Based　on　regional　geology,　geothermal　geology　and　integrated　geophysical　exploration　results,　the　GR1　hot　dry　rock　exploration　well　was　completed　in　the　central　part　of　Qiabuqia　Town　in　the　Gonghe　basin.　The　GR1　well　is　the　highest　temperature　hot-dry　rock　exploration　well　in　China,　which　has　laid　an　important　foundation　for　China＇s　first　EGS　demonstration　project.　The　temperature　measurement　results　show　that　the　temperature　at　the　depth　of　2500　m　is　ISOt,　entering　into　the　hot　dry　rock　section.　The　temperature　of　the　bottom　hole　at　the　depth　of　3705　m　is　236t.　The　average　geothermal　gradient　of　2500-3705　m　is　1\A°CI　km,　which　is　higher　than　that　of　the　other　3　hot　dry　rock　exploration　wells.　At　2800-3705　m　of　GR1　well　the　geothermal　gradient　is　higher　than　80t:/km.　The　exploration　results　show　that　the　depth　of　the　hot　dry　rock　is　2104.31-2500　m,　which　is　oval-shaped　in　the　east-west　direction,　with　an　area　of　246.90　km2.　The　evaluation　results　show　that　the　total　theoretical　resources　of　the　Qiabuqia　hot　dry　rock　is　1638.16EJ　in　the　depth　of　3-5　km,　equivalent　to　55.909　billion　tons　of　standard　coal.　©　2018　Geology　in　China.　All　rights　reserved.