Integrated analysis of well logs and seismic data to deduce the possible distribution in depth of gas hydrate in Shenhu Area, South China Sea

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	Integrated analysis of well logs and seismic data to deduce the possible distribution in depth of gas hydrate in Shenhu Area, South China Sea
	Xu Hua-Ning 1; Zhang Guang-Xue 1; Zheng Xiao-Dong 2; Wang Ming-Jun 3; Yang Sheng-Xiong 1; Yang Rui 4; Liang Bei-Wen 1
刊名	chinese journal of geophysics-chinese edition
	2014-10-01
卷号	57 期号:10 页码:3363-3372
关键词	Shenhu Area Natural gas hydrate AVO forward modeling Impedance inversion Depth distribution
英文摘要	the available geological and geophysical information indicates the presence of gas hydrate at shenhu area of northern south china sea. the drilling cores recovered in 2007 testify the expectation and reveal that the gas hydrate disseminates evenly within the hydrate stable zone (hsz), but its regional distribution is inhomogeneous. however, the logging record length and coring depth coverage are limited, which causes the depth distribution of gas hydrate to be indeterminate. logs at well site sh7 were used to link the information of physical properties of sediments to the coincident seismic data acquired in this area. according to the relation between physical properties of sediments and seismic reflection characteristics, three primary formations were calibrated and the pseudo-well constrained impedance inversion was then applied on poststack seismic data. the results showed a high velocity zone below the interval bearing gas hydrate. to determine whether this high velocity zone is related to the occurrence of gas hydrate or not, the technique of avo forward modeling was further used to analyze the reflecting characteristic of pre-stack seismic data. the comparison between synthetic seismic models and real seismic data indicates that the hsz was composed of thin interbeds of gas hydrate-bearing sediments and water-saturated sediments, which suggests that another gas hydrate deposit exists most likely below the depth where gas hydrate-bearing sediments were cored in the hole.
WOS标题词	science & technology ; physical sciences
类目[WOS]	geochemistry & geophysics
研究领域[WOS]	geochemistry & geophysics
关键词[WOS]	continental-margin ; marine-sediments ; methane ; north ; slope
收录类别	SCI
语种	英语
WOS记录号	WOS:000344039800023
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/10762]
专题	中国科学院广州能源研究所
作者单位	1.Guangzhou Marine Geol Survey, MLR Key Lab Marine Mineral Resources, Guangzhou 510075, Guangdong, Peoples R China 2.Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China 3.China Geol Survey, Oil & Gas Survey, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Xu Hua-Ning,Zhang Guang-Xue,Zheng Xiao-Dong,et al. Integrated analysis of well logs and seismic data to deduce the possible distribution in depth of gas hydrate in Shenhu Area, South China Sea[J]. chinese journal of geophysics-chinese edition,2014,57(10):3363-3372.
APA	Xu Hua-Ning.,Zhang Guang-Xue.,Zheng Xiao-Dong.,Wang Ming-Jun.,Yang Sheng-Xiong.,...&Liang Bei-Wen.(2014).Integrated analysis of well logs and seismic data to deduce the possible distribution in depth of gas hydrate in Shenhu Area, South China Sea.chinese journal of geophysics-chinese edition,57(10),3363-3372.
MLA	Xu Hua-Ning,et al."Integrated analysis of well logs and seismic data to deduce the possible distribution in depth of gas hydrate in Shenhu Area, South China Sea".chinese journal of geophysics-chinese edition 57.10(2014):3363-3372.