Apparatus and methods for creation of down hole annular barrier

Details Apparatus and methods for creation of down hole annular barrier Apparatus and methods for creation of down hole annular barrier

E - Fixed Constructions

21

B

E21B 33/13 (2006.01) E21B 33/16 (2006.01)

Patent

CA 2555563

Methods and apparatus are provided for performing an expedited shoe test using an expandable casing portion as an annular fluid barrier. Further provided are methods and apparatus for successfully recovering from a failed expansion so that a shoe test can be completed without replacement of the expandable casing portion. In one recovery method, a selectively actuatable fluid circulation tool is provided to further expand the expandable portion or perform a cementing operation. Additionally, methods and apparatus are provided to drill a wellbore and form an annular fluid barrier in a single trip.

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