 646 | BLUE BECK | Susquehanna County, PA | Gas Property | Dec 2025 |
| 647 | BLUE JAY | Forest County, PA | Oil & Gas Property | Dec 2025 |
| 648 | BLUE JAY | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 649 | BLUE SKY | Clearfield County, PA | Gas Property | Dec 2025 |
| 650 | BLUE SKY | Jefferson County, PA | Gas Property | Dec 2025 |
| 651 | BLUE SKY 00 | Clearfield County, PA | Gas Property | Dec 2025 |
| 652 | BLUE SPRUCE | Indiana County, PA | Gas Property | Dec 2025 |
| 653 | BLUEBERRY HILL | Bradford County, PA | Gas Property | Dec 2025 |
| 654 | BLUEGRASS | Susquehanna County, PA | Gas Property | Dec 2025 |
| 655 | BLUETOWN | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 656 | BLYE | Susquehanna County, PA | Gas Property | Dec 2025 |
| 657 | BOALS | Venango County, PA | Oil Property | Dec 2006 |
| 658 | BOARTS | Armstrong County, PA | Gas Property | Dec 2023 |
| 659 | BOARTS 0 | Armstrong County, PA | Gas Property | Dec 2025 |
| 660 | BOARTS 00 | Indiana County, PA | Gas Property | Dec 2025 |
| 661 | BOBBISH | Fayette County, PA | Gas Property | Dec 2025 |
| 662 | BOBELAK | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 663 | BOBST A UNIT 2 | Lycoming County, PA | Gas Property | Dec 2025 |
| 664 | BOBST MOUNTAIN HUNTING CLUB | Lycoming County, PA | Gas Property | Dec 2025 |
| 665 | BOBST MTN HUNTING CLUB | Lycoming County, PA | Gas Property | Dec 2025 |
| 666 | BOBST UNIT 3 | Lycoming County, PA | Gas Property | Dec 2025 |
| 667 | BODNAR | Armstrong County, PA | Gas Property | Dec 2025 |
| 668 | BOGGS | Indiana County, PA | Gas Property | Dec 2025 |
| 669 | BOGREN (VLC) | Clearfield County, PA | Gas Property | Dec 2025 |
| 670 | BOLCATO G | Susquehanna County, PA | Gas Property | Dec 2025 |
| 671 | BOLE | Clarion County, PA | Gas Property | Dec 2025 |
| 672 | BOLLES | Susquehanna County, PA | Gas Property | Dec 2025 |
| 673 | BOLTENDAHL | Fayette County, PA | Gas Property | Dec 2025 |
| 674 | BOMAN | Susquehanna County, PA | Gas Property | Dec 2025 |
| 675 | BON-DE INC UNIT | Washington County, PA | Gas Property | Dec 2025 |
| 676 | BONACCI | Indiana County, PA | Gas Property | Dec 2025 |
| 677 | BONANTE | Clearfield County, PA | Gas Property | Dec 2025 |
| 678 | BOND | Jefferson County, PA | Gas Property | Dec 2025 |
| 679 | BONDI | Westmoreland County, PA | Gas Property | Dec 2025 |
| 680 | BONNELL RUN HUNTING & FISHING CORP | Lycoming County, PA | Gas Property | Dec 2025 |
| 681 | BONNICE | Susquehanna County, PA | Gas Property | Dec 2025 |
| 682 | BONNIE | Bradford County, PA | Gas Property | Dec 2025 |
| 683 | BONNY BROOK BYBK | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 684 | BONSALL | Allegheny County, PA | Oil & Gas Property | Dec 2025 |
| 685 | BOOCKS | Venango County, PA | Oil & Gas Property | Dec 2025 |
| 686 | BOONE | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 687 | BOONE | Armstrong County, PA | Gas Property | Dec 2025 |
| 688 | BOONE MT | Elk County, PA | Gas Property | Dec 2025 |
| 689 | BOOR 03 015 0 | Bradford County, PA | Gas Property | Dec 2025 |
| 690 | BOORD | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 691 | BOOTH | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 692 | BOREK | Susquehanna County, PA | Gas Property | Dec 2025 |
| 693 | BORLAND | Venango County, PA | Oil Property | Dec 1998 |
| 694 | BOROUGH OF VANDERGRIFT | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 695 | BORTZ CORPORATION | Fayette County, PA | Gas Property | Dec 2024 |
| 696 | BOSCH | Indiana County, PA | Gas Property | Dec 2025 |
| 697 | BOTTALI | Armstrong County, PA | Gas Property | Dec 2025 |
| 698 | BOVAIRD & CANAAN-BURNS | McKean County, PA | Oil & Gas Property | Dec 2015 |
| 699 | BOVARD DOROTHY UNIT | Allegheny County, PA | Gas Property | Dec 2025 |
| 700 | BOVINATOR | Washington County, PA | Gas Property | Dec 2025 |