| 401 | ROCHESTER & PITT | Indiana County, PA | Gas Property | Dec 2025 |
| 402 | ROCHESTER & PITTS | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 403 | ROCHESTER & PITTSBURG | Armstrong County, PA | Gas Property | Dec 2025 |
| 404 | ROCHESTER & PITTSBURGH CO | Indiana County, PA | Gas Property | Dec 2025 |
| 405 | ROCHESTER & PITTSBURGH COAL CO | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 406 | ROCHESTER & PITTSBURGH COAL CO | Indiana County, PA | Gas Property | Dec 2025 |
| 407 | ROCHESTER & PITTSUBRGH COAL CO | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 408 | ROCHESTER&PITTSBURGH COAL | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 409 | ROCK FURNA | Armstrong County, PA | Gas Property | Dec 2025 |
| 410 | ROCK RUN | McKean County, PA | Oil Property | Dec 2025 |
| 411 | ROCKEFELLER (05-275-0 | Susquehanna County, PA | Gas Property | Apr 2026 |
| 412 | ROCKS | Bradford County, PA | Gas Property | Apr 2026 |
| 413 | ROCKWELL | Crawford County, PA | Oil & Gas Property | Dec 2025 |
| 414 | RODE | Greene County, PA | Gas Property | Dec 2025 |
| 415 | RODNEY T MCDIVITT ET UX | Jefferson County, PA | Gas Property | Dec 2025 |
| 416 | RODOCOY | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 417 | ROEBER | Bradford County, PA | Gas Property | Apr 2026 |
| 418 | ROEDER | Venango County, PA | Oil Property | Dec 2025 |
| 419 | ROEHRIG SMITH | Bradford County, PA | Gas Property | Apr 2026 |
| 420 | ROELL LEASE ROELL | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 421 | ROESS | Venango County, PA | Oil Property | Dec 2025 |
| 422 | ROGER | Susquehanna County, PA | Gas Property | Apr 2026 |
| 423 | ROGER H CLAYPOOLE ETUX | Armstrong County, PA | Gas Property | Apr 2026 |
| 424 | ROGER JOHNSTON | Jefferson County, PA | Gas Property | Dec 2025 |
| 425 | ROGER PARRY | Greene County, PA | Gas Property | Apr 2026 |
| 426 | ROGERS | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 427 | ROGERS 05 235 0 | Bradford County, PA | Gas Property | Apr 2026 |
| 428 | ROGERS UNIT | Susquehanna County, PA | Gas Property | Apr 2026 |
| 429 | ROHANNA | Greene County, PA | Gas Property | Apr 2026 |
| 430 | ROLAND | Bradford County, PA | Gas Property | Apr 2026 |
| 431 | ROLAND C BLAKESLEE | Crawford County, PA | Gas Property | Dec 2025 |
| 432 | ROLAND G TIRACORDA | Clearfield County, PA | Gas Property | Dec 2025 |
| 433 | ROLLING ACRES | Beaver County, PA | Gas Property | Apr 2026 |
| 434 | ROLLING HILLS | Armstrong County, PA | Gas Property | Apr 2026 |
| 435 | ROLLINSON | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 436 | ROMAN | Susquehanna County, PA | Gas Property | Apr 2026 |
| 437 | ROMANETTI UNIT | Washington County, PA | Oil & Gas Property | Jun 2012 |
| 438 | ROMEIKA J | Susquehanna County, PA | Gas Property | Apr 2026 |
| 439 | ROMEO-WT 4911 26 | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 440 | ROMISOUKAS UNIT 1H | Bradford County, PA | Gas Property | Apr 2026 |
| 441 | RON 1 U | Potter County, PA | Gas Property | Apr 2026 |
| 442 | RON 2 UH | Potter County, PA | Gas Property | Apr 2026 |
| 443 | RON 5 UH | Potter County, PA | Gas Property | Apr 2026 |
| 444 | RONALD | Erie County, PA | Oil & Gas Property | Dec 2025 |
| 445 | RONALD | Westmoreland County, PA | Gas Property | Dec 2025 |
| 446 | RONALD CHERNISKY | Indiana County, PA | Gas Property | Dec 2025 |
| 447 | RONALD HEMMINGER | Westmoreland County, PA | Gas Property | Dec 2025 |
| 448 | RONALD J GAFNER G | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 449 | RONALD MEABON | Erie County, PA | Gas Property | Dec 2025 |
| 450 | RONALD R BUTERBAUGH | Clearfield County, PA | Gas Property | Dec 2025 |
| 451 | RONALD RUMMEL ETAL | Indiana County, PA | Gas Property | Dec 2025 |
| 452 | RONALD SAMUEL | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 453 | RONALD T KUNSELMAN | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 454 | RONMARY | Sullivan County, PA | Gas Property | Apr 2026 |
| 455 | ROOT | Tioga County, PA | Gas Property | Apr 2026 |
| 456 | RORABAUGH | Clearfield County, PA | Gas Property | Dec 2025 |
| 457 | RORABAUGH | Clearfield County, PA | Gas Property | Dec 2025 |
| 458 | ROSA | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 459 | ROSA UNIT | Fayette County, PA | Gas Property | Apr 2026 |
| 460 | ROSALIE | Wyoming County, PA | Gas Property | Apr 2026 |
| 461 | ROSE | Bradford County, PA | Gas Property | Apr 2026 |
| 462 | ROSE RUGH | Indiana County, PA | Gas Property | Dec 2025 |
| 463 | ROSE VALLEY 56H 51728 | Lycoming County, PA | Gas Property | Apr 2026 |
| 464 | ROSE VALLEY GAMBLE | Lycoming County, PA | Gas Property | Apr 2026 |
| 465 | ROSIEMAR | Susquehanna County, PA | Gas Property | Apr 2026 |
| 466 | ROSS | Armstrong County, PA | Gas Property | Dec 2025 |
| 467 | ROSS ROBERTS | Bradford County, PA | Gas Property | Apr 2026 |
| 468 | ROSS RUN RANCH RRR | Forest County, PA | Oil & Gas Property | Dec 2014 |
| 469 | ROSS SEANOR | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 470 | ROSSI BRA | Bradford County, PA | Gas Property | Apr 2026 |
| 471 | ROSTOSKY 59 | Allegheny County, PA | Gas Property | Apr 2026 |
| 472 | ROSUL UNIT | Fayette County, PA | Gas Property | Apr 2026 |
| 473 | ROSWELL MILLER | Westmoreland County, PA | Gas Property | Dec 2025 |
| 474 | ROTH | Westmoreland County, PA | Gas Property | Dec 2025 |
| 475 | ROUGH HOLLOW 593 | Greene County, PA | Gas Property | Apr 2026 |
| 476 | ROUGH RUN MFG CO 1118 | Butler County, PA | Gas Property | Dec 2025 |
| 477 | ROUND TOP ENTERPRISES | Jefferson County, PA | Gas Property | Dec 2025 |
| 478 | ROUNDTOP | Sullivan County, PA | Gas Property | Sep 2021 |
| 479 | ROUNDWOOD | Wyoming County, PA | Gas Property | Apr 2026 |
| 480 | ROUPP UNIT | Lycoming County, PA | Gas Property | Apr 2026 |
| 481 | ROUSE | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 482 | ROWE | Bradford County, PA | Gas Property | Apr 2026 |
| 483 | ROWLAND CAROL 10067 | Washington County, PA | Gas Property | Apr 2026 |
| 484 | ROY & ARCHER | Elk County, PA | Oil & Gas Property | Dec 2019 |
| 485 | ROY 03 0 | Bradford County, PA | Gas Property | Apr 2026 |
| 486 | ROY A ORR | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 487 | ROY D LEAMER 1 | Cambria County, PA | Oil & Gas Property | Dec 2025 |
| 488 | ROY H LUTZ | Clearfield County, PA | Gas Property | Dec 2025 |
| 489 | ROY MUSGRAVE | Beaver County, PA | Oil & Gas Property | Dec 2025 |
| 490 | ROY N CLAWSON FMLY HOMER BOWMAN ETUX | Indiana County, PA | Gas Property | Dec 2025 |
| 491 | ROY RAMALE | Indiana County, PA | Gas Property | Dec 2025 |
| 492 | ROYAL HUEY 59056 | Clarion County, PA | Oil & Gas Property | Apr 2026 |
| 493 | ROYAL OIL | Indiana County, PA | Gas Property | Dec 2025 |
| 494 | ROYAL OIL & GAS | Indiana County, PA | Gas Property | Dec 2025 |
| 495 | ROYAL OIL & GAS 590 | Indiana County, PA | Gas Property | Apr 2026 |
| 496 | ROYAL OIL & GAS CORP | Clearfield County, PA | Gas Property | Dec 2025 |
| 497 | ROYAL OL & GAS CORP | Clearfield County, PA | Gas Property | Dec 2025 |
| 498 | ROYSTONE | Warren County, PA | Oil & Gas Property | Dec 2010 |
| 499 | ROZAK | Fayette County, PA | Gas Property | Dec 2025 |
| 500 | RR ADAMS | Jefferson County, PA | Gas Property | Dec 2025 |