DRP-317 Buff Berea Notebook Report

Notebook: 24_mwe_drp317_buffberea_raw_porosity_perm

Sources

• Dataset: Neumann, R., ANDREETA, M., Lucas-Oliveira, E. (2020, October 7). 11 Sandstones: raw, filtered and segmented data [Dataset]. Digital Porous Media Portal. https://www.doi.org/10.17612/f4h1-w124
• Experimental reference paper: Neumann, R. F., Barsi-Andreeta, M., Lucas-Oliveira, E., Barbalho, H., Trevizan, W. A., Bonagamba, T. J., & Steiner, M. B. (2021). High accuracy capillary network representation in digital rock reveals permeability scaling functions. Scientific Reports, 11, 11370. https://doi.org/10.1038/s41598-021-90090-0

Current Setup

• Raw volume: BB_2d25um_binary.raw
• ROI size: 300 x 300 x 300 voxels
• Selected ROI origin: (700, 700, 350)
• Conductance model: generic_poiseuille
• Viscosity model: tabulated water viscosity from thermo, 298.15 K
• Boundary pressures: pout = 5.0 MPa, pin = pout + 10 kPa/m * L

Key Results

Quantity	Value
Experimental porosity [%]	24.02
Full-image porosity [%]	22.71
ROI porosity [%]	22.82
Network absolute porosity [%]	23.40
Experimental permeability [mD]	275.0
Kx [mD]	390.44
Ky [mD]	314.58
Kz [mD]	206.55
Arithmetic mean permeability [mD]	303.86
Quadratic-mean permeability [mD]	313.09
Relative quadratic-mean error [%]	13.85

Interpretation

The current workflow predicts Buff Berea with a quadratic-mean permeability error of 13.85% relative to the Table 1 experimental reference. This case should be interpreted together with the cross-sample summary in DRP-317 sandstone validation overview.