A Fully Coupled Thermo-Hydro-Mechanical-Chemical Model for Methane Hydrate Bearing Sediments Considering the Effect of Ice
文献类型：期刊论文
| 作者 | Cheng, Fanbao2; Sun, Xiang3; Wu, Peng2; Chen, Zhixiang3; Yu, Tao2; Liu, Weiguo2; Ju, Xin1; Li, Yanghui2 |
| 刊名 | JOURNAL OF MARINE SCIENCE AND ENGINEERING
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 11期号:4页码:- |
| 关键词 | ice-hydrate-bearing sediments coupled thermo-hydro-mechanical-chemical (THMC) model water-ice phase change compaction numerical simulation |
| 英文摘要 | The ice generation is one of the challenges facing the methane hydrate depressurization, which, however, has not been fully addressed by existing numerical models for hydrate-bearing sediments (HBS). In this study, we develop a high-fidelity, fully coupled thermo-hydro-mechanical-chemical numerical model that incorporates the effect of ice. The model, developed using COMSOL, takes into account water-ice phase change, thermally induced cryogenic suction and constitutive relation in HBS. It is verified well against the temperature, pressure and cumulative gas production of Masuda's experiment. The model is then employed to investigate multiphysical responses and gas/water production when ice generation is induced by setting a low outlet pressure. The results reveal that ice forms near the outlet boundary of the specimen center, leading to a reduction in intrinsic permeability and fluid velocity and an increase in the bulk modulus of ice-HBS. This enhanced bulk modulus results in higher porosity under axial load. Although the exothermic effect of ice generation promotes the hydrate dissociation, the effect on cumulative gas production is negligible after the ice melts. A negative correlation between ice saturation and water production rate is observed, indicating that a higher gas-water ratio can be achieved by adjusting the ice duration during hydrate production. The developed coupled model proves to be crucial for understanding the effect of ice on hydrate exploitation. |
| 学科主题 | Engineering ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000977282100001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35167]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Department of Energy Science and Engineering, Stanford University, Stanford, CA 94305, USA 2.Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China |
| 推荐引用方式 GB/T 7714 | Cheng, Fanbao,Sun, Xiang,Wu, Peng,et al. A Fully Coupled Thermo-Hydro-Mechanical-Chemical Model for Methane Hydrate Bearing Sediments Considering the Effect of Ice[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2023,11(4):-. |
| APA | Cheng, Fanbao.,Sun, Xiang.,Wu, Peng.,Chen, Zhixiang.,Yu, Tao.,...&Li, Yanghui.(2023).A Fully Coupled Thermo-Hydro-Mechanical-Chemical Model for Methane Hydrate Bearing Sediments Considering the Effect of Ice.JOURNAL OF MARINE SCIENCE AND ENGINEERING,11(4),-. |
| MLA | Cheng, Fanbao,et al."A Fully Coupled Thermo-Hydro-Mechanical-Chemical Model for Methane Hydrate Bearing Sediments Considering the Effect of Ice".JOURNAL OF MARINE SCIENCE AND ENGINEERING 11.4(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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