Abstract: The present method for treating oil-water per meability curves is improved. The base of this method is to ncrmalized and to average relative permeability curves. By using relationship between the irreducible water saturation、 the residural oil saturation. the wwater relative permeability at residtlal oil saturation and the air permeability as w'ell as. the normalized average relative permeablity'. one (an obtain oil-water relative permeability at different ait permeability in which the shape of oil-phase relative permcability curves keeps constant and the shape of water-phase relative permeability curves varies with the air permeability.

Key words: Relative permeability curve, Normalization, Average air permeability, Saturation, Data processing