Patent ID: 6302204
Filing Date: 2001-10-16
Classification: E21B,G01D,G01N,G01V

Abstract:
A method of recovering hydrocarbons from a production wellbore producing hydrocarbons from a formation comprising:(a) injecting a fluid in an injection wellbore spaced apart from the production wellbore to make a fluid/hydrocarbon interface in the formation;(b) permanently installing a plurality of seismic sensors in a survey wellbore;(c) transmitting seismic signals into the formation from a plurality of source locations;(d) detecting said seismic signals by the seismic sensors in the survey wellbore;(e) determining a parameter of interest relating to the fluid/hydrocarbon interface from the detected seismic signals; and(f) operating a downhole tool at at least one location selected from (i) the production wellbore, and, (ii) the injection well, in response to the determined parameter of interest to control the flow of hydrocarbons into the production wellbore.