{"name":"Seneca Resources Drilling Activity in Jefferson County, Pennsylvania","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/seneca-resources/pennsylvania/jefferson-pa","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-08-06","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Seneca Resources","operatorSlug":"seneca-resources","state":"PA","county":"Jefferson","totalWells":236,"producingWells":155,"permits24mo":0,"spuds24mo":0,"ducCount":1,"topFormation":"Marcellus","rankInCounty":4,"firstPermitDate":"1972-06-28","lastPermitDate":"2013-12-02"}