Study of regimes for methane - carbon dioxide replacement in natural gas hydrates by liquid carbon dioxide injection into a porous stratum
M.K. Khasanov1, M.V. Stolpovsky1,2, I.K. Gimaltdinov2
1Sterlitamak Branch BashSU, Sterlitamak, Russia
2Ufa State Petroleum Technological University, Ufa, Russia
Keywords: filtration, gas hydrate, replacement
Abstract
A developed mathematical model offers a study of methane-carbon dioxide replacement in gas hydrate through injection of liquid carbon dioxide into a porous stratum with final sizes. Depending on the parameters of injected carbon dioxide flow and depending on the stratum boundary conditions, the process of formation of the gas hydrate comprising carbon dioxide can occur through methane replacement in the gas hydrate or through the formation of zones with free methane and water. The critical diagrams are presented that map the conditions for both regimes.
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