Release:2015, Vol. 1. №2(2)
About the authors:Vladislav Sh. Shagapov, Dr. Sci. (Phys.-Math.), Professor, Chief Researcher, Mavlyutov Institute of Mechanics, Ufa Investigation Center of the Russian Academy of Sciences; email@example.com
Abstract:A theoretical model for the description of the initial stage of formation of the hydrate layer at the interface of water and gas hydrate is suggested. According to the present model, this stage (called the induction period), is followed by dissolution of the gas in the water, as well as the formation and growth of the hydrate zone in the bulk impurity particles near the contact. The analytical solution for the characteristic time during which the volume content of the hydrate phase reaches unity is obtained; the unity leads to ﬁ lm - forming, prior to hydrate layer at the gas – water border. This is the typical time taken for the induction. According to the formula, the induction period is inversely dependent on the magnitude of the static pressure of minus two and the third degree of impurity particles.
1. Makogon, Y. F. Hydrates of Natural Gases. M.: Nedra, 1974. 208 p.
2. Istomin, V. A., Yakushev, V. S. Gas hydrates in nature. M.: Nedra, 1992. 234 p.
3. Melnikov, V. P., Nesterov, A. N. The use of surfactants in the technologies of transportation and storage of natural gas in the form of gas hydrates // Fundamental problems of oil and gas development, production and transportation of hydrocarbons. Material between. Conf.
2004. P. 98.
4. Nesterov, A. N. The use of surfactants for the intensiﬁcation of the processes of formation of hydrates in the technologies of transportation and storage of gas hydrate // The current state of research in the world, and the practical results for the gas industry. M.: OOO Gazprom RPI, 2004. P. 66.
5. Rehder, G. et al. Enhanced lifetime of methane bubble streams within the deep ocean // Geophysical research letters. 2002. № 29. P. 21.
6. Luoa, Y.-T. et al. Study on the kinetics of hydrate formation in a bubble column // Chemical Engineering Science. 2007. № 62. P. 1000.
7. Vlasov, V. A. Phenomenological diffusion theory of formation of gas hydrate from ice powder // Theor. Found. Chem. Eng. 2012. Vol. 46. № 6. P. 576.
8. Gentz, T. et al. A water column study of methane around gas ﬂares located at the West Spitsbergen continental margin // Continental Shelf Research. 2014. Vol. 72. P. 107.
9. Nigmatulin, R. I. The dynamics of multiphase media. M.: Nauka, 1987. Vol. 1. P. 464.
10. Frank-Kamenetsky, D. A. Diffusion and Heat Transfer in Chemical Kinetics. M.: Nauka, 1987. P. 502.
11. Namiot, A.Y. The solubility of gases in water. M.: Nedra, 1981. 177 p.