Pore-scale analysis of relations between seepage characteristics and gas hydrate growth habit in porous sediments

doi:10.1016/j.energy.2020.119503

GIEC OpenIR

	Pore-scale analysis of relations between seepage characteristics and gas hydrate growth habit in porous sediments
	Kou, Xuan 1,2,3,4,5; Li, Xiao-Sen1,2,3,4 ; Wang, Yi 1,2,3,4; Wan, Kun 1,2,3,4,5; Chen, Zhao-Yang 1,2,3,4
	2021-03-01
发表期刊	ENERGY
ISSN	0360-5442
卷号	218 页码:13
通讯作者	Li, Xiao-Sen(lixs@ms.giec.ac.cn) ; Wang, Yi(wangyi@ms.giec.ac.cn)
摘要	Seepage characteristics of gas hydrate in quartz sands play important roles in gas production from hydrate-bearing sediments. Reported seepage characteristics varied from different experimental conditions due to different growth habits of gas hydrate in pores. It is critical to capture the essence of seepage variation in the presence of gas hydrate as can be employed in the prediction of long-term hydrate exploitation. In this work, the gas hydrate with different growth habits (grain-contacting and pore-filling) is synthesized in quartz sands porous media. The pore structure characteristics of the hydrate-bearing porous media has been identified by X-ray computed tomography (X-ray CT). Experimental results show that the formation and growth of gas hydrate in pores lead to the occurrence of non-interconnected pores, further limiting the validity of pore structure analyzation and the accuracy of permeability estimation. Hence, the interconnectivity degree with definite physics meaning is proposed to clarify the variation characteristics of pore structure. According to the linear correlation of interconnectivity degree with hydrate saturation, a modified permeability reduction model based on Kozeny grain model has been proposed to estimate the permeability variation of hydrate bearing porous media with different hydrate growth habits. The modified model yields a good prediction performance as is evaluated by a number of permeability measurements from experimental studies and the normalized mean squared error (NMSE). Given that the gas production from hydrate dissociation is a more complicated process which involves multi-phase fluid flow, the modified model can be further applied in permeability estimation during gas production from hydrate-bearing sediments. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	Gas hydrate Growth habit X-ray CT Permeability Kozeny grain model
DOI	10.1016/j.energy.2020.119503
关键词[WOS]	METHANE-HYDRATE ; BEARING SEDIMENTS ; NETWORK MODEL ; PERMEABILITY ; MEDIA ; TOMOGRAPHY ; SATURATION ; EVOLUTION ; IMPACT
收录类别	SCI
语种	英语
资助项目	Key Program of National Natural Science Foundation of China[51736009] ; National Natural Science Foundation of China[51676190] ; National Natural Science Foundation of China[51806251] ; Guangdong Special Support Program-Local innovation and entrepreneurship team project[2019BT02L278] ; Youth Innovation Promotion Association CAS[2018382] ; National Key Research and Development Plan of China[2016YFC0304002] ; National Key Research and Development Plan of China[2017YFC0307306] ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences[YZ201619] ; Frontier Sciences Key Research Programof the Chinese Academy of Sciences[QYZDJ-SSW-JSC033] ; Youth Science and Technology Innovation Talent of Guangdong[2016TQ03Z862]
WOS研究方向	Thermodynamics ; Energy & Fuels
项目资助者	Key Program of National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangdong Special Support Program-Local innovation and entrepreneurship team project ; Youth Innovation Promotion Association CAS ; National Key Research and Development Plan of China ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences ; Frontier Sciences Key Research Programof the Chinese Academy of Sciences ; Youth Science and Technology Innovation Talent of Guangdong
WOS类目	Thermodynamics ; Energy & Fuels
WOS记录号	WOS:000611857100005
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/32675
专题	中国科学院广州能源研究所
通讯作者	Li, Xiao-Sen; Wang, Yi
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.CAS Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 4.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100083, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Kou, Xuan,Li, Xiao-Sen,Wang, Yi,et al. Pore-scale analysis of relations between seepage characteristics and gas hydrate growth habit in porous sediments[J]. ENERGY,2021,218:13.
APA	Kou, Xuan,Li, Xiao-Sen,Wang, Yi,Wan, Kun,&Chen, Zhao-Yang.(2021).Pore-scale analysis of relations between seepage characteristics and gas hydrate growth habit in porous sediments.ENERGY,218,13.
MLA	Kou, Xuan,et al."Pore-scale analysis of relations between seepage characteristics and gas hydrate growth habit in porous sediments".ENERGY 218(2021):13.