INJECTION OF LIQUID CARBON DIOXIDE INTO A BED PARTIALLY SATURATED WITH METHANE HYDRATE
V.S. Shagapov1, M.K. Khasanov2, N.G. Musakaev3,4
1Mavlyutov Institute of Mechanics, Ufa Scientific Center, Russian Academy of Sciences, Ufa, 450054, Russia
2Sterlitamak Branch of Bashkir State University, Sterlitamak, 453103, Russia
3Tyumen Branch of Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of Russian Academy of Sciences, Tyumen, 625026, Russia
4Tyumen State University, Tyumen, 625026, Russia
Keywords: пористая среда, фильтрация, газогидрат, замещение, диоксид углерода, кипение, porous medium, filtration, gas hydrate, substitution, carbon dioxide, boiling
Abstract
A mathematical model is proposed to describe the substitution of carbon dioxide for methane in gas hydrate upon injection of liquid carbon dioxide into a porous medium initially saturated with methane and its hydrate. Self-similar solutions of the axisymmetric problems that describe the distribution of the main parameters of the bed are constructed. It is shown that there are solutions, according to which the process can occur both with and without boiling of carbon dioxide. Diagrams of the existence of each type of solution are constructed.
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