Experimental Study on Mechanical Properties of Artificial Cores Saturated With Ice: An Analogical Simulation to Natural Gas Hydrate Bearing Sediments
ABSTRACT This work takes the natural gas hydrate (NGH) reservoir in the Shenhu area at the South China Sea as the target. Using the quartz sand, calcite grains, and illite powder as the main mineral composites, and Portland cement as the bonding material, the host skeleton with similar porosity and...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-11-01
|
| Series: | Energy Science & Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/ese3.1903 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841557249922695168 |
|---|---|
| author | Kaixiang Shen Wenwei Xie Yanjiang Yu Yingsheng Wang Zizhen Wang Xiaokang Wang Wensheng Zhang |
| author_facet | Kaixiang Shen Wenwei Xie Yanjiang Yu Yingsheng Wang Zizhen Wang Xiaokang Wang Wensheng Zhang |
| author_sort | Kaixiang Shen |
| collection | DOAJ |
| description | ABSTRACT This work takes the natural gas hydrate (NGH) reservoir in the Shenhu area at the South China Sea as the target. Using the quartz sand, calcite grains, and illite powder as the main mineral composites, and Portland cement as the bonding material, the host skeleton with similar porosity and mechanical properties to the target reservoir were prepared. Ice was used to simulate natural gas hydrates for their high similarity in mechanical properties and distributions within porous host. The ice saturation in the host skeleton is quantitatively controlled by the quality method. As an analogical simulation, artificial samples with different ice saturations were tested by uniaxial compression measurements and the Brazilian tensile tests, aiming to reveal the mechanical behavior of NGH sediments. The results indicated that the plasticity of the artificial sample increases and its damage form transitions from brittleness to ductility as the ice saturation increases. The effects of free water and ice on the strength of saturated samples are quite different. The free water tends to reduce the strength of the sample due to illite hydration and change of internal friction. The bonding effect of ice tends to increase the strength of the sample, while the ice could also reduce the internal friction. When the ice saturation is larger than 30%, the compressive and tensile strengths of the sample increase with ice saturation, which could be regressed as yc = 2.2628S + 0.8322, and yt = 0.411S + 0.0273, respectively. The constitutive model was developed based on the equivalent medium theory and the D‐P criterion, which could describe the experiment data well with deviations less than 10%. |
| format | Article |
| id | doaj-art-92700618196b4a96bacd1258338bcf3a |
| institution | Kabale University |
| issn | 2050-0505 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Energy Science & Engineering |
| spelling | doaj-art-92700618196b4a96bacd1258338bcf3a2025-01-06T14:45:33ZengWileyEnergy Science & Engineering2050-05052024-11-0112114918493110.1002/ese3.1903Experimental Study on Mechanical Properties of Artificial Cores Saturated With Ice: An Analogical Simulation to Natural Gas Hydrate Bearing SedimentsKaixiang Shen0Wenwei Xie1Yanjiang Yu2Yingsheng Wang3Zizhen Wang4Xiaokang Wang5Wensheng Zhang6Guangzhou Marine Geological Survey China Geological Survey, Ministry of Natural Resources Guangzhou ChinaGuangzhou Marine Geological Survey China Geological Survey, Ministry of Natural Resources Guangzhou ChinaGuangzhou Marine Geological Survey China Geological Survey, Ministry of Natural Resources Guangzhou ChinaGuangzhou Marine Geological Survey China Geological Survey, Ministry of Natural Resources Guangzhou ChinaKey Laboratory of Unconventional Oil & Gas Development, Ministry of Education China University of Petroleum (East China) Qingdao ChinaKey Laboratory of Unconventional Oil & Gas Development, Ministry of Education China University of Petroleum (East China) Qingdao ChinaKey Laboratory of Unconventional Oil & Gas Development, Ministry of Education China University of Petroleum (East China) Qingdao ChinaABSTRACT This work takes the natural gas hydrate (NGH) reservoir in the Shenhu area at the South China Sea as the target. Using the quartz sand, calcite grains, and illite powder as the main mineral composites, and Portland cement as the bonding material, the host skeleton with similar porosity and mechanical properties to the target reservoir were prepared. Ice was used to simulate natural gas hydrates for their high similarity in mechanical properties and distributions within porous host. The ice saturation in the host skeleton is quantitatively controlled by the quality method. As an analogical simulation, artificial samples with different ice saturations were tested by uniaxial compression measurements and the Brazilian tensile tests, aiming to reveal the mechanical behavior of NGH sediments. The results indicated that the plasticity of the artificial sample increases and its damage form transitions from brittleness to ductility as the ice saturation increases. The effects of free water and ice on the strength of saturated samples are quite different. The free water tends to reduce the strength of the sample due to illite hydration and change of internal friction. The bonding effect of ice tends to increase the strength of the sample, while the ice could also reduce the internal friction. When the ice saturation is larger than 30%, the compressive and tensile strengths of the sample increase with ice saturation, which could be regressed as yc = 2.2628S + 0.8322, and yt = 0.411S + 0.0273, respectively. The constitutive model was developed based on the equivalent medium theory and the D‐P criterion, which could describe the experiment data well with deviations less than 10%.https://doi.org/10.1002/ese3.1903artificial sampleconstitutive modelmechanical propertiesnatural gas hydrate |
| spellingShingle | Kaixiang Shen Wenwei Xie Yanjiang Yu Yingsheng Wang Zizhen Wang Xiaokang Wang Wensheng Zhang Experimental Study on Mechanical Properties of Artificial Cores Saturated With Ice: An Analogical Simulation to Natural Gas Hydrate Bearing Sediments Energy Science & Engineering artificial sample constitutive model mechanical properties natural gas hydrate |
| title | Experimental Study on Mechanical Properties of Artificial Cores Saturated With Ice: An Analogical Simulation to Natural Gas Hydrate Bearing Sediments |
| title_full | Experimental Study on Mechanical Properties of Artificial Cores Saturated With Ice: An Analogical Simulation to Natural Gas Hydrate Bearing Sediments |
| title_fullStr | Experimental Study on Mechanical Properties of Artificial Cores Saturated With Ice: An Analogical Simulation to Natural Gas Hydrate Bearing Sediments |
| title_full_unstemmed | Experimental Study on Mechanical Properties of Artificial Cores Saturated With Ice: An Analogical Simulation to Natural Gas Hydrate Bearing Sediments |
| title_short | Experimental Study on Mechanical Properties of Artificial Cores Saturated With Ice: An Analogical Simulation to Natural Gas Hydrate Bearing Sediments |
| title_sort | experimental study on mechanical properties of artificial cores saturated with ice an analogical simulation to natural gas hydrate bearing sediments |
| topic | artificial sample constitutive model mechanical properties natural gas hydrate |
| url | https://doi.org/10.1002/ese3.1903 |
| work_keys_str_mv | AT kaixiangshen experimentalstudyonmechanicalpropertiesofartificialcoressaturatedwithiceananalogicalsimulationtonaturalgashydratebearingsediments AT wenweixie experimentalstudyonmechanicalpropertiesofartificialcoressaturatedwithiceananalogicalsimulationtonaturalgashydratebearingsediments AT yanjiangyu experimentalstudyonmechanicalpropertiesofartificialcoressaturatedwithiceananalogicalsimulationtonaturalgashydratebearingsediments AT yingshengwang experimentalstudyonmechanicalpropertiesofartificialcoressaturatedwithiceananalogicalsimulationtonaturalgashydratebearingsediments AT zizhenwang experimentalstudyonmechanicalpropertiesofartificialcoressaturatedwithiceananalogicalsimulationtonaturalgashydratebearingsediments AT xiaokangwang experimentalstudyonmechanicalpropertiesofartificialcoressaturatedwithiceananalogicalsimulationtonaturalgashydratebearingsediments AT wenshengzhang experimentalstudyonmechanicalpropertiesofartificialcoressaturatedwithiceananalogicalsimulationtonaturalgashydratebearingsediments |