Prestack Depth Migration by a Parallel  3D PSPI

Jang, Seonghyung; Kim, Taeyoun

doi:10.4236/ijg.2016.77067

Cited by 1 publication

(2 citation statements)

References 12 publications

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“…Direct comparison shows that the 3D FMD result is superior with respect to resolution and accuracy. The image obtained by Jang and Kim (2016) demonstrates the difficulties when going from 2D to 3D using Fourier techniques; in particular, the issue of spatial aliasing is a main challenge.  Li et al (2015) introduces 3D weak-dispersion RTM using a so-called Stereo-Modeling Operator.…”

Section: D Isotropic Seg/eage Modelmentioning

confidence: 99%

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3D Prestack Fourier Mixed-Domain (FMD) depth migration for VTI media with large lateral contrasts

Zhao

Gelius

Tygel

et al. 2019

Journal of Applied Geophysics

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Although many 3D One-Way Wave-equation Migration (OWEM) methods exist for VTI media, most of them struggle either with the stability, the anisotropic noise or the computational cost. In this paper we present a new method based on a mixed space-and wavenumber-propagator that overcome these issues very effectively as demonstrated by the examples. The pioneering methods of phase-shift (PS) and Stolt migration in the frequency-wavenumber domain designed for laterally homogeneous media have been followed by several extensions for laterally inhomogeneous media. Referred many times to as phase-screen or generalized phase-screen methods, such extensions include as main examples of the Split-step Fourier (SSF) and the phaseshift plus interpolation (PSPI). To further refine such phase-screen techniques, we introduce a higher-order extension to SSF valid for a 3D VTI medium with large lateral contrasts in vertical velocity and anisotropy parameters. The method is denoted Fourier Mixed-Domain (FMD) prestack depth migration and can be regarded as a stable explicit algorithm. The FMD technique was tested using the 3D SEG/EAGE salt model and the 2D anisotropic Hess model with good results. Finally, FMD was applied with success to a 3D field data set from the Barents Sea including anisotropy. Journal of Applied Geophysics

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Section: D Isotropic Seg/eage Modelmentioning

confidence: 99%

“…Jang and Kim (2016) gave examples of the implementation under the use of Parallel 3D PSPI migration. The cited work is one of the latest articles of a 3D screen-propagator technique employed to the 3D SEG/EAGE salt model.…”

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confidence: 99%