Page 9 - Acquisition and Processing of Marine Seismic Data

viii CONTENTS

9. Velocity Analysis 11.5 Reverse Time Migration 516
11.6 Poststack Migration 519
9.1 Types of Seismic Velocity 424
11.7 Prestack Migration 521
9.2 Velocity Determination From Seismic Data 426
11.8 Depth Migration 524
9.3 Velocity Analysis in Practice 436
9.4 QC in Velocity Analysis 453 11.9 3D Migration 526
11.10 Dip Moveout 529
11.11 Which Migration to Use? 532
10. Normal Moveout Correction and Stacking
11.12 QC in Migration 535
10.1 Normal Moveout Time 461
10.2 NMO Stretching 469 12. Specific Methods
10.3 Stacking 472
10.4 Specific Stacking Methods 475 12.1 f-x Prediction Filter (f-x Decon) 549
10.5 QC in NMO Correction and Stacking 486 12.2 Median Filter 553
12.3 Trace Mixing 556
12.4 Time-Variant Spectral Whitening 558
11. Seismic Migration
12.5 Instantaneous Attributes 562
11.1 Migration Concept 494 12.6 Amplitude vs. Offset 567
11.2 Kirchhoff Migration 502
11.3 Finite-Difference Migration 508 References 585
11.4 Frequency-Wavenumber (f-k) Migration 512 Index 589