The methane hydrate formation and the resource estimate resulting from free gas migration in seeping seafloor hydrate stability zone
It is a typical multiphase flow process for hydrate formation in seeping seafloor sediments. Free gas can not only be present but also take part in formation of hydrate. The volume fraction of free gas in local pore of hydrate stable zone (HSZ) influences the formation of hydrate in seeping seafloor...
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Online Access: | http://ir.giec.ac.cn/handle/344007/3300 http://www.sciencedirect.com/science/journal/13679120 https://doi.org/10.1016/j.jseaes.2009.05.008 |
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/3300 2024-09-09T19:52:09+00:00 The methane hydrate formation and the resource estimate resulting from free gas migration in seeping seafloor hydrate stability zone Guan, Jinan Liang, Deqing Wu, Nengyou Fan, Shuanshi 2009-10-18 http://ir.giec.ac.cn/handle/344007/3300 http://www.sciencedirect.com/science/journal/13679120 https://doi.org/10.1016/j.jseaes.2009.05.008 英语 eng JOURNAL OF ASIAN EARTH SCIENCES Guan, JN; Liang, DQ; Wu, NY; Fan, SS.The methane hydrate formation and the resource estimate resulting from free gas migration in seeping seafloor hydrate stability zone,JOURNAL OF ASIAN EARTH SCIENCES,2009,36(40273):277-288 http://ir.giec.ac.cn/handle/344007/3300 http://www.sciencedirect.com/science/journal/13679120 doi:10.1016/j.jseaes.2009.05.008 Free Gas Methane Hydrate Volume Fraction Methane Flux Formation Science & Technology Physical Sciences Geology BOTTOM SIMULATING REFLECTORS GULF-OF-MEXICO MARINE-SEDIMENTS FLUID-FLOW MARGIN MODEL RIDGE CONSTRAINTS CLATHRATE TRANSPORT Geosciences Multidisciplinary Article 期刊论文 2009 ftchacadsciegiec https://doi.org/10.1016/j.jseaes.2009.05.008 2024-07-26T05:27:20Z It is a typical multiphase flow process for hydrate formation in seeping seafloor sediments. Free gas can not only be present but also take part in formation of hydrate. The volume fraction of free gas in local pore of hydrate stable zone (HSZ) influences the formation of hydrate in seeping seafloor area, and methane flux determines the abundance and resource of hydrate-bearing reservoirs. In this paper, a multiphase flow model including water (dissolved methane and salt)-free gas hydrate has been established to describe this kind of flow-transfer-reaction process where there exists a large scale of free gas migration and transform in seafloor pore. In the order of three different scenarios, the conversions among permeability, capillary pressure, phase saturations and salinity along with the formation of hydrate have been deducted. Furthermore, the influence of four sorts of free gas saturations and three classes of methane fluxes on hydrate formation and the resource has also been analyzed and compared. Based on the rules drawn from the simulation, and combined information gotten from drills in field, the methane hydrate(MH) formation in Shenhu area of South China Sea has been forecasted. It has been speculated that there may breed a moderate methane flux below this seafloor HSZ. If the flux is about 0.5 kg m(-2) a(-1), then it will go on to evolve about 2700 ka until the hydrate saturation in pore will arrive its peak (about 75%). Approximately 1.47 x 10(9) m(3) MH has been reckoned in this marine basin finally, is about 13 times over preliminary estimate. (c) 2009 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Journal of Asian Earth Sciences 36 4-5 277 288 |
institution |
Open Polar |
collection |
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
Free Gas Methane Hydrate Volume Fraction Methane Flux Formation Science & Technology Physical Sciences Geology BOTTOM SIMULATING REFLECTORS GULF-OF-MEXICO MARINE-SEDIMENTS FLUID-FLOW MARGIN MODEL RIDGE CONSTRAINTS CLATHRATE TRANSPORT Geosciences Multidisciplinary |
spellingShingle |
Free Gas Methane Hydrate Volume Fraction Methane Flux Formation Science & Technology Physical Sciences Geology BOTTOM SIMULATING REFLECTORS GULF-OF-MEXICO MARINE-SEDIMENTS FLUID-FLOW MARGIN MODEL RIDGE CONSTRAINTS CLATHRATE TRANSPORT Geosciences Multidisciplinary Guan, Jinan Liang, Deqing Wu, Nengyou Fan, Shuanshi The methane hydrate formation and the resource estimate resulting from free gas migration in seeping seafloor hydrate stability zone |
topic_facet |
Free Gas Methane Hydrate Volume Fraction Methane Flux Formation Science & Technology Physical Sciences Geology BOTTOM SIMULATING REFLECTORS GULF-OF-MEXICO MARINE-SEDIMENTS FLUID-FLOW MARGIN MODEL RIDGE CONSTRAINTS CLATHRATE TRANSPORT Geosciences Multidisciplinary |
description |
It is a typical multiphase flow process for hydrate formation in seeping seafloor sediments. Free gas can not only be present but also take part in formation of hydrate. The volume fraction of free gas in local pore of hydrate stable zone (HSZ) influences the formation of hydrate in seeping seafloor area, and methane flux determines the abundance and resource of hydrate-bearing reservoirs. In this paper, a multiphase flow model including water (dissolved methane and salt)-free gas hydrate has been established to describe this kind of flow-transfer-reaction process where there exists a large scale of free gas migration and transform in seafloor pore. In the order of three different scenarios, the conversions among permeability, capillary pressure, phase saturations and salinity along with the formation of hydrate have been deducted. Furthermore, the influence of four sorts of free gas saturations and three classes of methane fluxes on hydrate formation and the resource has also been analyzed and compared. Based on the rules drawn from the simulation, and combined information gotten from drills in field, the methane hydrate(MH) formation in Shenhu area of South China Sea has been forecasted. It has been speculated that there may breed a moderate methane flux below this seafloor HSZ. If the flux is about 0.5 kg m(-2) a(-1), then it will go on to evolve about 2700 ka until the hydrate saturation in pore will arrive its peak (about 75%). Approximately 1.47 x 10(9) m(3) MH has been reckoned in this marine basin finally, is about 13 times over preliminary estimate. (c) 2009 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Guan, Jinan Liang, Deqing Wu, Nengyou Fan, Shuanshi |
author_facet |
Guan, Jinan Liang, Deqing Wu, Nengyou Fan, Shuanshi |
author_sort |
Guan, Jinan |
title |
The methane hydrate formation and the resource estimate resulting from free gas migration in seeping seafloor hydrate stability zone |
title_short |
The methane hydrate formation and the resource estimate resulting from free gas migration in seeping seafloor hydrate stability zone |
title_full |
The methane hydrate formation and the resource estimate resulting from free gas migration in seeping seafloor hydrate stability zone |
title_fullStr |
The methane hydrate formation and the resource estimate resulting from free gas migration in seeping seafloor hydrate stability zone |
title_full_unstemmed |
The methane hydrate formation and the resource estimate resulting from free gas migration in seeping seafloor hydrate stability zone |
title_sort |
methane hydrate formation and the resource estimate resulting from free gas migration in seeping seafloor hydrate stability zone |
publishDate |
2009 |
url |
http://ir.giec.ac.cn/handle/344007/3300 http://www.sciencedirect.com/science/journal/13679120 https://doi.org/10.1016/j.jseaes.2009.05.008 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
JOURNAL OF ASIAN EARTH SCIENCES Guan, JN; Liang, DQ; Wu, NY; Fan, SS.The methane hydrate formation and the resource estimate resulting from free gas migration in seeping seafloor hydrate stability zone,JOURNAL OF ASIAN EARTH SCIENCES,2009,36(40273):277-288 http://ir.giec.ac.cn/handle/344007/3300 http://www.sciencedirect.com/science/journal/13679120 doi:10.1016/j.jseaes.2009.05.008 |
op_doi |
https://doi.org/10.1016/j.jseaes.2009.05.008 |
container_title |
Journal of Asian Earth Sciences |
container_volume |
36 |
container_issue |
4-5 |
container_start_page |
277 |
op_container_end_page |
288 |
_version_ |
1809921504904740864 |