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水驱曲线法是油藏工程中的一个重要方法,它不仅能够预测水驱油藏的开发动态,而且也能预测油田的采收率。因此,在实际工作中得到了广泛的应用。我们将水驱曲线划分为甲、乙和丙三种类型,其中的丙类型是由 Iraj Ershaghi提出的。在文中对水驱曲线的三种关系式作了对比,并提出了判断直线段出现时间的方法。实际资料的应用表明,对于预测油田的采收率,甲型和乙型水驱曲线比丙型更为准确可靠。
Water flooding curve method is an important method in reservoir engineering. It not only can predict the development of waterflooding reservoirs, but also predict oil recovery. Therefore, in practical work has been widely used. We divide the water flooding curve into three types A, B and C, of which the type C is proposed by Iraj Ershaghi. In this paper, the author compares the three relations of the water flooding curve and puts forward the method of judging the appearance time of the straight line segment. The application of the actual data shows that the curve of type A and type B water flushes is more accurate and reliable than type C for predicting oil recovery.