{"name":"Marathon Oil Company Drilling Activity in Karnes County, Texas","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/marathon-oil-company/texas/karnes","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":"TX","county":"Karnes","totalWells":2134,"producingWells":1774,"permits24mo":56,"spuds24mo":35,"ducCount":79,"topFormation":"Austin Chalk","rankInCounty":1,"firstPermitDate":"2006-09-26","lastPermitDate":"2026-06-09"}