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Sommerfeld Integral Based Spherical Wave Field Computations beyond Two Layers and a Three-layer AVO Example
71st EAGE Conference and Exhibition incorporating SPE EUROPEC 2009
Plane-wave theory is the commonly accepted approach to AVO-analysis/inversion but it is known to break down near critical angles and at large offsets. What is more, commonly employed linear approximations to Zoeppritz's equations make the assumption of small parameter changes across the interface. Large offsets are desirable, however, when estimating densities by AVO-inversion. Spherical-wave theory overcomes offset related and small parameter change problems, but does not account fordoi:10.3997/2214-4609.201400279 fatcat:e7rsro77y5dadl35ip64lnicxi