Abstract:

A calculationmethod of relative permeability from water cut of production data is presented in this paper. The method reflects practical oil field production performance, especially field is developed tomiddle or later period. The relative permeability curves are difficult to be acquisited through laboratory experiments. Whereas permeability curve acquired through themethod presented here can reflect current condition, and exact permeability can be offered to numerical simulation. Thismethod can overcome limitations of laboratory experiments. Both relative permeability ratio and relative permeability value can be obtained by thismethod. At this point, itcan be used to predict the performance of the reservoir and evaluate exploitation effectiveness.

Key words: relative permeability, water cut, prediction