{"name":"Casillas Petroleum Drilling Activity in Haskell County, Kansas","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/casillas-petroleum/kansas/haskell-ks","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":"Haskell","totalWells":267,"producingWells":243,"permits24mo":0,"spuds24mo":2,"ducCount":17,"topFormation":null,"rankInCounty":5,"firstPermitDate":"1951-10-25","lastPermitDate":"2019-11-01"}