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Technical Abstract

Least square Q-Kirchhoff migration: implementation and application

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The absorption effect caused by the anelastic nature of earth leads to attenuation of amplitudes and distortion of phases for seismic wave. The so-called Q factor has to be compensated for correct imaging. We propose least square Q-Kirchhoff migration (LSQPSDM) in which absorption is incorporated into Kirchhoff modeling operator and Q compensation is achieved naturally via inversion with proper sparse constraints. With better illumination and Q compensation, fault imaging is naturally enhanced through the proposed least square Q-Kirchhoff migration. The proposed LSQPSDM approach has been applied to a synthetic data and a field dataset from NWS Australia. Better fault imaging and SNR are obtained comparing to conventional Q migration.
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Publications

EAGE - European Association of Geoscientists and Engineers

Authors

Xiaodong Wu, Yu Wang, Yi Xie, Joe Zhou, Dechun Lin, Casasanta Lorenzo

Month

June

Copyright

© 2017 EAGE