{"name":"Greylock Conventional Drilling Activity in Clearfield County, Pennsylvania","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/greylock-conventional/pennsylvania/clearfield","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-09-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Greylock Conventional","operatorSlug":"greylock-conventional","state":"PA","county":"Clearfield","totalWells":258,"producingWells":258,"permits24mo":0,"spuds24mo":0,"ducCount":0,"topFormation":"Marcellus","rankInCounty":5,"firstPermitDate":"1973-08-07","lastPermitDate":"2007-10-24"}