重庆大学学报Issue(1)：65-71,7.DOI:10.11835/j.issn.1000-582X.2016.01.009
热流固耦合作用下页岩渗透特性实验
Effects of heat flow fluid-solid coupling on the characteristics of shale permeability
摘要
Abstract
To study the influences of geo-temperature on the seepage properties of a shale,we analyzed the temperature-dependent patterns of viscous force change of methane,the formations of a shale by heat stress and expansion,and the matrix shrinkage caused by methane desorption.By using shale samples of Longmaxi Formation in Youyang of Southeast Chongqing,we conducted an experiment on the temperature dependence of the seepage of shale rock.The experiment shows that an increase in temperature leads to an increased viscous force of methane and reduced flow speed.The differences in expansion of clay minerals and organic matters produce thermal stress and compress the shale skeleton,and matrix thermal expansion reduces the substrate gaps,both leading to a decrease in the seepage channels.The matrix shrinkage has very little influence on the infiltration capacity of pores and cracks.The major effects of temperature on the seepage characteristics of shale are the decrease of flow speed of methane due to increased viscous force and compressed seepage channels due to thermal stress and thermal expansion.关键词
页岩/温度/内摩擦力/热应力/渗流Key words
shale/temperature/viscous force/thermal stress/seepage分类
天文与地球科学引用本文复制引用
卢义玉,刘小川,汤积仁,黄飞..热流固耦合作用下页岩渗透特性实验[J].重庆大学学报,2016,(1):65-71,7.基金项目
国家重点基础研究发展计划资助项目（2014CB239206）；中央高校自然科学类基金重大项目（CDJZR12248801）。Supported by National Program on Key Basic Research Project of China （2014CB239206）and Natural Science Funds for the Central Universities （CDJZR12248801）． （）
