Deformation Coupled Effective Permeability Change in Hydrate-Bearing Sediment during Depressurization
文献类型：期刊论文
| 作者 | Sun, Xiang1,2; Luo, Hao3; Soga, Kenichi1 |
| 刊名 | PROCESSES
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 10期号:11页码:- |
| 关键词 | effective permeability hydrate dissociation depressurization soil compaction heat supply |
| 英文摘要 | Methane hydrates found in the sediments of deep sea and permafrost regions draw global interest. The rate of gas production from a depressurized well is governed by the effective permeability of the hydrate-bearing sediments around the wellbore. During depressurization, a decrease in pore pressure leading to soil compaction and hydrate dissociation results in a dynamic change in the effective permeability. To describe the change in the effective permeability in detail, in this study, a simple coupled compressibility-permeability analysis method is proposed to identify the conditions under which the effective permeability increases or decreases after depressurization. An analytical solution is derived for the effective permeability change with pore pressure and temperature, considering hydrate dissociation and soil compaction. We found that when there is a sufficient heat supply, hydrate dissociation dominates the effective permeability during hydrate dissociation, but after hydrate dissociation, soil compaction is the governing factor for permeability change. When there is an insufficient heat supply, however, compaction mainly determines the permeability, and the effect of hydrate dissociation is limited. This work will be helpful for rapid reservoir assessment. |
| 学科主题 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000881670800001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35038]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94701, USA 2.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 3.China Construction Science & Technology Group Co., Ltd., Shenzhen Branch, Shenzhen 518054, China |
| 推荐引用方式 GB/T 7714 | Sun, Xiang,Luo, Hao,Soga, Kenichi. Deformation Coupled Effective Permeability Change in Hydrate-Bearing Sediment during Depressurization[J]. PROCESSES,2022,10(11):-. |
| APA | Sun, Xiang,Luo, Hao,&Soga, Kenichi.(2022).Deformation Coupled Effective Permeability Change in Hydrate-Bearing Sediment during Depressurization.PROCESSES,10(11),-. |
| MLA | Sun, Xiang,et al."Deformation Coupled Effective Permeability Change in Hydrate-Bearing Sediment during Depressurization".PROCESSES 10.11(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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