An experimental investigation on methane hydrate morphologies and pore habits in sandy sediment using synchrotron X-ray computed tomography
International audience As pore-scale morphologies and spatial distribution (pore habits) of natural gas hydrates in marine sediments considerably affect their physical/mechanical properties, they have extensively been investigated by X-ray computed tomography (XRCT) and especially synchrotron X-Ray...
Published in: | Marine and Petroleum Geology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://enpc.hal.science/hal-03053577 https://enpc.hal.science/hal-03053577/document https://enpc.hal.science/hal-03053577/file/Le%20et%20al%202020_JMPG-D-20-00412_HAL.pdf https://doi.org/10.1016/j.marpetgeo.2020.104646 |
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ftuniparissaclay:oai:HAL:hal-03053577v1 2023-12-03T10:25:45+01:00 An experimental investigation on methane hydrate morphologies and pore habits in sandy sediment using synchrotron X-ray computed tomography Le, Thi Xiu Bornert, Michel Aimedieu, Patrick Chabot, Baptiste King, Andrew Tang, Anh Minh, A.M. École des Ponts ParisTech (ENPC) Laboratoire Navier (NAVIER UMR 8205) École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel Synchrotron SOLEIL (SSOLEIL) Centre National de la Recherche Scientifique (CNRS) ANR-15-CE06-0008,HYDRE,Comportement mécanique des sédiments contenant des hydrates de gaz(2015) 2020 https://enpc.hal.science/hal-03053577 https://enpc.hal.science/hal-03053577/document https://enpc.hal.science/hal-03053577/file/Le%20et%20al%202020_JMPG-D-20-00412_HAL.pdf https://doi.org/10.1016/j.marpetgeo.2020.104646 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marpetgeo.2020.104646 hal-03053577 https://enpc.hal.science/hal-03053577 https://enpc.hal.science/hal-03053577/document https://enpc.hal.science/hal-03053577/file/Le%20et%20al%202020_JMPG-D-20-00412_HAL.pdf doi:10.1016/j.marpetgeo.2020.104646 info:eu-repo/semantics/OpenAccess ISSN: 0264-8172 Marine and Petroleum Geology https://enpc.hal.science/hal-03053577 Marine and Petroleum Geology, 2020, 122, pp.104646. ⟨10.1016/j.marpetgeo.2020.104646⟩ methane hydrate sandy sediments morphology pore habits synchrotron X-ray computed tomography [SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique info:eu-repo/semantics/article Journal articles 2020 ftuniparissaclay https://doi.org/10.1016/j.marpetgeo.2020.104646 2023-11-04T22:34:00Z International audience As pore-scale morphologies and spatial distribution (pore habits) of natural gas hydrates in marine sediments considerably affect their physical/mechanical properties, they have extensively been investigated by X-ray computed tomography (XRCT) and especially synchrotron X-Ray computed tomography (SXRCT). While both image spatial and scan temporal resolutions are being improved over time, it is still challenging to distinguish water from methane hydrate in an image due to their low absorption contrast. In this study, methane hydrate formation and growth in wet sand were observed at submicron/micron scale using SXRCT. Saline water (Potassium iodide-KI) was used in order to improve the image contrast. Evolutions of methane hydrate morphologies and distribution at both the pore and sample scales were observed. Results are discussed based on various mechanisms related to material behaviors and experimental conditions, e.g. suction variation during methane hydrate formation, local temperature gradient in the sample, and particularly the interaction of X-rays with the sample. Methane hydrate formation is interpreted as a dynamic process, favoring the Ostwald ripening. Furthermore, morphologies and pore habits of methane hydrates under excess-gas and excess-water conditions are discussed. Some recommendations are finally given for further studies on methane hydrates-bearing sediments via XRCT or SXRCT. Article in Journal/Newspaper Methane hydrate Archives ouvertes de Paris-Saclay Marine and Petroleum Geology 122 104646 |
institution |
Open Polar |
collection |
Archives ouvertes de Paris-Saclay |
op_collection_id |
ftuniparissaclay |
language |
English |
topic |
methane hydrate sandy sediments morphology pore habits synchrotron X-ray computed tomography [SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique |
spellingShingle |
methane hydrate sandy sediments morphology pore habits synchrotron X-ray computed tomography [SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique Le, Thi Xiu Bornert, Michel Aimedieu, Patrick Chabot, Baptiste King, Andrew Tang, Anh Minh, A.M. An experimental investigation on methane hydrate morphologies and pore habits in sandy sediment using synchrotron X-ray computed tomography |
topic_facet |
methane hydrate sandy sediments morphology pore habits synchrotron X-ray computed tomography [SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique |
description |
International audience As pore-scale morphologies and spatial distribution (pore habits) of natural gas hydrates in marine sediments considerably affect their physical/mechanical properties, they have extensively been investigated by X-ray computed tomography (XRCT) and especially synchrotron X-Ray computed tomography (SXRCT). While both image spatial and scan temporal resolutions are being improved over time, it is still challenging to distinguish water from methane hydrate in an image due to their low absorption contrast. In this study, methane hydrate formation and growth in wet sand were observed at submicron/micron scale using SXRCT. Saline water (Potassium iodide-KI) was used in order to improve the image contrast. Evolutions of methane hydrate morphologies and distribution at both the pore and sample scales were observed. Results are discussed based on various mechanisms related to material behaviors and experimental conditions, e.g. suction variation during methane hydrate formation, local temperature gradient in the sample, and particularly the interaction of X-rays with the sample. Methane hydrate formation is interpreted as a dynamic process, favoring the Ostwald ripening. Furthermore, morphologies and pore habits of methane hydrates under excess-gas and excess-water conditions are discussed. Some recommendations are finally given for further studies on methane hydrates-bearing sediments via XRCT or SXRCT. |
author2 |
École des Ponts ParisTech (ENPC) Laboratoire Navier (NAVIER UMR 8205) École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel Synchrotron SOLEIL (SSOLEIL) Centre National de la Recherche Scientifique (CNRS) ANR-15-CE06-0008,HYDRE,Comportement mécanique des sédiments contenant des hydrates de gaz(2015) |
format |
Article in Journal/Newspaper |
author |
Le, Thi Xiu Bornert, Michel Aimedieu, Patrick Chabot, Baptiste King, Andrew Tang, Anh Minh, A.M. |
author_facet |
Le, Thi Xiu Bornert, Michel Aimedieu, Patrick Chabot, Baptiste King, Andrew Tang, Anh Minh, A.M. |
author_sort |
Le, Thi Xiu |
title |
An experimental investigation on methane hydrate morphologies and pore habits in sandy sediment using synchrotron X-ray computed tomography |
title_short |
An experimental investigation on methane hydrate morphologies and pore habits in sandy sediment using synchrotron X-ray computed tomography |
title_full |
An experimental investigation on methane hydrate morphologies and pore habits in sandy sediment using synchrotron X-ray computed tomography |
title_fullStr |
An experimental investigation on methane hydrate morphologies and pore habits in sandy sediment using synchrotron X-ray computed tomography |
title_full_unstemmed |
An experimental investigation on methane hydrate morphologies and pore habits in sandy sediment using synchrotron X-ray computed tomography |
title_sort |
experimental investigation on methane hydrate morphologies and pore habits in sandy sediment using synchrotron x-ray computed tomography |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://enpc.hal.science/hal-03053577 https://enpc.hal.science/hal-03053577/document https://enpc.hal.science/hal-03053577/file/Le%20et%20al%202020_JMPG-D-20-00412_HAL.pdf https://doi.org/10.1016/j.marpetgeo.2020.104646 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
ISSN: 0264-8172 Marine and Petroleum Geology https://enpc.hal.science/hal-03053577 Marine and Petroleum Geology, 2020, 122, pp.104646. ⟨10.1016/j.marpetgeo.2020.104646⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marpetgeo.2020.104646 hal-03053577 https://enpc.hal.science/hal-03053577 https://enpc.hal.science/hal-03053577/document https://enpc.hal.science/hal-03053577/file/Le%20et%20al%202020_JMPG-D-20-00412_HAL.pdf doi:10.1016/j.marpetgeo.2020.104646 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.marpetgeo.2020.104646 |
container_title |
Marine and Petroleum Geology |
container_volume |
122 |
container_start_page |
104646 |
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1784274794872569856 |