NDLI: Seismic reflection characteristics of fluvial sand and shale interbedded layers

Content Provider	Springer Nature Link
Author	Li, Guofa Xiong, Jinliang Zhou, Hui Zhai, Tongli
Copyright Year	2008
Abstract	A sedimentary geological model is established in order to study the seismic reflection characteristics of channel sand bodies. Synthetic seismic shot gathers are simulated using the acoustic wave equation and then are prestack time migrated. On the imaged data, the reflection characteristics and instantaneous attributes are analyzed and log-constrained impedance inversion is tested. Because of wave field interference, the experimental results show that seismic events do not definitely correspond to the channel sand bodies and that seismic modes of occurrence do not represent the actual ones. The seismic events formed by wave interference may lead to errors and pitfalls in sand body interpretation. The corresponding relations between instantaneous seismic attributes and sedimentary sands are not well established. Log-constrained impedance inversion improves the resolution of channel sands. However, if the inverted resolution is forced to be too high, artifacts related to the initial model may occur.
Starting Page	219
Ending Page	229
Page Count	11
File Format	PDF
ISSN	16727975
Journal	Applied Geophysics
Volume Number	5
Issue Number	3
e-ISSN	19930658
Language	English
Publisher	Chinese Geophysical Society
Publisher Date	2008-12-20
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Continental sedimentation channel sand wave field simulation]wavelet interference impedance inversion Applied Earth Sciences Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Geophysics

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