{"name":"Petroleum Development Drilling Activity in Big Horn County, Montana","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/petroleum-development/montana/bighorn","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-08-06","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Petroleum Development","operatorSlug":"petroleum-development","state":"MT","county":"Big Horn","totalWells":19,"producingWells":0,"permits24mo":0,"spuds24mo":0,"ducCount":2,"topFormation":null,"rankInCounty":6,"firstPermitDate":"2001-04-11","lastPermitDate":"2002-04-17"}