At present,the completion method of sandstone geothermal well in Laoling area of Shandong province is 60 mesh wire-wrapped screen pipe.In the process of operation,the formation sand in the thermal reservoir has a strong abrasive effect on the wire-wound screen,so that the wire-wound screen loses its filtering effect and sand control function.This paper proposes the filling gravel completion technology,aiming at the sandstone thermal reservoir in Laoling area,the gravel filling parameters of 16-30 mesh screen and 20 μm gravel diameter were used to fill the well.The water yield of geothermal well is maintained at 95 m3/h for a long time,and there is no sand production in the well.which effectively ensures the normal operation of sandstone geothermal well,and plays a reference role for sand control of geothermal well in Laoling area,Shandong province.
维普
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