{"name":"Graves Drilling Drilling Activity in Custer County, South Dakota","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/graves-drilling/southdakota/custer","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-08-06","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Graves Drilling","operatorSlug":"graves-drilling","state":"SD","county":"Custer","totalWells":1,"producingWells":0,"permits24mo":0,"spuds24mo":0,"ducCount":1,"topFormation":null,"rankInCounty":6,"firstPermitDate":"1977-09-23","lastPermitDate":"1977-09-23"}