{"name":"Forest Oil Drilling Activity in Clark County, Illinois","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/forest-oil/illinois/clark-il","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-09-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Forest Oil","operatorSlug":"forest-oil","state":"IL","county":"Clark","totalWells":489,"producingWells":0,"permits24mo":0,"spuds24mo":0,"ducCount":0,"topFormation":"New Albany","rankInCounty":2,"firstPermitDate":"1942-03-10","lastPermitDate":"2006-02-14"}