Simulation of gas production from hydrate reservoir by the combination of warm water flooding and depressurization
- 158 Downloads
Gas production from hydrate reservoir by the combination of warm water flooding and depressurization is proposed, which can overcome the deficiency of single production method. Based on the combination production method, the physical and mathematical models are developed to simulate the hydrate dissociation. The mathematical model can be used to analyze the effects of the flow of multiphase fluid, the kinetic process of hydrate dissociation, the endothermic process of hydrate dissociation, ice-water phase equilibrium, the convection and conduction on the hydrate dissociation and gas and water production. The mechanism of gas production by the combination of warm water flooding and depressurization is revealed by the numerical simulation. The evolutions of such physical variables as pressure, temperature, saturations and gas and water rates are analyzed. Numerical results show that under certain conditions the combination method has the advantage of longer stable period of high gas rate than the single producing method.
Keywordsnatural gas hydrate reservoir warm water flooding depressurization numerical simulation
Unable to display preview. Download preview PDF.
- 1.Kvenvolden K A. A primer on the geological occurrence of gas hydrate. Geol Soc London, 1998, Spec Publ 137, 9–30Google Scholar
- 2.Burshears M, Obrien T J, Malone R D. A multi-phase, multi-dimensional, variable composition simulation of gas production from a conventional gas reservoir in contact with hydrates. SPE 15246, 1986, 449–453Google Scholar
- 3.Wu S G, Yao B C. Geologic Structure and Resource Evaluation of Gas Hydrate (in Chinese). Beijing: Science Press, 2008Google Scholar
- 5.Makogon Y F. Hydrate of Hydrocarbons. Tulsa, Oklahoma: Penn-Well Publishing Co, 1997Google Scholar
- 9.Yousif M H, Abass H H, Selim M S, et al. Experimental and theoretical investigation of methane-gas-hydrate dissociation in porous media. SPE 18320, 1991, 69–76Google Scholar
- 10.Moridis G J. Numerical studies of gas production from methane hydrates. SPE 87330, 2002, 1–11Google Scholar
- 15.Kamath V. Study of heat transfer characteristics during dissociation of gas hydrate in porous media. PhD Thesis. Pittsburgh: University of Pittsburgh, 1983Google Scholar
- 17.Mcguire P L. Recovery of gas form hydrate deposits using conventional technology. SPE 10832, 1982, 373–379Google Scholar
- 20.Lake L W. Enhanced Oil Recovery. Upper Saddle River, NJ: Prentice-Hall Inc, 1989Google Scholar
- 21.Sloan E D. Clathrate hydrates of natural gases. 2nd ed. New York: Marcel Deckker, 1998Google Scholar
- 22.Bai Y H, Li Q P, Yu X C, et al. Numerical study on the dissociation of gas hydrate and its sensitivity to physical parameters. China Ocean Eng, 2007, 21(4): 625–636Google Scholar