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The next step in the process is to determine the Clean Formation Water Saturation (Archie Sw)

The equation is:

Sw = (0.81*Rw/ILD)/PHIE

where

Rw = 0.058 ohm-m

Using the eaquation above and the calculator provided here, determine the Archie Sw for the depths below:

 
DEPTH
PHIE ILD
A
11305
.009 2.11
B
11333
.169 24.36
C
11367
.141 10.79
D
11381
.091 6.24