水驱特征曲线方法系统分类研究

水驱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基础的方法,目前国内外已形成70多种。在这些曲线中,有些曲线通过恒等变形后可转化为其他曲线,有些曲线的参数取特殊值后也可简化为另一种曲线。依据这些特点,将已有的水驱特征曲线划分为5层9大类组织结构,并给出了对应反演的含水率与采出程度组织结构图。该套系统分类图将为今后水驱特征曲线方法应用(包括编程)、优选、管理、研究提供理论基础。

A Systematic Classification of Waterflood-Characteristic-Curve Methods

As the most fundamental method for research of oilfield water cut, prediction of production index and calibration of recoverable reserves, the waterflood characteristic curve method comes to more than 70 types at home and abroad, among which some can be converted into others, and some can be simplified into another one by identical transforming and special parameter taking. This paper classifies the curves into a structure with five levels and nine types as well as corresponding inverse water cut and recovery percent diagram, which can be as a guide for the application (including programming), optimization, management and study of such characteristic curve methods in future.