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- W3209175063 abstract "The evolution of porosity and permeability of silty clay sediments in the South China Sea has significant effect on gas hydrate production due to the stress effect of submarine overburden rocks. The gas permeability of silty clay specimens under different effective stresses was measured in a cylindrical stainless steel reaction vessel. The experimental results in this paper show that application of effective stress destroys gas permeability of methane hydrate specimens. The power function relation between permeability and effective stress and exponential function relation between porosity and effective stress are given. The experimental data show that the formation of methane hydrate improves the compressible channel of montmorillonite deposits. The permeability damage rate increases with increase of effective stress, and stress sensitivity coefficient increases first and then decreases with increase of effective stress. Finally, an effective permeability equation of sediment containing hydrate saturation and effective stress parameters is established. The results are of guiding significance for the study of the stress dependence of porosity and permeability of gas hydrate silty clay reservoirs in the South China Sea." @default.
- W3209175063 created "2021-11-08" @default.
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- W3209175063 date "2022-01-01" @default.
- W3209175063 modified "2023-10-18" @default.
- W3209175063 title "Stress dependence of the gas permeability of montmorillonite sediments in the presence of methane hydrate" @default.
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- W3209175063 doi "https://doi.org/10.1016/j.petrol.2021.109697" @default.
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