3D Multisource Full-Waveform Inversion using Dynamic Random Phase Encoding

Abstract
We have developed a multisource full-waveform inversion algorithm using a dynamic phase encoding strategy with dual-randomization—both the position and polarity of simultaneous sources are randomized and changed every iteration. The dynamic dual-randomization is used to promote the destructive interference of crosstalk noise resulting from blending a large number of common shot gathers into a supergather. We compare our multisource algorithm with various algorithms in a numerical experiment using the 3D SEG/EAGE overthrust model and show that our algorithm provides a higher-quality velocity tomogram than the other methods that use only monorandomization. This suggests that increasing the degree of randomness in phase encoding should improve the quality of the inversion result.

Citation
Boonyasiriwat, C., & Schuster, G. T. (2010). 3D Multisource Full-Waveform Inversion using Dynamic Random Phase Encoding. SEG Technical Program Expanded Abstracts 2010. doi:10.1190/1.3513025

Publisher
Society of Exploration Geophysicists

Journal
SEG Technical Program Expanded Abstracts 2010

Conference/Event Name
SEG Technical Program Expanded Abstracts 2010

DOI
10.1190/1.3513025

Additional Links
http://library.seg.org/doi/abs/10.1190/1.3513025

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