Large scale experimental evaluation to methane hydrate dissociation below quadruple point in sandy sediment
The Pilot-Scale Hydrate Simulator (PHS), a three-dimensional 117.8L pressure vessel, is applied to study the methane hydrate dissociation below the quadruple point in the sandy sediment in this work. The hydrate dissociation behaviors below and above the quadruple point are compared. The influences...
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ftrepec:oai:RePEc:eee:appene:v:162:y:2016:i:c:p:372-381 2024-04-14T08:14:49+00:00 Large scale experimental evaluation to methane hydrate dissociation below quadruple point in sandy sediment Wang, Yi Feng, Jing-Chun Li, Xiao-Sen Zhang, Yu Li, Gang http://www.sciencedirect.com/science/article/pii/S0306261915013264 unknown http://www.sciencedirect.com/science/article/pii/S0306261915013264 article ftrepec 2024-03-19T10:29:41Z The Pilot-Scale Hydrate Simulator (PHS), a three-dimensional 117.8L pressure vessel, is applied to study the methane hydrate dissociation below the quadruple point in the sandy sediment in this work. The hydrate dissociation behaviors below and above the quadruple point are compared. The influences of the production pressure, the initial reservoir temperature, and the water saturation on the hydrate dissociation below the quadruple point by depressurization are investigated. The results indicate that methane hydrate dissociation below the quadruple point causes ice formation, which can strongly enhance the dissociation rate of the hydrate. The water generated from hydrate dissociation below the quadruple point may immediately form ice and the pore water in the reservoir turns into ice at the same time. Meanwhile, the hydrate dissociation below the quadruple point consumes the latent heat released by ice formation. The lower production pressure causes the higher driving force for hydrate dissociation and ice formation, which results in the higher dissociation rate of the hydrate. In addition, when the production pressure is lower than the quadruple point, a lower initial reservoir temperature is favorable for ice formation, which leads to the higher hydrate dissociation rate. The experimental results from hydrate dissociation in the ‘water-saturated’ reservoir and ‘gas-saturated’ reservoir indicate that the rate of ice formation is slower in the ‘water-saturated’ reservoir. Methane hydrate; Dissociation; Large scale; Depressurization; Quadruple point; Sandy sediment; Article in Journal/Newspaper Methane hydrate RePEc (Research Papers in Economics) |
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RePEc (Research Papers in Economics) |
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description |
The Pilot-Scale Hydrate Simulator (PHS), a three-dimensional 117.8L pressure vessel, is applied to study the methane hydrate dissociation below the quadruple point in the sandy sediment in this work. The hydrate dissociation behaviors below and above the quadruple point are compared. The influences of the production pressure, the initial reservoir temperature, and the water saturation on the hydrate dissociation below the quadruple point by depressurization are investigated. The results indicate that methane hydrate dissociation below the quadruple point causes ice formation, which can strongly enhance the dissociation rate of the hydrate. The water generated from hydrate dissociation below the quadruple point may immediately form ice and the pore water in the reservoir turns into ice at the same time. Meanwhile, the hydrate dissociation below the quadruple point consumes the latent heat released by ice formation. The lower production pressure causes the higher driving force for hydrate dissociation and ice formation, which results in the higher dissociation rate of the hydrate. In addition, when the production pressure is lower than the quadruple point, a lower initial reservoir temperature is favorable for ice formation, which leads to the higher hydrate dissociation rate. The experimental results from hydrate dissociation in the ‘water-saturated’ reservoir and ‘gas-saturated’ reservoir indicate that the rate of ice formation is slower in the ‘water-saturated’ reservoir. Methane hydrate; Dissociation; Large scale; Depressurization; Quadruple point; Sandy sediment; |
format |
Article in Journal/Newspaper |
author |
Wang, Yi Feng, Jing-Chun Li, Xiao-Sen Zhang, Yu Li, Gang |
spellingShingle |
Wang, Yi Feng, Jing-Chun Li, Xiao-Sen Zhang, Yu Li, Gang Large scale experimental evaluation to methane hydrate dissociation below quadruple point in sandy sediment |
author_facet |
Wang, Yi Feng, Jing-Chun Li, Xiao-Sen Zhang, Yu Li, Gang |
author_sort |
Wang, Yi |
title |
Large scale experimental evaluation to methane hydrate dissociation below quadruple point in sandy sediment |
title_short |
Large scale experimental evaluation to methane hydrate dissociation below quadruple point in sandy sediment |
title_full |
Large scale experimental evaluation to methane hydrate dissociation below quadruple point in sandy sediment |
title_fullStr |
Large scale experimental evaluation to methane hydrate dissociation below quadruple point in sandy sediment |
title_full_unstemmed |
Large scale experimental evaluation to methane hydrate dissociation below quadruple point in sandy sediment |
title_sort |
large scale experimental evaluation to methane hydrate dissociation below quadruple point in sandy sediment |
url |
http://www.sciencedirect.com/science/article/pii/S0306261915013264 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0306261915013264 |
_version_ |
1796313064717418496 |