Permeability as function rock mechanical behaviourReport as inadecuate

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Nafta : exploration, production, processing, petrochemistry, Vol.63 No.3-4 April 2012. -

Effect of pressure on permeability is analyzed using phenomenological models. Analytical algorithms which compose a coherence unit, are presented to estimate the rock permeability, consequently the well capacity in case of rigid incompressible, elastic, elastic-viscous, elastic-plastic and elastic - plastic - viscous rocks. The algorithms can be used for estimation of porosity-pressure functions also. An example is presented to show the application of the recommended methods. Without understanding the effect of stress on the permeability in case of low permeability and porosity reservoirs, the well production can not be predicted. The analysis proves that the research has to continue for HT and HP reservoirs to reveal the relation between rock parameters and pressure temperature load for rocks having complex mechanical behaviour.

permeability; porosity; analytical algorithms; well capacity

Author: József Pápay - ; Professor Emeritus - Miskolc University, Mol- PLC



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