Abstract: In accordance with the characteristics of fast water flooding,production decline andtom water energy in Bashituo overpressured,fractured reservoirs,detail geological study wasweak bot-carried outandFiveunderstandings weregained about reservoir fracture development and oil and water movement.modes of water floodingwere proposed.Implementation results of water pump,turn,solutionmeaSureSfor thereservoir weresummarized and the plan for improving development was proposed.