PPT Slide
Shaly Sand Models for Sw Calculation -- Sw model menu permit selection of Archie water saturation model (the default) and two shaly sand models, the Simandoux model and the dual-water model.
Hough Transform -- The Hough transform is used for simultaneous solution of Archie equation constants and formation water resistivity.
Secondary Porosity -- Secondary porosity is calculated as the difference between the total porosity (from density or neutron porosity) minus sonic porosity.
Expanded log analysis in PfEFFER 2.0