Introduction
Seismic Modeling
History
Zero Offset Migration Algorithms
Exploding Reflector Examples
Prestack Migration
Prestack Migration Examples
Data Acquisition
Migration Summary
Isotropic Velocity Analysis
Anisotropic Velocity Analysis
Case Studies
Course Summary
 

Chapter 7
Prestack Migration Examples

This chapter is devoted to assessing the quality and usability of a wide variety of prestack imaging algorithms. Visual side-by-side comparisons provide ample empirical evidence to conclude that the more accurate the algorithm, the wider the aperture, and the more careful the application, the better the result. Ultimately, we will argue that the full two-way method is by far the best at providing optimum imaging. When computational expense is not an issue, this should definitely be the method of choice.

The images in this chapter are self-explanatory and require little or no real attention to visual detail. Because they are so small, it is better to see them on the screen.

  Common Azimuth on the SEG/EAGE C3-NA Synthetic
  Kirchhoff versus One-Way on a Gulf of Mexico 2D Salt Synthetic
  A North Sea Sill Synthetic
  Marmousi Case Study
  An Imaging Note and the BP 2.5 Dimensional Data
  BP 2.5 D Data
  BP 2004 Salt Structure Data
  SEG AA' Data Set
  Migration from Topography
  The SMAART JV Sigsbee Model
  SMAART JV Pluto Data Set
  SEG/EAGE C3-NA Data Imaging
  Anisotropic Earth Models