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Global Geology 2013, 16(2) 113-120 DOI:
ISSN: 1673-9736 CN: 22-1371/P |
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Suppression of internal multiples based on virtual events |
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LIU Yi, LIU Yang* and LU Qi |
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College of Geo-Exploration Science and Technology��Jilin University��Changchun 130026��China |
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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�� |
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Keywords��
internal multiples
virtual event
crosscorrelation
Seislet transform
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Received Revised Online: |
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