Dissociation Kinetics of Methane Hydrate in Frozen Rocks under Decreasing External Pressure: Mathematical nd Experimental Modeling

Авторы: Ramazanov M.M., Bulgakova N.S., Lobkovsky L.I., Chuvilin E.M., Davletshina D.A., Shakhova N.E.
Журнал: Transactions (Doklady) of the Russian Academy of Sciences. Earth Science Sections
Год издания: 2024
Первая страница: 1
Последняя страница: 8
DOI: 10.1134/S1028334X24601391
Аннотация: The results of mathematical and experimental modeling of dissociation of pore methane hydratein ice- and gas-bearing sediments with a decrease in the external pressure below equilibrium are presented. The described model of pore gas hydrate dissociation at negative temperatures, along with the experiment, makes it possible to calculate the kinetics of this process. A comparative analysis of the results is conducted.The proposed mathematical model confirms the trend of decreasing hydrate saturation of frozen soil in the form of obtained previously in experiments. These experiments have made it possible to calculate the coefficients A and n, while the mathematical modeling shows how these coefficients depend on the problem parameters. The theoretically estimated properties of the coefficient fully confirm the experimental data.The results of experimental and mathematical modeling have implications for key factors that determine the self-preservation of pore methane hydrates in frozen sediments.
Добавил в систему: Чувилин Евгений Михайлович

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