Sonic Log Porosity
INPUTS
Common travel times
(micro-sec/ft)
Sandstone: 55.6
Limestone: 47.5
Dolomite: 43.5
Drilling mud: 189
(X3.28 for micro-sec/m)
Depth =
Zone travel time =
Matrix travel time =
Fluid travel time =
SHALE CORR
No correction
Shale correction
Old rocks
Tertiary rocks
Compacted
Uncompacted
Shale travel time =
Gamma-ray in clean zone =
Gamma-ray in shale =
Gamma-ray in zone of interest =
RESULTS
Gamma-ray index =
Volume% of shale =
%Sonic log porosity =
RECORDING:
Depth,Zone TT,Matrix TT,Fluid TT,Shale Corr,Rock type,Compaction,Shale TT,GR clean,GR shale,GR zone,GR index,Vol% Shale,Porosity%
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.