Image-based modelling can be used to analyse mass transfer phenomena through porous media, with particular applications to reservoir rock pore-throats networks. The aim of these analyses is to improve our understanding and characterisation of the way fluids move through variable pore-scales.
Using real geometries from micro-CT, this project involved generating a 3D model in Simpleware software for visualisation and processing prior to meshing and export to COMSOL Multiphysics® for studying chemical transport mechanisms.
Memorial University of Newfoundland: M. Mahmoodi
RAW image files of pore space and microstructure were obtained using micro-CT data from an open-source rock CT-image library provided by The Imperial College Consortium on Pore-Scale Modelling (PERM). Simpleware ScanIP was used to threshold the data to obtain rock and pore phases, and to crop the 3D model to a suitable dimension for meshing. ScanIP’s flood fill algorithm was also used to ensure high-quality segmented images for meshing.
A very robust CFD mesh of the multiphase model was generated using Simpleware module +FE and exported directly to COMSOL for solving a Navier-Stokes equation and to calculate basic parameters such as absolute permeability. This workflow allowed for modelling of the transportation of chemical components in the real pore-level geometry.