Patent ID: 6782954
Filing Date: 2004-08-31
Classification: E21B

Abstract:
A method for establishing fluid communication with an isolated zone of a wellbore comprising:providing a tool having a mandrel and a housing, the mandrel having a bore and being adapted at an uphole end for connection to a tubing string and being closed at a downhole end, and the housing carrying an uphole packer spaced axially along the housing from a downhole packer, the housing being movable axially on the mandrel; positioning the housing on the mandrel at a first position for establishing fluid flow from the wellbore below the downhole packer, through the bore of the mandrel and to the wellbore above the uphole packer for running in the tool; positioning the housing on the mandrel position at a second position for blocking fluid flow between the bore of the mandrel and the wellbore above and below the packers and applying a first pressure in the bore of the mandrel to actuate the uphole and downhole packers and isolate the zone therebetween; and positioning the housing at a third position for maintaining actuation of the packers, for continuing to block fluid flow between the wellbore above and below the packers and for establishing fluid flow between the bore of the mandrel and the isolated zone.