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利用物质平衡方程和油水驱替理论，揭示了采出程度、驱油效率、体积驱油系数之间内在的关系，并探讨了地层压力及原油性质对注水效果的影响，当出现稳定水驱时，油藏的采出程度与体积驱油系数呈线性关系。油田实际的生产资料应用表明，在评价油田注水效果方面，该方法比水驱曲线法更能客观地反映实际。
Using the material balance equation and oil-water flooding theory, the relationship between recovery rate, flooding efficiency and displacement coefficient is revealed. The effects of formation pressure and crude oil on flooding effect are discussed. When steady water flooding occurs The degree of recovery of the reservoir is linear with the displacement coefficient of the reservoir. The practical application of production data in the field shows that this method can objectively reflect the actual situation in evaluating the water injection effect of the oilfield than the water flooding curve method.