Publication History: This article is based on "Crain's Seismic Petrophysics" by E. R. (Ross) Crain, P.Eng., first published in 2003, and updated annually until 2016. This webpage version is the copyrighted intellectual property of the author.

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Amplitude Versus Offset Case History
An AVO model and case history is shown below for a Cretaceous Glauconitic channel sand. It shows how easily AVO can be used to identify different geological scenarios.

AVO models (wet, gas, shale) and real data                                                            

AVO models (oil, gas, shale) and real data

AVO model, seismic section, and final interpretation map

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