Effect of the intermediate principal stress on the evolution of mudstone permeability under true triaxial compression

doi:10.1002/ghg.1732

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Effect of the intermediate principal stress on the evolution of mudstone permeability under true triaxial compression
	Shi, Lu; Zeng, Zhijiao; Bai, Bing; Li, Xiaochun
刊名	GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
	2018
卷号	8 期号:1 页码:37-50
关键词	true triaxial testing mudstone intermediate principal stress permeability ductility
ISSN号	2152-3878
DOI	10.1002/ghg.1732
英文摘要	The changes in the permeability of mudstone specimens under compression with different intermediate principal stresses (sigma(2)) were tested using a true triaxial testing system. The confining pressure and pore pressure were set based on the caprock conditions in a CO2 geological storage project. The measured permeability initially increased and then decreased before the failure of the specimen and reached a peak in the form of a sudden increase during the formation of the fault. The permeability during compression decreased with increasing sigma(2). However, the higher sigma(2) caused the ductility of the mudstone to decrease significantly and led to the formation of a fault parallel to the sigma(2) direction. The increase in permeability during the formation of the fault was notably suppressed by the increase in the confining pressure and decreased with increasing flatness of the fault; the flatness of the fault increased with increasing sigma(2). Moreover, an empirical function that considers the compressive and dilatant strains was proposed to predict the permeability before the failure of the specimen, and the parameters of this function are only slightly affected by sigma(2). The results of this study reveal the effect of sigma(2) on the variation of the permeability of mudstone and help better assess the risk of caprock leakage in injection projects. (c) 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.
WOS研究方向	Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	WILEY PERIODICALS, INC
WOS记录号	WOS:000424802300004
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4213]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech
推荐引用方式 GB/T 7714	Shi, Lu,Zeng, Zhijiao,Bai, Bing,et al. Effect of the intermediate principal stress on the evolution of mudstone permeability under true triaxial compression[J]. GREENHOUSE GASES-SCIENCE AND TECHNOLOGY,2018,8(1):37-50.
APA	Shi, Lu,Zeng, Zhijiao,Bai, Bing,&Li, Xiaochun.(2018).Effect of the intermediate principal stress on the evolution of mudstone permeability under true triaxial compression.GREENHOUSE GASES-SCIENCE AND TECHNOLOGY,8(1),37-50.
MLA	Shi, Lu,et al."Effect of the intermediate principal stress on the evolution of mudstone permeability under true triaxial compression".GREENHOUSE GASES-SCIENCE AND TECHNOLOGY 8.1(2018):37-50.