Thermo-Hydro-Mechanical Modeling of CO2 Sequestration System around Fault Environment

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	Thermo-Hydro-Mechanical Modeling of CO2 Sequestration System around Fault Environment
	Li Q; Wu ZS; Bai YL(白以龙); Yin XC(尹祥础); Li XC
刊名	Pure and Applied Geophysics
	2006
通讯作者邮箱	qi.li@aist.go.jp
卷号	163 期号:11-12 页码:2585-2593
ISSN号	0033-4553
通讯作者	Li, Q (reprint author), Natl Inst Adv Ind Sci & Tehcnol, Inst Geol & Geoinformat, AIST Cent 7,1-1-1 Higashi, Tsukuba, Ibaraki 3058567, Japan.
中文摘要	Geological sequestration of CO2 (carbon dioxide) shows great potential to reduce Greenhouse gas emissions. However, CO2 injection into geological formations may give rise to a variety of coupled chemical and physical processes. The thermo-hydro-mechanical (THM) impact of CO2 injection can induce fault instability, even possibly lead to seismic activities in and around the disposal reservoir. A sequential coupling approach under some assumptions was proposed in the numerical study to investigate the THM behavior of the CO2 sequestration system concerning the temperature, initial geological stress, injection pressure and CO2 buoyancy. The fault was treated as a flexible contact model. The effects of CO2 injection on the mechanical behavior of the faults were investigated. The Drucker-Prager model and the cap model were used to model the constitutive relationship of formations. The numerical results show that injection pressure sensitively affects the relative slip change of the fault. At the initial stage of the sequestration process, the injection pressure plays a key role in affecting the pore pressure of the formations. However, as time continues, the influence of CO2-induced buoyancy becomes obvious on the pore pressure of the formations. In general, The THM effects of CO2 geosequestration do not affect the mechanical stability of formations and faults.
学科主题	力学
类目[WOS]	Geochemistry & Geophysics
研究领域[WOS]	Geochemistry & Geophysics
收录类别	SCI
语种	英语
WOS记录号	WOS:000243624700023
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/15529]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Li Q,Wu ZS,Bai YL,et al. Thermo-Hydro-Mechanical Modeling of CO2 Sequestration System around Fault Environment[J]. Pure and Applied Geophysics,2006,163(11-12):2585-2593.
APA	Li Q,Wu ZS,白以龙,尹祥础,&Li XC.(2006).Thermo-Hydro-Mechanical Modeling of CO2 Sequestration System around Fault Environment.Pure and Applied Geophysics,163(11-12),2585-2593.
MLA	Li Q,et al."Thermo-Hydro-Mechanical Modeling of CO2 Sequestration System around Fault Environment".Pure and Applied Geophysics 163.11-12(2006):2585-2593.