The data is the segmented images for each fraction flow analyzed in paper:
Lin, Q., Bijeljic, B., Berg, S., Pini, R., Blunt, M.J., Krevor, S., 2019. Minimal surfaces in porous media: Pore-scale imaging of multiphase flow in an altered-wettability Bentheimer sandstone. Phys. Rev. E 99, 063105. doi:10.1103/PhysRevE.99.063105
To calculate the saturation Sw, the total porosity of the sample including sub-resolution porosity (occupoed with brine phase) needs to be used. The total porosity of the sample phi_tot = 0.231.
To obtain brine saturation (Sw) for each fractional flow, please extract oil phase from and compute the fraction (frac_oil), and use the following formula:
Sw = (phi_tot-frac_oil)/phi_tot
Data information:
data_size: 1600 1600 3000
data_type: uint8
Voxel size: 3.58um
Label values
1: oil phase
2: brine phase
3: rock grain phase