{"name":"Core Energy Drilling Activity in Otsego County, Michigan","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/core-energy/michigan/otsego","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-09-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Core Energy","operatorSlug":"core-energy","state":"MI","county":"Otsego","totalWells":106,"producingWells":77,"permits24mo":2,"spuds24mo":0,"ducCount":0,"topFormation":"Antrim","rankInCounty":4,"firstPermitDate":"1971-08-31","lastPermitDate":"2025-03-28"}