{"name":"Phillips Petroleum Company Drilling Activity in Custer County, South Dakota","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/phillips-petroleum-company/southdakota/custer","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-09-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Phillips Petroleum Company","operatorSlug":"phillips-petroleum-company","state":"SD","county":"Custer","totalWells":1,"producingWells":0,"permits24mo":0,"spuds24mo":0,"ducCount":1,"topFormation":null,"rankInCounty":6,"firstPermitDate":"1957-01-14","lastPermitDate":"1957-01-14"}