页岩储层应力敏感性实验研究  

Experimental Study on Stress Sensitivity of Shale Reservoir

作　　者：王广东 Wang Guangdong(CNPC International(Turkmenistan)Amu Darya Gas Company,Beijing,100028)

机构地区：[1]中油国际(土库曼斯坦)阿姆河天然气公司,北京100028

出　　处：《当代化工研究》2022年第16期24-26,共3页Modern Chemical Research

摘　　要：通过页岩岩心应力敏感实验,从机理上分析页岩储层具有强应力敏感性的物理依据,基于有效应力与孔隙压力的转换关系,建立了渗透率应力敏感系数与孔隙压力变化量之间的函数关系,得到了关于压力的变渗透率应力敏感系数,证实了川南地区页岩储层的强应力敏感特性(应力敏感系数变化范围为5.0×10^(-3)~0.16MPa^(-1)),为研究川南地区页岩储层应力敏感特性提供物理基础。Through the stress sensitivity experiment of shale core,the physical basis of strong stress sensitivity of shale reservoir is analyzed from the mechanism.Based on the conversion relationship between effective stress and pore pressure,the functional relationship between permeability stress sensitivity coefficient and pore pressure variation is established,and the variable permeability stress sensitivity coefficient about pressure is obtained,which confirms the strong stress sensitivity characteristics of shale reservoir in southern Sichuan(the variation range of stress sensitivity coefficient is 5.0×10^(-3)~0.16MPa^(-1)),which provides a physical basis for studying the stress sensitive characteristics of shale reservoirs in southern Sichuan.

关 键 词：页岩气 应力敏感 敏感实验 孔隙压力 数学模型 

分 类 号：TE319[石油与天然气工程—油气田开发工程] TE19