Abstract: It is difficult to widely develop remaining oil in the high heterogeneous reservoirs by using the current exploitation theory and techniques.A new method and oil displacement mechanism for enhancing oil recovery of such reservoirs were proposed by using synchronically gathered energy equi-fluidity oil displacement method.The equi-fluidity design was used for the liquid displacing diversion,energy and flow accumulation,to obtain much remaining oil and great benefit by saving energy,injected water,injected agent and funds.The experiment results of numerical simulation on cores with different permeability from 0.1μm² to 3.0μm² show that this method can enhance oil recovery by 60%～80%.This method was effectively proved on site.