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

文献类型：期刊论文

作者Kou, Xuan1,2,3,4,5; Li, Xiao-Sen1,2,3,4; Wang, Yi1,2,3,4; Liu, Jian-Wu1,2,3,4; Chen, Zhao-Yang1,2,3,4
刊名ENERGY
出版日期2021-08-15
卷号229页码:13
关键词Gas hydrate Heterogeneous distribution Permeability Fluid flow Porous media X-ray CT
ISSN号0360-5442
DOI10.1016/j.energy.2021.120736
通讯作者Li, Xiao-Sen(lixs@ms.giec.ac.cn) ; Wang, Yi(wangyi@ms.giec.ac.cn)
英文摘要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.
WOS关键词METHANE HYDRATE ; GAS HYDRATE ; ENERGY-CONSUMPTION ; PORE HABIT ; PERMEABILITY ; DISSOCIATION ; WATER ; DEPRESSURIZATION ; TOMOGRAPHY ; SEPARATION
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
语种英语
WOS记录号WOS:000660686500009
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构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
源URL[http://ir.giec.ac.cn/handle/344007/33364]  
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.CAS Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
3.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China
4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100083, Peoples R China
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.

入库方式： OAI收割

来源：广州能源研究所

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