{"name":"Hess Corporation Drilling Activity in Contra Costa County, California","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/hess/california/contra-costa","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-07-02","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Hess Corporation","operatorSlug":"hess","state":"CA","county":"Contra Costa","totalWells":13,"producingWells":2,"permits24mo":0,"spuds24mo":0,"ducCount":11,"topFormation":null,"rankInCounty":4,"firstPermitDate":"1962-05-09","lastPermitDate":"1998-09-30"}