total_porosity.raw is the segmented image for the entire porosity (phi_tot), including subresolution pores. This porosity needs to be used to calibrate brine saturation (micro porosity will contain brine in water wet systems). fw*.raw are the segmented images to compute curvature. To obtain brine saturation (Sw) for each fractional flow, please extract oil phase from fw*.raw images, compute the fraction (frac_oil), and use the following formula: Sw = (phi_tot-frac_oil)/phi_tot Data information: data_size: 1000 1000 1000 data_type: uint8 Voxel size: 3.578 um phase values for fw*.raw 1: oil phase 2: brine phase 3: rock grain phase phase values for total_porosity.raw 1: macro pores 2. micro_porosity (average porosity = 0.32) 3. Rock grain