| 1501 | CREWE | Armstrong County, PA | Gas Property | Dec 2023 |
| 1502 | CRICK | Clarion County, PA | Oil & Gas Property | Dec 2020 |
| 1503 | CRIMALDI | Cambria County, PA | Gas Property | Dec 2023 |
| 1504 | CRISPEN H | Mercer County, PA | Gas Property | Dec 2023 |
| 1505 | CRITZER | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1506 | CROASMUN | Cambria County, PA | Gas Property | Dec 2023 |
| 1507 | CROCKER | Warren County, PA | Gas Property | Dec 2023 |
| 1508 | CROFTCHECK | Fayette County, PA | Gas Property | Dec 2023 |
| 1509 | CROFTCHECK 1 | Fayette County, PA | Gas Property | Dec 2023 |
| 1510 | CROSBY | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 1511 | CROSBY 00 | Westmoreland County, PA | Gas Property | Dec 2023 |
| 1512 | CROSLEY | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 1513 | CROSS CREEK C | Washington County, PA | Oil & Gas Property | Sep 2024 |
| 1514 | CROSSETT | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1515 | CROSSGATES INC (FMLY J C RINN) | Indiana County, PA | Gas Property | Dec 2023 |
| 1516 | CROTALLO | Armstrong County, PA | Gas Property | Dec 2023 |
| 1517 | CROTHERS | Washington County, PA | Oil Property | Dec 2000 |
| 1518 | CROUSE MOR14 | Greene County, PA | Gas Property | Sep 2024 |
| 1519 | CROUSHORE | Fayette County, PA | Oil & Gas Property | Sep 2024 |
| 1520 | CROWL C | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 1521 | CROWLEY | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 1522 | CROWNOVER | Armstrong County, PA | Gas Property | Dec 2023 |
| 1523 | CROYLE 00 | Armstrong County, PA | Oil & Gas Property | Dec 2023 |
| 1524 | CRUM NV55 | Washington County, PA | Gas Property | Sep 2024 |
| 1525 | CRUTTENDEN | Tioga County, PA | Gas Property | Sep 2024 |
| 1526 | CRYSTAL | Bradford County, PA | Gas Property | Sep 2024 |
| 1527 | CRYTZER | Armstrong County, PA | Gas Property | Sep 2024 |
| 1528 | CSI 2H | Bradford County, PA | Gas Property | Sep 2024 |
| 1529 | CSI 5H | Bradford County, PA | Gas Property | Sep 2024 |
| 1530 | CUBBON | Venango County, PA | Oil & Gas Property | Dec 2023 |
| 1531 | CUBBON | Venango County, PA | Gas Property | Dec 2023 |
| 1532 | CUBBON | Venango County, PA | Oil Property | Dec 1997 |
| 1533 | CUBBON LUMBER CO | Warren County, PA | Gas Property | Dec 2023 |
| 1534 | CULBERTSON | Clarion County, PA | Oil & Gas Property | Dec 2020 |
| 1535 | CULBERTSON | Armstrong County, PA | Gas Property | Dec 2023 |
| 1536 | CUMBERLAND | Greene County, PA | Gas Property | Dec 2020 |
| 1537 | CUMMINGS 823 | Tioga County, PA | Gas Property | Sep 2024 |
| 1538 | CUMMINGS LUMBER 01 081 | Bradford County, PA | Gas Property | Sep 2024 |
| 1539 | CUNDARI | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1540 | CUNNINGHAM | Venango County, PA | Oil Property | Dec 2014 |
| 1541 | CUPPER | Tioga County, PA | Gas Property | Sep 2024 |
| 1542 | CURRY | Washington County, PA | Oil & Gas Property | Dec 2023 |
| 1543 | CURTIN | Wyoming County, PA | Gas Property | Sep 2024 |
| 1544 | CURTIN | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1545 | CURTIN UNIT | Bradford County, PA | Gas Property | Sep 2024 |
| 1546 | CURTIS | Bradford County, PA | Gas Property | Sep 2024 |
| 1547 | CURTIS | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1548 | CURTIS | Erie County, PA | Gas Property | Dec 2023 |
| 1549 | CURTIS F POOLE | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 1550 | CURTIS LOT | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 1551 | CUSICK H | Mercer County, PA | Gas Property | Dec 2022 |
| 1552 | CUTHBERTSON BRA | Bradford County, PA | Gas Property | Sep 2024 |
| 1553 | CW MORRIS | Crawford County, PA | Gas Property | Dec 2023 |
| 1554 | CYNTHIA BOND | Indiana County, PA | Gas Property | Dec 2023 |
| 1555 | CYNTHIA M KNISPEL A | Lycoming County, PA | Gas Property | Sep 2024 |
| 1556 | CYPHER | Butler County, PA | Gas Property | Sep 2024 |
| 1557 | CYPHER | Clarion County, PA | Gas Property | Dec 2023 |
| 1558 | CYPHERT | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 1559 | CZECH UNIT | Warren County, PA | Gas Property | Dec 2006 |
| 1560 | CZESNOWSKI | Erie County, PA | Gas Property | Dec 2023 |
| 1561 | CZOP UNIT | Sullivan County, PA | Gas Property | Sep 2024 |
| 1562 | D & J FARMS UNIT | Bradford County, PA | Gas Property | Sep 2024 |
| 1563 | D A WILCOX | Warren County, PA | Gas Property | Dec 2023 |
| 1564 | D B TOWNSEND | Armstrong County, PA | Gas Property | Dec 2023 |
| 1565 | D B TRAVIS | Armstrong County, PA | Gas Property | Dec 2023 |
| 1566 | D BELL | Clarion County, PA | Gas Property | Dec 2023 |
| 1567 | D BERRY | Susquehanna County, PA | Gas Property | Sep 2024 |
| 1568 | D C BLAIR | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 1569 | D C SMITH | Armstrong County, PA | Gas Property | Dec 2023 |
| 1570 | D CASKEY | Elk County, PA | Gas Property | Dec 2023 |
| 1571 | D D MILLER M-705 69 | Clearfield County, PA | Gas Property | Dec 2023 |
| 1572 | D DEMA | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 1573 | D E MAUK | Indiana County, PA | Gas Property | Dec 2023 |
| 1574 | D EVANS | Westmoreland County, PA | Oil & Gas Property | Dec 2015 |
| 1575 | D G WERTZ | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 1576 | D GRANTHAM | Mercer County, PA | Gas Property | Dec 2023 |
| 1577 | D HAGERTY | Fayette County, PA | Gas Property | Dec 2023 |
| 1578 | D IAMS 59 | Greene County, PA | Gas Property | Sep 2024 |
| 1579 | D J BRAUGHLER | Indiana County, PA | Gas Property | Dec 2023 |
| 1580 | D JOHNSON | Warren County, PA | Gas Property | Dec 2023 |
| 1581 | D KIN | Indiana County, PA | Gas Property | Dec 2023 |
| 1582 | D L BRUNER | Armstrong County, PA | Gas Property | Dec 2023 |
| 1583 | D L CLOWSER | Armstrong County, PA | Gas Property | Dec 2023 |
| 1584 | D LEWIS | Armstrong County, PA | Oil & Gas Property | Dec 2023 |
| 1585 | D MACURDY | Butler County, PA | Gas Property | Dec 2023 |
| 1586 | D MARSH | Indiana County, PA | Gas Property | Dec 2023 |
| 1587 | D PERRINE | Mercer County, PA | Oil Property | Dec 2023 |
| 1588 | D SHAW | Westmoreland County, PA | Gas Property | Dec 2023 |
| 1589 | D SHEARER | Indiana County, PA | Gas Property | Dec 2023 |
| 1590 | D SHERASKEY 00 | Washington County, PA | Gas Property | Dec 2023 |
| 1591 | D SHIREY | Clarion County, PA | Gas Property | Dec 2023 |
| 1592 | D SPE | Washington County, PA | Gas Property | Dec 2023 |
| 1593 | D SWANK | Armstrong County, PA | Oil & Gas Property | Dec 2023 |
| 1594 | D T MITCHELL | Clearfield County, PA | Gas Property | Dec 2023 |
| 1595 | D THARP 591 | Greene County, PA | Gas Property | Sep 2024 |
| 1596 | D V HUTCHI | Venango County, PA | Gas Property | Dec 2023 |
| 1597 | D W & M B OBERLIN FMLY L M OBERLIN | Indiana County, PA | Gas Property | Dec 2023 |
| 1598 | D W LAWSON HE | Armstrong County, PA | Gas Property | Dec 2023 |
| 1599 | D W RARAIGH | Indiana County, PA | Gas Property | Dec 2023 |
| 1600 | D WARCHOLAK | Armstrong County, PA | Oil & Gas Property | Dec 2023 |