Table 5. Analysis of Relative Error between Predicted and Experimental Results of Permeability Model.
| confining pressure (MPa) | P (MPa) | (k/k0) predicted | (k/k0) tested | δ (%) | δ̅ (%) |
|---|---|---|---|---|---|
| 8 | 6.25 | 1 | 1 | 0 | 1.99 |
| 5.25 | 0.949 | 0.958 | 0.95 | ||
| 4.25 | 0.894 | 0.902 | 0.84 | ||
| 3.25 | 0.867 | 0.902 | 3.90 | ||
| 2.25 | 0.911 | 0.907 | 0.50 | ||
| 1.25 | 1.137 | 1.096 | 3.75 | ||
| 12 | 6.25 | 1 | 1 | 0 | 2.42 |
| 5.25 | 0.940 | 0.962 | 2.24 | ||
| 4.25 | 0.878 | 0.894 | 1.83 | ||
| 3.25 | 0.848 | 0.874 | 3.02 | ||
| 2.25 | 0.885 | 0.898 | 1.47 | ||
| 1.25 | 1.082 | 1.045 | 3.53 | ||
| 16 | 6.25 | 1 | 1 | 0 | 1.91 |
| 5.25 | 0.936 | 0.951 | 1.58 | ||
| 4.25 | 0.869 | 0.861 | 0.96 | ||
| 3.25 | 0.830 | 0.852 | 2.61 | ||
| 2.25 | 0.870 | 0.856 | 1.69 | ||
| 1.25 | 1.039 | 1.012 | 2.69 | ||
| 20 | 6.25 | 1 | 1 | 0 | 5.24 |
| 5.25 | 0.932 | 0.948 | 1.73 | ||
| 4.25 | 0.859 | 0.880 | 2.42 | ||
| 3.25 | 0.813 | 0.873 | 6.82 | ||
| 2.25 | 0.858 | 0.946 | 9.33 | ||
| 1.25 | 1.013 | 1.076 | 5.88 |
a
δ is relative error, %; δ̅, is the mean relative error, %.