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 43/10 (2006.01) E21B 21/10 (2006.01)

Patent

CA 2617498

Methods and apparatus are provided for performing an expedited shoe test using an expandable casing portion as an annular fluid barrier. Such an expandable annular fluid barrier may be used in conjunction with cement if so desired but cement is not required. 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.

L~invention concerne des procédés et des appareils pour réaliser un essai de coussinet hâtif à l~aide d~une portion de cuvelage extensible comme barrière de fluide annulaire. Une telle barrière de fluide annulaire extensible peut être utilisée en combinaison avec du ciment si on le souhaite, mais le ciment n~est pas indispensable. Elle concerne également des procédés et des appareils pour récupérer avec succès après une expansion ratée de façon à réaliser un essai de coussinet sans remplacer la portion de cuvelage extensible.

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