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Experimental Investigation into the Production Behavior of Methane Hydrate in Porous Sediment by Depressurization with a Novel Three-Dimensional Cubic Hydrate Simulator
Li, Xiao-Sen1,2; Zhang, Yu1,2; Li, Gang1,2; Chen, Zhao-Yang1,2; Wu, Hui-Jie1,2
2011-10-01
Source PublicationENERGY & FUELS
Volume25Issue:10Pages:4497-4505
AbstractThe gas production behavior from methane hydrate in a porous sediment by depressurization was investigated in a three-dimensional (3D) cubic hydrate simulator (CHS) at 281.15 K, hydrate saturation of 33.1%, and a production pressure range of 4.5-5.6 MPa. The results show that the gas production process consists of three periods: free gas production, mixed gas (free gas and gas dissociated from the hydrate) production, and gas production from the hydrate dissociation. The temperature in the near-well region in the 3D hydrate reservoir changes during gas production in five stages. In the first period, the free gas in the system is released and the temperature change is not significant. In the second period, the temperature increases because of the reformation of the hydrate. In the third period, the temperature at each measuring point decreases quickly to the lowest value because of the considerable dissociation of the hydrate. The fourth period is the thermostatic hydrate dissociation period. During this period, the temperature at each point remains constant. In the fifth period, the hydrate has almost dissociated completely and the temperatures gradually increase to the environmental temperature of 281.15 K. There is no thermostatic dissociation period in the far-from-well region, in which the temperature at each measuring point gradually increases after it reaches the lowest value. In the third period of gas production, the temperatures in the near-well region are lower than those in the far-from-well region. In the gas production process, the resistances in the hydrate reservoir change with the hydrate dissociation and the flow of the gas and water. It can also be found that the gas production rate and the cumulative gas production increase with the decrease of the pressure. The gas hydrate dissociation in the gas production process is mainly controlled by the rate of the pressure reduction in the system and the heat supplied from the ambient. There is significant water production in the free gas production process. However, there is little water production in the hydrate dissociation process.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ef200757g
WOS Subject ExtendedEnergy & Fuels ; Engineering
WOS KeywordNATURAL-GAS ; DISSOCIATION ; DECOMPOSITION ; EQUILIBRIA ; ENERGY ; SILICA ; ICE
Indexed BySCI
Language英语
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000296212900029
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10378
Collection中国科学院广州能源研究所
Affiliation1.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
Recommended Citation
GB/T 7714
Li, Xiao-Sen,Zhang, Yu,Li, Gang,et al. Experimental Investigation into the Production Behavior of Methane Hydrate in Porous Sediment by Depressurization with a Novel Three-Dimensional Cubic Hydrate Simulator[J]. ENERGY & FUELS,2011,25(10):4497-4505.
APA Li, Xiao-Sen,Zhang, Yu,Li, Gang,Chen, Zhao-Yang,&Wu, Hui-Jie.(2011).Experimental Investigation into the Production Behavior of Methane Hydrate in Porous Sediment by Depressurization with a Novel Three-Dimensional Cubic Hydrate Simulator.ENERGY & FUELS,25(10),4497-4505.
MLA Li, Xiao-Sen,et al."Experimental Investigation into the Production Behavior of Methane Hydrate in Porous Sediment by Depressurization with a Novel Three-Dimensional Cubic Hydrate Simulator".ENERGY & FUELS 25.10(2011):4497-4505.
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