ABSTRACT:

We compare different algorithms and boundary conditions for Digital Rock Physics modeling. We report results of Simpleware, Comsol and NIST for elasticity and electrical conductivity and Simpleware and Lattice-Boltzmann for permeability. Overall there is good consistency, though there are sample-to-sample differences. The comparison shows a good agreement between Simpleware and Comsol with a difference of ˜1% for effective elastic properties, ˜1-3% for permeability and 5% for effective conductivity. The Simpleware Physics Modules allow a streamlined workflow to compute effective properties and is especially suitable for processing a large number of digital samples. Comsol Multiphysics on the other hand allows more multiphysics coupling and access to internal field variables useful for research purposes. The NIST codes for elasticity and electrical conductivity are very efficient but are specifically only for those two physical properties.

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