{"name":"Union Oil Co. Of California Drilling Activity in Midland County, Michigan","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/union-oil-company-of-california/michigan/midland-mi","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-08-06","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Union Oil Co. Of California","operatorSlug":"union-oil-company-of-california","state":"MI","county":"Midland","totalWells":352,"producingWells":15,"permits24mo":0,"spuds24mo":0,"ducCount":0,"topFormation":"Antrim","rankInCounty":1,"firstPermitDate":"1928-06-05","lastPermitDate":"2008-03-12"}