摘要
为定量表征三维空间内油水过渡带饱和度变化特征,提出了一种定量表征油藏油水过渡区饱和度分布的实用方法,即油藏毛管压力J函数-电测饱和度方法。该方法首先通过毛管压力的定义式,按照油藏过渡带的垂向位置来计算不同深度的毛管压力;然后结合井点孔渗数据,计算油藏毛管压力J函数;最后建立油藏毛管压力J函数与电测解释饱和度之间的预测关系式,计算三维空间内过渡区饱和度分布。文中以东海盆地花港组某油藏为例,对本文方法进行了应用与验证,结果表明本文方法计算结果与电测法结果吻合较好,说明本文方法是可行、有效的。
In order to quantitatively characterize oil saturation changes in a three-dementional zone of oil-water transition,a practical method has been developed,namely the technique of reservoir capillary pressure J function-electric log saturation.This method will firstly calculate capillary pressure at various vertical depthes in an oil-water transition zone of a reservoir by using the defining equation of capillary pressure,and then the reservoir capillary pressure J function is calculated by combining with the porosity and permeability data in wells.Finally,a predictation relationship is set up between J function and electric log saturation,by which the oil saturation distribution in a three-dementional zone of oil-water transition can be calculated.In a case of a Huagang Formation oil reservoir in East China Sea,this method is applied and verified,resulting in a good consistency between its calculated results and electric log results.This means that the practical method is feasible and effective.
出处
《中国海上油气》
CAS
北大核心
2011年第6期387-390,397,共5页
China Offshore Oil and Gas
关键词
油藏过渡带饱和度
定量表征方法
岩心毛管压力J函数
油藏毛管压力J函数
oil saturation in oil-water transition zones quantitative characterization method core capillary pressure J function reservoir capillary pressure J function
作者简介
鹿克峰，男，高级工程师，主要从事油藏工程研究。Email：lukf@cnooc．com．cn。地址：上海市徐汇区零陵路583号海洋石油夫厦（邮编：200030）。
