A three-dimensional study on methane hydrate decomposition with different methods using five-spot well
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- 作者：Yi Wang ; Xiao-Sen Li ; Gang Li ; Yu Zhang ; Bo Li ; Jing-Chun Feng
- 关键词：Methane hydrate ; Three-dimensional ; Thermal stimulation ; Depressurization ; Five-spot well
- 刊名：Applied Energy
- 出版年：2013
- 出版时间：December, 2013
- 年：2013
- 卷：112
- 期：Complete
- 页码：83-92
- 全文大小：1453 K
文摘
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 281.15 K; and the production pressures are ranged from 4.7 MPa to 7.4 MPa. 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 10 ml/min and 160 ¡ãC, 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.