Effects of depressurizing rate on methane hydrate dissociation within large-scale experimental simulator
Methane hydrate is the world's largest hydrocarbon reservoir, and can be performed as an important "bridging" fuel to help the transformation of current energy situation to low-carbon energy system. High efficient scenarios of hydrate dissociation at the in situ environment is the pri...
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/34785 2023-05-15T17:11:42+02:00 Effects of depressurizing rate on methane hydrate dissociation within large-scale experimental simulator Feng, Jing-Chun Li, Bo Li, Xiao-Sen Wang, Yi 2021-12-15 http://ir.giec.ac.cn/handle/344007/34785 https://doi.org/10.1016/j.apenergy.2021.117750 英语 eng ELSEVIER SCI LTD APPLIED ENERGY http://ir.giec.ac.cn/handle/344007/34785 doi:10.1016/j.apenergy.2021.117750 Methane hydrate Hydrate dissociation Depressurization rate Optimization Large-scale HEAT-TRANSFER CHARACTERISTICS NATURAL-GAS HYDRATE SOUTH CHINA SEA BEARING SEDIMENTS POROUS-MEDIA SHENHU AREA RECOVERY STIMULATION CONJUNCTION MECHANISMS Energy & Fuels Engineering Chemical 期刊论文 2021 ftchacadsciegiec https://doi.org/10.1016/j.apenergy.2021.117750 2022-09-23T14:18:24Z Methane hydrate is the world's largest hydrocarbon reservoir, and can be performed as an important "bridging" fuel to help the transformation of current energy situation to low-carbon energy system. High efficient scenarios of hydrate dissociation at the in situ environment is the primary prerequisite for successfully harvesting natural gas from hydrate reservoir. This work investigates the influences of depressurizing rate on methane hydrate dissociation within a large-scale hydrate simulator. Experimental cases with different depressurizing rates to dissociate water-saturated hydrate sample, which is the typical marine hydrate type, have been carried out in this study. Results indicate that gas production rate decreases with the improvement of the depressurizing rate, and increasing depressurizing rate is feasible for hydrate reformation during this period, suggesting that the depressurizing rate should not be too fast before the inner pressure decreases to equilibrium pressure corresponding to the in situ temperature. When the pressure decreases below the equilibrium pressure, the gas production rate, recovery, and heat transfer rate decline with the rising of depressurizing rate, whereas the lowest depressurizing rate cannot gain the highest gas production rate and recovery as well, demonstrating the optimal depressurizing rate existed in the depressurization stage. Mechanism analysis showed that the optimal depressurizing rate can be obtained when the fluid velocity victories in accordance with the heat transfer vector in the hydrate reservoir. Report Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Applied Energy 304 117750 |
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Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
Methane hydrate Hydrate dissociation Depressurization rate Optimization Large-scale HEAT-TRANSFER CHARACTERISTICS NATURAL-GAS HYDRATE SOUTH CHINA SEA BEARING SEDIMENTS POROUS-MEDIA SHENHU AREA RECOVERY STIMULATION CONJUNCTION MECHANISMS Energy & Fuels Engineering Chemical |
spellingShingle |
Methane hydrate Hydrate dissociation Depressurization rate Optimization Large-scale HEAT-TRANSFER CHARACTERISTICS NATURAL-GAS HYDRATE SOUTH CHINA SEA BEARING SEDIMENTS POROUS-MEDIA SHENHU AREA RECOVERY STIMULATION CONJUNCTION MECHANISMS Energy & Fuels Engineering Chemical Feng, Jing-Chun Li, Bo Li, Xiao-Sen Wang, Yi Effects of depressurizing rate on methane hydrate dissociation within large-scale experimental simulator |
topic_facet |
Methane hydrate Hydrate dissociation Depressurization rate Optimization Large-scale HEAT-TRANSFER CHARACTERISTICS NATURAL-GAS HYDRATE SOUTH CHINA SEA BEARING SEDIMENTS POROUS-MEDIA SHENHU AREA RECOVERY STIMULATION CONJUNCTION MECHANISMS Energy & Fuels Engineering Chemical |
description |
Methane hydrate is the world's largest hydrocarbon reservoir, and can be performed as an important "bridging" fuel to help the transformation of current energy situation to low-carbon energy system. High efficient scenarios of hydrate dissociation at the in situ environment is the primary prerequisite for successfully harvesting natural gas from hydrate reservoir. This work investigates the influences of depressurizing rate on methane hydrate dissociation within a large-scale hydrate simulator. Experimental cases with different depressurizing rates to dissociate water-saturated hydrate sample, which is the typical marine hydrate type, have been carried out in this study. Results indicate that gas production rate decreases with the improvement of the depressurizing rate, and increasing depressurizing rate is feasible for hydrate reformation during this period, suggesting that the depressurizing rate should not be too fast before the inner pressure decreases to equilibrium pressure corresponding to the in situ temperature. When the pressure decreases below the equilibrium pressure, the gas production rate, recovery, and heat transfer rate decline with the rising of depressurizing rate, whereas the lowest depressurizing rate cannot gain the highest gas production rate and recovery as well, demonstrating the optimal depressurizing rate existed in the depressurization stage. Mechanism analysis showed that the optimal depressurizing rate can be obtained when the fluid velocity victories in accordance with the heat transfer vector in the hydrate reservoir. |
format |
Report |
author |
Feng, Jing-Chun Li, Bo Li, Xiao-Sen Wang, Yi |
author_facet |
Feng, Jing-Chun Li, Bo Li, Xiao-Sen Wang, Yi |
author_sort |
Feng, Jing-Chun |
title |
Effects of depressurizing rate on methane hydrate dissociation within large-scale experimental simulator |
title_short |
Effects of depressurizing rate on methane hydrate dissociation within large-scale experimental simulator |
title_full |
Effects of depressurizing rate on methane hydrate dissociation within large-scale experimental simulator |
title_fullStr |
Effects of depressurizing rate on methane hydrate dissociation within large-scale experimental simulator |
title_full_unstemmed |
Effects of depressurizing rate on methane hydrate dissociation within large-scale experimental simulator |
title_sort |
effects of depressurizing rate on methane hydrate dissociation within large-scale experimental simulator |
publisher |
ELSEVIER SCI LTD |
publishDate |
2021 |
url |
http://ir.giec.ac.cn/handle/344007/34785 https://doi.org/10.1016/j.apenergy.2021.117750 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
APPLIED ENERGY http://ir.giec.ac.cn/handle/344007/34785 doi:10.1016/j.apenergy.2021.117750 |
op_doi |
https://doi.org/10.1016/j.apenergy.2021.117750 |
container_title |
Applied Energy |
container_volume |
304 |
container_start_page |
117750 |
_version_ |
1766068471822548992 |