Expandable downhole tubing

Details Expandable downhole tubing Expandable downhole tubing

E - Fixed Constructions

21

B

E21B 43/10 (2006.01) E21B 43/08 (2006.01) E21B 17/02 (2006.01) E21B 17/08 (2006.01)

Patent

CA 2308180

A tubing coupling method comprises the steps: providing a length of expandable tubing (72) and a length of larger diameter non-expanding tubing (74); connecting an end portion of the expandable tubing (72) to an end portion of the non-expanding tubing (74) with a portion of expandable tubing (76); running the tubing (72, 74, 76) into a bore; and expanding the expandable tubing (72, 76). The expandable tubing (72) may form part of an expandable well or sand screen, or may be expandable bore liner (12).

L'invention concerne un procédé de couplage de tubes de production qui comporte les étapes consistant à: prévoir une longueur de tube (72) de production expansible et une longueur de tube (74) de production non expansible de diamètre supérieur; connecter une partie d'extrémité du tube (72) de production expansible à une partie d'extrémité du tube (74) de production non expansible à l'aide d'une partie de tube (72) de production expansible; descendre le tube (72, 74, 76) de production à l'intérieur d'un trou de forage; et procéder à l'expansion du tube (72, 76) de production expansible. Le tube (72) de production expansible peut former une partie d'un filtre de puits ou d'un tamis à sable expansible, ou peut constituer une colonne (12) de forage perdue expansible.

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