Multiparameter acoustic inversion for variable-tilt transversely isotropic media with generalized Radon transform

Wei Ouyang, Quan Liang, Weijian Mao, Shijun Cheng

Research output: Contribution to journalArticlepeer-review

Abstract

The pseudoacoustic approximations are commonly used for migration and inversion in transversely isotropic (TI) media, as they accurately characterize the P-wave propagation and are simpler than their elastic counterparts, resulting in computational savings. This paper is devoted to presenting an approach for generalized Radon transform (GRT) migration and inversion in acoustic TI media with a tilted symmetry axis (TTI). In parameterizing an acoustic TTI medium with the P-wave normal moveout velocity (NMO) vn , Thomsen’s parameter δ, and anelliptic parameter η, a concise single-scattering integral for NMO pressure is obtained by perturbing the TTI medium from a background non-elliptically anisotropic medium. It results in explicitly representing the perturbation scattering patterns of each parameter ( vn , δ, η), helping us understand the scattering angular influence of the perturbed parameters. The application of GRT on this scattering integral allows a direct construction of the acoustic TTI inversion operator. Numerical examples verify the effectiveness of the proposed acoustic TTI GRT inversion method and show its considerably good performance in the presence of steeply dipping anisotropic layering.
Original languageEnglish (US)
Pages (from-to)1-1
Number of pages1
JournalIEEE Transactions on Geoscience and Remote Sensing
DOIs
StatePublished - May 11 2023

Bibliographical note

KAUST Repository Item: Exported on 2023-05-18
Acknowledgements: The work was supported in part by the National Natural Science Foundation of China under Grant 42130808, in part by the the CNPC (China National Petroleum Corporation) Scientific Research and Technology Development Project under Grant 2021DJ0506, in part by the National Science Foundation of China under Grant 41974163. The authors would like to thank BP for making the 2007 2-D TTI velocity benchmark data set and model available.

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • General Earth and Planetary Sciences

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