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Experimental and Numerical Studies on Gas Production from Methane Hydrate in Porous Media by Depressurization in Pilot-Scale Hydrate Simulator
Li, Gang; Li, Bo; Li, Xiao-Sen; Zhang, Yu; Wang, Yi
2012-10-01
发表期刊ENERGY & FUELS
卷号26期号:10页码:6300-6310
摘要

Dissociation processes of methane hydrate in porous media using the depressurization method are investigated by a combination of experimental observations and numerical simulations. In situ methane hydrate is synthesized in the Pilot-Scale Hydrate Simulator (PHS), a three-dimensional (3D) 117.8-L pressure vessel. During the experiment, constant-pressure depressurization method is used during the hydrate dissociation. A vertical well at the axis of the PHS is used as the production well. The initial hydrate and aqueous saturations before dissociation are S-H0 = 27% and S-A0 = 37% in volume, respectively. The hydrate dissociates continuously under depressurization and there is little hydrate remaining in the PHS. The hydrate dissociation is an analog of a moving boundary ablation process, and the hydrate dissociation interface separates the hydrate dissociated zone containing only gas and water from the undissociated zone containing the hydrate. The temperature increases in the hydrate dissociated zone near the boundaries, while that in the hydrate undissociated zone around the PHS center basically remains constant. The numerical results of the cumulative gas produced, the remaining hydrate in the deposit, and the temperature spatial distribution all agree well with the experiments, which completes the validation of the mathematical model and numerical codes employed in this study. The heat transfer from the surroundings is predominant in our experimental and numerical cases. The analysis of sensitivity to the intrinsic permeability and the initial hydrate saturation of the numerical simulation are investigated.

文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1021/ef301229k
研究领域[WOS]Energy & Fuels ; Engineering
关键词[WOS]PRODUCTION BEHAVIOR ; PUFF METHOD ; DISSOCIATION ; DECOMPOSITION ; INJECTION ; SEDIMENT ; DEPOSITS ; SCHEME ; HUFF ; SEA
收录类别SCI
语种英语
WOS类目Energy & Fuels ; Engineering, Chemical
WOS记录号WOS:000309902200026
引用统计
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10170
专题中国科学院广州能源研究所
作者单位Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714
Li, Gang,Li, Bo,Li, Xiao-Sen,et al. Experimental and Numerical Studies on Gas Production from Methane Hydrate in Porous Media by Depressurization in Pilot-Scale Hydrate Simulator[J]. ENERGY & FUELS,2012,26(10):6300-6310.
APA Li, Gang,Li, Bo,Li, Xiao-Sen,Zhang, Yu,&Wang, Yi.(2012).Experimental and Numerical Studies on Gas Production from Methane Hydrate in Porous Media by Depressurization in Pilot-Scale Hydrate Simulator.ENERGY & FUELS,26(10),6300-6310.
MLA Li, Gang,et al."Experimental and Numerical Studies on Gas Production from Methane Hydrate in Porous Media by Depressurization in Pilot-Scale Hydrate Simulator".ENERGY & FUELS 26.10(2012):6300-6310.
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