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Numerical homogenization approach for coupling of chemical and mechanical processes in the geological subsurface

Wetzel, M., Kempka, T., Kühn, M. (2017): Numerical homogenization approach for coupling of chemical and mechanical processes in the geological subsurface - Abstracts and papers, The 15th International Conference of the International Association for Computer Methods and Advances in Geomechanics (IACMAG) (Wuhan, China 2017).



http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:3152909
Authors
http://gfzpublic.gfz-potsdam.de/cone/persons/resource/langer

Wetzel ,  M.
3.4 Fluid Systems Modelling, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

http://gfzpublic.gfz-potsdam.de/cone/persons/resource/kempka

Kempka ,  T.
3.4 Fluid Systems Modelling, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

http://gfzpublic.gfz-potsdam.de/cone/persons/resource/mkuehn

Kühn ,  M.
3.4 Fluid Systems Modelling, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Abstract
Predicting macroscopic mechanical behaviour of rocks based on their microstructure can be a powerful tool for coupling chemo-mechanical interactions in subsurface process simulations and upscaling elastic rock properties to reservoir-scale. We applied a 3D numerical homogenization model to determine Young’s modulus based on rocks’ microstructure and mineralogical composition. The presented approach was successfully validated against the analytical Mori-Tanaka model and further provides significant benefits. For instance, considering a range of microstructures affects the determined Young’s modulus up to 26 % and 230 % for quartz and a clay matrix, respectively. Matching against experimental