The Model of Cohesionless Sediment Blowout with an Increase in the Methane Flow Rate
Dissociation of methane hydrates in the Arctic permafrost may lead to explosive gas emission. Methane blowout may be triggered by increasing gas flow rate at a certain depth. The mechanism of rock failure and blowout under the effect of pressurized gas was studied numerically and in laboratory exper...
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ftmdpi:oai:mdpi.com:/2076-3263/12/11/423/ 2023-08-20T04:04:35+02:00 The Model of Cohesionless Sediment Blowout with an Increase in the Methane Flow Rate Polina M. Shpak Sergey B. Turuntaev Mariia A. Trimonova Aliya A. Tairova Georgiy V. Belyakov Nikita A. Iudochkin agris 2022-11-17 application/pdf https://doi.org/10.3390/geosciences12110423 EN eng Multidisciplinary Digital Publishing Institute Cryosphere https://dx.doi.org/10.3390/geosciences12110423 https://creativecommons.org/licenses/by/4.0/ Geosciences; Volume 12; Issue 11; Pages: 423 methane hydrate gas filtration laboratory experiment mathematical model Text 2022 ftmdpi https://doi.org/10.3390/geosciences12110423 2023-08-01T07:23:37Z Dissociation of methane hydrates in the Arctic permafrost may lead to explosive gas emission. Methane blowout may be triggered by increasing gas flow rate at a certain depth. The mechanism of rock failure and blowout under the effect of pressurized gas was studied numerically and in laboratory experiments. The problem was formulated for the unsteady flow of compressed gas depending on the flow rate at a given depth, and pore gas pressure variations were calculated as a function of depth and time. The model parameters were chosen with reference to field data. According to the model, the input of gas to friable material at an increasing rate may lead to gas blowout and density loss propagating downward as the gas pressure exceeds the overburden pressure at some depth. The laboratory system was of the type of a Hele-Shaw cell, with small glass balls as friable material confined between two glass panels. The results of physical modeling and calculations show good agreement. Text Arctic Methane hydrate permafrost MDPI Open Access Publishing Arctic Geosciences 12 11 423 |
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MDPI Open Access Publishing |
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English |
topic |
methane hydrate gas filtration laboratory experiment mathematical model |
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methane hydrate gas filtration laboratory experiment mathematical model Polina M. Shpak Sergey B. Turuntaev Mariia A. Trimonova Aliya A. Tairova Georgiy V. Belyakov Nikita A. Iudochkin The Model of Cohesionless Sediment Blowout with an Increase in the Methane Flow Rate |
topic_facet |
methane hydrate gas filtration laboratory experiment mathematical model |
description |
Dissociation of methane hydrates in the Arctic permafrost may lead to explosive gas emission. Methane blowout may be triggered by increasing gas flow rate at a certain depth. The mechanism of rock failure and blowout under the effect of pressurized gas was studied numerically and in laboratory experiments. The problem was formulated for the unsteady flow of compressed gas depending on the flow rate at a given depth, and pore gas pressure variations were calculated as a function of depth and time. The model parameters were chosen with reference to field data. According to the model, the input of gas to friable material at an increasing rate may lead to gas blowout and density loss propagating downward as the gas pressure exceeds the overburden pressure at some depth. The laboratory system was of the type of a Hele-Shaw cell, with small glass balls as friable material confined between two glass panels. The results of physical modeling and calculations show good agreement. |
format |
Text |
author |
Polina M. Shpak Sergey B. Turuntaev Mariia A. Trimonova Aliya A. Tairova Georgiy V. Belyakov Nikita A. Iudochkin |
author_facet |
Polina M. Shpak Sergey B. Turuntaev Mariia A. Trimonova Aliya A. Tairova Georgiy V. Belyakov Nikita A. Iudochkin |
author_sort |
Polina M. Shpak |
title |
The Model of Cohesionless Sediment Blowout with an Increase in the Methane Flow Rate |
title_short |
The Model of Cohesionless Sediment Blowout with an Increase in the Methane Flow Rate |
title_full |
The Model of Cohesionless Sediment Blowout with an Increase in the Methane Flow Rate |
title_fullStr |
The Model of Cohesionless Sediment Blowout with an Increase in the Methane Flow Rate |
title_full_unstemmed |
The Model of Cohesionless Sediment Blowout with an Increase in the Methane Flow Rate |
title_sort |
model of cohesionless sediment blowout with an increase in the methane flow rate |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/geosciences12110423 |
op_coverage |
agris |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Methane hydrate permafrost |
genre_facet |
Arctic Methane hydrate permafrost |
op_source |
Geosciences; Volume 12; Issue 11; Pages: 423 |
op_relation |
Cryosphere https://dx.doi.org/10.3390/geosciences12110423 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/geosciences12110423 |
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Geosciences |
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12 |
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11 |
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423 |
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1774714971313143808 |