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注水开发是目前油气田开发中保持地层压力,提高油气田产量的主要方法.注入到地层中的合理水量直接影响着油田开发效果.为确定合理注水量,本文根据Φ函数理论建立了一套用于合理注水量确定的计算方法.Φ函数又称范函数(即水相分流量关于的导数)是累积注入孔隙体积倍数的倒数.累积注入孔隙体积倍数主要受到孔隙度,含油面积,有效厚度、含水率、含水上升,累注水等因素的影响,在考虑这些因素的影响之后所建立的方法能够保证所确定的注水量为合理注水量.
Water injection development is the main method to maintain formation pressure and increase oil and gas field output in the current oil and gas field development.A reasonable amount of water injected into the strata directly affects the oilfield development effect.In order to determine the reasonable water injection volume, The method of determining the amount of water The Φ function, also known as the van der Waals flow, is the reciprocal of the cumulative injected pore volume multiples The cumulative injected pore volume multiples are mainly affected by porosity, oil area, effective thickness, water cut, Water up, tired water injection and other factors, after taking into account the impact of these factors, the method established to ensure that the determined amount of water injection is a reasonable amount of water.