Volume 10, no. 4Pages 124 - 131

Mathematical Model of Methane Replacement Process in Gas Hydrate with Carbon Dioxide in A Porous Layer

M.К. Khasanov, M.V. Stolpovsky, S.R. Kildibaeva
In this article we construct a mathematical model and examine the characteristics of the injection of carbon dioxide into the natural layer, rich of the methane and its hydrate in its initial state. We consider the case in which due to the injection of carbon dioxide in the layer two areas are formed: in the first (proximal) region the pores of the layer are saturated with carbon dioxide and its hydrate but in the second (distant) region the pores of the layer are saturated with methane and its hydrate. In the numerical experiments it was established when the pressure increasing on the right border of the layer and decreasing the permeability of the layer or of the pressure of the of carbon dioxide injected, the temperature of the layer can rise at the front of the replacement above the equilibrium temperature of gas hydrate decomposition of methane that corresponds to the appearance of the dissociation border of gas hydrate to methane and water.
Full text
gas hydrate; porous layer; methane; carbon dioxide; replacement.
1. Makogon Y.F., Omelchenko R.Y. [Messoyakha - Gas Hydrate Deposit, Role and Significance]. Geologiya i poleznyye iskopayemyye mirovogo okeana [Geology and Minerals of the World Ocean], 2012, no. 3, pp. 5-19. (in Russian)
2. Herath D., Khan F. Probabilistic Estimation of Hydrate Formation. Journal of Petroleum Science and Engineering, 2015, vol. 135, pp. 32-38.
3. Nago A., Nieto A. Natural Gas Production from Methane Hydrate Deposits Using CO2 Clathrate Sequestration: State-of-Art Review and New Technical Approaches. Journal of Geological Research, 2011, p. 239397. Available at: http://www.hindawi.i.com/jornal/jgr/2011/239397. DOI: 10.1155/2011/239397.
4. Parshall J. Production Method for Methane Hydrate Sees Scientific Success. Journal of Petroleum Technology, 2012, vol. 64, no. 8, pp. 50-51.
5. Akserold S.M. [Development of Deposits of Methanehydrates Method of Substitution of Methane with Carbon Dioxide (Materials of Foreign Literature)]. Karotazhnik [Well Logger], 2014, no. 8 (242), pp. 70-102. (in Russian)
6. Khasanov M.K., Shagapov V.Sh. Methane Gas Hydrate Decomposition in a Porous Medium Upon Injection of a Warm Carbon Dioxide Gas. Journal of Engineering Physics and Thermophysics, 2016, vol. 89, no. 5, pp. 1123-1133.
7. Shagapov V.Sh., Khasanov M.K., Musakaev N.G., Ngoc Hai Duong. Theoretical Research of the Gas Hydrate Deposits Development Using the Injection of Carbon Dioxide. International Journal of Heat and Mass Transfer, 2017, vol. 107, pp. 347-357.
8. Byk S.Sh. Gazovyye gidraty [Gas Hydrates]. Moscow, Khimiya, 1980.
9. Tsypkin G.G. Formation of Carbon Dioxide Hydrate at the Injection of Carbon Dioxide into a Depleted Hydrocarbon Field. Fluid Dynamics, 2014, vol. 49, no. 6, pp. 789-795.
10. Khasanov M.K. Investigation of Regimes of Gas Hydrate Formation in a Porous Medium, Partially Saturated with Ice. Thermophysics and Aeromechanics, 2015, vol. 22, no. 2, pp. 255-265.
11. Khasanov M.K., Gimaltdinov I.K., Musakaev N.G. Features of the Decomposition of Gas Hydrates with the Formation of Ice in a Porous Medium. Journal of Engineering Physics and Thermophysics, 2015, vol. 88, no. 5, pp. 1052-1061.
12. Shagapov V.S., Khasanov M.K., Gimaltdinov I.K., Stolpovsky M.V. The Features of Gas Hydrate Dissociation in Porous Media at Warm Gas Injection. Thermophysics and Aeromechanics, 2013, vol. 20, no. 3, pp. 347-454. (in Russian)
13. Shagapov V.Sh, Khasanov M.K., Gimaltdinov I.K., Stolpovskii M.V. Numerical Modeling of Formation of a Gas Hydrate in a Finite-Length Porous Bed Purged by a Gas. Journal of Applied Mechanics and Technical Physics, 2011, vol. 52, no. 4, pp. 599-607. (in Russian)