Reflector-preserved lithological upscaling

TitleReflector-preserved lithological upscaling
Publication TypeConference
Year of Publication2009
AuthorsFelix J. Herrmann
Conference NameSEG Technical Program Expanded Abstracts
KeywordsPresentation, SEG

By combining Percolation models with lithological smoothing, we arrive at method for upscaling rock elastic constants that preserves reflections. In this approach, the Percolation model predicts sharp onsets in the elastic moduli of sand-shale mixtures when the shales reach a critical volume fraction. At that point, the shale inclusions form a connected cluster, and the macroscopic rock properties change with the power-law growth of the cluster. This switch-like nonlinearity preserves singularities, and hence reflections, even if no sharp transition exists in the lithology or if they are smoothed out using standard upscaling procedures.

Citation Keyherrmann2009SEGrpl