Experimental study on sediment deformation during methane hydrate decomposition in sandy and silty clay sediments with a novel experimental apparatus
Extraction of methane from hydrate-bearing sediment (HBS) has aroused increasing interest around the world. However, the decomposition of gas hydrate may cause significant sediment deformation, which is one of the main obstructions for the hydrate exploitation. To investigate the decomposition behav...
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/11781 2023-05-15T17:11:43+02:00 Experimental study on sediment deformation during methane hydrate decomposition in sandy and silty clay sediments with a novel experimental apparatus Han, Han Wang, Yi Li, Xiao-Sen Yu, Jian-Xing Feng, Jing-Chun Zhang, Yu 2016-10-15 http://ir.giec.ac.cn/handle/344007/11781 https://doi.org/10.1016/j.fue1.2016.05.112 英语 eng FUEL http://ir.giec.ac.cn/handle/344007/11781 doi:10.1016/j.fue1.2016.05.112 Methane Hydrate Depressurization Sandy Sediment Silty Clay Sediment Sediment Deformation Science & Technology Technology Energy & Fuels Engineering SOUTH CHINA SEA GAS-PRODUCTION BEARING SEDIMENTS POROUS-MEDIA PRODUCTION BEHAVIORS THERMAL-STIMULATION SLOPE INSTABILITY CARBON-DIOXIDE DISSOCIATION Chemical Article 期刊论文 2016 ftchacadsciegiec https://doi.org/10.1016/j.fue1.2016.05.112 2022-09-23T14:12:39Z Extraction of methane from hydrate-bearing sediment (HBS) has aroused increasing interest around the world. However, the decomposition of gas hydrate may cause significant sediment deformation, which is one of the main obstructions for the hydrate exploitation. To investigate the decomposition behaviors of methane hydrate in different sediments and study the sediment deformation during hydrate decomposition, two contrast experiments were carried out in a novel three-dimensional (3-D) high-pressure reactor with a quick-opening component. In this study, synthetic sandy sediment and natural silty clay sediment sampled from the Shenhu Area, South China Sea were used as the HBS. For hydrate in sandy sediment, the pressure-temperature (P-T) relationship is consistent with that of bulk hydrate. However, in silty clay sediment, the hydrate decomposition conditions shift into a higher pressure region than that in sandy sediment, which is mainly due to the small pore particle size and the presence of salinity. In addition, hydrate decomposition conditions in silty clay sediment also vary at different positions in the reactor because of the effects of salinity, organics, minerals and the uneven distribution of the pores and pore particles. Hence, it is considered that there is a variable equilibrium for the methane hydrate deposits in silty clay sediment. Further, Radial Shrinkage Effect of Hydrate Decomposition (RASHEHD) was observed in both experiments. It is possibly a combined consequence of gas seepage and the cementation effect of hydrate. (C) 2016 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
institution |
Open Polar |
collection |
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
Methane Hydrate Depressurization Sandy Sediment Silty Clay Sediment Sediment Deformation Science & Technology Technology Energy & Fuels Engineering SOUTH CHINA SEA GAS-PRODUCTION BEARING SEDIMENTS POROUS-MEDIA PRODUCTION BEHAVIORS THERMAL-STIMULATION SLOPE INSTABILITY CARBON-DIOXIDE DISSOCIATION Chemical |
spellingShingle |
Methane Hydrate Depressurization Sandy Sediment Silty Clay Sediment Sediment Deformation Science & Technology Technology Energy & Fuels Engineering SOUTH CHINA SEA GAS-PRODUCTION BEARING SEDIMENTS POROUS-MEDIA PRODUCTION BEHAVIORS THERMAL-STIMULATION SLOPE INSTABILITY CARBON-DIOXIDE DISSOCIATION Chemical Han, Han Wang, Yi Li, Xiao-Sen Yu, Jian-Xing Feng, Jing-Chun Zhang, Yu Experimental study on sediment deformation during methane hydrate decomposition in sandy and silty clay sediments with a novel experimental apparatus |
topic_facet |
Methane Hydrate Depressurization Sandy Sediment Silty Clay Sediment Sediment Deformation Science & Technology Technology Energy & Fuels Engineering SOUTH CHINA SEA GAS-PRODUCTION BEARING SEDIMENTS POROUS-MEDIA PRODUCTION BEHAVIORS THERMAL-STIMULATION SLOPE INSTABILITY CARBON-DIOXIDE DISSOCIATION Chemical |
description |
Extraction of methane from hydrate-bearing sediment (HBS) has aroused increasing interest around the world. However, the decomposition of gas hydrate may cause significant sediment deformation, which is one of the main obstructions for the hydrate exploitation. To investigate the decomposition behaviors of methane hydrate in different sediments and study the sediment deformation during hydrate decomposition, two contrast experiments were carried out in a novel three-dimensional (3-D) high-pressure reactor with a quick-opening component. In this study, synthetic sandy sediment and natural silty clay sediment sampled from the Shenhu Area, South China Sea were used as the HBS. For hydrate in sandy sediment, the pressure-temperature (P-T) relationship is consistent with that of bulk hydrate. However, in silty clay sediment, the hydrate decomposition conditions shift into a higher pressure region than that in sandy sediment, which is mainly due to the small pore particle size and the presence of salinity. In addition, hydrate decomposition conditions in silty clay sediment also vary at different positions in the reactor because of the effects of salinity, organics, minerals and the uneven distribution of the pores and pore particles. Hence, it is considered that there is a variable equilibrium for the methane hydrate deposits in silty clay sediment. Further, Radial Shrinkage Effect of Hydrate Decomposition (RASHEHD) was observed in both experiments. It is possibly a combined consequence of gas seepage and the cementation effect of hydrate. (C) 2016 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Han, Han Wang, Yi Li, Xiao-Sen Yu, Jian-Xing Feng, Jing-Chun Zhang, Yu |
author_facet |
Han, Han Wang, Yi Li, Xiao-Sen Yu, Jian-Xing Feng, Jing-Chun Zhang, Yu |
author_sort |
Han, Han |
title |
Experimental study on sediment deformation during methane hydrate decomposition in sandy and silty clay sediments with a novel experimental apparatus |
title_short |
Experimental study on sediment deformation during methane hydrate decomposition in sandy and silty clay sediments with a novel experimental apparatus |
title_full |
Experimental study on sediment deformation during methane hydrate decomposition in sandy and silty clay sediments with a novel experimental apparatus |
title_fullStr |
Experimental study on sediment deformation during methane hydrate decomposition in sandy and silty clay sediments with a novel experimental apparatus |
title_full_unstemmed |
Experimental study on sediment deformation during methane hydrate decomposition in sandy and silty clay sediments with a novel experimental apparatus |
title_sort |
experimental study on sediment deformation during methane hydrate decomposition in sandy and silty clay sediments with a novel experimental apparatus |
publishDate |
2016 |
url |
http://ir.giec.ac.cn/handle/344007/11781 https://doi.org/10.1016/j.fue1.2016.05.112 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
FUEL http://ir.giec.ac.cn/handle/344007/11781 doi:10.1016/j.fue1.2016.05.112 |
op_doi |
https://doi.org/10.1016/j.fue1.2016.05.112 |
_version_ |
1766068490102374400 |