Expandable fluted liner hanger and packer system

Details Expandable fluted liner hanger and packer system Expandable fluted liner hanger and packer system

E - Fixed Constructions

21

B

E21B 43/10 (2006.01) E21B 23/00 (2006.01)

Patent

CA 2576536

Methods and apparatus create an attachment and a seal between two tubular members in a wellbore. An expandable assembly includes a packer and liner hanger to be expanded into a surrounding tubular. The packer can be a longitudinally corrugated packer and can have a sealing element disposed on an outer surface thereof. The liner hanger can include a plurality of formations extending outward along an outer surface of the liner hanger to form interspaces for longitudinal fluid flow between the formations. In operation, an expansion tool moves axially through an inner diameter of the expandable assembly to expand the liner hanger with a fluted expander and subsequently the packer with a substantially uniform outer diameter cone.

Méthodes et appareil créant une fixation et un scellement entre deux éléments tubulaires dans un tube. Un ensemble perdu comprend une garniture d'étanchéité et une suspension par colonne perdue expansible dans un tube qui l'entoure. La garniture d'étanchéité peut être cannelée sur le plan longitudinal et peut comporter un élément de scellement disposé sur sa surface extérieure. La suspension à colonne perdue peut comprendre plusieurs formations qui s'allongent vers l'extérieur, le long d'une surface extérieure de la suspension à colonne perdue, afin de former des espacements pour permettre l'écoulement d'un fluide sur le plan longitudinal entre les formations. Lorsque l'appareil fonctionne, un outil d'expansion se déplace sur le plan axial à travers un diamètre intérieur de l'ensemble expansible afin d'allonger la suspension à colonne perdue au moyen d'une allonge cannelée, et par la suite, la garniture d'étanchéité à l'aide d'un cône d'un diamètre extérieure essentiellement uniforme.

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