NDLI: AVO inversion based on common shot migration

Content Provider	Springer Nature Link
Author	Shou, Hao Liu, Hong Gao, Jianhu
Copyright Year	2006
Abstract	Conventional AVO inversion utilizes the trace amplitudes of CMP gathers. There are three main factors affecting the accuracy of the inversion. First, CMP gathers are based on the hypothesis of horizontal layers but most real layers are not horizontal. Greater layer dip results in a greater difference between the observed CMP gathers and their real location. Second, conventional processing flows such as NMO, DMO, and deconvolution will distort amplitudes. Third, the formulation of reflection coefficient is related to incidence angles and it is difficult to get the relationship between amplitude and incidence angle. Wave equation prestack depth migration has the ability of imaging complex media and steeply dipping layers. It can reduce the errors of conventional processing and move amplitudes back to their real location. With true amplitude migration, common angle gathers abstraction, and AVO inversion, we suggest a method of AVO inversion from common shot gathers in order to reduce the effect of the above factors and improve the accuracy of AVO inversion.
Starting Page	98
Ending Page	104
Page Count	7
File Format	PDF
ISSN	16727975
Journal	Applied Geophysics
Volume Number	3
Issue Number	2
e-ISSN	19930658
Language	English
Publisher	Chinese Geophysical Society
Publisher Date	2006-01-01
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	amplitude preserved migration reflection coefficient angle gather AVO attribute inversion Applied Geosciences Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Geophysics

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