Abstract: In order to dig the remaining oil of the layered reservoir with multi-oil-water systems during high-water-cut stage, where the dual contradictions in the horizontal and vertical directions are further intensified, the production is decreasing rapidly and it is difficult to stabilize production, a calculation model of non-piston water flooding based on the B-L oil drive theory is established. The model can rationally optimize the oil well fluid volume, regulate the underground flow field and achieve the equilibrium displacement of injected water. It indicates that the reasonable fluid volume of oil wells is influenced by both the dynamic and static factors such as reservoir properties and remaining oil distribution. The method can regulate the underground flow field effectively by reasonable adjustments of liquid production without additional investments, and provide new idea for "water control and oil stabilization" in high water-cut oil reservoirs, which is the most economical and effective method to improve development effects in old oilfields.