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通过注采平衡关系以及投入和产出的平衡关系,推导出注水开发油田油井在高含水期的经济含水极限计算公式,并利用相对渗透率曲线和平面径向流的水驱油推进方程式,研究综合含水率在关井前后随时间的变化,从而评价关井的效果。通过现场实际生产数据计算,说明该方法是可行的。
Based on the equilibrium relationship between injection and production as well as the balance between input and output, the formula for calculating the economic water cut-off limit of oil well in waterflooding oilfield at high water cut-off time is deduced. By using the relative permeability curve and the radial water flow propulsion equation, Integrated water cut in the time before and after shut-in changes in order to assess the effect of shut-in. Calculated by the actual production data in the field, it shows that this method is feasible.