Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator

doi:10.1016/j.apenergy.2014.05.018

GIEC OpenIR > 中国科学院广州能源研究所

	Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator
	Li, Bo 1,2,3; Li, Xiao-Sen1,2 ; Li, Gang1,2 ; Feng, Jing-Chun 1,2,3; Wang, Yi 1,2
	2014-09-15
发表期刊	APPLIED ENERGY
卷号	129 页码:274-286
摘要	The kinetic behaviors of methane hydrate dissociation under depressurization in porous media are investigated through experimental and numerical simulations. Hydrate samples with low gas saturations (S-G <= 0.10) are synthesized in the pilot-scale hydrate simulator (PHS), a novel three-dimensional pressure vessel with effective inner volume of 117.8 L. Three experimental runs with different production pressure at the central vertical well have been carried out. The intrinsic dissociation rate constant k(0) is fitted to be approximately 4578 kg/(m(2) Pa s) using the experimental data of run 1, and it is used for the kinetic simulation in all the three runs. The whole production process can be divided into two stages: the free gas and mixed gas production (stage I) and the gas production from hydrate dissociation (stage II). Both the experimental and numerical simulation results show that the gas production rate increases with the decrease of the production pressure, while the water extraction rate will rise much higher if the wellbore pressure is dropped extremely low. The free gas saturation is found to be a key factor that affects the overall production behaviors of marine hydrate deposits. In addition, the comparisons of the kinetic and equilibrium models indicate that the kinetic limitations are very small in the PHS. The hydrate dissociation under depressurization in the PHS is mainly controlled by the mass and heat transfer processes. (C) 2014 Elsevier Ltd. All rights reserved.
文章类型	Article
关键词	Gas Hydrate Depressurization Porous Media Numerical Simulation Intrinsic Rate
WOS标题词	Science & Technology ; Technology
DOI	10.1016/j.apenergy.2014.05.018
研究领域[WOS]	Energy & Fuels ; Engineering
关键词[WOS]	ETHYLENE-GLYCOL INJECTION ; METHANE-HYDRATE ; POROUS-MEDIA ; PRODUCTION BEHAVIOR ; UNCONSOLIDATED SEDIMENT ; THERMAL-STIMULATION ; 5-SPOT WELL ; PUFF METHOD ; DISSOCIATION ; DECOMPOSITION
收录类别	SCI
语种	英语
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000339775400029
引用统计	被引频次：185[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/10637
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100083, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Li, Bo,Li, Xiao-Sen,Li, Gang,et al. Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator[J]. APPLIED ENERGY,2014,129:274-286.
APA	Li, Bo,Li, Xiao-Sen,Li, Gang,Feng, Jing-Chun,&Wang, Yi.(2014).Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator.APPLIED ENERGY,129,274-286.
MLA	Li, Bo,et al."Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator".APPLIED ENERGY 129(2014):274-286.