应用体积驱油系数曲线评价油田注水效果

Evaluation of Oilfield Injection Effect Using Volumetric Sweep Efficiency Curve

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。

This paper reveals the inner relation of the recovery percent of reserves,oil displacement efficiency and volumetric sweep efficiency by using material balance equation and the displacement theory and the effect to injection caused by formation pressure and crude properties.There is a liner relationship between the recovery percent and volumetric sweep efficiency when water drive is at a relatively steady state.The application of practical production data demonstrates, in the evaluation of injection effect, this method can be more practical than that of water drive curves.