{"name":"Marathon Oil Company Drilling Activity in Harper County, Kansas","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/marathon-oil-company/kansas/harper-ks","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-07-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Marathon Oil Company","operatorSlug":"marathon-oil-company","state":"KS","county":"Harper","totalWells":48,"producingWells":21,"permits24mo":0,"spuds24mo":0,"ducCount":25,"topFormation":null,"rankInCounty":6,"firstPermitDate":"1976-11-18","lastPermitDate":"1988-06-14"}