驱替特征曲线法是研究油田含水规律、预测开采指标和标定可采储量最常用的方法,目前已形成50多种。在这些曲线中,筛选出能够描述不同形态的含水率与采出程度关系的曲线一直是油田开发工作者永恒的研究课题。通过对钟德康驱替特征曲线和Gao-Ⅰ驱替特征曲线特性的对比分析表明:两类水驱曲线均具备描述不同形态的含水率与采出程度关系曲线的特性,但前者无驱替特征曲线相对应,而后者有驱替特征曲线相对应,其应用范围更大,是最理想的驱替特征曲线。 Displacement curve method is the most commonly used method for studying the law of water cut in oilfields, predicting the mining index and recoverable reserves. At present, over 50 kinds have been formed. Among these curves, it is always an eternal research topic for oilfield developers to select a curve that can describe the relationship between the moisture content and the degree of recovery in different forms. By comparing the characteristics of Zhongde displacement and Gao-Ⅰ displacement characteristics, it is shown that both of the two types of water-flooding curves have the characteristics of describing the relationship between the water cut and the degree of recovery of different forms, but the former has no displacement characteristic curve Corresponding, while the latter has the corresponding displacement characteristics curve, its application is more extensive, is the most ideal displacement characteristic curve.