Debris barrier assembly

摘要

A method and apparatus for a debris barrier assembly having a sleeve, an outer housing assembly coupled to the sleeve, and first and second biasing members disposed within the outer housing assembly. A support member is coupled to the sleeve and is in contact with an end of the first and second biasing members. The debris barrier assembly is coupled to a polished bore receptacle to prevent debris from entering the PBR. The debris barrier assembly is operable to compensate for a pressure differential between the internal region of the PBR and the external region of the surrounding wellbore. The debris barrier assembly and the PBR may be run in the wellbore on a work string, and the sleeve may be actuated to actuate a downhole tool connected to the sleeve to perform a downhole operation. The debris barrier assembly may be retrieved from the wellbore using the work string.

主权项

1. A debris barrier assembly for connection to a work string, comprising:
a sleeve configured to be coupled to the work string; an outer housing assembly coupled to the sleeve; a first biasing member and a second biasing member disposed within the outer housing assembly; a support member in contact with an end of the first biasing member and an end of the second biasing member, wherein the support member is coupled to the sleeve and disposed within the outer housing assembly, the support member being releasable from the sleeve down hole; an inner seal disposed between an inner surface of the outer housing and an outer surface of the sleeve, wherein the inner seal is movable along the outer surface of the sleeve; and an outer seal coupled to an outer surface of the outer housing assembly, wherein the outer seal is configured to sealingly engage an inner surface of a polished bore receptacle.