Porosity Inferred from Acoustic Velocity

For many applications it is advantageous to relate permeability to porosity.  Measuring porosity directly on a slabbed core is not feasible, however, there are well established correlations between acoustic wave velocities (P and S wave) and porosity.  NER offers an optional acoustic assembly as a replaceable probe for the system.   Compressional and shear waves are measured as a function of position along the core.  These data are then processed using correlations between porosity and velocity to provide estimation of porosity.  In addition to using standard correlations, site specific relations between velocity and porosity may be employed to enhance the accuracy of the porosity estimate.

The acquisition and reduction of the velocity data is completely automated.  NER's extensive experience in acoustic measurements and automated processing permits an extremely reliable turn key operation.

Probe Permeameter Specifications