油藏相对渗透率求取方法

Methods for obtaining relative permeability of reservoir

油藏相对渗透率是油田开发设计和分析的一个重要的基础地层参数 ,它与油藏的含油饱和度、地层渗透率一样 ,是油藏描述中不可缺少的参数。文章探讨如何准确测得真正能代表油藏实际情况的相对渗透率。通过几种实测和解析法求取渗透率的方法的比较和试验 ,认为贝叶斯法能综合利用现场测量值、岩心资料、理论估算等资料 ,综合各方面的因素 ,从而使解释结果更符合实际情况。

Relative permeability of reservoir is an important basic formation parameter to oilfield developing design and analysis. As same as oil saturation and formation permeability,it is one of necessary parameters in reservoir description. Thus,it is especially important to measure relative permeability which can represent practical conditions of reservoir. The paper compares actual measurement and analytic methods for obtaining permeability. Experiments prove Bayes method can comprehensively utilize on-site measurement valves,core data and recent theory estimation data etc.,and make interpreted results more practical.