Berlin 2008 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 29: Poster II

DY 29.59: Poster

Donnerstag, 28. Februar 2008, 16:00–18:00, Poster C

Synthetic microcomputertomography of a laboratory scale sandstone core with authigenic clay — •Bibudhananda Biswal¹ and Rudolf Hilfer^1,2 — ¹ICP, Universität Stuttgart, Pfaffenwaldring 27, 70569 Stuttgart, Germany — ²Institut für Physik, Universität Mainz, 55099 Mainz, Germany

A continuum geometrical modeling technique for reconstructing three dimensional pore scale microstructure of multiscale porous media [1] is extended to generate the first laboratory scale computer model of a sandstone with chlorite cementation, quartz overgrowth and kaolinite pore fillings. The core plug, 2.5 cm in diameter and 2.5 cm long, contains roughly 10¹¹ crystallites with sizes varying from roughly 1 mm down to 100 nm. The continuum representation of the pore scale geometry allows discretization at arbitrary resolutions and makes available, for the first time, truly multiscale synthetic µ-CT images for flow simulation. The method can be used to reconstruct pore scale microstructure of a large variety of clay textured sandstone morphologies.

[1] B. Biswal et al., Phys. Rev. E, 75, 61303 (2007)