Attenuation analysis can provide valuable information about lithology, presence of fluids, and physical properties of subsurface rocks and fluids. In addition, other properties such as permeability, mobility of fluids, and fluid saturation, that cannot be inferred from velocity or amplitude-variation-with-offset (AVO) analysis, could possibly be extracted from attenuation analysis. Despite the many potential benefits of attenuation analysis, it has yet to become part of routine reservoir characterization primarily because of two reasons: first, challenges involved in its estimation from reflection seismic data, and second, understanding of the physical mechanisms and the relation to rock properties.

Since estimating interval attenuation from...

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