| DOI: | 10.1002/2014GL060535
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| 论文题名: | Water permeability in hydrate-bearing sediments: A pore-scale study |
| 作者: | Dai S.; Seol Y.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10560
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| EISSN: | 1944-10291
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| 出版年: | 2014
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| 卷: | 41, 期:12 | | 起始页码: | 4176
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| 结束页码: | 4184
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| 语种: | 英语
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| Scopus关键词: | Water permeability
; capillarity
; fluid flow
; methane
; permeability
; tortuosity
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| 英文摘要: | Permeability is a critical parameter governing methane flux and fluid flow in hydrate-bearing sediments; however, limited valid data are available due to experimental challenges. Here we investigate the relationship between apparent water permeability (k') and hydrate saturation (Sh), accounting for hydrate pore-scale growth habit and meso-scale heterogeneity. Results from capillary tube models rely on cross-sectional tube shapes and hydrate pore habits, thus are appropriate only for sediments with uniformhydrate distribution and known hydrate pore character. Given our pore network modeling results showing that accumulating hydrate in sediments decreases sediment porosity and increases hydraulic tortuosity, we propose a modified Kozeny-Carman model to characterize water permeability in hydrate-bearing sediments. This model agrees well with experimental results and can be easily implemented in reservoir simulators with no empirical variables other than Sh. Results are also relevant to flow through other natural sediments that undergo diagenesis, salt precipitation, or bio-clogging. © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902930638&doi=10.1002%2f2014GL060535&partnerID=40&md5=873ec2ed962224aef6c1e29331a6e79e
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7824
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| Appears in Collections: | 气候减缓与适应
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作者单位: | National Energy Technology Laboratory, U.S. Department of Energy, Morgantown, WV, United States
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| Recommended Citation: | |
Dai S.,Seol Y.. Water permeability in hydrate-bearing sediments: A pore-scale study[J]. Geophysical Research Letters,2014-01-01,41(12).
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