Effect of Clay Content on the Mechanical Properties of Hydrate-Bearing Sediments during Hydrate Production via Depressurization
The effects of sediments with different clay contents on the mechanical properties of hydrate deposits were studied using a high-pressure, low-temperature triaxial apparatus with in-situ synthesis, as well as the mechanical properties of self-developed hydrate sediments. Through multi-stage loading,...
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MDPI AG
2019-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/14/2684 |
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doaj-b2cc6da792474aff9a4be5f7b7681dca2020-11-24T21:54:38ZengMDPI AGEnergies1996-10732019-07-011214268410.3390/en12142684en12142684Effect of Clay Content on the Mechanical Properties of Hydrate-Bearing Sediments during Hydrate Production via DepressurizationDongliang Li0Zhe Wang1Deqing Liang2Xiaoping Wu3Key Laboratory of Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, ChinaKey Laboratory of Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, ChinaKey Laboratory of Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, ChinaSchool of Earth & Space Science, University of Science and Technology of China, Hefei 230026, ChinaThe effects of sediments with different clay contents on the mechanical properties of hydrate deposits were studied using a high-pressure, low-temperature triaxial apparatus with in-situ synthesis, as well as the mechanical properties of self-developed hydrate sediments. Through multi-stage loading, triaxial compression tests were conducted by adding quartz sand with different clay contents as the sediment skeleton, and the stress−strain relationship of the shearing process and the strength of sediments with different clay contents were determined. Volumetric changes were also observed during shearing. The results show that the strength of hydrate sediments decreases with the increasing clay content of sediments; in the processes of depressurization and shearing, the hydrate samples exhibited obvious shear shrinkage, regardless of the sediment particle size.https://www.mdpi.com/1996-1073/12/14/2684triaxial shearmethane hydrateclay contentmechanical propertyhydrate miningshear shrinkage |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Dongliang Li Zhe Wang Deqing Liang Xiaoping Wu |
| spellingShingle |
Dongliang Li Zhe Wang Deqing Liang Xiaoping Wu Effect of Clay Content on the Mechanical Properties of Hydrate-Bearing Sediments during Hydrate Production via Depressurization Energies triaxial shear methane hydrate clay content mechanical property hydrate mining shear shrinkage |
| author_facet |
Dongliang Li Zhe Wang Deqing Liang Xiaoping Wu |
| author_sort |
Dongliang Li |
| title |
Effect of Clay Content on the Mechanical Properties of Hydrate-Bearing Sediments during Hydrate Production via Depressurization |
| title_short |
Effect of Clay Content on the Mechanical Properties of Hydrate-Bearing Sediments during Hydrate Production via Depressurization |
| title_full |
Effect of Clay Content on the Mechanical Properties of Hydrate-Bearing Sediments during Hydrate Production via Depressurization |
| title_fullStr |
Effect of Clay Content on the Mechanical Properties of Hydrate-Bearing Sediments during Hydrate Production via Depressurization |
| title_full_unstemmed |
Effect of Clay Content on the Mechanical Properties of Hydrate-Bearing Sediments during Hydrate Production via Depressurization |
| title_sort |
effect of clay content on the mechanical properties of hydrate-bearing sediments during hydrate production via depressurization |
| publisher |
MDPI AG |
| series |
Energies |
| issn |
1996-1073 |
| publishDate |
2019-07-01 |
| description |
The effects of sediments with different clay contents on the mechanical properties of hydrate deposits were studied using a high-pressure, low-temperature triaxial apparatus with in-situ synthesis, as well as the mechanical properties of self-developed hydrate sediments. Through multi-stage loading, triaxial compression tests were conducted by adding quartz sand with different clay contents as the sediment skeleton, and the stress−strain relationship of the shearing process and the strength of sediments with different clay contents were determined. Volumetric changes were also observed during shearing. The results show that the strength of hydrate sediments decreases with the increasing clay content of sediments; in the processes of depressurization and shearing, the hydrate samples exhibited obvious shear shrinkage, regardless of the sediment particle size. |
| topic |
triaxial shear methane hydrate clay content mechanical property hydrate mining shear shrinkage |
| url |
https://www.mdpi.com/1996-1073/12/14/2684 |
| work_keys_str_mv |
AT dongliangli effectofclaycontentonthemechanicalpropertiesofhydratebearingsedimentsduringhydrateproductionviadepressurization AT zhewang effectofclaycontentonthemechanicalpropertiesofhydratebearingsedimentsduringhydrateproductionviadepressurization AT deqingliang effectofclaycontentonthemechanicalpropertiesofhydratebearingsedimentsduringhydrateproductionviadepressurization AT xiaopingwu effectofclaycontentonthemechanicalpropertiesofhydratebearingsedimentsduringhydrateproductionviadepressurization |
| _version_ |
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