Sonic Porosity

WTA v/v

HRG v/v


From a measured formation slowness (P-wave), the app computes sonic porosity using two functions.
a) Wylie Time Average (linear in slowness) b) Hunt-Raymer-Gardner (linear in velocity)

  1. Input the measured formation slowness.
  2. Input the known matrix and borehole fluid slowness
Reference 1: Schlumberger Log Interpretation Charts, Porosity Evaluation from Sonic, Por-3
Reference 2: Virtual Petrophysics "Petrophysical Properties of Common Minerals"