Old Electric Log Technique
INPUTS Assumptions:
- Short normal curve reads in the invaded zone
- Long normal curve reads beyond it.
Depth =
Long normal curve resitivity =
Short normal curve resistivity =
Formation water resistivity, Rw =
Define optional
porosity model:
a =
m =
RESULTS 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 =


When you finish your calculations,
select the recorded data, copy it,
and then paste it into a spreadsheet
as comma-delimited values to save it.