DRP-317 Parker Notebook Report¶
Notebook: 28_mwe_drp317_parker_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:
Parker_2d25um_binary.raw - ROI size:
(300, 300, 300)voxels - Selected ROI origin:
(700, 350, 0) - ROI porosity:
13.68% - Extraction backends:
porespy,prego,native_maximal_ball - 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 [%] | 14.77 |
| Full-image porosity [%] | 13.65 |
| ROI porosity [%] | 13.68 |
| Experimental permeability [mD] | 10.0 |
| Backend | Network phi [%] | Kx [mD] | Ky [mD] | Kz [mD] | RMS K [mD] | Rel. K error [%] | Np | Nt |
|---|---|---|---|---|---|---|---|---|
| PoreSpy snow2 | 12.90 | 20.51 | 18.17 | 22.40 | 20.43 | 104.32 | 3454 | 5647 |
| PREGO | 12.57 | 42.06 | 40.96 | 52.90 | 45.62 | 356.24 | 2022 | 4147 |
| Native maximal-ball | 12.57 | 7.99 | 7.76 | 10.37 | 8.79 | -12.14 | 1975 | 3133 |
Network Statistics Snapshot¶
| Backend | Mean coordination | Dead-end pore fraction |
|---|---|---|
| PoreSpy snow2 | 3.27 | 0.290 |
| PREGO | 4.10 | 0.116 |
| Native maximal-ball | 3.17 | 0.270 |
Interpretation¶
For Parker, the closest aggregate permeability in this rerun is
from Native maximal-ball with a relative permeability error of
-12.14%. The spread between the
largest and smallest backend aggregate permeability is about 5.19x,
which makes extraction sensitivity a material part of this sample's validation
result.
This is a pore-network comparison against a laboratory-scale experimental reference. The numbers depend on the selected ROI, segmentation convention, boundary labeling, network reduction, and conductance closure; they should not be read as a direct voxel-scale flow simulation.