应用存水率和水驱指数标准曲线预测油田的配注量

Prediction of the Volume of Injection Allocation Using Standard Curves of Water Storage Rate and Water Drive Index

存水率和水驱指数是综合评价注水开发效果的两项重要指标．从存水率和水驱指数的定义出发，结合水驱特征曲线，给出了存水率和水驱指数表达式．并以小型断块油田为例，指出当油田实际存水率和水驱指数的点落在标准曲线上和附近时，开发效果向实际规划的目标方向发展，油田目前的配注合理；如果实际存水率点落在标准曲线的下方，说明指标偏低，开发效果较差．同时还讨论了如何利用水驱指数标准曲线预测注水开发油田的配注量．

Water storage rate and water drive index are two important targets for evaluating the effect of water injection.According to the definitions of water storage rate and water drive index,and water drive characteristic curve,the expressions of water storage rate and water drive index are given.The study of a small fault block oilfield shows that if the points of actual water storage rate and water drive index are on or near to respective standard curves,the volume of injection allocation is suitable,and the development effect is desirable; if the point of water storage rate is far from its standard curve,the index is on the low side,and the volume of injection allocation is not suitable.It is also discussed how to predict the volume of injection allocation by using the standard curve of water drive index in oilfield development.