The geometry of the Bentheimer sandstone is from Herring et al., 2016, where the original data size is 1920*1920*1200 with a voxel resolution of 3.182 micron. A subdomain is cropped from the original data (porosity: 0.19), resulting in a simulation grid of 720*720*900 with a grid resolution of 3.182 micron.
Herring, Anna L., Linnéa Andersson, and Dorthe Wildenschild. "Enhancing residual trapping of supercritical CO2 via cyclic injections." Geophysical Research Letters 43, no. 18 (2016): 9677-9685.