Method and apparatus for completing a wellbore

Details Method and apparatus for completing a wellbore Method and apparatus for completing a wellbore

E - Fixed Constructions

21

B

E21B 17/08 (2006.01) E21B 29/00 (2006.01) E21B 41/00 (2006.01) E21B 43/08 (2006.01) E21B 43/10 (2006.01) E21B 43/14 (2006.01)

Patent

CA 2327773

A method and apparatus to provide a large bore hook hanger system incorporating sand exclusion at a junction in a multilateral wellbore includes the running of a lateral liner having an expandable sleeve positioned thereon to bridge a milled window from the lateral borehole to the primary borehole, expandable sleeve including a pre-machined window and a hook to hang the liner from the primary borehole. The hook further acts to center the pre-machined window in the expandable sleeve to provide access to the primary wellbore. The expandable sleeve is preferably covered on its outer surface with an elastomeric material and is outwardly concentric to an expandable packer for run-in. Once the expandable sleeve is positioned at the appropriate location in the junction, the expandable packer is inflated thus permanently deforming the expandable sleeve into contact with the open hole of the lateral borehole thereby preventing sand or gravel ingress to the primary borehole.

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