| 5501 | ORLOSKY | Mercer County, PA | Gas Property | Dec 2023 |
| 5502 | ORMSBY DEVONIAN | McKean County, PA | Gas Property | Dec 1993 |
| 5503 | OROURKE 05 046 0 | Bradford County, PA | Gas Property | Sep 2024 |
| 5504 | ORR 1 | Fayette County, PA | Oil & Gas Property | Dec 2023 |
| 5505 | ORR 2 | Fayette County, PA | Oil & Gas Property | Dec 2023 |
| 5506 | ORR 3 | Fayette County, PA | Oil & Gas Property | Dec 2023 |
| 5507 | ORTH B | Warren County, PA | Oil & Gas Property | Dec 2014 |
| 5508 | ORTHODOX | Crawford County, PA | Oil & Gas Property | Dec 2023 |
| 5509 | ORTON | Washington County, PA | Oil & Gas Property | Apr 2023 |
| 5510 | ORVILLE | Indiana County, PA | Gas Property | Dec 2023 |
| 5511 | ORVILLE M WATSON | Indiana County, PA | Gas Property | Dec 2023 |
| 5512 | ORVILLE W. PRESCOTT | Clearfield County, PA | Gas Property | Dec 2008 |
| 5513 | ORWICK | Clearfield County, PA | Gas Property | Dec 2023 |
| 5514 | OS BURNHAM | Crawford County, PA | Gas Property | Dec 2017 |
| 5515 | OSCAR B GRANT | Elk County, PA | Oil & Gas Property | Dec 2023 |
| 5516 | OSCAR C BENSON | Jefferson County, PA | Gas Property | Dec 2023 |
| 5517 | OSCAR EARL HOUSER | Armstrong County, PA | Gas Property | Dec 2023 |
| 5518 | OSCAR J DRESSLER | Clearfield County, PA | Gas Property | Dec 2023 |
| 5519 | OSLEY | Fayette County, PA | Gas Property | Dec 2023 |
| 5520 | OSSESIA | Clarion County, PA | Gas Property | Dec 2023 |
| 5521 | OSSESSIA | Clarion County, PA | Gas Property | Dec 2023 |
| 5522 | OSTRICH | Greene County, PA | Gas Property | Sep 2024 |
| 5523 | OSWAYO CHEMICAL | Potter County, PA | Gas Property | Dec 2023 |
| 5524 | OTIS | Bradford County, PA | Gas Property | Sep 2024 |
| 5525 | OTIS IRONS | McKean County, PA | Gas Property | Dec 2023 |
| 5526 | OTIS PROCIOUS ETAL | Armstrong County, PA | Oil & Gas Property | Dec 2023 |
| 5527 | OTT 1 | Warren County, PA | Gas Property | Dec 2023 |
| 5528 | OTT 2 | Warren County, PA | Gas Property | Dec 2023 |
| 5529 | OTTEN | Wyoming County, PA | Gas Property | Sep 2024 |
| 5530 | OTTEN | Bradford County, PA | Gas Property | Sep 2024 |
| 5531 | OTTER WELL SVC | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 5532 | OTTO CHEM | Elk County, PA | Gas Property | Dec 2023 |
| 5533 | OVER | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 5534 | OVER | Clarion County, PA | Gas Property | Dec 2023 |
| 5535 | OW PROPER | Elk County, PA | Gas Property | Dec 2023 |
| 5536 | OWENS | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5537 | OZOG-THOMPSON 00 | Westmoreland County, PA | Gas Property | Dec 2023 |
| 5538 | P B SLEASE | Armstrong County, PA | Gas Property | Dec 2023 |
| 5539 | P CULLEN | Bradford County, PA | Gas Property | Sep 2024 |
| 5540 | P F EIS | Westmoreland County, PA | Gas Property | Dec 2023 |
| 5541 | P F RIGGLE | Armstrong County, PA | Gas Property | Dec 2023 |
| 5542 | P H DEETER NORTH | Venango County, PA | Gas Property | Dec 2023 |
| 5543 | P KELLEY | Susquehanna County, PA | Gas Property | Sep 2024 |
| 5544 | P LONG | Indiana County, PA | Gas Property | Dec 2023 |
| 5545 | P M DEETER | Venango County, PA | Oil & Gas Property | Dec 2023 |
| 5546 | P MOHNEY | Armstrong County, PA | Gas Property | Dec 2023 |
| 5547 | P NICHOLS | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5548 | P P V CORP | Clearfield County, PA | Gas Property | Dec 2023 |
| 5549 | P R LONG | Westmoreland County, PA | Gas Property | Dec 2023 |
| 5550 | P R U E WEISTER | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 5551 | P RINNE | Washington County, PA | Gas Property | Dec 2020 |
| 5552 | P WALDENBERGER | Susquehanna County, PA | Gas Property | Sep 2024 |
| 5553 | P WELLS | Susquehanna County, PA | Gas Property | Sep 2024 |
| 5554 | P WINSLOW | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 5555 | P&G 4 UNIT P&G4 2H | Wyoming County, PA | Gas Property | Sep 2024 |
| 5556 | P&G WAREHOUSE UNIT | Wyoming County, PA | Gas Property | Sep 2024 |
| 5557 | P&G4 P&G | Wyoming County, PA | Gas Property | Sep 2024 |
| 5558 | P.T. SHERRY | Indiana County, PA | Gas Property | Dec 2023 |
| 5559 | PA CHIP CHOP | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 5560 | PA DEPT | Clearfield County, PA | Gas Property | Dec 2023 |
| 5561 | PA DEPT OF F & W | Potter County, PA | Gas Property | Dec 1985 |
| 5562 | PA DEPT OF FOREST & WATERS | Clearfield County, PA | Gas Property | Dec 1985 |
| 5563 | PA EAST SIDE LAND | Armstrong County, PA | Gas Property | Dec 2023 |
| 5564 | PA FORESTS & WATERS DEPT | Elk County, PA | Gas Property | Dec 2022 |
| 5565 | PA FORESTS & WATERS DEPT TRACT | Elk County, PA | Gas Property | Dec 2021 |
| 5566 | PA FORESTS & WATERS DEPT TRACT 27 | Elk County, PA | Oil & Gas Property | Dec 2009 |
| 5567 | PA GAME | Jefferson County, PA | Gas Property | Dec 2013 |
| 5568 | PA GAME COMM | Jefferson County, PA | Gas Property | Dec 2023 |
| 5569 | PA GAME COMM | Mercer County, PA | Gas Property | Dec 2023 |
| 5570 | PA GAME COMM FMLY A | Jefferson County, PA | Gas Property | Dec 2023 |
| 5571 | PA GAME COMMISSION UNIT | Washington County, PA | Gas Property | Sep 2024 |
| 5572 | PA GAS CO 1 | Forest County, PA | Oil & Gas Property | Dec 2023 |
| 5573 | PA GAS WARRANT 3188 | Forest County, PA | Oil & Gas Property | Dec 2023 |
| 5574 | PA GAS WARRANT 3188 | Forest County, PA | Oil & Gas Property | Dec 2023 |
| 5575 | PA LAND HOLDINGS | Greene County, PA | Gas Property | Dec 2020 |
| 5576 | PA LAND HOLDINGS CO | Greene County, PA | Gas Property | Dec 2023 |
| 5577 | PA MINES | Cambria County, PA | Oil & Gas Property | Dec 2023 |
| 5578 | PA OIL CO TRACT | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5579 | PA S FARM FAMILY UNIT A 1H | Bradford County, PA | Gas Property | Sep 2024 |
| 5580 | PA SGL 28 | Elk County, PA | Oil & Gas Property | Dec 2023 |
| 5581 | PA SGL 44 3 | Elk County, PA | Gas Property | Dec 2023 |
| 5582 | PA SGL 54 387 | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 5583 | PA STATE FOREST | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 5584 | PA STATE FOREST | Elk County, PA | Oil & Gas Property | Dec 2023 |
| 5585 | PA STATE FOREST | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 5586 | PA STATE GAME | Elk County, PA | Gas Property | Dec 2023 |
| 5587 | PA STATE GAME | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 5588 | PA STATE GAME L | Venango County, PA | Oil & Gas Property | Dec 2020 |
| 5589 | PA STATE GAME LAND | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 5590 | PA STATE GAME LAND | Elk County, PA | Oil & Gas Property | Dec 2023 |
| 5591 | PA STATE GAME LAND | Mercer County, PA | Oil & Gas Property | Dec 2023 |
| 5592 | PA STATE GAME LANDS | Elk County, PA | Gas Property | Dec 2023 |
| 5593 | PA STATE GAME LANDS | Elk County, PA | Gas Property | Dec 2023 |
| 5594 | PA STATE GAME LANDS | Indiana County, PA | Gas Property | Dec 2023 |
| 5595 | PA STATE GAME LANDS | Jefferson County, PA | Gas Property | Dec 2023 |
| 5596 | PA TIMBER LP | Elk County, PA | Oil & Gas Property | Dec 2023 |
| 5597 | PA TRACT | Clinton County, PA | Gas Property | Sep 2024 |
| 5598 | PA WOODLANDS UNIT | Sullivan County, PA | Gas Property | Aug 2024 |
| 5599 | PAD W09 PER-W09-3H | Armstrong County, PA | Gas Property | Sep 2024 |
| 5600 | PAD W1 | Armstrong County, PA | Gas Property | Sep 2024 |