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Subsalt Velocity Analysis by Combining Wave Equation Based Redatuming and Kirchhoff Based Migration Velocity Analysis
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 69th EAGE Conference and Exhibition incorporating SPE EUROPEC 2007, Jun 2007, cp-27-00087
- ISBN: 978-90-73781-54-2
Abstract
C003 Subsalt Velocity Analysis by Combining Wave Equation Based Redatuming and Kirchhoff Based Migration Velocity Analysis B. Wang* (CGGVeritas) F. Audebert (CGGVeritas) V. Dirks (CGGVeritas) J. Liu (CGGVeritas) & P. Zhang (CGGVeritas) SUMMARY Due to the geometrical complexity of the typical Gulf of Mexico (GOM) velocity models with embedded salt bodies of any shapes wave equation migration is used preferentially over Kirchhoff methods for subsalt velocity model building. This preference is based on the ability of wave-equation based migrations to overcome the need for tracing complex ray paths through the salt bodies and for a better handling of multi-path arrivals