Application of Moving Water Gravel Filling Technology in the Construction of Laoling Geothermal Well in Shandong Province
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.
万方数据
维普
