Experimental study of the laws between the effective confining pressure and mudstone permeability

doi:10.1016/j.egypro.2014.11.598

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 > 会议论文

	Experimental study of the laws between the effective confining pressure and mudstone permeability
	Zeng Zhijiao 1; Li Xiaochun1 ; Shi Lu 1; Bai Bing 1; Fang Zhiming 1; Wang Ying 2
	2014
会议日期	OCT 05-09, 2014
会议地点	Austin, TX
关键词	permeability mudstone effective confining pressure microcrack
卷号	63
DOI	10.1016/j.egypro.2014.11.598
页码	5654-5663
英文摘要	The stress dependent permeability of a mudstone sample was measured using a transient pulse technique in a specially designed apparatus in which the confining pressure, pore pressure, and temperature were independently controlled. Experiments were conducted with the confining pressure first gradually increased from 10 to 30 MPa and then subsequently reduced back to 10 MPa. And the pore pressure was kept constant of 5 MPa during the whole process. During the loading process of effective confining pressure, the permeability of the mudstone had a nonlinear reduction with increasing stress and showed a high stress sensitivity (varying three orders of magnitude). The phenomenon can be explained that microcrack closure is the dominant mechanism controlling the evolution of mudstone permeability with the effective confining pressure during the loading process. The experimental results indicate that there is good fit of a model with exponential relationship of permeability and effective confining pressure to the data points. When unloading the effective confining pressure, the permeability of mudstone had very tiny increase and showed weak recovery capability. This is the result of the irreversibility of crack closure. (C) 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).
会议录	12TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-12
会议录出版者	ELSEVIER SCIENCE BV
会议录出版地	AMSTERDAM
语种	英语
WOS研究方向	Chemistry ; Energy & Fuels
WOS记录号	WOS:000361211505085
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4831]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Southwest Petr Univ, Inst Oil & Gas Engn, Geol Storage & Enhanced Oil & Gas Recovery CO2, Chengdu, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Zeng Zhijiao,Li Xiaochun,Shi Lu,et al. Experimental study of the laws between the effective confining pressure and mudstone permeability[C]. 见:. Austin, TX. OCT 05-09, 2014.