Nuclear magnetic resonance study of the formation and dissociation process of nature gas hydrate in sandstone
In this work, the authors monitored the formation and dissociation process of methane hydrate in four different rock core samples through nuclear magnetic resonance (NMR) relaxation time (T2) and 2D imaging measurement. The result shows that the intensity of T2 spectra and magnetic resonance imaging...
Published in: | China Geology |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
KeAi Communications Co., Ltd.
2022
|
Subjects: | |
Online Access: | https://doi.org/10.31035/cg2022010 https://doaj.org/article/44c2fcd30095400c894d399409415e77 |
id |
ftdoajarticles:oai:doaj.org/article:44c2fcd30095400c894d399409415e77 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:44c2fcd30095400c894d399409415e77 2023-05-15T17:11:44+02:00 Nuclear magnetic resonance study of the formation and dissociation process of nature gas hydrate in sandstone Dong-hui Xing Xu-wen Qin Hai-jun Qiu Hong-feng Lu Yi-ren Fan Xin-min Ge Cheng Lu Jin-wen Du 2022-10-01T00:00:00Z https://doi.org/10.31035/cg2022010 https://doaj.org/article/44c2fcd30095400c894d399409415e77 EN eng KeAi Communications Co., Ltd. http://www.sciencedirect.com/science/article/pii/S2096519222001951 https://doaj.org/toc/2096-5192 2096-5192 doi:10.31035/cg2022010 https://doaj.org/article/44c2fcd30095400c894d399409415e77 China Geology, Vol 5, Iss 4, Pp 630-636 (2022) Nature gas hydrates (NGHs) Methane hydrate Nuclear magnetic resonance (NMR) Magnetic resonance imaging (MRI) Formation and dissociation Saturation Engineering (General). Civil engineering (General) TA1-2040 Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.31035/cg2022010 2023-02-12T01:31:21Z In this work, the authors monitored the formation and dissociation process of methane hydrate in four different rock core samples through nuclear magnetic resonance (NMR) relaxation time (T2) and 2D imaging measurement. The result shows that the intensity of T2 spectra and magnetic resonance imaging (MRI) signals gradually decreases in the hydrate formation process, and at the same time, the T2 spectra move toward the left domain as the growth of hydrate in the pores of the sample accelerates the decay rate. The hydrate grows and dissociates preferentially in the purer sandstone samples with larger pore size and higher porosity. Significantly, for the sample with lower porosity and higher argillaceous content, the intensity of the T2 spectra also shows a trend of a great decrease in the hydrate formation process, which means that high-saturation gas hydrate can also be formed in the sample with higher argillaceous content. The changes in MRI of the sample in the process show that the formation and dissociation of methane hydrate can reshape the distribution of water in the pores.©2022 China Geology Editorial Office. Article in Journal/Newspaper Methane hydrate Directory of Open Access Journals: DOAJ Articles China Geology 5 0 1 2 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Nature gas hydrates (NGHs) Methane hydrate Nuclear magnetic resonance (NMR) Magnetic resonance imaging (MRI) Formation and dissociation Saturation Engineering (General). Civil engineering (General) TA1-2040 Geology QE1-996.5 |
spellingShingle |
Nature gas hydrates (NGHs) Methane hydrate Nuclear magnetic resonance (NMR) Magnetic resonance imaging (MRI) Formation and dissociation Saturation Engineering (General). Civil engineering (General) TA1-2040 Geology QE1-996.5 Dong-hui Xing Xu-wen Qin Hai-jun Qiu Hong-feng Lu Yi-ren Fan Xin-min Ge Cheng Lu Jin-wen Du Nuclear magnetic resonance study of the formation and dissociation process of nature gas hydrate in sandstone |
topic_facet |
Nature gas hydrates (NGHs) Methane hydrate Nuclear magnetic resonance (NMR) Magnetic resonance imaging (MRI) Formation and dissociation Saturation Engineering (General). Civil engineering (General) TA1-2040 Geology QE1-996.5 |
description |
In this work, the authors monitored the formation and dissociation process of methane hydrate in four different rock core samples through nuclear magnetic resonance (NMR) relaxation time (T2) and 2D imaging measurement. The result shows that the intensity of T2 spectra and magnetic resonance imaging (MRI) signals gradually decreases in the hydrate formation process, and at the same time, the T2 spectra move toward the left domain as the growth of hydrate in the pores of the sample accelerates the decay rate. The hydrate grows and dissociates preferentially in the purer sandstone samples with larger pore size and higher porosity. Significantly, for the sample with lower porosity and higher argillaceous content, the intensity of the T2 spectra also shows a trend of a great decrease in the hydrate formation process, which means that high-saturation gas hydrate can also be formed in the sample with higher argillaceous content. The changes in MRI of the sample in the process show that the formation and dissociation of methane hydrate can reshape the distribution of water in the pores.©2022 China Geology Editorial Office. |
format |
Article in Journal/Newspaper |
author |
Dong-hui Xing Xu-wen Qin Hai-jun Qiu Hong-feng Lu Yi-ren Fan Xin-min Ge Cheng Lu Jin-wen Du |
author_facet |
Dong-hui Xing Xu-wen Qin Hai-jun Qiu Hong-feng Lu Yi-ren Fan Xin-min Ge Cheng Lu Jin-wen Du |
author_sort |
Dong-hui Xing |
title |
Nuclear magnetic resonance study of the formation and dissociation process of nature gas hydrate in sandstone |
title_short |
Nuclear magnetic resonance study of the formation and dissociation process of nature gas hydrate in sandstone |
title_full |
Nuclear magnetic resonance study of the formation and dissociation process of nature gas hydrate in sandstone |
title_fullStr |
Nuclear magnetic resonance study of the formation and dissociation process of nature gas hydrate in sandstone |
title_full_unstemmed |
Nuclear magnetic resonance study of the formation and dissociation process of nature gas hydrate in sandstone |
title_sort |
nuclear magnetic resonance study of the formation and dissociation process of nature gas hydrate in sandstone |
publisher |
KeAi Communications Co., Ltd. |
publishDate |
2022 |
url |
https://doi.org/10.31035/cg2022010 https://doaj.org/article/44c2fcd30095400c894d399409415e77 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
China Geology, Vol 5, Iss 4, Pp 630-636 (2022) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2096519222001951 https://doaj.org/toc/2096-5192 2096-5192 doi:10.31035/cg2022010 https://doaj.org/article/44c2fcd30095400c894d399409415e77 |
op_doi |
https://doi.org/10.31035/cg2022010 |
container_title |
China Geology |
container_volume |
5 |
container_issue |
0 |
container_start_page |
1 |
op_container_end_page |
2 |
_version_ |
1766068497971937280 |