Oil & gas wells in Pennsylvania
224,189 catalogued wellbores in Pennsylvania, from the state regulator's registry plus the federal orphaned-well inventory.
Dataset updated . Derived from public data sources.
Catalogued wells
224,189
Active
101,804
Plugged
55,427
Documented orphans
27,259
Largest operators active in Pennsylvania
| Operator | Wells | Active | Plugged | States |
|---|---|---|---|---|
| Chevron USA | 65,303 | 13,921 | 43,648 | AL AR CA CO KS LA MI ND NM OH OK PA UT WV WY |
| Diversified Prod | 21,609 | 17,980 | 406 | PA |
| Hilcorp Energy | 19,950 | 15,820 | 2,086 | AL CO LA MS NM OH PA WY |
| Eog Resources | 16,762 | 2,897 | 4,127 | AR CA CO KS LA MI MS MT ND NM NY OH OK PA UT WV WY |
| Pa Dep Ofc Oil & Gas Mgmt | 12,967 | 0 | 3,391 | PA |
| Noble Energy | 10,764 | 1,646 | 6,368 | CA CO IL KS LA MT NM OK PA UT WV WY |
| Texaco | 10,522 | 267 | 9,120 | AL AR CA CO IL KS KY LA MI MS MT ND NY OH OK PA UT |
| Quaker State | 9,033 | 0 | 8,755 | NY PA WV |
| Marathon Oil | 8,999 | 2,695 | 5,360 | AR CA CO IL KS KY LA MI MS MT ND NM OK PA UT WV WY |
| Ows Acquisition | 7,259 | 7,109 | 59 | OH PA WV |
Well counts are the operator’s national totals; state placeholder records are excluded. See methodology.
Counties in Pennsylvania
Counties with 25 or more catalogued wells.
McKean38,160Warren22,656Venango20,147Indiana14,641Armstrong11,955Washington10,647Westmoreland9,747Forest9,226Greene8,349Jefferson8,046Clearfield6,758Elk6,324Clarion6,242Butler6,065Crawford5,443Fayette4,999Mercer4,790Erie4,762Bradford4,066Susquehanna3,231Allegheny2,896Potter2,807Tioga2,535Lycoming2,080Centre1,615Clinton1,458Cambria975Beaver729Wyoming701Lawrence620Sullivan498Cameron403Somerset314Bedford95Lackawanna58Wayne28Luzerne27