GIEC OpenIR  > 中国科学院广州能源研究所
Gas hydrate formation in fine sand
Zang XiaoYa1,2,3; Liang DeQing1,2; Wu NengYou1,2
2013-04-01
Source PublicationSCIENCE CHINA-EARTH SCIENCES
Volume56Issue:4Pages:549-556
AbstractGas hydrate formation from two types of dissolved gas (methane and mixed gas) was studied under varying thermodynamic conditions in a novel apparatus containing two different natural media from the South China Sea. The testing media consisted of silica sand particles with diameters of 150-250 mu m and 250-380 mu m. Hydrate was formed (as in nature) in salt water that occupies the interstitial space of the partially water-saturated silica sand bed. The experiments demonstrate that the rate of hydrate formation is a function of particle diameter, gas source, water salinity, and thermodynamic conditions. The initiation time of hydrate formation was very short and pressure decreased rapidly in the initial stage. The process of mixed gas hydrate formation can be divided into three stages for each type of sediment. Sand particle diameter and water salinity also can influence the formation process of hydrate. The conversion rate of water to hydrate was different under varying thermodynamic conditions, although the formation processes were similar. The conversion rate of methane hydrate in the 250-380 mu m sediment was greater than that in the 150-250 mu m sediment. However, the sediment grain size has no significant influence on the conversion rate of mixed gas hydrate.
SubtypeArticle
KeywordGas Hydrate Formation Kinetics Water Conversion Rate Natural Porous Media Thermodynamic Condition
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s11430-012-4546-5
WOS Subject ExtendedGeology
WOS KeywordMETHANE HYDRATE ; POROUS-MEDIA ; WATER ; SEDIMENTS ; DISSOCIATION ; NUCLEATION ; SAMPLE
Indexed BySCI
Language英语
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000317347200005
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10048
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, Peoples R China
2.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zang XiaoYa,Liang DeQing,Wu NengYou. Gas hydrate formation in fine sand[J]. SCIENCE CHINA-EARTH SCIENCES,2013,56(4):549-556.
APA Zang XiaoYa,Liang DeQing,&Wu NengYou.(2013).Gas hydrate formation in fine sand.SCIENCE CHINA-EARTH SCIENCES,56(4),549-556.
MLA Zang XiaoYa,et al."Gas hydrate formation in fine sand".SCIENCE CHINA-EARTH SCIENCES 56.4(2013):549-556.
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