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

Chaiwoot Boonyasiriwat, Gerard T. Schuster

Research output: Chapter in Book/Report/Conference proceedingConference contribution

33 Scopus citations

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.
Original languageEnglish (US)
Title of host publicationSEG Technical Program Expanded Abstracts 2010
PublisherSociety of Exploration Geophysicists
DOIs
StatePublished - Mar 22 2010

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