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水驱特征方程在国内油田已得到广泛的应用,确是一种行之有效的方法。本文主要讨论以下内容:(1)澄清在水驱特征方程的推导中,对出口端饱饱和度与平均饱和度的混淆;(2)导出水驱储量计算公式并阐明我国油田常用的计算储量公式存在的问题;(3)导示稳产年限计算公式并分析影响稳产年限的主要因素;(4)利用水驱特征方程(Ⅱ)计算油水相对渗透率曲线。
The waterflooding characteristic equation has been widely used in the domestic oilfield, and indeed it is an effective method. The main contents of this paper are as follows: (1) To clarify the confusion of saturation and average saturation at the outlet of waterflooding characteristic equation; (2) To derive the calculation formula of waterflooding reserves and to clarify the formula (3) To show the calculation formula of stable production years and analyze the main factors that affect the stable production years; (4) To calculate the relative oil-water permeability curve by the water-flooding characteristic equation (II).