Formation resistivity
R_t is defined by mineralization of the rock matrix and saturating fluids which depend on water-saturated shaliness
V_{sh} , formation porosity
\phi_e and water saturation volumetric share
s_w.
| Archie Model |
| Indonesia Model (Poupon-Leveaux) |
| Simandeux Model |
| Dual-Water Model (DW) |
| Waxman-Smits-Thomas Model (WST) |