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Ray-Based Approaches to 3D VSP Modelling for Survey Planning and Interpretation
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Second EAGE Workshop on Borehole Geophysics, Apr 2013, cp-343-00039
- ISBN: 978-90-73834-46-0
Abstract
Advanced seismic modelling is the key to survey evaluation and design. Two different but complementary ray-based methods are presented: (1) the classic ray-tracing approach with a focus on illumination mapping and attribute filtering, and (2) simulation of depth migrated seismic images of the reservoir as based on illumination vectors. Combining these methods, shot and receiver positions can be optimized, fold and amplitude at target level can be verified, both lateral and vertical resolution can be estimated, and final seismic (depth migrated) images can be simulated and compared for a given survey setup and various overburden properties. Examples are shown for a 3D VSP case and an ocean bottom cable reference case.