Brittleness, porosity, and total organic carbon estimation from elastic attributes in Eagle Ford Shale through the application of the multiattribute rotation scheme

Abstract

This paper presents a workflow to estimate brittleness, porosity, and total organic carbon from elastic attributes. The estimation is carried out through the application of the multi-attribute rotation scheme. This method is a hybrid rock-physics/statistical approach that uses a global search algorithm to estimate a customized transform for each geologic setting in order to predict petrophysical properties from elastic attributes. After the application of this technique, customized transforms were derived for the analyzed geological setting, to estimate porosity, brittleness, total organic carbon and litho facies logs from elastic attributes. The final goal of this workflow is to apply these transforms over seismically-derived attributes to generate volumes of these petrophysical properties that can be used for reservoir characterization and production optimization.