{"name":"Coronado Oil Company Drilling Activity in Niobrara County, Wyoming","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/coronado-oil-company/wyoming/niobrara","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-08-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Coronado Oil Company","operatorSlug":"coronado-oil-company","state":"WY","county":"Niobrara","totalWells":57,"producingWells":0,"permits24mo":0,"spuds24mo":0,"ducCount":54,"topFormation":"Niobrara- Mowry","rankInCounty":5,"firstPermitDate":"1935-12-20","lastPermitDate":"1982-01-27"}