{"name":"Northern Illinois Gas Company Drilling Activity in Mercer County, Illinois","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/northern-illinois-gas-company/illinois/mercer-il","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-08-06","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Northern Illinois Gas Company","operatorSlug":"northern-illinois-gas-company","state":"IL","county":"Mercer","totalWells":15,"producingWells":0,"permits24mo":0,"spuds24mo":0,"ducCount":0,"topFormation":null,"rankInCounty":3,"firstPermitDate":"1970-01-01","lastPermitDate":"1984-10-24"}