Supplementary material for publication "Pore-scale salinity effects on methane hydrate dissociation" by Almenningen et al
Supplementary materials for publication "Pore-scale salinity effects on methane hydrate dissociation" Abstract:Sedimentary methane gas hydrates may become a significant source of methane gas in the global energy mix for the next decades. The widespread distribution of methane hydrates, pri...
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ftzenodo:oai:zenodo.org:1216586 2024-09-15T18:18:37+00:00 Supplementary material for publication "Pore-scale salinity effects on methane hydrate dissociation" by Almenningen et al Almenningen, S. Iden, E. Fernø, M.A. Ersland, G. 2018-04-11 https://doi.org/10.5281/zenodo.1216586 unknown Zenodo https://doi.org/10.5281/zenodo.1216585 https://doi.org/10.5281/zenodo.1216586 oai:zenodo.org:1216586 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode methane hydrate dissociation micro-model pore-scale info:eu-repo/semantics/other 2018 ftzenodo https://doi.org/10.5281/zenodo.121658610.5281/zenodo.1216585 2024-07-27T04:28:18Z Supplementary materials for publication "Pore-scale salinity effects on methane hydrate dissociation" Abstract:Sedimentary methane gas hydrates may become a significant source of methane gas in the global energy mix for the next decades. The widespread distribution of methane hydrates, primarily in subsea sediments on continental margins, makes the crystalline compound attractive for countries with shorelines that seek self-sustainable energy. Fundamental understanding of pore-level methane hydrate distribution and dissociation pattern is important to anticipate the gas production from hydrate reservoirs. Especially the effect of local salinity gradients on dissociation characteristics must be understood as the aqueous phase in most reservoirs is saline. We evaluate the pore-level salinity effect on hydrate dissociation experimentally using silicon-wafer micro-models capable of withstanding high internal pressures. Methane hydrates were formed with brines for a range of salinities (0.0, 2.0, 3.5 and 5.0 wt% NaCl), and we study hydrate dissociation during both depressurization and thermal stimulation, which currently are the most cost-effective production methods. The laboratory results show how initial pore-scale hydrate distribution prior to dissociation affect the melting and mobilization of gas. The local pore-water salinities influenced the stability of the hydrate structure, and led to distinct dissociation patterns due to water freshening. Other/Unknown Material Methane hydrate Zenodo |
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methane hydrate dissociation micro-model pore-scale |
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methane hydrate dissociation micro-model pore-scale Almenningen, S. Iden, E. Fernø, M.A. Ersland, G. Supplementary material for publication "Pore-scale salinity effects on methane hydrate dissociation" by Almenningen et al |
topic_facet |
methane hydrate dissociation micro-model pore-scale |
description |
Supplementary materials for publication "Pore-scale salinity effects on methane hydrate dissociation" Abstract:Sedimentary methane gas hydrates may become a significant source of methane gas in the global energy mix for the next decades. The widespread distribution of methane hydrates, primarily in subsea sediments on continental margins, makes the crystalline compound attractive for countries with shorelines that seek self-sustainable energy. Fundamental understanding of pore-level methane hydrate distribution and dissociation pattern is important to anticipate the gas production from hydrate reservoirs. Especially the effect of local salinity gradients on dissociation characteristics must be understood as the aqueous phase in most reservoirs is saline. We evaluate the pore-level salinity effect on hydrate dissociation experimentally using silicon-wafer micro-models capable of withstanding high internal pressures. Methane hydrates were formed with brines for a range of salinities (0.0, 2.0, 3.5 and 5.0 wt% NaCl), and we study hydrate dissociation during both depressurization and thermal stimulation, which currently are the most cost-effective production methods. The laboratory results show how initial pore-scale hydrate distribution prior to dissociation affect the melting and mobilization of gas. The local pore-water salinities influenced the stability of the hydrate structure, and led to distinct dissociation patterns due to water freshening. |
format |
Other/Unknown Material |
author |
Almenningen, S. Iden, E. Fernø, M.A. Ersland, G. |
author_facet |
Almenningen, S. Iden, E. Fernø, M.A. Ersland, G. |
author_sort |
Almenningen, S. |
title |
Supplementary material for publication "Pore-scale salinity effects on methane hydrate dissociation" by Almenningen et al |
title_short |
Supplementary material for publication "Pore-scale salinity effects on methane hydrate dissociation" by Almenningen et al |
title_full |
Supplementary material for publication "Pore-scale salinity effects on methane hydrate dissociation" by Almenningen et al |
title_fullStr |
Supplementary material for publication "Pore-scale salinity effects on methane hydrate dissociation" by Almenningen et al |
title_full_unstemmed |
Supplementary material for publication "Pore-scale salinity effects on methane hydrate dissociation" by Almenningen et al |
title_sort |
supplementary material for publication "pore-scale salinity effects on methane hydrate dissociation" by almenningen et al |
publisher |
Zenodo |
publishDate |
2018 |
url |
https://doi.org/10.5281/zenodo.1216586 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
https://doi.org/10.5281/zenodo.1216585 https://doi.org/10.5281/zenodo.1216586 oai:zenodo.org:1216586 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.121658610.5281/zenodo.1216585 |
_version_ |
1810456711274692608 |