Formation mechanism of heterogeneous hydrate-bearing sediments
文献类型:期刊论文
作者 | Kou, Xuan1,3; Feng, Jing-Chun2; Li, Xiao-Sen1,3![]() |
刊名 | APPLIED ENERGY
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出版日期 | 2022-11-15 |
卷号 | 326页码:13 |
关键词 | Gas hydrates Hydrate-bearing sediments Formation Heterogeneity Water migration X-CT |
ISSN号 | 0306-2619 |
DOI | 10.1016/j.apenergy.2022.119931 |
通讯作者 | Li, Xiao-Sen(lixs@ms.giec.ac.cn) ; Wang, Yi(wangyi@ms.giec.ac.cn) |
英文摘要 | Lack of knowledge on the formation mechanism of heterogeneous hydrate-bearing sediments (HBS) leads to difficulties of forming nature-like HBS, further resulting in unknown implications of HBS heterogeneity to the hydrate field exploitation. This work aims to reveal the unaddressed formation mechanism of heterogeneous HBS by theoretical hypothesis, model derivation, and experimental verification. The hypothesis that the water migration (including water diffusion and transportation) during hydrate formation plays a significant role in controlling HBS heterogeneity is firstly proposed. Since the dual effects of water migration on hydrate formation rate is non-negligible, a modified hydrate formation kinetic model is established by integrating the effects of water diffusion and water transportation on dynamic reaction area. Furthermore, three typical nature-like HBS (lumpy, layered, and homogeneous HBS) with the same hydrate saturation of 0.673 but different heterogeneities are formed by changing the initial water distribution. The proposed kinetic model successfully predicts that the average formation rate of lumpy HBS is 16 times faster than that of homogeneous HBS. This model solves the problem in describing the variations of formation rates of homogeneous and heterogeneous HBS. The hydrate distribution and morphology are also captured by X-ray Computed Tomography (X-CT) scans. The X-CT results further confirm that the spontaneous water transportation against gravity results in heterogeneous hydrate distribution and various hydrate morphologies in pores. Hence, the newly proposed formation mechanism and formation method of heterogeneous HBS in this work provide theoretical support and research method for future studies on efficient exploitation of naturally occurring heterogeneous HBS. |
WOS关键词 | NATURAL-GAS HYDRATE ; METHANE HYDRATE ; POROUS-MEDIA ; OFFSHORE PRODUCTION ; NANKAI TROUGH ; MODEL ; SHALE ; HABIT ; AREA |
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] ; Guangdong Special Support Program-Local innovation and entrepreneurship team project[2019BT02L278] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2022D043] ; 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 Funda- mental Research Major Project of Guangdong Province[2019B030302004] ; Fundamental Research & Applied Funda- mental Research Major Project of Guangdong Province[2020B0301030003] |
WOS研究方向 | Energy & Fuels ; Engineering |
语种 | 英语 |
WOS记录号 | WOS:000860490800007 |
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 Funda- mental Research Major Project of Guangdong Province |
源URL | [http://ir.giec.ac.cn/handle/344007/37322] ![]() |
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.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 2.Guangdong Univ Technol, Inst Environm & Ecol Engn, Guangzhou 510006, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China |
推荐引用方式 GB/T 7714 | Kou, Xuan,Feng, Jing-Chun,Li, Xiao-Sen,et al. Formation mechanism of heterogeneous hydrate-bearing sediments[J]. APPLIED ENERGY,2022,326:13. |
APA | Kou, Xuan,Feng, Jing-Chun,Li, Xiao-Sen,Wang, Yi,&Chen, Zhao -Yang.(2022).Formation mechanism of heterogeneous hydrate-bearing sediments.APPLIED ENERGY,326,13. |
MLA | Kou, Xuan,et al."Formation mechanism of heterogeneous hydrate-bearing sediments".APPLIED ENERGY 326(2022):13. |
入库方式: OAI收割
来源:广州能源研究所
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