| 6501 | ROCHESTER & PGH COAL | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 6502 | ROCHESTER & PGH COAL CO | Jefferson County, PA | Gas Property | Dec 2024 |
| 6503 | ROCHESTER & PGH COAL CO | Jefferson County, PA | Gas Property | Dec 2024 |
| 6504 | ROCHESTER & PGH COAL CO | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 6505 | ROCHESTER & PITT | Indiana County, PA | Gas Property | Dec 2024 |
| 6506 | ROCHESTER & PITTS | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 6507 | ROCHESTER & PITTSBURG | Armstrong County, PA | Gas Property | Dec 2024 |
| 6508 | ROCHESTER & PITTSBURGH CO | Indiana County, PA | Gas Property | Dec 2024 |
| 6509 | ROCHESTER & PITTSBURGH COAL CO | Armstrong County, PA | Oil & Gas Property | Dec 2024 |
| 6510 | ROCHESTER & PITTSBURGH COAL CO | Indiana County, PA | Gas Property | Dec 2024 |
| 6511 | ROCHESTER & PITTSUBRGH COAL CO | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 6512 | ROCHESTER&PITTSBURGH COAL | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 6513 | ROCK FURNA | Armstrong County, PA | Gas Property | Dec 2024 |
| 6514 | ROCK RUN | McKean County, PA | Oil Property | Dec 2024 |
| 6515 | ROCKEFELLER (05-275-0 | Susquehanna County, PA | Gas Property | Feb 2025 |
| 6516 | ROCKS | Bradford County, PA | Gas Property | Feb 2025 |
| 6517 | ROCKWELL | Crawford County, PA | Oil & Gas Property | Dec 2024 |
| 6518 | RODE | Greene County, PA | Gas Property | Dec 2024 |
| 6519 | RODNEY T MCDIVITT ET UX | Jefferson County, PA | Gas Property | Dec 2024 |
| 6520 | RODOCOY | Mercer County, PA | Oil & Gas Property | Dec 2024 |
| 6521 | ROEBER | Bradford County, PA | Gas Property | Feb 2025 |
| 6522 | ROEDER | Venango County, PA | Oil Property | Dec 2024 |
| 6523 | ROEHRIG SMITH | Bradford County, PA | Gas Property | Feb 2025 |
| 6524 | ROELL LEASE ROELL | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 6525 | ROGER | Susquehanna County, PA | Gas Property | Feb 2025 |
| 6526 | ROGER H CLAYPOOLE ETUX | Armstrong County, PA | Gas Property | Feb 2025 |
| 6527 | ROGER JOHNSTON | Jefferson County, PA | Gas Property | Dec 2024 |
| 6528 | ROGER PARRY | Greene County, PA | Gas Property | Feb 2025 |
| 6529 | ROGERS 05 235 0 | Bradford County, PA | Gas Property | Feb 2025 |
| 6530 | ROGERS UNIT | Susquehanna County, PA | Gas Property | Feb 2025 |
| 6531 | ROHANNA | Greene County, PA | Gas Property | Feb 2025 |
| 6532 | ROLAND | Bradford County, PA | Gas Property | Feb 2025 |
| 6533 | ROLAND C BLAKESLEE | Crawford County, PA | Gas Property | Dec 2024 |
| 6534 | ROLAND G TIRACORDA | Clearfield County, PA | Gas Property | Dec 2024 |
| 6535 | ROLLING ACRES | Beaver County, PA | Gas Property | Feb 2025 |
| 6536 | ROLLING HILLS | Armstrong County, PA | Gas Property | Feb 2025 |
| 6537 | ROLLINSON | Mercer County, PA | Oil & Gas Property | Dec 2024 |
| 6538 | ROMAN | Susquehanna County, PA | Gas Property | Feb 2025 |
| 6539 | ROMANETTI UNIT | Washington County, PA | Oil & Gas Property | Jun 2012 |
| 6540 | ROMEIKA J | Susquehanna County, PA | Gas Property | Feb 2025 |
| 6541 | ROMEO-WT 4911 26 | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 6542 | ROMISOUKAS UNIT 1H | Bradford County, PA | Gas Property | Feb 2025 |
| 6543 | RON 1 U | Potter County, PA | Gas Property | Feb 2025 |
| 6544 | RONALD | Erie County, PA | Oil & Gas Property | Dec 2024 |
| 6545 | RONALD | Westmoreland County, PA | Gas Property | Dec 2024 |
| 6546 | RONALD CHERNISKY | Indiana County, PA | Gas Property | Dec 2024 |
| 6547 | RONALD HEMMINGER | Westmoreland County, PA | Gas Property | Dec 2024 |
| 6548 | RONALD J GAFNER G | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 6549 | RONALD MEABON | Erie County, PA | Gas Property | Dec 2024 |
| 6550 | RONALD R BUTERBAUGH | Clearfield County, PA | Gas Property | Dec 2024 |
| 6551 | RONALD RUMMEL ETAL | Indiana County, PA | Gas Property | Dec 2024 |
| 6552 | RONALD SAMUEL | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 6553 | RONALD T KUNSELMAN | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 6554 | RONMARY | Sullivan County, PA | Gas Property | Feb 2025 |
| 6555 | ROOT | Tioga County, PA | Gas Property | Feb 2025 |
| 6556 | RORABAUGH | Clearfield County, PA | Gas Property | Dec 2024 |
| 6557 | RORABAUGH | Clearfield County, PA | Gas Property | Dec 2024 |
| 6558 | ROSA | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 6559 | ROSA UNIT | Fayette County, PA | Gas Property | Feb 2025 |
| 6560 | ROSALIE | Wyoming County, PA | Gas Property | Feb 2025 |
| 6561 | ROSE | Bradford County, PA | Gas Property | Feb 2025 |
| 6562 | ROSE RUGH | Indiana County, PA | Gas Property | Dec 2024 |
| 6563 | ROSE VALLEY 56H 51728 | Lycoming County, PA | Gas Property | Feb 2025 |
| 6564 | ROSE VALLEY GAMBLE | Lycoming County, PA | Gas Property | Feb 2025 |
| 6565 | ROSIEMAR | Susquehanna County, PA | Gas Property | Feb 2025 |
| 6566 | ROSS | Armstrong County, PA | Gas Property | Dec 2024 |
| 6567 | ROSS ROBERTS | Bradford County, PA | Gas Property | Feb 2025 |
| 6568 | ROSS RUN RANCH RRR | Forest County, PA | Oil & Gas Property | Dec 2014 |
| 6569 | ROSS SEANOR | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 6570 | ROSSI BRA | Bradford County, PA | Gas Property | Jan 2025 |
| 6571 | ROSTOSKY 59 | Allegheny County, PA | Gas Property | Feb 2025 |
| 6572 | ROSUL UNIT | Fayette County, PA | Gas Property | Feb 2025 |
| 6573 | ROSWELL MILLER | Westmoreland County, PA | Gas Property | Dec 2024 |
| 6574 | ROTH | Westmoreland County, PA | Gas Property | Dec 2024 |
| 6575 | ROUGH HOLLOW 593 | Greene County, PA | Gas Property | Feb 2025 |
| 6576 | ROUGH RUN MFG CO 1118 | Butler County, PA | Gas Property | Dec 2024 |
| 6577 | ROUND TOP ENTERPRISES | Jefferson County, PA | Gas Property | Dec 2024 |
| 6578 | ROUNDTOP | Sullivan County, PA | Gas Property | Sep 2021 |
| 6579 | ROUNDWOOD | Wyoming County, PA | Gas Property | Jan 2025 |
| 6580 | ROUPP UNIT | Lycoming County, PA | Gas Property | Feb 2025 |
| 6581 | ROUSE | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 6582 | ROWE | Bradford County, PA | Gas Property | Feb 2025 |
| 6583 | ROWLAND CAROL 10067 | Washington County, PA | Gas Property | Feb 2025 |
| 6584 | ROY & ARCHER | Elk County, PA | Oil & Gas Property | Dec 2019 |
| 6585 | ROY 03 0 | Bradford County, PA | Gas Property | Feb 2025 |
| 6586 | ROY 6 | Potter County, PA | Gas Property | Dec 2024 |
| 6587 | ROY A ORR | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 6588 | ROY D LEAMER 1 | Cambria County, PA | Oil & Gas Property | Dec 2024 |
| 6589 | ROY H LUTZ | Clearfield County, PA | Gas Property | Dec 2024 |
| 6590 | ROY MUSGRAVE | Beaver County, PA | Oil & Gas Property | Dec 2023 |
| 6591 | ROY N CLAWSON FMLY HOMER BOWMAN ETUX | Indiana County, PA | Gas Property | Dec 2024 |
| 6592 | ROY RAMALE | Indiana County, PA | Gas Property | Dec 2024 |
| 6593 | ROYAL HUEY 59056 | Clarion County, PA | Gas Property | Feb 2025 |
| 6594 | ROYAL OIL | Indiana County, PA | Gas Property | Dec 2024 |
| 6595 | ROYAL OIL & GAS | Indiana County, PA | Gas Property | Dec 2024 |
| 6596 | ROYAL OIL & GAS 590 | Indiana County, PA | Gas Property | Feb 2025 |
| 6597 | ROYAL OIL & GAS CORP | Clearfield County, PA | Gas Property | Dec 2023 |
| 6598 | ROYAL OL & GAS CORP | Clearfield County, PA | Gas Property | Dec 2023 |
| 6599 | ROYSTONE | Warren County, PA | Oil & Gas Property | Dec 2010 |
| 6600 | ROZAK | Fayette County, PA | Gas Property | Dec 2024 |