A parameterization study for elastic VTI Full Waveform Inversion of hydrophone components: synthetic and North Sea field data examples

Antoine Guitton, Tariq Ali Alkhalifah

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Choosing the right parameterization to describe a transversely isotropic medium with a vertical symmetry axis (VTI) allows us to match the scattering potential of these parameters to the available data in a way that avoids potential tradeoff and focus on the parameters to which the data are sensitive. For 2-D elastic full waveform inversion in VTI media of pressure components and for data with a reasonable range of offsets (as with those found in conventional streamer data acquisition systems), assuming that we have a kinematically accurate NMO velocity (vnmo) and anellipticity parameter η (or horizontal velocity, vh) obtained from tomographic methods, a parameterization in terms of horizontal velocity vh, η and ε is preferred to the more conventional parameterization in terms of vh, δ and ε. In the vh, η, ε parameterization and for reasonable scattering angles (
Original languageEnglish (US)
Pages (from-to)R299-R308
Number of pages1
JournalGEOPHYSICS
Volume82
Issue number6
DOIs
StatePublished - Oct 6 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors would like to thank the sponsors of the Center forWave Phenomena as well as KAUST for their financial support. We would also like to thank Marianne Houbiers at Statoil for help and feedback with the North Sea dataset. We would like to thank Statoil ASA and the Volve license partners ExxonMobil E&P Norway AS and Bayerngas Norge AS, for the release of the Volve data. The views expressed in this paper are the views of the authors and do not necessarily reflect the views of Statoil ASA and the Volve field license partners. Finally, we thank the Associate Editor Kris Innanen and reviewers for their valuable comments.

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