A three-dimensional study on methane hydrate decomposition with different methods using five-spot well

Yi Wang, Xiao-Sen Li, Gang Li, Yu Zhang, Bo Li and Jing-Chun Feng

Applied Energy, 2013, vol. 112, issue C, 83-92

Abstract: The cubic hydrate simulator (CHS) is used to study the methane hydrate production behaviors in porous media with three different methods, which are the depressurization (DP) using a single well, the heat stimulation using five-spot well (HS-5S), and the heat stimulation in conjunction with depressurization using five-spot well (H&D-5S), respectively. During these experiments, the initial hydrate saturations are all 35%; environmental temperatures are all 281.15K; and the production pressures are ranged from 4.7MPa to 7.4MPa. The injection temperature (Tinj) and the rate of hot water injection (Rinj) in the experiments with the HS-5S and H&D-5S methods are 10ml/min and 160°C, respectively. The analysis of hydrate decomposition shows that almost all of the hydrate can be decomposed in the hydrate reservoirs with the above methods. The H&D-5S method, which can obtain the largest volume of gas production, the highest gas production rate, and the shortest production time, is the optimal method for hydrate production in this work.

Keywords: Methane hydrate; Three-dimensional; Thermal stimulation; Depressurization; Five-spot well (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (43)

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DOI: 10.1016/j.apenergy.2013.05.079

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