一、前言 储层的渗透率是评价一个储层性质的重要物性参数,而由渗透率导出的油水相对渗透率曲线则是油田开发、动态计算必不可少的基础资料。 四十年代末,普塞尔(Purcell)首创了用毛管力资料计算相对渗透率的理论基础及经典数学模型。此后,随着计算机技术的发展,这一方法受到了油藏工程师们极大的关注。因为就其速度快、成本低的特点而言,一旦建立了合理的数学模型,能够计算出 I. INTRODUCTION Permeability of reservoirs is an important physical parameter for evaluating the properties of a reservoir. The relative permeability curves of oil and water derived from permeability are the essential data for oilfield development and dynamic calculation. In the late 1940s, Purcell pioneered the theoretical basis and classical mathematical models for calculating relative permeability using capillary force data. Since then, with the development of computer technology, this method has been greatly concerned by reservoir engineers. Because of its speed, low cost characteristics, once established a reasonable mathematical model, be able to calculate