| IPR type | Reservoir pressure/psia | Reservoir temp/˚f | Wellbore radius/in | Reservoir radius/Ft | Reservoir thickness/Ft | Reservoir skin | Turbulence factor/(1・bpd−1) | Horizontal tunnel length/Ft | Avg. vertical perm/mD | Avg. horizontal perm/mD |
| Giger et al. (1985) | 2900 | 165 | 5 | 1000 | 21 | 0 | 0 | 2000 | 1 | 5 |