A simple model to infer interwell connectivity only from well-rate fluctuations in waterfloods

This paper presents a procedure that systematically accounts for the interactions between wells in a reservoir. The reservoir is considered to be an input–output system with the injection rates as the input and production rates as the output. A simple capacitance model is developed to infer the interwell connectivity only from the injection/production data fluctuations on a reservoir. A commercial simulator on a synthetic field with five injectors and four producers is used to test the approach. The simulation results show that the simple capacitance model satisfactorily captures the long time dependent behavior between injectors and producers.