Abstract: With Guan 195 fault block came into comprehensive treatment and water controlled and oil production stabilized stage, sand production in oil well become more serious which have affected normal producing and producing efficiency of oil well.To the formation, the factors from sedimentary microfacies, formation core and comparation of formation sand production and so on, have been analyzed.The sand production mechanism, main sand production layer and main oil production layer of this fault block are been recognized basically and provide scientific accordance for sand control.Through optimizing and simplifying layer, optimum seeking well and plugging non-main oil layer, the test by high-pressure gravel packing sand control technique with packer has get successful.The technique is a breakthrough in sand control on long interval siltstone sand production formation.