System and method for characterizing a flow property of a production well site in a reservoir

Abstract

A method and system of characterizing a flow property of a production well site in a reservoir are provided. The method includes identifying a plurality of injection and production well sites in the reservoir; injecting fluid into selected injection well sites in accordance with an injection schedule; monitoring an output at the production well sites; determining a time delay between the selected injection sites and the production sites based on the monitored output using an estimated capacitance model; and characterizing a flow property of a production well site using the time delay and the estimated capacitance model.

1 . A method of characterizing a flow property of a production well site in a reservoir, the method comprising:
 identifying a plurality of injection and production well sites in the reservoir;   injecting fluid into selected injection well sites in accordance with an injection schedule;   monitoring an output at the production well sites;   determining a time delay between the selected injection sites and the production sites based on the monitored output using an estimated capacitance model; and   characterizing a flow property of a production well site using the time delay and the estimated capacitance model.   
     
     
         2 . The method according to  claim 1 , wherein the flow property comprises a production rate of the production well site. 
     
     
         3 . The method according to  claim 1 , further comprising using the time delay in the estimated capacitance model to detect higher permeability channels within a rock formation between the injection well sites and the production well sites. 
     
     
         4 . The method according to  claim 3 , further comprising uniformly locating the injection and production well sites to enhance detection of the higher permeability channel. 
     
     
         5 . A system of characterizing a flow property in a production well, the system comprising:
 a processor configured to:   determine a time delay between selected injection sites and selected production sites based on a monitored output at the production well sites using an estimated capacitance model, wherein fluid is injected into selected injection well sites in accordance with an injection schedule while an output is monitored at the production well sites; and   characterize the flow property of a production well site using the time delay and the estimated capacitance model.   
     
     
         6 . The system according to  claim 5 , wherein the flow property comprises a production rate of a production well site. 
     
     
         7 . The system according to  claim 5 , wherein the processor is further configured to use the time delay in the estimate capacitance model to detect higher permeability channels within a rock formation between the injection well sites and the production well sites.