{"name":"Casillas Petroleum Drilling Activity in Greeley County, Kansas","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/casillas-petroleum/kansas/greeley","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-08-06","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Casillas Petroleum","operatorSlug":"casillas-petroleum","state":"KS","county":"Greeley","totalWells":20,"producingWells":18,"permits24mo":0,"spuds24mo":0,"ducCount":1,"topFormation":null,"rankInCounty":8,"firstPermitDate":"1976-02-17","lastPermitDate":"2007-07-31"}