{"name":"Marathon Oil Company Drilling Activity in Kalkaska County, Michigan","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/marathon-oil-company/michigan/kalkaska","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-07-02","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Marathon Oil Company","operatorSlug":"marathon-oil-company","state":"MI","county":"Kalkaska","totalWells":21,"producingWells":2,"permits24mo":0,"spuds24mo":0,"ducCount":0,"topFormation":"Antrim","rankInCounty":5,"firstPermitDate":"1943-07-26","lastPermitDate":"2014-01-08"}