| 1401 | CORBIN | Indiana County, PA | Oil & Gas Property | Dec 2022 |
| 1402 | CORBIN J | Susquehanna County, PA | Gas Property | Feb 2024 |
| 1403 | COREY 07 089 0 | Susquehanna County, PA | Gas Property | Feb 2024 |
| 1404 | CORNHILL C UNIT | Lycoming County, PA | Gas Property | Feb 2024 |
| 1405 | CORNPLANTER | Forest County, PA | Oil Property | Dec 2020 |
| 1406 | CORNWALL | Lycoming County, PA | Gas Property | Feb 2024 |
| 1407 | CORNWALL B | Lycoming County, PA | Gas Property | Feb 2024 |
| 1408 | CORNWALL C | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 1409 | CORNWALL EAST UNIT | Lycoming County, PA | Gas Property | Feb 2024 |
| 1410 | CORNWALL NORTH UNIT | Lycoming County, PA | Gas Property | Feb 2024 |
| 1411 | CORNWALL TURKEY UNIT | Lycoming County, PA | Gas Property | Feb 2024 |
| 1412 | CORRIDONI | Indiana County, PA | Gas Property | Dec 2023 |
| 1413 | CORRY | Greene County, PA | Gas Property | Feb 2024 |
| 1414 | CORSAIR | Greene County, PA | Gas Property | Feb 2024 |
| 1415 | CORSE | Venango County, PA | Oil Property | Dec 2023 |
| 1416 | CORSON UNIT | Lycoming County, PA | Gas Property | Feb 2024 |
| 1417 | COSGRAY | Greene County, PA | Gas Property | Feb 2024 |
| 1418 | COSNER | Susquehanna County, PA | Gas Property | Feb 2024 |
| 1419 | COSS | Mercer County, PA | Gas Property | Dec 2023 |
| 1420 | COSTANZO UNIT | Washington County, PA | Oil & Gas Property | Feb 2024 |
| 1421 | COTTON HANLON 595 | Tioga County, PA | Gas Property | Feb 2024 |
| 1422 | COULTER | Crawford County, PA | Oil & Gas Property | Dec 2023 |
| 1423 | COULTER | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 1424 | COUNTY OF ARMSTRONG | Armstrong County, PA | Gas Property | Dec 2023 |
| 1425 | COURTNEY | Mercer County, PA | Gas Property | Dec 2023 |
| 1426 | COURTNEY | Tioga County, PA | Gas Property | Feb 2024 |
| 1427 | COVEYTOWN | Sullivan County, PA | Gas Property | Feb 2024 |
| 1428 | COVINGTON | Bradford County, PA | Gas Property | Feb 2024 |
| 1429 | COVINGTON PROSPECT PAD R (WATKINS) 1 | Tioga County, PA | Gas Property | Feb 2024 |
| 1430 | COWDEN | Washington County, PA | Oil & Gas Property | Jan 2021 |
| 1431 | COWDEN | Washington County, PA | Oil & Gas Property | Feb 2024 |
| 1432 | COWDEN | Washington County, PA | Oil & Gas Property | Jun 2021 |
| 1433 | COWDEN WILLIAM UNIT | Washington County, PA | Gas Property | Feb 2024 |
| 1434 | COYLE BRA | Bradford County, PA | Gas Property | Feb 2024 |
| 1435 | COYLE SOUTH 1 | Susquehanna County, PA | Gas Property | Feb 2024 |
| 1436 | COYNE-SLAGLE UNIT | Venango County, PA | Gas Property | Dec 2023 |
| 1437 | COYOTE RUN | Bradford County, PA | Gas Property | Feb 2024 |
| 1438 | COZY | Crawford County, PA | Gas Property | Dec 2021 |
| 1439 | CP 1H | Washington County, PA | Gas Property | Feb 2024 |
| 1440 | CP 3H | Washington County, PA | Gas Property | Feb 2024 |
| 1441 | CP 5H | Washington County, PA | Gas Property | Feb 2024 |
| 1442 | CP FOGLE F | Forest County, PA | Oil Property | Dec 2023 |
| 1443 | CP UNIT | Venango County, PA | Gas Property | Dec 2022 |
| 1444 | CP UNIT | Venango County, PA | Oil & Gas Property | Dec 2023 |
| 1445 | CRAFT C | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1446 | CRAIG | Erie County, PA | Oil & Gas Property | Dec 2023 |
| 1447 | CRAIG LASH UNIT | Westmoreland County, PA | Gas Property | Feb 2024 |
| 1448 | CRAIG NT | Indiana County, PA | Gas Property | Dec 2023 |
| 1449 | CRAIGE | Susquehanna County, PA | Gas Property | Feb 2024 |
| 1450 | CRAIN | Bradford County, PA | Gas Property | Feb 2024 |
| 1451 | CRAMER | Susquehanna County, PA | Gas Property | Feb 2024 |
| 1452 | CRANE | Bradford County, PA | Gas Property | Feb 2024 |
| 1453 | CRANE J 0 | Susquehanna County, PA | Gas Property | Feb 2024 |
| 1454 | CRANK 03 067 | Bradford County, PA | Gas Property | Sep 2023 |
| 1455 | CRANRUN | Bradford County, PA | Gas Property | Feb 2024 |
| 1456 | CRATTY | Butler County, PA | Gas Property | Feb 2024 |
| 1457 | CRATTY B UNIT 1H | Butler County, PA | Gas Property | Feb 2024 |
| 1458 | CRAVAT COAL B UNIT | Washington County, PA | Gas Property | Feb 2024 |
| 1459 | CRAWFORD | Elk County, PA | Oil & Gas Property | Dec 2018 |
| 1460 | CRAWFORD | Clarion County, PA | Gas Property | Dec 2023 |
| 1461 | CRAWFORD | Bradford County, PA | Gas Property | Feb 2024 |
| 1462 | CRAWFORD | Mercer County, PA | Gas Property | Dec 2023 |
| 1463 | CREE | Greene County, PA | Oil & Gas Property | Feb 2024 |
| 1464 | CREIGHTON | Washington County, PA | Gas Property | Dec 2023 |
| 1465 | CREW-LEVICK (MCCOOL) | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1466 | CREWE | Armstrong County, PA | Gas Property | Dec 2023 |
| 1467 | CRICK | Clarion County, PA | Oil & Gas Property | Dec 2020 |
| 1468 | CRIMALDI | Cambria County, PA | Gas Property | Dec 2023 |
| 1469 | CRISPEN H | Mercer County, PA | Gas Property | Dec 2023 |
| 1470 | CRITZER | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1471 | CROASMUN | Cambria County, PA | Gas Property | Dec 2023 |
| 1472 | CROCKER | Warren County, PA | Gas Property | Dec 2021 |
| 1473 | CROFTCHECK | Fayette County, PA | Gas Property | Dec 2023 |
| 1474 | CROFTCHECK 1 | Fayette County, PA | Gas Property | Dec 2023 |
| 1475 | CROSBY | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 1476 | CROSBY 00 | Westmoreland County, PA | Gas Property | Dec 2023 |
| 1477 | CROSLEY | Clarion County, PA | Oil & Gas Property | Dec 2022 |
| 1478 | CROSS CREEK C | Washington County, PA | Oil & Gas Property | Feb 2024 |
| 1479 | CROSSETT | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1480 | CROSSGATES INC (FMLY J C RINN) | Indiana County, PA | Gas Property | Dec 2023 |
| 1481 | CROTALLO | Armstrong County, PA | Gas Property | Dec 2023 |
| 1482 | CROTHERS | Washington County, PA | Oil Property | Dec 2000 |
| 1483 | CROUSE MOR14 | Greene County, PA | Gas Property | Feb 2024 |
| 1484 | CROUSHORE | Fayette County, PA | Oil & Gas Property | Feb 2024 |
| 1485 | CROWL C | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 1486 | CROWLEY | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 1487 | CROWNOVER | Armstrong County, PA | Gas Property | Dec 2023 |
| 1488 | CROYLE 00 | Armstrong County, PA | Oil & Gas Property | Dec 2023 |
| 1489 | CRUM NV55 | Washington County, PA | Gas Property | Feb 2024 |
| 1490 | CRUTTENDEN | Tioga County, PA | Gas Property | Feb 2024 |
| 1491 | CRYSTAL | Bradford County, PA | Gas Property | Feb 2024 |
| 1492 | CRYTZER | Armstrong County, PA | Gas Property | Feb 2024 |
| 1493 | CUBBON | Venango County, PA | Oil Property | Dec 1997 |
| 1494 | CUBBON | Venango County, PA | Gas Property | Dec 2023 |
| 1495 | CUBBON | Venango County, PA | Oil & Gas Property | Dec 2023 |
| 1496 | CUBBON LUMBER CO | Warren County, PA | Gas Property | Dec 2023 |
| 1497 | CULBERTSON | Clarion County, PA | Oil & Gas Property | Dec 2020 |
| 1498 | CULBERTSON | Armstrong County, PA | Gas Property | Dec 2023 |
| 1499 | CUMBERLAND | Greene County, PA | Gas Property | Dec 2020 |
| 1500 | CUMMINGS 823 | Tioga County, PA | Gas Property | Feb 2024 |