GAS PERMEABILITY MEASUREMENT

   

Our company is equipped with a Coreval-700 fully automated permeameter and porosimeter that is suitable for measuring the porosity and permeability of the samples by gas (helium/nitrogen) at max. 700 bar confining pressure on 1” or 1.5” diameter and max. 3” length core plugs.  The instrument is provided with a data acquisition and calculation computer station. Permeability measurements are based on the unsteady state pressure drop (pressure falloff) method. This data is used to determine the equivalent liquid permeability, slip and turbulence factors. Equivalent air permeability at a user specified pressure is also computed. Porosity and pore volume measurements are made using the Boyle’s and Charles’ law technique. Besides the compressibility, the fracture volume and the real pore volume can also be computed.