Dynamic in-situ imaging of methane hydrate formation and self-preservation in porous media
We present the results of dynamic in-situ 3D X-ray imaging of methane hydrates microstructure during methane hydrate formation and dissociation in sand samples. Short scanning times and high resolution provided by synchrotron X-rays allowed for better understanding of water movement and different ty...
Published in: | Marine and Petroleum Geology |
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Online Access: | https://lup.lub.lu.se/record/9b0dea66-3696-4ea1-b513-d08a7dd645cc https://doi.org/10.1016/j.marpetgeo.2020.104234 |
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ftulundlup:oai:lup.lub.lu.se:9b0dea66-3696-4ea1-b513-d08a7dd645cc 2023-05-15T17:11:50+02:00 Dynamic in-situ imaging of methane hydrate formation and self-preservation in porous media Nikitin, Viktor V. Dugarov, Geser A. Duchkov, Anton A. Fokin, Mikhail I. Drobchik, Arkady N. Shevchenko, Pavel D. De Carlo, Francesco Mokso, Rajmund 2020-05 https://lup.lub.lu.se/record/9b0dea66-3696-4ea1-b513-d08a7dd645cc https://doi.org/10.1016/j.marpetgeo.2020.104234 eng eng Elsevier https://lup.lub.lu.se/record/9b0dea66-3696-4ea1-b513-d08a7dd645cc http://dx.doi.org/10.1016/j.marpetgeo.2020.104234 scopus:85078700903 Marine and Petroleum Geology; 115, no 104234 (2020) ISSN: 0264-8172 Oceanography Hydrology Water Resources Metallurgy and Metallic Materials Dissociation Formation Methane gas hydrates Phase-contrast tomography X-ray synchrotron tomography contributiontojournal/article info:eu-repo/semantics/article text 2020 ftulundlup https://doi.org/10.1016/j.marpetgeo.2020.104234 2023-02-01T23:40:00Z We present the results of dynamic in-situ 3D X-ray imaging of methane hydrates microstructure during methane hydrate formation and dissociation in sand samples. Short scanning times and high resolution provided by synchrotron X-rays allowed for better understanding of water movement and different types of gas-hydrate formation. Complementing previous observations, we conclude that the process of gas-hydrate formation is accompanied by the water movements caused by cryogenic water suction that happens in sequences of short fast movements with longer equilibrium states in between (when the water is immobile). Based on the 3D microstructure we identified two distinct types of gas-hydrate formation: (i) into the gas pockets and (ii) inside water volumes. For both mechanisms we do not see problems in gas or water supply to support the gas-hydrate formation. The rate of dissociation in the self-preservation mode (pressure drop at negative temperatures) appears to be different for these two types of gas hydrates. This means that the history of the gas-hydrate formation may influence its behaviour at the dissociation stage (e.g. gas-hydrate production). Article in Journal/Newspaper Methane hydrate Lund University Publications (LUP) Marine and Petroleum Geology 115 104234 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Oceanography Hydrology Water Resources Metallurgy and Metallic Materials Dissociation Formation Methane gas hydrates Phase-contrast tomography X-ray synchrotron tomography |
spellingShingle |
Oceanography Hydrology Water Resources Metallurgy and Metallic Materials Dissociation Formation Methane gas hydrates Phase-contrast tomography X-ray synchrotron tomography Nikitin, Viktor V. Dugarov, Geser A. Duchkov, Anton A. Fokin, Mikhail I. Drobchik, Arkady N. Shevchenko, Pavel D. De Carlo, Francesco Mokso, Rajmund Dynamic in-situ imaging of methane hydrate formation and self-preservation in porous media |
topic_facet |
Oceanography Hydrology Water Resources Metallurgy and Metallic Materials Dissociation Formation Methane gas hydrates Phase-contrast tomography X-ray synchrotron tomography |
description |
We present the results of dynamic in-situ 3D X-ray imaging of methane hydrates microstructure during methane hydrate formation and dissociation in sand samples. Short scanning times and high resolution provided by synchrotron X-rays allowed for better understanding of water movement and different types of gas-hydrate formation. Complementing previous observations, we conclude that the process of gas-hydrate formation is accompanied by the water movements caused by cryogenic water suction that happens in sequences of short fast movements with longer equilibrium states in between (when the water is immobile). Based on the 3D microstructure we identified two distinct types of gas-hydrate formation: (i) into the gas pockets and (ii) inside water volumes. For both mechanisms we do not see problems in gas or water supply to support the gas-hydrate formation. The rate of dissociation in the self-preservation mode (pressure drop at negative temperatures) appears to be different for these two types of gas hydrates. This means that the history of the gas-hydrate formation may influence its behaviour at the dissociation stage (e.g. gas-hydrate production). |
format |
Article in Journal/Newspaper |
author |
Nikitin, Viktor V. Dugarov, Geser A. Duchkov, Anton A. Fokin, Mikhail I. Drobchik, Arkady N. Shevchenko, Pavel D. De Carlo, Francesco Mokso, Rajmund |
author_facet |
Nikitin, Viktor V. Dugarov, Geser A. Duchkov, Anton A. Fokin, Mikhail I. Drobchik, Arkady N. Shevchenko, Pavel D. De Carlo, Francesco Mokso, Rajmund |
author_sort |
Nikitin, Viktor V. |
title |
Dynamic in-situ imaging of methane hydrate formation and self-preservation in porous media |
title_short |
Dynamic in-situ imaging of methane hydrate formation and self-preservation in porous media |
title_full |
Dynamic in-situ imaging of methane hydrate formation and self-preservation in porous media |
title_fullStr |
Dynamic in-situ imaging of methane hydrate formation and self-preservation in porous media |
title_full_unstemmed |
Dynamic in-situ imaging of methane hydrate formation and self-preservation in porous media |
title_sort |
dynamic in-situ imaging of methane hydrate formation and self-preservation in porous media |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://lup.lub.lu.se/record/9b0dea66-3696-4ea1-b513-d08a7dd645cc https://doi.org/10.1016/j.marpetgeo.2020.104234 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Marine and Petroleum Geology; 115, no 104234 (2020) ISSN: 0264-8172 |
op_relation |
https://lup.lub.lu.se/record/9b0dea66-3696-4ea1-b513-d08a7dd645cc http://dx.doi.org/10.1016/j.marpetgeo.2020.104234 scopus:85078700903 |
op_doi |
https://doi.org/10.1016/j.marpetgeo.2020.104234 |
container_title |
Marine and Petroleum Geology |
container_volume |
115 |
container_start_page |
104234 |
_version_ |
1766068599638720512 |