Abstract
A reliable and clear depth image requires accurate near-surface velocity information. Such valuable data are usually expensive to obtain from an uphole program. Here, we show that a fairly accurate model of the shallow subsurface can be obtained from high-resolution seismic data. Using conventional velocity analysis and tomographic inversion, we build a near-surface model for a real-data example. The near-surface model results in a better near-surface correction than what is obtained using conventional refraction-based static methods. The accuracy of the model is confirmed by a comparison with uphole data and the stack quality using the model.
Original language | English (US) |
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Title of host publication | Society of Exploration Geophysicists - 77th SEG International Exposition and Annual Meeting, SEG 2007 |
Publisher | Society of Exploration [email protected] |
Pages | 1108-1112 |
Number of pages | 5 |
ISBN (Print) | 9781604238976 |
State | Published - Jan 1 2007 |
Externally published | Yes |