Abstract
Traditional pre-stack depth migration can only provide subsurface structural information. However, simple structure information is insufficient for petroleum exploration which also needs amplitude information proportional to reflection coefficients. In recent years, pre-stack depth migration algorithms which preserve amplitudes and based on the one-way wave equation have been developed. Using the method in the shot domain requires a deconvolution imaging condition which produces some instability in areas with complicated structure and dramatic lateral variation in velocity. Depth migration with preserved amplitude based on the angle domain can overcome the instability of the one-way wave migration imaging condition with preserved amplitude. It can also offer provide velocity analysis in the angle domain of common imaging point gathers. In this paper, based on the foundation of the one-way wave continuation operator with preserved amplitude, we realized the preserved amplitude prestack depth migration in the angle domain. Models and real data validate the accuracy of the method.
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This work was supported by the National 863 Program (Grant No. 2006AA06Z206), the National 973 Program (Grant No. 2007CB209605), CNPC geophysical laboratories and Ph.D innovative funding in China University of Petroleum (East China).
Ye Yueming graduated from the Geophysical Prospecting Department of China University of Petroleum (East China). He is a PhD student in the Institute of Geology and Geophysics, China University of Petroleum (East China). He is a visiting student at IGPP University of California at Santa Cruz studying true amplitude migration, seismic illumination, and irregular surface migration.
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Ye, Y., Li, Z., Zhu, X. et al. Preserved amplitude migration based on the one way wave equation in the angle domain. Appl. Geophys. 6, 50–58 (2009). https://doi.org/10.1007/s11770-009-0004-3
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DOI: https://doi.org/10.1007/s11770-009-0004-3