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DOI | 10.1029/2020GL086990 |
Pore-Scale Controls on the Gas and Water Transport in Hydrate-Bearing Sediments | |
Li, Guangyao1,2; Zhan, Liangtong2; Yun, Taesup3; Dai, Sheng1 | |
2020-04-23 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China; South Korea |
英文摘要 | Gas and water flow rates shape the economic feasibility of hydrate deposit exploration. However, pore-scale controls on the gas and water transport as well as ensued impacts on gas production from hydrate deposits have not been well understood. This study uses 3D pore network modeling to understand the impacts of pore characteristics, hydrate, and hysteresis on two-phase fluid transport in hydrate-bearing sediments. The results highlight that drying and wetting are occurring simultaneously in sediments resulting in a nonunique water retention curve. The relative permeability to gas is governed by the coefficient of variance and the connectivity of pore size distribution in sediments. Parameter values for the modified Brook-Corey relative permeability model are recommended considering preferential hydrate pore clogging habits. Plain Language Summary Economic exploitation of natural hydrate deposits largely depends on the gas and water production rates. However, the gas and water flow models used in current gas production simulations lack rationales in determining their parameter values. This study uses pore network modeling to investigate how various factors, including pore size distribution, pore connectivity, hydrate saturation, and hydrate pore clogging habits, can affect the gas and water flow. The results offer elegant relations to determine the parameter values for gas and water flow in hydrate-bearing sediments. |
英文关键词 | gas hydrate pore characteristics pore network modeling relative permeability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000551464800027 |
WOS关键词 | STRATIGRAPHIC TEST WELL ; EASTERN NANKAI TROUGH ; RELATIVE PERMEABILITY ; METHANE-HYDRATE ; POROUS-MEDIA ; CAPILLARY-PRESSURE ; HYDRAULIC CONDUCTIVITY ; NETWORK MODEL ; HYSTERESIS ; FLOW |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249011 |
专题 | 气候变化 |
作者单位 | 1.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA; 2.Zhejiang Univ, MOE Key Lab Soft Soils & Environm Engn, Hangzhou, Peoples R China; 3.Yonsei Univ, Dept Civil & Environm Engn, Seoul, South Korea |
推荐引用方式 GB/T 7714 | Li, Guangyao,Zhan, Liangtong,Yun, Taesup,et al. Pore-Scale Controls on the Gas and Water Transport in Hydrate-Bearing Sediments[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(12). |
APA | Li, Guangyao,Zhan, Liangtong,Yun, Taesup,&Dai, Sheng.(2020).Pore-Scale Controls on the Gas and Water Transport in Hydrate-Bearing Sediments.GEOPHYSICAL RESEARCH LETTERS,47(12). |
MLA | Li, Guangyao,et al."Pore-Scale Controls on the Gas and Water Transport in Hydrate-Bearing Sediments".GEOPHYSICAL RESEARCH LETTERS 47.12(2020). |
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