A Practical Understanding of Pre- and Poststack Migrations: PrestackThis volume is designed to give the practicing geophysicist an understanding of the principles of prestack migration, presented with intuitive reasoning that avoids difficult math. Modeling with common-shot record and a constant-offset section are used to introduce prestack migration. New material in this revised edition of the original 1998 book includes algorithms that lead to and include Claerbout's inversion method. |
Contents
5 | 7-64 |
6 | 7-70 |
7 | 8-80 |
Migration | 9-8 |
6 | 9-15 |
7 | 9-41 |
8 | 9-48 |
9 | 9-54 |
1 | 10-2 |
32 | 10-32 |
44 | 10-44 |
Equivalent Offset Migration EOM | 11-11 |
48 | 11-48 |
Comparisons and Evaluations | 12-2 |
Stacking Chart for | 12-23 |
References Full ID number sort | 17 |
Common terms and phrases
3-D prestack algorithm aliasing amplitude anisotropic Bancroft Cheops pyramid Claerbout computed constant offset section constant velocity Conv conventional CREWES Research Report CSP gather defined diffraction dip filter dip moveout dipping event DMO ellipse DMO'd domain downward continuation EAEG Tech Eikonal equation equivalent offset Exploration Geophysics Fourier transform GDMO GDMO-PSI geometry Geophys hyperbolic hyperboloid illustrated in Figure imaging condition input sample input trace inversion Kirchhoff migration Leading Edge media Geophysics method migrated trace migration Exp migration Geophysics MO correction poststack migration prestack depth migration prestack migration ellipse prestack migration gather prestack time migration prestack volume Prosp Radon transform ray tracing raypaths reflection point RMS velocities scatterpoint SEG Nat seismic data source and receiver source gather source record stacking velocities statics surface velocity analysis velocity model vertical wave equation wavefield wavefront zero zero-offset