{"name":"Black Oak Exploration Drilling Activity in Sherman County, Kansas","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/black-oak-exploration/kansas/sherman-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":"Black Oak Exploration","operatorSlug":"black-oak-exploration","state":"KS","county":"Sherman","totalWells":7,"producingWells":4,"permits24mo":1,"spuds24mo":1,"ducCount":2,"topFormation":"Niobrara East","rankInCounty":7,"firstPermitDate":"2013-07-22","lastPermitDate":"2025-10-23"}