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Length Molecular simulation studies on the water/methane two-phase flow in a cylindrical silica nanopore: Formation mechanisms of water lock and implications for gas hydrate exploitation

文献类型：期刊论文

作者Zheng, Chao1,6; Guo, Guang-Jun1,6; Qin, Xuwen4,5; Dong, Yanhui3; Lu, Cheng2,4,5; Peng, Bo1,6; Tang, Wei1,6; Bian, Hang2,7
刊名FUEL
出版日期2023-02-01
卷号333页码:11
ISSN号0016-2361
关键词Water methane two-phase flow Cylindrical nanopore Nano -manometer Relative permeability Water lock Natural gas hydrates
DOI10.1016/j.fuel.2022.126258
英文摘要The water/gas two-phase flow is a frequently encountered question in the percolation field, and is especially important for the exploitation of natural gas hydrates because their decomposition products are exactly liquid water and natural gas. We studied the water/methane two-phase flow in a hydrophilic cylindrical nanopore by performing molecular simulations, and obtained high-quality nanoflows under different water saturation (Sw) thanks to the newly established nano-manometer method to control pressure difference accurately. With increasing Sw, the methane flow decreases almost linearly until a sudden stop when Sw >= 0.52. The formation of the water lock accounting for this phenomenon is observed clearly, and the larger Sw, the earlier formation of the water lock as well as the longer water lock. Based on careful data analysis, a water lock model and its formation mechanism are newly proposed with two pieces of strong evidence - the continuous reduction of the surface area of the water/gas interface when the water lock forms and the existence of maximum thickness of water film for different Sw. Thus, the competition between the surface tension of the water/gas interface and the adsorption of the water/wall interface controls the development of the water lock. These findings are very helpful for un-derstanding the two-phase percolation and optimizing the gas production and water removal schemes during hydrate exploitation. In addition, the nano-manometer can be widely used in other nanoflow simulations for measuring the local pressure accurately.
WOS关键词RELATIVE PERMEABILITY ; METHANE ; SHALE ; CLAY ; DISSOCIATION ; TRANSPORT ; EFFICIENT ; BEHAVIOR ; FIELD ; FILM
资助项目Institute of Geology and Geophysics, CAS[IGGCAS-201903] ; Institute of Geology and Geophysics, CAS[SZJJ201901] ; Chinese Academy of Sciences[ZDBS-LY-DQC003] ; National Natural Science Foundation of China[51991365] ; China Geological Survey Project[DD20211350] ; Guangdong Major Project of Basic and Applied Basic Research[2020B0301030003]
WOS研究方向Energy & Fuels ; Engineering
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000885366500003
资助机构Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research ; Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research ; Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research ; Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Institute of Geology and Geophysics, CAS ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research ; Guangdong Major Project of Basic and Applied Basic Research
源URL[http://ir.iggcas.ac.cn/handle/132A11/107680]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Guo, Guang-Jun
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China
2.China Geol Survey, Ctr Oil & Nat Gas Resource Explorat, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
4.Natl Engn Res Ctr Gas Hydrate Explorat & Dev, Guangzhou 511458, Peoples R China
5.China Geol Survey, Guangzhou Marine Geol Survey, Guangzhou 511458, Peoples R China
6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
7.China Univ Geosci, Sch Energy Resources, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Zheng, Chao,Guo, Guang-Jun,Qin, Xuwen,et al. Length Molecular simulation studies on the water/methane two-phase flow in a cylindrical silica nanopore: Formation mechanisms of water lock and implications for gas hydrate exploitation[J]. FUEL,2023,333:11.
APA Zheng, Chao.,Guo, Guang-Jun.,Qin, Xuwen.,Dong, Yanhui.,Lu, Cheng.,...&Bian, Hang.(2023).Length Molecular simulation studies on the water/methane two-phase flow in a cylindrical silica nanopore: Formation mechanisms of water lock and implications for gas hydrate exploitation.FUEL,333,11.
MLA Zheng, Chao,et al."Length Molecular simulation studies on the water/methane two-phase flow in a cylindrical silica nanopore: Formation mechanisms of water lock and implications for gas hydrate exploitation".FUEL 333(2023):11.

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来源：地质与地球物理研究所

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