{"name":"John M Denman Oil Drilling Activity in Chautauqua County, Kansas","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/john-m-denman-oil/kansas/chautauqua-ks","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-09-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"John M Denman Oil","operatorSlug":"john-m-denman-oil","state":"KS","county":"Chautauqua","totalWells":169,"producingWells":12,"permits24mo":0,"spuds24mo":0,"ducCount":13,"topFormation":"Excello-Mulky","rankInCounty":7,"firstPermitDate":"1962-11-15","lastPermitDate":"2012-08-06"}