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oa Interval Velocity Analysis in Complex Areas – What About the Azimuth?
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, EAGE Workshop on Marine Seismic - Focus on Middle East and North Africa, Feb 2009, cp-119-00032
- ISBN: 978-94-6282-068-5
Abstract
Three dimensional interval velocity analysis must deal with the problem of lateral velocity variations along different azimuths. Traditionally, when this azimuth dependency is treated, the analysis refers to the acquisition azimuth. The main idea presented in this study is that in complex geological regions, the acquisition azimuth may not be the optimal domain for analyzing velocity errors. We suggest here to define the azimuth in the image domain. Together with the scattering angle and dip, all parameterized in the depth image domain, accurate CIG analysis method can be designed.