Numerical modeling for the mechanical behavior of marine gas hydrate-bearing sediments during hydrate production by depressurization

2019 ◽  
Vol 177 ◽  
pp. 971-982 ◽  
Author(s):  
Xiang Sun ◽  
Lei Wang ◽  
Hao Luo ◽  
Yongchen Song ◽  
Yanghui Li
Keyword(s):  
Numerical Modeling ◽  
Mechanical Behavior ◽  
Gas Hydrate ◽  
Marine Gas Hydrate ◽  
Hydrate Bearing Sediments

scholarly journals Coupled Numerical Modeling of Gas Hydrate-Bearing Sediments: From Laboratory to Field-Scale Analyses

2018 ◽  
Vol 123 (12) ◽  
pp. 10,326-10,348 ◽  
Author(s):  
Marcelo Sánchez ◽  
Carlos Santamarina ◽  
Mehdi Teymouri ◽  
Xuerui Gai
Keyword(s):  
Numerical Modeling ◽  
Gas Hydrate ◽  
Field Scale ◽  
Hydrate Bearing Sediments

scholarly journals Physical Properties of Gas Hydrate-Bearing Pressure Core Sediments in the South China Sea

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Jiangong Wei ◽  
Tingting Wu ◽  
Xiuli Feng ◽  
Jinqiang Liang ◽  
Wenjing Li ◽  
...  
Keyword(s):  
South China Sea ◽  
Physical Properties ◽  
Mechanical Behavior ◽  
South China ◽  
Gas Hydrates ◽  
Gas Hydrate ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Hydrate Bearing Sediments

Gas hydrates are a potential future energy resource and are widely distributed in marine sediments and permafrost areas. The physical properties and mechanical behavior of gas hydrate-bearing sediments are of great significance to seafloor stability and platform safety. In 2013, a large number of pressure cores were recovered during China’s second gas hydrate drilling expedition in the South China Sea. In this study, we determined the gas hydrate distribution, saturation, physical properties, and mechanical behavior of the gas hydrate-bearing sediments by conducting Multi-Sensor Core Logger measurements and triaxial and permeability tests. Disseminated gas hydrates, gas hydrate veins, and gas hydrate slabs were observed in the sediments. The gas hydrate distribution and saturation are spatially heterogeneous, with gas hydrate saturations of 0%–55.3%. The peak deviatoric stress of the gas hydrate-bearing sediments is 0.14–1.62 MPa under a 0.15–2.3 MPa effective confining stress. The permeability is 0.006– 0.095 × 10 − 3   μ m 2 , and it decreases with increasing gas hydrate saturation and burial depth.

scholarly journals Pore water sulfate, alkalinity, and carbon isotope profiles in shallow sediment above marine gas hydrate systems: A numerical modeling perspective

2011 ◽  
Vol 116 (B9) ◽  
Author(s):  
Sayantan Chatterjee ◽  
Gerald R. Dickens ◽  
Gaurav Bhatnagar ◽  
Walter G. Chapman ◽  
Brandon Dugan ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Carbon Isotope ◽  
Pore Water ◽  
Gas Hydrate ◽  
Marine Gas Hydrate
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