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Experimental study of methane hydrate formation and decomposition in the porous medium with different thermal conductivities and grain sizes

文献类型：期刊论文

作者Li, Xiao-Yan2,3,4,5,7; Feng, Jing-Chun6; Li, Xiao-Sen3,4,5,7; Wang, Yi3,4,5,7; Hu, Heng-Qi1,4,5,7
刊名APPLIED ENERGY
出版日期2022
卷号305页码:11
关键词Methane hydrate Grain size Thermal conductivity Formation and decomposition Cementation Critical hydrate saturation
ISSN号0306-2619
DOI10.1016/j.apenergy.2021.117852
通讯作者Li, Xiao-Sen(lixs@ms.giec.ac.cn) ; Wang, Yi(wangyi@ms.giec.ac.cn)
英文摘要Gas hydrate found in nature is mainly existed in deposit, such as marine deposit and permafrost. The thermophysical properties of the deposit are largely influenced by the formation features of gas hydrate, thereby affecting the hydrate production. In this manuscript, the experiments of formation and decomposition behavior of gas hydrate in the deposit with different grain sizes (40-60 mesh, 80-120 mesh, 325-400 mesh) and different thermal conductivities (0.926 W/m.K, 28.8 W/m.K, 41.9 W/m.K) were conducted in the small cubic hydrate simulator, and the coupling effect of the heat and mass transport on the hydrate formation and dissociation were researched. It was concluded that the mass transport rate in the deposit dominated the hydrate formation. The formation of gas hydrate was initial at the contact surfacing of gas-water and grew gradually in the gas-rich region, and the hydrate formation amount in the water-rich region was little. In the deposit with the grain size of 80-120 mesh and 325-400 mesh, there was no obvious induction time for the hydrate formation that occurred during gas injection. Be different from the hydrate formation, the heat transfer rate of the deposit restricted chiefly methane hydrate dissociation. With the raise of grain size and thermal conductivity of deposit, methane hydrate decomposition rate enhanced. It's also found that the formed hydrate acted as cementation in porous medium with the grain size of 80-120 mesh and 325-400 mesh. The heat transfer rate of the deposit would significantly decrease when most of the cementation between the porous medium was disappeared as a result of hydrate dissociation, and the hydrate saturation in sediments at this time was defined as the critical hydrate saturation (50-80% of the initial hydrate saturation). The critical hydrate saturation is meaningful for gas hydrate resource prospecting and the risk assessment of gas hydrate production in actual fields.
WOS关键词GAS-PRODUCTION ; HEAT-TRANSFER ; PILOT-SCALE ; SILICA SAND ; DISSOCIATION ; DEPRESSURIZATION ; PERMEABILITY ; RECOVERY ; MASS
资助项目Key Program of National Natural Science Foundation of China[51736009] ; National Natural Science Foundation of China[52122602] ; National Natural Science Foundation of China[42022046] ; National Natural Science Foundation of China[51806251] ; 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Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000701873700002
出版者ELSEVIER SCI LTD
资助机构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 ; 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/344007/34795]  
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.Univ Sci & Technol China, Hefei 230000, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, 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.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China
6.Guangdong Univ Technol, Inst Environm & Ecol Engn, Guangzhou 510006, Peoples R China
7.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Li, Xiao-Yan,Feng, Jing-Chun,Li, Xiao-Sen,et al. Experimental study of methane hydrate formation and decomposition in the porous medium with different thermal conductivities and grain sizes[J]. APPLIED ENERGY,2022,305:11.
APA Li, Xiao-Yan,Feng, Jing-Chun,Li, Xiao-Sen,Wang, Yi,&Hu, Heng-Qi.(2022).Experimental study of methane hydrate formation and decomposition in the porous medium with different thermal conductivities and grain sizes.APPLIED ENERGY,305,11.
MLA Li, Xiao-Yan,et al."Experimental study of methane hydrate formation and decomposition in the porous medium with different thermal conductivities and grain sizes".APPLIED ENERGY 305(2022):11.

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来源：广州能源研究所

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