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An effective method for shear-wave velocity prediction in sandstones

文献类型：期刊论文

作者Wang, Jiliang3; Wu, Shiguo3; Zhao, Luanxiao2; Wang, Weiwei1; Wei, Jiangong1; Sun, Jin3
刊名MARINE GEOPHYSICAL RESEARCH
出版日期2019-11-01
页码10
关键词S-wave velocity prediction Granular-medium model Sandstones
ISSN号0025-3235
DOI10.1007/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.
WOS关键词ROCK PHYSICS MODEL ; POROSITY ; MEDIA
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研究方向Geochemistry & Geophysics ; Oceanography
语种英语
WOS记录号WOS:000493717900001
出版者SPRINGER
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
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.Tongji Univ, State Lab Marine Geol, Shanghai 200092, Peoples R China
3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, 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.

入库方式： OAI收割

来源：深海科学与工程研究所

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