An improved full waveform inversion procedure based on scattering angle enrichment

Zedong Wu*, Tariq Alkhalifa

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

The gradient of standard full waveform inversion (FWI) attempts to map the residuals in the data to perturbations in the model. Such perturbations include smooth background updates from the transmission components and high wavenumber updates from the reflection components. A new optimization approach is used to update the background and perturbed velocity, simultaneously. We also use a more efficient scattering angle filter to enhance the large scattering angle for the background velocity update and enhance the small scattering angle for the perturbed velocity update. This efficient implementation of the filter is fast and requires less memory. Thus, the new FWI procedure updates mainly along the wave-path for both diving and reflected waves in the initial stages. At the same time, it updates the perturbation with mainly reflections (filtering the diving waves). An application to Marmousi model shows that this method converges starting with a linearly increasing velocity, and with data free of frequencies below 4 Hz.

Original languageEnglish (US)
Title of host publication77th EAGE Conference and Exhibition 2015
Subtitle of host publicationEarth Science for Energy and Environment
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Pages4082-4086
Number of pages5
ISBN (Electronic)9781510806627
DOIs
StatePublished - Jan 1 2015
Event77th EAGE Conference and Exhibition 2015: Earth Science for Energy and Environment - Madrid, Spain
Duration: Jun 1 2015Jun 4 2015

Publication series

Name77th EAGE Conference and Exhibition 2015: Earth Science for Energy and Environment

Conference

Conference77th EAGE Conference and Exhibition 2015: Earth Science for Energy and Environment
CountrySpain
CityMadrid
Period06/1/1506/4/15

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

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