DRP-317 Berea Notebook Report¶
Notebook: 18_mwe_drp317_berea_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:
Berea_2d25um_binary.raw - ROI size:
256 x 256 x 256voxels - Selected ROI origin:
(0, 744, 0) - 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 [%] | 18.96 |
| Full-image porosity [%] | 21.67 |
| ROI porosity [%] | 21.32 |
| Network absolute porosity [%] | 21.82 |
| Experimental permeability [mD] | 121.0 |
| Kx [mD] | 144.91 |
| Ky [mD] | 134.71 |
| Kz [mD] | 140.13 |
| Arithmetic mean permeability [mD] | 139.92 |
| Quadratic-mean permeability [mD] | 139.98 |
| Relative quadratic-mean error [%] | 15.69 |
Interpretation¶
Berea is currently the closest of the three DRP-317 rocks. The permeability is still high, but the overshoot is moderate compared with the previous centered-ROI baseline and with the other two sandstone cases.
The remaining gap is aligned with the porosity bias: both the full image and the selected ROI are more porous than the experimental reference, and the extracted network remains more conductive than the measured rock response.