Abstract
The dissociation of gas hydrate coexisting with ice in a low-temperature natural reservoir is investigated. A mathematical model of the process consisting of a generalization of the Stefan problem and containing two unknown moving phase transition boundaries — the hydrate dissociation and ice melting fronts — is constructed. It is shown that in high-permeability reservoirs the velocity of the dissociation surface is higher than that of the ice melting surface. As the permeability decreases, the fronts change places. The problem is solved in the self-similar approximation.
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Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No.2, pp. 84–92, March–April, 1993.
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Tsypkin, G.G. Mathematical model of the dissociation of gas hydrates coexisting with ice in natural reservoirs. Fluid Dyn 28, 223–229 (1993). https://doi.org/10.1007/BF01051211
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DOI: https://doi.org/10.1007/BF01051211