nylon salt
1.Designning well tube and drill-hole diameter in order to increase thickness of both annular packing gravel and water-resisting clay, nylon net packing around well tube filters, designing filter layer on the boundary between packing gravel and water-resisting clay and ramming the gravel by working the piston into the well after gravel packing completion and the filling clay for salt-water resisting etc. we succeeded in constructing 3 drinking-water wells in Minqin County, proved the affectivity and feasibility of using it and giving a certain technical demonstration of construction of drinking-water well in the same similar to this area.
