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An Experimental Analysis of Hydrate Production using Multi-Well, Plate-Type Cell Apparatus  

Bae, Jaeyu (Dept. of Geoenvironmental System Eng., Hanyang University)
Sung, Wonmo (Dept. of Geoenvironmental System Eng., Hanyang University)
Kwon, Sunil (Korea National Oil Corporation)
Publication Information
Korean Chemical Engineering Research / v.45, no.3, 2007 , pp. 304-309 More about this Journal
Abstract
In this study, the "Multi Well Plate-type cell Apparatus" was designed and setup for performing the producing experiments of methane hydrate by depressurization, heat stimulating methods. In order to characterizing the producing mechanism of hydrate through porous materials, the experiments for various producing methods have been conducted with the aid of the apparatus which has high permeability. In the experimental result of depressurization method, the pressure is temporarily increased unlikely conventional gas reservoir due to the sourcing effect of hydrate dissociation in the pore. Meanwhile, the temperature is decreased because of the endothermic reaction while hydrate is dissociated. In the experimental results of heat stimulating method, the dissociation in depressurization method is more slowly processed than that in thermal method, and hence, its gas production is lower. In the case of production right after heating, hydrate is dissociated only near injecting point and the permeability becomes greater at that area only. It infers that the more gas is produced during relatively earlier producing period. Since then, the hydrate is more slowly dissociated than the case of production after heating and soaking. This time, the performances of pressure and production obtained by thermal method have been analyzed in order to investigate the effect of soaking time on gas recovery. As a result, the gas recoveries in the case of 2 min and 4 min soaking are higher than case in 6 min soaking. This is reason that hydrate is reformed due to the decrease of temperature. It is expected that the experimental results obtained in this work may be more clearly explained by utilizing the lower permeable porous system with the greater hydrate saturation.
Keywords
Hydrate; Multi-well Plate-type Cell; Production Experiment; Depressurization; Thermal Stimulation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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