| 6501 | ROLLING ACRES | Beaver County, PA | Gas Property | May 2025 |
| 6502 | ROLLING HILLS | Armstrong County, PA | Gas Property | May 2025 |
| 6503 | ROLLINSON | Mercer County, PA | Oil & Gas Property | Dec 2024 |
| 6504 | ROMAN | Susquehanna County, PA | Gas Property | May 2025 |
| 6505 | ROMANETTI UNIT | Washington County, PA | Oil & Gas Property | Jun 2012 |
| 6506 | ROMEIKA J | Susquehanna County, PA | Gas Property | May 2025 |
| 6507 | ROMEO-WT 4911 26 | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 6508 | ROMISOUKAS UNIT 1H | Bradford County, PA | Gas Property | May 2025 |
| 6509 | RON 1 U | Potter County, PA | Gas Property | May 2025 |
| 6510 | RON 2 UH | Potter County, PA | Gas Property | May 2025 |
| 6511 | RONALD | Erie County, PA | Oil & Gas Property | Dec 2024 |
| 6512 | RONALD | Westmoreland County, PA | Gas Property | Dec 2024 |
| 6513 | RONALD CHERNISKY | Indiana County, PA | Gas Property | Dec 2024 |
| 6514 | RONALD HEMMINGER | Westmoreland County, PA | Gas Property | Dec 2024 |
| 6515 | RONALD J GAFNER G | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 6516 | RONALD MEABON | Erie County, PA | Gas Property | Dec 2024 |
| 6517 | RONALD R BUTERBAUGH | Clearfield County, PA | Gas Property | Dec 2024 |
| 6518 | RONALD RUMMEL ETAL | Indiana County, PA | Gas Property | Dec 2024 |
| 6519 | RONALD SAMUEL | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 6520 | RONALD T KUNSELMAN | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 6521 | RONMARY | Sullivan County, PA | Gas Property | May 2025 |
| 6522 | ROOT | Tioga County, PA | Gas Property | May 2025 |
| 6523 | RORABAUGH | Clearfield County, PA | Gas Property | Dec 2024 |
| 6524 | RORABAUGH | Clearfield County, PA | Gas Property | Dec 2024 |
| 6525 | ROSA | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 6526 | ROSA UNIT | Fayette County, PA | Gas Property | May 2025 |
| 6527 | ROSALIE | Wyoming County, PA | Gas Property | May 2025 |
| 6528 | ROSE | Bradford County, PA | Gas Property | May 2025 |
| 6529 | ROSE RUGH | Indiana County, PA | Gas Property | Dec 2024 |
| 6530 | ROSE VALLEY 56H 51728 | Lycoming County, PA | Gas Property | May 2025 |
| 6531 | ROSE VALLEY GAMBLE | Lycoming County, PA | Gas Property | May 2025 |
| 6532 | ROSIEMAR | Susquehanna County, PA | Gas Property | May 2025 |
| 6533 | ROSS | Armstrong County, PA | Gas Property | Dec 2024 |
| 6534 | ROSS ROBERTS | Bradford County, PA | Gas Property | May 2025 |
| 6535 | ROSS RUN RANCH RRR | Forest County, PA | Oil & Gas Property | Dec 2014 |
| 6536 | ROSS SEANOR | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 6537 | ROSSI BRA | Bradford County, PA | Gas Property | May 2025 |
| 6538 | ROSTOSKY 59 | Allegheny County, PA | Gas Property | May 2025 |
| 6539 | ROSUL UNIT | Fayette County, PA | Gas Property | May 2025 |
| 6540 | ROSWELL MILLER | Westmoreland County, PA | Gas Property | Dec 2024 |
| 6541 | ROTH | Westmoreland County, PA | Gas Property | Dec 2024 |
| 6542 | ROUGH HOLLOW 593 | Greene County, PA | Gas Property | May 2025 |
| 6543 | ROUGH RUN MFG CO 1118 | Butler County, PA | Gas Property | Dec 2024 |
| 6544 | ROUND TOP ENTERPRISES | Jefferson County, PA | Gas Property | Dec 2024 |
| 6545 | ROUNDTOP | Sullivan County, PA | Gas Property | Sep 2021 |
| 6546 | ROUNDWOOD | Wyoming County, PA | Gas Property | Jan 2025 |
| 6547 | ROUPP UNIT | Lycoming County, PA | Gas Property | May 2025 |
| 6548 | ROUSE | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 6549 | ROWE | Bradford County, PA | Gas Property | May 2025 |
| 6550 | ROWLAND CAROL 10067 | Washington County, PA | Gas Property | May 2025 |
| 6551 | ROY & ARCHER | Elk County, PA | Oil & Gas Property | Dec 2019 |
| 6552 | ROY 03 0 | Bradford County, PA | Gas Property | May 2025 |
| 6553 | ROY 6 | Potter County, PA | Gas Property | Dec 2024 |
| 6554 | ROY A ORR | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 6555 | ROY D LEAMER 1 | Cambria County, PA | Oil & Gas Property | Dec 2024 |
| 6556 | ROY H LUTZ | Clearfield County, PA | Gas Property | Dec 2024 |
| 6557 | ROY N CLAWSON FMLY HOMER BOWMAN ETUX | Indiana County, PA | Gas Property | Dec 2024 |
| 6558 | ROY RAMALE | Indiana County, PA | Gas Property | Dec 2024 |
| 6559 | ROYAL HUEY 59056 | Clarion County, PA | Oil & Gas Property | May 2025 |
| 6560 | ROYAL OIL | Indiana County, PA | Gas Property | Dec 2024 |
| 6561 | ROYAL OIL & GAS | Indiana County, PA | Gas Property | Dec 2024 |
| 6562 | ROYAL OIL & GAS 590 | Indiana County, PA | Gas Property | May 2025 |
| 6563 | ROYAL OIL & GAS CORP | Clearfield County, PA | Gas Property | Dec 2023 |
| 6564 | ROYAL OL & GAS CORP | Clearfield County, PA | Gas Property | Dec 2023 |
| 6565 | ROYSTONE | Warren County, PA | Oil & Gas Property | Dec 2010 |
| 6566 | ROZAK | Fayette County, PA | Gas Property | Dec 2024 |
| 6567 | RR ADAMS | Jefferson County, PA | Gas Property | Dec 2024 |
| 6568 | RUARK EAST RUARK EAST 1 1H | Wyoming County, PA | Gas Property | May 2025 |
| 6569 | RUARK EAST UNIT RUARK 11H | Wyoming County, PA | Gas Property | May 2025 |
| 6570 | RUARK SOUTH UNIT RUARK EAST 1 RUARK SOUTH 2H | Wyoming County, PA | Gas Property | May 2025 |
| 6571 | RUARK UNIT P&G 5 RUARK 4H | Wyoming County, PA | Gas Property | May 2025 |
| 6572 | RUARK-JOHNSTON-REIMILLER UNIT P&G2 22H | Wyoming County, PA | Gas Property | May 2025 |
| 6573 | RUCCIO | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 6574 | RUDOLPH | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 6575 | RUDOLPH H GASTON | Indiana County, PA | Gas Property | Dec 2024 |
| 6576 | RUDOLPH L KUHNER | Indiana County, PA | Gas Property | Dec 2024 |
| 6577 | RUDY | Washington County, PA | Gas Property | Dec 2024 |
| 6578 | RUELBA L STEEL | Indiana County, PA | Gas Property | Dec 2024 |
| 6579 | RUFF 0 | Westmoreland County, PA | Gas Property | Dec 2024 |
| 6580 | RUGGERI 00 | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 6581 | RUHLMAN | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 6582 | RUHLMAN | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 6583 | RUHLMAN | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 6584 | RUHLMAN LEASE R | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 6585 | RUHLMAN LOT 452 2 | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 6586 | RUKAVINA UNIT | Washington County, PA | Gas Property | May 2025 |
| 6587 | RUMPELSTILTSKIN | Washington County, PA | Gas Property | May 2025 |
| 6588 | RUNABUCK UNIT | Sullivan County, PA | Gas Property | May 2025 |
| 6589 | RUOT | Venango County, PA | Oil Property | Dec 2024 |
| 6590 | RUPERT | Armstrong County, PA | Gas Property | Dec 2024 |
| 6591 | RUPERT | Clearfield County, PA | Gas Property | Dec 2024 |
| 6592 | RUPERT | Armstrong County, PA | Gas Property | Dec 2024 |
| 6593 | RUPERT | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 6594 | RUPP | Armstrong County, PA | Gas Property | Dec 2024 |
| 6595 | RUPP | Armstrong County, PA | Gas Property | Dec 2024 |
| 6596 | RUPP | Armstrong County, PA | Gas Property | Dec 2024 |
| 6597 | RURA | Indiana County, PA | Gas Property | Dec 2024 |
| 6598 | RUSCITTO | Washington County, PA | Oil & Gas Property | Dec 2024 |
| 6599 | RUSH | Greene County, PA | Oil & Gas Property | May 2025 |
| 6600 | RUSH JOHN UNIT | Washington County, PA | Gas Property | May 2025 |