{"name":"Mewbourne Oil Company Drilling Activity in Ellis County, Oklahoma","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/mewbourne-oil-company/oklahoma/ellis","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-07-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Mewbourne Oil Company","operatorSlug":"mewbourne-oil-company","state":"OK","county":"Ellis","totalWells":449,"producingWells":345,"permits24mo":36,"spuds24mo":38,"ducCount":85,"topFormation":"Cleveland","rankInCounty":2,"firstPermitDate":"1985-09-04","lastPermitDate":"2026-04-15"}