Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Heterogeneity of hydrate-bearing sediments: Definition and effects on fluid flow properties | |
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
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| 2021-08-15 | |
| Source Publication | ENERGY
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| ISSN | 0360-5442 |
| Volume | 229Pages:13 |
| Corresponding Author | Li, Xiao-Sen(lixs@ms.giec.ac.cn) ; Wang, Yi(wangyi@ms.giec.ac.cn) |
| Abstract | 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. |
| Keyword | Gas hydrate Heterogeneous distribution Permeability Fluid flow Porous media X-ray CT |
| DOI | 10.1016/j.energy.2021.120736 |
| WOS Keyword | METHANE HYDRATE ; GAS HYDRATE ; ENERGY-CONSUMPTION ; PORE HABIT ; PERMEABILITY ; DISSOCIATION ; WATER ; DEPRESSURIZATION ; TOMOGRAPHY ; SEPARATION |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Thermodynamics ; Energy & Fuels |
| Funding Organization | 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 Subject | Thermodynamics ; Energy & Fuels |
| WOS ID | WOS:000660686500009 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/33365 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Li, Xiao-Sen; Wang, Yi |
| Affiliation | 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 |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation 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. |
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