Heterogeneity of hydrate-bearing sediments: Definition and effects on fluid flow properties

doi:10.1016/j.energy.2021.120736

GIEC OpenIR

	Heterogeneity of hydrate-bearing sediments: Definition and effects on fluid flow properties
	Kou, Xuan 1,2,3,4,5; Li, Xiao-Sen1,2,3,4 ; Wang, Yi 1,2,3,4; Liu, Jian-Wu 1,2,3,4; Chen, Zhao-Yang 1,2,3,4
	2021-08-15
发表期刊	ENERGY
ISSN	0360-5442
卷号	229 页码:13
通讯作者	Li, Xiao-Sen(lixs@ms.giec.ac.cn) ; Wang, Yi(wangyi@ms.giec.ac.cn)
摘要	Heterogenous distribution of gas hydrate in pores is the common characteristic of hydrate formation at various experimental scales. In this work, in order to fill the gap of defining the hydrate phase heterogeneity degree of hydrate-bearing sediments, we conduct a series of pore-scale experiments and simulations on hydrate formation behaviors and two-phase flow properties in hydrate-bearing samples by micro X-ray CT. The enhanced heterogeneous distribution of gas hydrate in small pores has been observed from experimental results, suggesting that the degree of hydrate heterogeneity in sandy or silty sediments may be underestimated. Therefore, the definition of hydrate heterogeneity degree is firstly proposed to characterize the hydrate phase heterogeneity of hydrate-bearing sediments. Additionally, we further investigate the effects of hydrate heterogeneity on fluid flow properties by introducing three types of hydrate distribution in porous media, which are homogeneous, clogging, and clumpy distribution. The clogging type of hydrate distribution could result in the sharply increased rate of permeability reduction, while the clumpy type of hydrate distribution might result in the declined rate of permeability reduction. Meanwhile, the heterogenous hydrate distribution leads to the rapid decrease in gas relative permeability. These findings are significant for laboratory studies and gas recovery in field tests. (c) 2021 Elsevier Ltd. All rights reserved.
关键词	Gas hydrate Heterogeneous distribution Permeability Fluid flow Porous media X-ray CT
DOI	10.1016/j.energy.2021.120736
关键词[WOS]	METHANE HYDRATE ; GAS HYDRATE ; ENERGY-CONSUMPTION ; PORE HABIT ; PERMEABILITY ; DISSOCIATION ; WATER ; DEPRESSURIZATION ; TOMOGRAPHY ; SEPARATION
收录类别	SCI
语种	英语
资助项目	Key Program of National Natural Science Foundation of China[51736009] ; Guangdong Special Support Program-Local innovation and entrepreneurship team project[2019BT02L278] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2018D002] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2020D044] ; Youth Innovation Promotion Association CAS[2018382] ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences[YJKYYQ20200061] ; Fundamental Research & Applied Fundamental Research Major Project of Guangdong Province[2019B030302004] ; Fundamental Research & Applied Fundamental Research Major Project of Guangdong Province[2020B0301030003]
WOS研究方向	Thermodynamics ; Energy & Fuels
项目资助者	Key Program of National Natural Science Foundation of China ; Guangdong Special Support Program-Local innovation and entrepreneurship team project ; Special Project for Marine Economy Development of Guangdong Province ; Youth Innovation Promotion Association CAS ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences ; Fundamental Research & Applied Fundamental Research Major Project of Guangdong Province
WOS类目	Thermodynamics ; Energy & Fuels
WOS记录号	WOS:000660686500009
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：26[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/344007/33365
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. Heterogeneity of hydrate-bearing sediments: Definition and effects on fluid flow properties[J]. ENERGY,2021,229:13.
APA	Kou, Xuan,Li, Xiao-Sen,Wang, Yi,Liu, Jian-Wu,&Chen, Zhao-Yang.(2021).Heterogeneity of hydrate-bearing sediments: Definition and effects on fluid flow properties.ENERGY,229,13.
MLA	Kou, Xuan,et al."Heterogeneity of hydrate-bearing sediments: Definition and effects on fluid flow properties".ENERGY 229(2021):13.