Experimental Research on the Mechanical Properties of Methane Hydrate-Ice Mixtures
The mechanical properties of methane hydrate are important to the stability of borehole and methane extraction from a methane hydrate reservoir. In this study, a series of triaxial compression tests were carried out on laboratory-formed methane hydrate-ice mixtures with various methane hydrate conte...
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| Format: | Article |
| Language: | English |
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MDPI AG
2012-01-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/5/2/181/ |
| _version_ | 1798038931497811968 |
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| author | Feng Yu Yanghui Li Weiguo Liu Yongchen Song |
| author_facet | Feng Yu Yanghui Li Weiguo Liu Yongchen Song |
| author_sort | Feng Yu |
| collection | DOAJ |
| description | The mechanical properties of methane hydrate are important to the stability of borehole and methane extraction from a methane hydrate reservoir. In this study, a series of triaxial compression tests were carried out on laboratory-formed methane hydrate-ice mixtures with various methane hydrate contents. Axial loading was conducted at an axial strain rate of 1.33%/min and a constant temperature of −10 °C. The results indicate that: (1) the deformation behavior is strongly affected by confining pressure and methane hydrate content; (2) the failure strength significantly increases with confining pressure when confining pressure is less than 10 MPa, and decreases with methane hydrate content; (3) the cohesion decreases with methane hydrate content, while the internal friction angle increases with methane hydrate content; (4) the strength of ice specimens are higher than that of methane hydrate-ice mixture specimens; Based on the experimental data, the relationship among failure strength, confining pressure and methane hydrate content was obtained, and a modified Mohr-Coulomb criterion considering the influence of methane hydrate content on shear strength was proposed. |
| first_indexed | 2024-04-11T21:47:00Z |
| format | Article |
| id | doaj.art-ab53cc9c2dc4457e970f521b2ad819d6 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T21:47:00Z |
| publishDate | 2012-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-ab53cc9c2dc4457e970f521b2ad819d62022-12-22T04:01:23ZengMDPI AGEnergies1996-10732012-01-015218119210.3390/en5020181Experimental Research on the Mechanical Properties of Methane Hydrate-Ice MixturesFeng YuYanghui LiWeiguo LiuYongchen SongThe mechanical properties of methane hydrate are important to the stability of borehole and methane extraction from a methane hydrate reservoir. In this study, a series of triaxial compression tests were carried out on laboratory-formed methane hydrate-ice mixtures with various methane hydrate contents. Axial loading was conducted at an axial strain rate of 1.33%/min and a constant temperature of −10 °C. The results indicate that: (1) the deformation behavior is strongly affected by confining pressure and methane hydrate content; (2) the failure strength significantly increases with confining pressure when confining pressure is less than 10 MPa, and decreases with methane hydrate content; (3) the cohesion decreases with methane hydrate content, while the internal friction angle increases with methane hydrate content; (4) the strength of ice specimens are higher than that of methane hydrate-ice mixture specimens; Based on the experimental data, the relationship among failure strength, confining pressure and methane hydrate content was obtained, and a modified Mohr-Coulomb criterion considering the influence of methane hydrate content on shear strength was proposed.http://www.mdpi.com/1996-1073/5/2/181/methane hydratemechanical propertiessafe extraction |
| spellingShingle | Feng Yu Yanghui Li Weiguo Liu Yongchen Song Experimental Research on the Mechanical Properties of Methane Hydrate-Ice Mixtures Energies methane hydrate mechanical properties safe extraction |
| title | Experimental Research on the Mechanical Properties of Methane Hydrate-Ice Mixtures |
| title_full | Experimental Research on the Mechanical Properties of Methane Hydrate-Ice Mixtures |
| title_fullStr | Experimental Research on the Mechanical Properties of Methane Hydrate-Ice Mixtures |
| title_full_unstemmed | Experimental Research on the Mechanical Properties of Methane Hydrate-Ice Mixtures |
| title_short | Experimental Research on the Mechanical Properties of Methane Hydrate-Ice Mixtures |
| title_sort | experimental research on the mechanical properties of methane hydrate ice mixtures |
| topic | methane hydrate mechanical properties safe extraction |
| url | http://www.mdpi.com/1996-1073/5/2/181/ |
| work_keys_str_mv | AT fengyu experimentalresearchonthemechanicalpropertiesofmethanehydrateicemixtures AT yanghuili experimentalresearchonthemechanicalpropertiesofmethanehydrateicemixtures AT weiguoliu experimentalresearchonthemechanicalpropertiesofmethanehydrateicemixtures AT yongchensong experimentalresearchonthemechanicalpropertiesofmethanehydrateicemixtures |