Application of the Pulse Decay Technique

In recent years the pulse decay technique became a frequent tool for the fast and convenient measurement of permeability and porosity of mostly tight rocks. The method is superior to conventional steady state methods as it is much faster and easier to perform. So far it was applied to linear cores (plugs) only. In the last years radial models appeared widely as they show some advantages over linear models, so the need emerged to apply the method for radial cores. Experimental apparatus and mathematical models have been developed to solve the problem. The current paper describes experimental set-up, analytical solutions of the governing equation and applications of them to performed measurements.