Six cylindrical core plugs of 2.54cm diameter and 3.81cm length were taken from an Alaskan North Slope reservoir. After cleaning porosities of all plugs were measured by a helium porosimeter. Subsequently, all samples were fully saturated with a 0.07m brine such that, Sw=1. Each sample was placed in a resistivity apparatus and V values were measured for current flow of 0.01A. determine the formation factor F, for each core plug and estimate parameters a and m for archie's formulation factor equation