Water Saturation - Archie Method
INPUTS Depth = MODELS:
Archie: (limestone) a=1, m=2, n=2
Humble: (sandstone) a=0.62, m=2.15, n=2
Mod. Humble: (sandstone) a=0.82, m=2, n=2
a = m =
n = Porosity% =
Rw = Rt =
SHALE CORR
Gamma-ray, clean =
Gamma-ray, shale =
Gamma-ray of zone =
Shale resistivity =
RESULTS Gamma-ray index =
Volume% of shale =
Water Saturation% =
Formation Factor =
Apparent Water Resistivity, Rwa =
Is Rwa > (3*Rw)?
Rwa>3*Rw can indicate production
Bulk Volume Water%, BVW% =
For water-free production, BVW<7% for SS, BVW<4% for LS

Recording:



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.