Mathematical Model of Carbon Dioxide Injection into a Porous Reservoir Saturated with Methane and Its Gas Hydrate

Marat K. Khasanov, Guzal R. Rafikova and Nail G. Musakaev
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Marat K. Khasanov: Department of Applied Informatics and Programming, Sterlitamak Branch of Bashkir State University, 453100 Sterlitamak, Russia
Guzal R. Rafikova: Department of Applied Informatics and Programming, Sterlitamak Branch of Bashkir State University, 453100 Sterlitamak, Russia
Nail G. Musakaev: Department of Applied Informatics and Programming, Sterlitamak Branch of Bashkir State University, 453100 Sterlitamak, Russia

Energies, 2020, vol. 13, issue 2, 1-17

Abstract: In this paper, the process of methane replacement in gas hydrate with carbon dioxide during CO 2 injection into a porous medium is studied. A model that takes into account both the heat and mass transfer in a porous medium and the diffusion kinetics of the replacement process is constructed. The influences of the diffusion coefficient, the permeability and extent of a reservoir on the time of full gas replacement in the hydrate are analyzed. It was established that at high values of the diffusion coefficient in hydrate, low values of the reservoir permeability, and with the growth of the reservoir length, the process of the CH 4 -CO 2 replacement in CH 4 hydrate will take place in the frontal regime and be limited, generally, by the filtration mass transfer. Otherwise, the replacement will limited by the diffusion of gas in the hydrate.

Keywords: gas hydrates; carbon dioxide; replacement CH 4 -CO 2; porous medium; diffusion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (6)

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