What is it about?
We have developed a method for nonlinear joint prestack inversion using the exact Zoeppritz equations.
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Why is it important?
The Zoeppritz equations describe the relationship between seismic properties that are useful for the interpretation of lithology and fluid properties. Various approximations to the Zoeppritz equations are often used in linear amplitude variation with offset and amplitude variation with angle inversions, assuming low-contrast boundaries. These approximations restrict the inversion method to not-too-large-angle cases and reduce the inversion accuracy.
Perspectives
We found that the nonlinear joint prestack inversion achieved more accurate results than the linear joint prestack inversion, regardless of incidence angle size. Furthermore, if the prestack data were of high enough quality, it was possible to identify thin layers from the inversion result.
Jun Lu
China University of Geosciences Beijing
Read the Original
This page is a summary of: Joint PP and PS AVA seismic inversion using exact Zoeppritz equations, Geophysics, September 2015, Society of Exploration Geophysicists,
DOI: 10.1190/geo2014-0490.1.
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