Physical Experiment Research on Dielectric Properties of Hydrate-bearing Sediment in Sandstone Reservoir
Dielectric constants can be used to detect hydrates in permafrost regions. Therefore, this study investigated the relationships between the dielectric constant characteristics of sandstone reservoir hydrate and the hydrate saturation degree through physical simulation experiments, as well as the gra...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:3aa2a95d8b4f40359f39ca7798c8b7f8 2023-05-15T17:11:42+02:00 Physical Experiment Research on Dielectric Properties of Hydrate-bearing Sediment in Sandstone Reservoir Du Bing-rui Bai Da-wei Zhang Peng-hui Guo Peng Zhang Qiang 2019-01-01 https://doi.org/10.1051/e3sconf/201911803046 https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/44/e3sconf_icaeer18_03046.pdf https://doaj.org/article/3aa2a95d8b4f40359f39ca7798c8b7f8 en fr eng fre EDP Sciences 2267-1242 doi:10.1051/e3sconf/201911803046 https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/44/e3sconf_icaeer18_03046.pdf https://doaj.org/article/3aa2a95d8b4f40359f39ca7798c8b7f8 undefined E3S Web of Conferences, Vol 118, p 03046 (2019) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2019 fttriple https://doi.org/10.1051/e3sconf/201911803046 2023-01-22T18:19:24Z Dielectric constants can be used to detect hydrates in permafrost regions. Therefore, this study investigated the relationships between the dielectric constant characteristics of sandstone reservoir hydrate and the hydrate saturation degree through physical simulation experiments, as well as the granularity of the surrounding rock. Methane and tetrahydrofuran (THF) hydrates with quartz sands were prepared, and their dielectric constants were analyzed. With different granularities of quartz sands, the dielectric constants of two different methane hydrate sediments decreased with increasing saturation degrees. At a given saturation degree, the dielectric constant of methane hydrate sediments with small granularity was larger than that with medium granularity, a result attributed to the unreacted water in the larger pores of the latter. In addition, the dielectric constant of methane hydrate sediments was larger than that of THF hydrates, which was also attributed to gas-phase factors and the presence of unreacted water. At a given granularity and saturation, the dielectric constants of both the THF and methane hydrates decreased with increasing saturation degrees. We conclude that at low temperature and under normal pressure, THF hydrates cannot be used as a substitute for methane hydrates in laboratory experiments investigating geophysical phenomena. Article in Journal/Newspaper Methane hydrate permafrost Unknown E3S Web of Conferences 118 03046 |
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geo envir Du Bing-rui Bai Da-wei Zhang Peng-hui Guo Peng Zhang Qiang Physical Experiment Research on Dielectric Properties of Hydrate-bearing Sediment in Sandstone Reservoir |
topic_facet |
geo envir |
description |
Dielectric constants can be used to detect hydrates in permafrost regions. Therefore, this study investigated the relationships between the dielectric constant characteristics of sandstone reservoir hydrate and the hydrate saturation degree through physical simulation experiments, as well as the granularity of the surrounding rock. Methane and tetrahydrofuran (THF) hydrates with quartz sands were prepared, and their dielectric constants were analyzed. With different granularities of quartz sands, the dielectric constants of two different methane hydrate sediments decreased with increasing saturation degrees. At a given saturation degree, the dielectric constant of methane hydrate sediments with small granularity was larger than that with medium granularity, a result attributed to the unreacted water in the larger pores of the latter. In addition, the dielectric constant of methane hydrate sediments was larger than that of THF hydrates, which was also attributed to gas-phase factors and the presence of unreacted water. At a given granularity and saturation, the dielectric constants of both the THF and methane hydrates decreased with increasing saturation degrees. We conclude that at low temperature and under normal pressure, THF hydrates cannot be used as a substitute for methane hydrates in laboratory experiments investigating geophysical phenomena. |
format |
Article in Journal/Newspaper |
author |
Du Bing-rui Bai Da-wei Zhang Peng-hui Guo Peng Zhang Qiang |
author_facet |
Du Bing-rui Bai Da-wei Zhang Peng-hui Guo Peng Zhang Qiang |
author_sort |
Du Bing-rui |
title |
Physical Experiment Research on Dielectric Properties of Hydrate-bearing Sediment in Sandstone Reservoir |
title_short |
Physical Experiment Research on Dielectric Properties of Hydrate-bearing Sediment in Sandstone Reservoir |
title_full |
Physical Experiment Research on Dielectric Properties of Hydrate-bearing Sediment in Sandstone Reservoir |
title_fullStr |
Physical Experiment Research on Dielectric Properties of Hydrate-bearing Sediment in Sandstone Reservoir |
title_full_unstemmed |
Physical Experiment Research on Dielectric Properties of Hydrate-bearing Sediment in Sandstone Reservoir |
title_sort |
physical experiment research on dielectric properties of hydrate-bearing sediment in sandstone reservoir |
publisher |
EDP Sciences |
publishDate |
2019 |
url |
https://doi.org/10.1051/e3sconf/201911803046 https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/44/e3sconf_icaeer18_03046.pdf https://doaj.org/article/3aa2a95d8b4f40359f39ca7798c8b7f8 |
genre |
Methane hydrate permafrost |
genre_facet |
Methane hydrate permafrost |
op_source |
E3S Web of Conferences, Vol 118, p 03046 (2019) |
op_relation |
2267-1242 doi:10.1051/e3sconf/201911803046 https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/44/e3sconf_icaeer18_03046.pdf https://doaj.org/article/3aa2a95d8b4f40359f39ca7798c8b7f8 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1051/e3sconf/201911803046 |
container_title |
E3S Web of Conferences |
container_volume |
118 |
container_start_page |
03046 |
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1766068479374393344 |