Visual observation of dissociation of methane hydrate crystals in a glass micro model: Production and transfer of methane
Dissociation of methane hydrate crystals in pore space caused by temperature increase or depressurization, which is one of the main concerns in developing techniques to exploit natural gases in clathrate hydrate in sediments, was observed by using a glass mimic of sediments. Hydrate crystals were fo...
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craippubl:10.1063/1.3000622 2024-09-09T19:52:07+00:00 Visual observation of dissociation of methane hydrate crystals in a glass micro model: Production and transfer of methane Katsuki, Daisuke Ohmura, Ryo Ebinuma, Takao Narita, Hideo 2008 http://dx.doi.org/10.1063/1.3000622 https://pubs.aip.org/aip/jap/article-pdf/doi/10.1063/1.3000622/10389431/083514_1_online.pdf en eng AIP Publishing Journal of Applied Physics volume 104, issue 8 ISSN 0021-8979 1089-7550 journal-article 2008 craippubl https://doi.org/10.1063/1.3000622 2024-08-29T04:03:27Z Dissociation of methane hydrate crystals in pore space caused by temperature increase or depressurization, which is one of the main concerns in developing techniques to exploit natural gases in clathrate hydrate in sediments, was observed by using a glass mimic of sediments. Hydrate crystals were formed at a system temperature of T=274.0 K and system pressure of p=12.5 MPa or T=279.6 K and p=10.1 MPa and then decomposed by increasing the system temperature to 289 or 290 K, respectively. Two experimental runs of depressurization were also conducted. Hydrate crystals formed at T=282.9 K and p=10.1 MPa or T=274.0 K and p=12.5 MPa were decomposed by depressurization to 1.7 or 0.5 MPa at a system temperature of 285.5 or 274.3 K. The glass mimic of sediments (glass micromodel) was composed of a quartz glass plate on which straight microchannels were carved and another quartz glass plate covering the microchannels. The microchannels were approximately rectangular in cross section with a top width of 1.0×102 μm and were arranged in a grid pattern at regular intervals of 2.0×102 μm. Methane gas released from dissociating methane hydrate crystals was commonly observed to form slugs that completely occupy the pores in all experiment runs. The mechanism of the dissociation of the methane hydrate crystals was discussed considering the heat and mass transfer of methane around the dissociating methane hydrate crystals. Article in Journal/Newspaper Methane hydrate AIP Publishing Journal of Applied Physics 104 8 083514 |
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Dissociation of methane hydrate crystals in pore space caused by temperature increase or depressurization, which is one of the main concerns in developing techniques to exploit natural gases in clathrate hydrate in sediments, was observed by using a glass mimic of sediments. Hydrate crystals were formed at a system temperature of T=274.0 K and system pressure of p=12.5 MPa or T=279.6 K and p=10.1 MPa and then decomposed by increasing the system temperature to 289 or 290 K, respectively. Two experimental runs of depressurization were also conducted. Hydrate crystals formed at T=282.9 K and p=10.1 MPa or T=274.0 K and p=12.5 MPa were decomposed by depressurization to 1.7 or 0.5 MPa at a system temperature of 285.5 or 274.3 K. The glass mimic of sediments (glass micromodel) was composed of a quartz glass plate on which straight microchannels were carved and another quartz glass plate covering the microchannels. The microchannels were approximately rectangular in cross section with a top width of 1.0×102 μm and were arranged in a grid pattern at regular intervals of 2.0×102 μm. Methane gas released from dissociating methane hydrate crystals was commonly observed to form slugs that completely occupy the pores in all experiment runs. The mechanism of the dissociation of the methane hydrate crystals was discussed considering the heat and mass transfer of methane around the dissociating methane hydrate crystals. |
format |
Article in Journal/Newspaper |
author |
Katsuki, Daisuke Ohmura, Ryo Ebinuma, Takao Narita, Hideo |
spellingShingle |
Katsuki, Daisuke Ohmura, Ryo Ebinuma, Takao Narita, Hideo Visual observation of dissociation of methane hydrate crystals in a glass micro model: Production and transfer of methane |
author_facet |
Katsuki, Daisuke Ohmura, Ryo Ebinuma, Takao Narita, Hideo |
author_sort |
Katsuki, Daisuke |
title |
Visual observation of dissociation of methane hydrate crystals in a glass micro model: Production and transfer of methane |
title_short |
Visual observation of dissociation of methane hydrate crystals in a glass micro model: Production and transfer of methane |
title_full |
Visual observation of dissociation of methane hydrate crystals in a glass micro model: Production and transfer of methane |
title_fullStr |
Visual observation of dissociation of methane hydrate crystals in a glass micro model: Production and transfer of methane |
title_full_unstemmed |
Visual observation of dissociation of methane hydrate crystals in a glass micro model: Production and transfer of methane |
title_sort |
visual observation of dissociation of methane hydrate crystals in a glass micro model: production and transfer of methane |
publisher |
AIP Publishing |
publishDate |
2008 |
url |
http://dx.doi.org/10.1063/1.3000622 https://pubs.aip.org/aip/jap/article-pdf/doi/10.1063/1.3000622/10389431/083514_1_online.pdf |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Journal of Applied Physics volume 104, issue 8 ISSN 0021-8979 1089-7550 |
op_doi |
https://doi.org/10.1063/1.3000622 |
container_title |
Journal of Applied Physics |
container_volume |
104 |
container_issue |
8 |
container_start_page |
083514 |
_version_ |
1809921474666954752 |