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Paul Constantin Sava
Migration and velocity analysis
by wavefield extrapolation
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Introduction
Motivation
Seismic depth imaging
Migration
Velocity estimation
Thesis overview and contributions
Riemannian wavefield extrapolation
Overview
Introduction
Acoustic wave-equation
One-way wave-equation
Mixed-domain solutions to the one-way wave-equation
Finite-difference solutions to the one-way wave equation
Examples
Discussion
Conclusions
Acknowledgment
Angle-domain common image gathers
Overview
Introduction
Angle gathers in the image-space
Regularization of the angle-domain
Examples
Discussion
Conclusions
Acknowledgment
Prestack residual migration
Overview
Introduction
Stolt migration
Prestack Stolt residual migration
Common-azimuth Stolt residual migration
Examples
Discussion
Conclusions
Acknowledgment
Wave-equation migration velocity analysis
Overview
Introduction
Recursive wavefield extrapolation
WEMVA objective function
WEMVA operator
Cycle skipping in image perturbations
Linearized image perturbations
WEMVA sensitivity kernels
Fréchet derivative integral kernels
Sensitivity kernels examples
WEMVA cost
Conclusions
Acknowledgment
Examples
Simple WEMVA example
Subsalt WEMVA examples
Sigsbee 2A synthetic model
2D field data example
Normal incidence WEMVA
3D field data example
Diffraction-focusing WEMVA example
Delineation of rough salt bodies
Imaging of GPR data
Discussion
Conclusions
Acknowledgment
Conclusions
Riemannian wavefield extrapolation
2D point-source ray coordinates
2D finite-difference solution to the
equation
Angle-domain common image gathers
Reflection angle formula
Wave-equation migration velocity analysis
First-order Born scattering operators
Linearized image perturbations
REFERENCES
About this document ...
Stanford Exploration Project
11/4/2004