Regensburg 2007 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 30: Poster II
DY 30.4: Poster
Thursday, March 29, 2007, 16:00–18:00, Poster D
Pore scale model for carbonate rocks — •Bibudhananda Biswal1, Paul-Eric Oren2, Rudolf Held3, Stig Bakke2, and Rudolf Hilfer1 — 1ICP, Universitaet Stuttgart, Pfaffenwaldring 27, 70569 Stuttgart, Germany — 2Numerical Rocks AS, N-7041 Trondheim, Norway — 3Statoil ASA, N-7005 Trondheim, Norway
A stochastic geometrical model for the diagenesis of carbonate rocks is proposed. It incorporates many crucial features of real carbonates: correlations with the primordial depositional textures, scale dependent intergranular porosity over many decades, vuggy porosity, a percolating pore space, a fully connected matrix space, strong dependence on the process of discretization and wide variability in the permeabilities etc. The continuum representation allows discretization of the microstructure at arbitrary resolutions. Pore scale geometries of two generic carbonate textures are successfully reconstructed using this model. Petrophysical parameters are measured on the discretized samples and compared with real samples. The model can be easily adapted to reconstruct the pore scale of a wide variety of carbonate rocks.