{"name":"Shell Oil Company Drilling Activity in Mason County, Michigan","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/shell-oil-company/michigan/mason-mi","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-09-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Shell Oil Company","operatorSlug":"shell-oil-company","state":"MI","county":"Mason","totalWells":15,"producingWells":1,"permits24mo":0,"spuds24mo":0,"ducCount":0,"topFormation":"Antrim","rankInCounty":5,"firstPermitDate":"1974-11-06","lastPermitDate":"1988-07-05"}