• journal_title：Geophysics
• Contributor：Junru Jiao ; David R. Lowrey ; John F. Willis ; Ruben D. Martínez
• Publisher：Society of Exploration Geophysicists
• Date：2008-
• Format：text/html
• Language：en
• Identifier：10.1190/1.2969084
• journal_abbrev：Geophysics
• issn：0016-8033
• volume：73
• issue：5
• firstpage：VE183
• section：VELOCITY MODEL BUILDING

Imaging sediments below salt bodies is challenging because of the inherent difficulty of estimating accurate velocity models. These models can be estimated in a variety of ways with varying degrees of expense and effectiveness. Two methods are commercially viable trade-offs. In the first method, residual-moveout analysis is performed in a layer-stripping mode. The models produced with this method can be used as a first approximation of the subsalt velocity field. A wave-equation migration scanning technique is more suitable for fine-tuning the velocity model below the salt. Both methods can be run as part of a sophisticated interactive velocity interpretation software package that makes velocity interpretation efficient. Performance of these methods has been tested on synthetic and field data examples.