Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments
Pore structure properties of hydrate-bearing sediments considerably affect fluid flow properties during gas production from natural gas hydrate reservoirs. Hence, it is important to investigate the evolution of pore structure characteristics and fluid flow properties in hydrate-bearing sediments und...
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AMER CHEMICAL SOC
2021
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Online Access: | http://ir.giec.ac.cn/handle/344007/33316 http://ir.giec.ac.cn/handle/344007/33317 https://doi.org/10.1021/acs.energyfuels.1c00775 |
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/33317 2023-05-15T17:12:09+02:00 Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments Kou, Xuan Li, Xiao-Sen Wang, Yi Wan, Kun Chen, Zhao-Yang 2021-05-20 http://ir.giec.ac.cn/handle/344007/33316 http://ir.giec.ac.cn/handle/344007/33317 https://doi.org/10.1021/acs.energyfuels.1c00775 英语 eng AMER CHEMICAL SOC ENERGY & FUELS http://ir.giec.ac.cn/handle/344007/33316 http://ir.giec.ac.cn/handle/344007/33317 doi:10.1021/acs.energyfuels.1c00775 METHANE HYDRATE RELATIVE PERMEABILITY GAS-PRODUCTION POROUS-MEDIA DECOMPOSITION TOMOGRAPHY DISSOCIATION PARTICLE BEHAVIORS EVOLUTION Energy & Fuels Engineering Chemical 期刊论文 2021 ftchacadsciegiec https://doi.org/10.1021/acs.energyfuels.1c00775 2022-09-23T14:18:02Z Pore structure properties of hydrate-bearing sediments considerably affect fluid flow properties during gas production from natural gas hydrate reservoirs. Hence, it is important to investigate the evolution of pore structure characteristics and fluid flow properties in hydrate-bearing sediments under various conditions. In this study, the effects of particle size and hydrate saturation on hydrate growth habits, pore structure properties, and permeability reduction have been analyzed via microscale experiments (using X-ray computed tomography) and pore-network models. Experimental results reveal the pore-habit evolution of gas hydrate from grain-enveloping to pore-filling, as well as the homogeneous distribution of gas hydrate in pores with the increase in hydrate saturation and the decrease in particle size. It is noteworthy that the pore structure characteristics of hydrate-bearing sediments depend on the pore interconnectivity. The pore interconnectivity is closely related to hydrate saturation. Specifically, the volume of non-interconnected pore (dead-end pore first increases and then decreases with the increase in hydrate saturation. However, the pore interconnectivity appears to be less influenced by the hydrate occurrence for small particle sizes. Based on pore-network modeling results, the exponential distribution of pore volume and the normal distribution of throat channel length have been found. Additionally, the correlated equation of absolute permeability and particle size in the presence of gas hydrate has been first proposed. The prediction accuracy of the absolute permeability equation has been validated by experimental results in this work and experimental measurements from previous studies. These results provide valuable information and data for efficient and economic gas production from hydrate-bearing sandy or silt sediments of submarine. Report Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Energy & Fuels 35 10 8773 8785 |
institution |
Open Polar |
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Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
METHANE HYDRATE RELATIVE PERMEABILITY GAS-PRODUCTION POROUS-MEDIA DECOMPOSITION TOMOGRAPHY DISSOCIATION PARTICLE BEHAVIORS EVOLUTION Energy & Fuels Engineering Chemical |
spellingShingle |
METHANE HYDRATE RELATIVE PERMEABILITY GAS-PRODUCTION POROUS-MEDIA DECOMPOSITION TOMOGRAPHY DISSOCIATION PARTICLE BEHAVIORS EVOLUTION Energy & Fuels Engineering Chemical Kou, Xuan Li, Xiao-Sen Wang, Yi Wan, Kun Chen, Zhao-Yang Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments |
topic_facet |
METHANE HYDRATE RELATIVE PERMEABILITY GAS-PRODUCTION POROUS-MEDIA DECOMPOSITION TOMOGRAPHY DISSOCIATION PARTICLE BEHAVIORS EVOLUTION Energy & Fuels Engineering Chemical |
description |
Pore structure properties of hydrate-bearing sediments considerably affect fluid flow properties during gas production from natural gas hydrate reservoirs. Hence, it is important to investigate the evolution of pore structure characteristics and fluid flow properties in hydrate-bearing sediments under various conditions. In this study, the effects of particle size and hydrate saturation on hydrate growth habits, pore structure properties, and permeability reduction have been analyzed via microscale experiments (using X-ray computed tomography) and pore-network models. Experimental results reveal the pore-habit evolution of gas hydrate from grain-enveloping to pore-filling, as well as the homogeneous distribution of gas hydrate in pores with the increase in hydrate saturation and the decrease in particle size. It is noteworthy that the pore structure characteristics of hydrate-bearing sediments depend on the pore interconnectivity. The pore interconnectivity is closely related to hydrate saturation. Specifically, the volume of non-interconnected pore (dead-end pore first increases and then decreases with the increase in hydrate saturation. However, the pore interconnectivity appears to be less influenced by the hydrate occurrence for small particle sizes. Based on pore-network modeling results, the exponential distribution of pore volume and the normal distribution of throat channel length have been found. Additionally, the correlated equation of absolute permeability and particle size in the presence of gas hydrate has been first proposed. The prediction accuracy of the absolute permeability equation has been validated by experimental results in this work and experimental measurements from previous studies. These results provide valuable information and data for efficient and economic gas production from hydrate-bearing sandy or silt sediments of submarine. |
format |
Report |
author |
Kou, Xuan Li, Xiao-Sen Wang, Yi Wan, Kun Chen, Zhao-Yang |
author_facet |
Kou, Xuan Li, Xiao-Sen Wang, Yi Wan, Kun Chen, Zhao-Yang |
author_sort |
Kou, Xuan |
title |
Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments |
title_short |
Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments |
title_full |
Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments |
title_fullStr |
Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments |
title_full_unstemmed |
Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments |
title_sort |
microscale experiment and pore-network modeling analysis of growth habit, pore structure, and permeability of hydrate-bearing sediments |
publisher |
AMER CHEMICAL SOC |
publishDate |
2021 |
url |
http://ir.giec.ac.cn/handle/344007/33316 http://ir.giec.ac.cn/handle/344007/33317 https://doi.org/10.1021/acs.energyfuels.1c00775 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
ENERGY & FUELS http://ir.giec.ac.cn/handle/344007/33316 http://ir.giec.ac.cn/handle/344007/33317 doi:10.1021/acs.energyfuels.1c00775 |
op_doi |
https://doi.org/10.1021/acs.energyfuels.1c00775 |
container_title |
Energy & Fuels |
container_volume |
35 |
container_issue |
10 |
container_start_page |
8773 |
op_container_end_page |
8785 |
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1766068936565063680 |