低渗透油藏渗流启动压力梯度研究  

The study of actuating pressure gradient of the fluid flow in low permeable reservoir

作　　者：彭春洋[1] 欧阳云丽[1] 柯文丽[1] 祁丽莎[1] 

机构地区：[1]长江大学石油工程学院

出　　处：《油气地球物理》2012年第1期64-66,共3页Petroleum Geophysics

基　　金：国家重点基础研究发展规划基金资助项目(2003CB214606)

摘　　要：选取11块不同渗透率的低渗透岩心(渗透率均小于30mD)进行了室内单相渗流实验。对实验数据进行回归分析,获得了低渗透岩心的启动压力梯度与流度的关系式。根据所得关系式,绘制了低渗透油藏渗流流态判断图版。据此可确定流体在低渗透岩心中的流态,为合理开发低渗透油藏提供理论依据。The single phase flow of the chosen l l low permeable cores which have different permeability （their permearbility were all less than 30roD） were tested in house. The relational expressions of the actuating pressure gradient and fluidity were obtained after the regression analysis of the tested data was done. The chart to decide the flow pattern was drawn according to the obtained expressions. The flow patterns in low permeability core can be decided by the chart, it is a theoretical foundation to reasonably develop low permeable reservoir.

关 键 词：低渗透油藏 启动压力梯度 非达西流 判断图版 

分 类 号：TE348[石油与天然气工程—油气田开发工程]