Global Geology 2013, 16(2) 113-120 DOI:     ISSN: 1673-9736 CN: 22-1371/P

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Keywords
internal multiples
virtual event
crosscorrelation
Seislet transform
Authors
LIU Yi
LIU Yang* and LU Qi
PubMed
Article by LIU Yi
Article by LIU Yang* and LU Qi

Suppression of internal multiples based on virtual events

LIU Yi, LIU Yang* and LU Qi

College of Geo-Exploration Science and Technology,Jilin University,Changchun 130026,China

Abstract

In practical seismic exploration,internal multiples generated when the wave impedance of medium is strong,and seismic records are recorded. The method of virtual event repress internal multiples is to move scattered points from underground to the surface,similar to the method of the surface-related multiple elimination ( SRME) . The method of SRME belongs to the prediction-subtraction approaches to eliminate internal multiples, prediction method is based on building a brand new way of seismic wave propagation ( virtual reflection and virtual event) ,so that it has forward and backward wave propagation,and through convolution with significant wave to predict the internal multiples. Due to required data needing field information of full-wave,the authors use Seislet transform interpolating the missing data to ensure the premise of internal multiples prediction. The test data show that the above method has achieved good results.

Keywords internal multiples   virtual event   crosscorrelation   Seislet transform  
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