摘要
结合弹性力学和渗流理论,推导了基于球体模型的渗透率有效应力系数的数学表达式,并基于稳态法,以氮气为实验介质,对低渗致密砂岩岩样进行了渗透率测试,利用二元线性回归计算渗透率有效应力系数,所得结果与理论值相近,证实了理论模型的可靠性。
By using elastic mechanics and percolation theory, the expression of effective stress coefficient for permeability is deduced based on sphere model. The permeability of low-permeability tight sandstone core is tested using steady-state method, nitrogen as medium. And binary linear regression is applied to calculation of the effective stress coefficient for permeability. The result is approximate to the the- oretical value, indicating the theoretical model is reliable and applicable.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2012年第3期334-336,共3页
Xinjiang Petroleum Geology
基金
国家863项目(2007AA06Z209)
关键词
有效应力
渗透率
有效应力系数
球体模型
effective stress
permeability
effective stress coefficient
sphere model
作者简介
丁艳艳（1983-），女，吉林公主岭人，在读硕士研究生，油气田开发，（Tel）13999513299（E-mail）172255923@qq．com．
