| 6401 | ROBERT W. GRAY FM AT | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 6402 | ROBERTA B JONES | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 6403 | ROBERTS | Greene County, PA | Gas Property | Dec 2015 |
| 6404 | ROBERTS 59 | Greene County, PA | Gas Property | Apr 2026 |
| 6405 | ROBERTS BEA | Beaver County, PA | Gas Property | Apr 2026 |
| 6406 | ROBERTSON | Armstrong County, PA | Gas Property | Dec 2025 |
| 6407 | ROBINHILL | Washington County, PA | Oil & Gas Property | Apr 2026 |
| 6408 | ROBINSON | Fayette County, PA | Oil & Gas Property | Apr 2026 |
| 6409 | ROBINSON | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 6410 | ROBINSON | Bradford County, PA | Gas Property | Apr 2026 |
| 6411 | ROBINSON | Susquehanna County, PA | Gas Property | Apr 2026 |
| 6412 | ROBINSON | Armstrong County, PA | Gas Property | Dec 2025 |
| 6413 | ROBINSON 82 | Indiana County, PA | Gas Property | Dec 2025 |
| 6414 | ROBINSON CAMPBELL 11132 | Washington County, PA | Gas Property | Apr 2026 |
| 6415 | ROBINSON FERGUSON | Bradford County, PA | Gas Property | Apr 2026 |
| 6416 | ROBY GROSE | Jefferson County, PA | Oil & Gas Property | Dec 2025 |
| 6417 | ROCHESTER & PGH | Clearfield County, PA | Gas Property | Dec 2025 |
| 6418 | ROCHESTER & PGH C | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 6419 | ROCHESTER & PGH COAL | Jefferson County, PA | Gas Property | Dec 2025 |
| 6420 | ROCHESTER & PGH COAL | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 6421 | ROCHESTER & PGH COAL | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 6422 | ROCHESTER & PGH COAL CO | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 6423 | ROCHESTER & PGH COAL CO | Jefferson County, PA | Gas Property | Dec 2025 |
| 6424 | ROCHESTER & PGH COAL CO | Jefferson County, PA | Gas Property | Dec 2025 |
| 6425 | ROCHESTER & PITT | Indiana County, PA | Gas Property | Dec 2025 |
| 6426 | ROCHESTER & PITTS | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 6427 | ROCHESTER & PITTSBURG | Armstrong County, PA | Gas Property | Dec 2025 |
| 6428 | ROCHESTER & PITTSBURGH CO | Indiana County, PA | Gas Property | Dec 2025 |
| 6429 | ROCHESTER & PITTSBURGH COAL CO | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 6430 | ROCHESTER & PITTSBURGH COAL CO | Indiana County, PA | Gas Property | Dec 2025 |
| 6431 | ROCHESTER & PITTSUBRGH COAL CO | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 6432 | ROCHESTER&PITTSBURGH COAL | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 6433 | ROCK FURNA | Armstrong County, PA | Gas Property | Dec 2025 |
| 6434 | ROCK RUN | McKean County, PA | Oil Property | Dec 2025 |
| 6435 | ROCKEFELLER (05-275-0 | Susquehanna County, PA | Gas Property | Apr 2026 |
| 6436 | ROCKS | Bradford County, PA | Gas Property | Apr 2026 |
| 6437 | ROCKWELL | Crawford County, PA | Oil & Gas Property | Dec 2025 |
| 6438 | RODE | Greene County, PA | Gas Property | Dec 2025 |
| 6439 | RODNEY T MCDIVITT ET UX | Jefferson County, PA | Gas Property | Dec 2025 |
| 6440 | RODOCOY | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 6441 | ROEBER | Bradford County, PA | Gas Property | Apr 2026 |
| 6442 | ROEDER | Venango County, PA | Oil Property | Dec 2025 |
| 6443 | ROEHRIG SMITH | Bradford County, PA | Gas Property | Apr 2026 |
| 6444 | ROELL LEASE ROELL | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 6445 | ROESS | Venango County, PA | Oil Property | Dec 2025 |
| 6446 | ROGER | Susquehanna County, PA | Gas Property | Apr 2026 |
| 6447 | ROGER H CLAYPOOLE ETUX | Armstrong County, PA | Gas Property | Apr 2026 |
| 6448 | ROGER JOHNSTON | Jefferson County, PA | Gas Property | Dec 2025 |
| 6449 | ROGER PARRY | Greene County, PA | Gas Property | Apr 2026 |
| 6450 | ROGERS | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 6451 | ROGERS 05 235 0 | Bradford County, PA | Gas Property | Apr 2026 |
| 6452 | ROGERS UNIT | Susquehanna County, PA | Gas Property | Apr 2026 |
| 6453 | ROHANNA | Greene County, PA | Gas Property | Apr 2026 |
| 6454 | ROLAND | Bradford County, PA | Gas Property | Apr 2026 |
| 6455 | ROLAND C BLAKESLEE | Crawford County, PA | Gas Property | Dec 2025 |
| 6456 | ROLAND G TIRACORDA | Clearfield County, PA | Gas Property | Dec 2025 |
| 6457 | ROLLING ACRES | Beaver County, PA | Gas Property | Apr 2026 |
| 6458 | ROLLING HILLS | Armstrong County, PA | Gas Property | Apr 2026 |
| 6459 | ROLLINSON | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 6460 | ROMAN | Susquehanna County, PA | Gas Property | Apr 2026 |
| 6461 | ROMANETTI UNIT | Washington County, PA | Oil & Gas Property | Jun 2012 |
| 6462 | ROMEIKA J | Susquehanna County, PA | Gas Property | Apr 2026 |
| 6463 | ROMEO-WT 4911 26 | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 6464 | ROMISOUKAS UNIT 1H | Bradford County, PA | Gas Property | Apr 2026 |
| 6465 | RON 1 U | Potter County, PA | Gas Property | Apr 2026 |
| 6466 | RON 2 UH | Potter County, PA | Gas Property | Apr 2026 |
| 6467 | RON 5 UH | Potter County, PA | Gas Property | Apr 2026 |
| 6468 | RONALD | Erie County, PA | Oil & Gas Property | Dec 2025 |
| 6469 | RONALD | Westmoreland County, PA | Gas Property | Dec 2025 |
| 6470 | RONALD CHERNISKY | Indiana County, PA | Gas Property | Dec 2025 |
| 6471 | RONALD HEMMINGER | Westmoreland County, PA | Gas Property | Dec 2025 |
| 6472 | RONALD J GAFNER G | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 6473 | RONALD MEABON | Erie County, PA | Gas Property | Dec 2025 |
| 6474 | RONALD R BUTERBAUGH | Clearfield County, PA | Gas Property | Dec 2025 |
| 6475 | RONALD RUMMEL ETAL | Indiana County, PA | Gas Property | Dec 2025 |
| 6476 | RONALD SAMUEL | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 6477 | RONALD T KUNSELMAN | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 6478 | RONMARY | Sullivan County, PA | Gas Property | Apr 2026 |
| 6479 | ROOT | Tioga County, PA | Gas Property | Apr 2026 |
| 6480 | RORABAUGH | Clearfield County, PA | Gas Property | Dec 2025 |
| 6481 | RORABAUGH | Clearfield County, PA | Gas Property | Dec 2025 |
| 6482 | ROSA | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 6483 | ROSA UNIT | Fayette County, PA | Gas Property | Apr 2026 |
| 6484 | ROSALIE | Wyoming County, PA | Gas Property | Apr 2026 |
| 6485 | ROSE | Bradford County, PA | Gas Property | Apr 2026 |
| 6486 | ROSE RUGH | Indiana County, PA | Gas Property | Dec 2025 |
| 6487 | ROSE VALLEY 56H 51728 | Lycoming County, PA | Gas Property | Apr 2026 |
| 6488 | ROSE VALLEY GAMBLE | Lycoming County, PA | Gas Property | Apr 2026 |
| 6489 | ROSIEMAR | Susquehanna County, PA | Gas Property | Apr 2026 |
| 6490 | ROSS | Armstrong County, PA | Gas Property | Dec 2025 |
| 6491 | ROSS ROBERTS | Bradford County, PA | Gas Property | Apr 2026 |
| 6492 | ROSS RUN RANCH RRR | Forest County, PA | Oil & Gas Property | Dec 2014 |
| 6493 | ROSS SEANOR | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 6494 | ROSSI BRA | Bradford County, PA | Gas Property | Apr 2026 |
| 6495 | ROSTOSKY 59 | Allegheny County, PA | Gas Property | Apr 2026 |
| 6496 | ROSUL UNIT | Fayette County, PA | Gas Property | Apr 2026 |
| 6497 | ROSWELL MILLER | Westmoreland County, PA | Gas Property | Dec 2025 |
| 6498 | ROTH | Westmoreland County, PA | Gas Property | Dec 2025 |
| 6499 | ROUGH HOLLOW 593 | Greene County, PA | Gas Property | Apr 2026 |
| 6500 | ROUGH RUN MFG CO 1118 | Butler County, PA | Gas Property | Dec 2025 |