SEG AA' Data Set

The SEG AA' data set was originally a test 2D data set shot over a selected line from the full SEG/EAGE model. It has been said (personal communication from Sam Gray) that almost any algorithm can be made to image this data set reasonably well. Here, we simply compare a one-way split step method to a more accurate full two-way method.

Figure  8(a) is the original SEG AA' velocity model. Figure  8(b) is an image of the prestack data originally shot over this model at AMOCO production before it became part of BP. Part (b) is a two-way image of this data, and is clearly better than the one-way result.



Figure 8: SEG AA' model and associate one and two-way images.

(a) The SEG AA' velocity model PIC

(b) One-way image of the AA' data PIC (c) Two-way image of the AA' data PIC


 
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