I want answer only question 5.6

5.5 Six cylindrical core plugs of 2.54 cm diameter and 3.81 cm length were taken from an Alaskan North Slope reservoir. After cleaning, porosities of all the plugs were measured by a helium porosimeter. Subsequently, all samples were fully saturated with a 0.07 22 m brine such that Sw = 1. Each sample was placed in a resistivity apparatus, and AV values were measured for a current flow of 0.01 A. Determine the formation factor F, for each core plug, and estimate parameters a and m for Archie's formation factor equation. Core Plug (Fraction) AV (V) 1 2 1.720 1.450 1.990 3 0.175 0.190 0.165 0.230 0.160 0.150 4 1.100 5 2.150 6 2.450 5.6 Sample 4 from the previous data set was flooded with crude oil, in several steps, in order to displace the brine. The remaining water saturation and AV values were measured at each of these displacement steps. Based on the measured data given in the following and other data from problem 5.5, calculate the true forma- tion resistivity R, as a function of water saturation Sw and subsequently deter- mine the saturation exponent n of the Archie's saturation equation. 5.5 Six cylindrical core plugs of 2.54 cm diameter and 3.81 cm length were taken from an Alaskan North Slope reservoir. After cleaning, porosities of all the plugs were measured by a helium porosimeter. Subsequently, all samples were fully saturated with a 0.07 22 m brine such that Sw = 1. Each sample was placed in a resistivity apparatus, and AV values were measured for a current flow of 0.01 A. Determine the formation factor F, for each core plug, and estimate parameters a and m for Archie's formation factor equation. Core Plug (Fraction) AV (V) 1 2 1.720 1.450 1.990 3 0.175 0.190 0.165 0.230 0.160 0.150 4 1.100 5 2.150 6 2.450 5.6 Sample 4 from the previous data set was flooded with crude oil, in several steps, in order to displace the brine. The remaining water saturation and AV values were measured at each of these displacement steps. Based on the measured data given in the following and other data from problem 5.5, calculate the true forma- tion resistivity R, as a function of water saturation Sw and subsequently deter- mine the saturation exponent n of the Archie's saturation equation