An effective method for shear-wave velocity prediction in sandstones

doi:10.1007/s11001-019-09396-4

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 深海地球物理与资源研究室

	An effective method for shear-wave velocity prediction in sandstones
	Wang, Jiliang 2; Wu, Shiguo 2; Zhao, Luanxiao 3; Wang, Weiwei 1; Wei, Jiangong 1; Sun, Jin 2
刊名	MARINE GEOPHYSICAL RESEARCH
	2019-11-01
页码	10
关键词	S-wave velocity prediction Granular-medium model Sandstones
ISSN号	0025-3235
DOI	10.1007/s11001-019-09396-4
英文摘要	Shear-wave velocity is essential in various seismic exploration applications, including seismic modeling, amplitude variation with offset analysis, multicomponent seismic data interpretation and other exploration applications. This study presents a simple but effective method for S-wave velocity prediction from P-wave velocity based on granular media model. In the proposed method, the soft-sand, intermediate stiff-sand and stiff-sand models are unified with the expression of the soft-sand model with an effective coordination number. The shear modulus of dry rocks can be related to bulk modulus through the coordination number in the unified model. Elastic-wave velocities of water-saturated rocks at low frequencies can be predicted from the moduli of dry rock using Gassmann's equation. Thus, the coordination number can be inverted from P-wave velocity of saturated rocks by combining the unified granular media model and Gassmann's equation. Eventually, S-wave velocity of saturated rock is computed with the inverted effective coordination number. The numerical results indicate that the predicted S-wave velocities agree well with the measured velocities for the laboratory data and well logging data. The proposed method is applicable to sandstones with lithification of large ranges because the unified granular media model accounts for the media between Hashin-Shtrikman lower bound and upper bound. Moreover, the new method is quite suitable for the prediction of S-wave velocity in sandstones deposited in deep-water environment, particularly for turbidite sediment.
资助项目	National Key Research and Development Program of China[2018YFC0310105] ; Hainan Provincial Natural Science Foundation of China[418MS120] ; Innovative Research Team Program of Natural Science Foundation of Hainan Province[2018CXTD346] ; Major State Basic Research Development Program[2015CB251201]
WOS关键词	ROCK PHYSICS MODEL ; POROSITY ; MEDIA
WOS研究方向	Geochemistry & Geophysics ; Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000493717900001
资助机构	National Key Research and Development Program of China ; Hainan Provincial Natural Science Foundation of China ; Innovative Research Team Program of Natural Science Foundation of Hainan Province ; Major State Basic Research Development Program
内容类型	期刊论文
源URL	[http://ir.idsse.ac.cn/handle/183446/7417]
专题	深海科学研究部_深海地球物理与资源研究室
通讯作者	Wang, Jiliang
作者单位	1.Guangzhou Marine Geol Survey, Guangzhou 510075, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China 3.Tongji Univ, State Lab Marine Geol, Shanghai 200092, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jiliang,Wu, Shiguo,Zhao, Luanxiao,et al. An effective method for shear-wave velocity prediction in sandstones[J]. MARINE GEOPHYSICAL RESEARCH,2019:10.
APA	Wang, Jiliang,Wu, Shiguo,Zhao, Luanxiao,Wang, Weiwei,Wei, Jiangong,&Sun, Jin.(2019).An effective method for shear-wave velocity prediction in sandstones.MARINE GEOPHYSICAL RESEARCH,10.
MLA	Wang, Jiliang,et al."An effective method for shear-wave velocity prediction in sandstones".MARINE GEOPHYSICAL RESEARCH (2019):10.