Water Saturation  Ratio Method


INPUTS 

Depth =

Total depth =

Avg surface temp =

Bottomhole temp =

Mud resistivity, Rm =

Rm measuring temp =

Flushed zone resistivity, Rxo (ohmmeters) =

Formation water resistivity (ohms), Rw =

Deep Resistivity (ohm*meters), Rt =

Define optional porosity model:
a =
m =

INPUT RMF? 

Resistivity of mud filtrate, Rmf =

Rmf measuring temperature =


RESULTS 
Temperature gradient =
per 100 depth units

Formation temperature =

Corrected Rm =

Corrected Rmf =

Water Saturation, %Sw =

Porosity% from Archie model (limestone: a=1, m=2) =

Porosity% from Humble model (sandstone: a=.62, m=2.15) =

Porosity% from optional model =

