Apparatus and method for expanding a liner patch

Details Apparatus and method for expanding a liner patch Apparatus and method for expanding a liner patch

E - Fixed Constructions

21

B

E21B 43/10 (2006.01) E21B 17/02 (2006.01) E21B 17/08 (2006.01) E21B 29/10 (2006.01) E21B 47/09 (2006.01) F16L 55/163 (2006.01)

Patent

CA 2270986

An apparatus for expanding a liner patch in a tubular to seal a hole therein, said apparatus comprising a body (134, 206, 306) having a top portion (133, 209, 309), a bottom portion (146, 229, 336) and a middle portion, the middle portion having an outer diameter greater than the top portion and an outer diameter greater than the bottom portion; a first set of fingers (135, 208, 308) disposed around the top portion of said body and a second set of fingers (156, 228, 335) disposed around the bottom portion of said body; the arrangement being such that, in use, said fingers can be urged radially outwardly by displacement thereof over said middle portion.

L'invention concerne un appareil destiné à étendre une pièce de revêtement dans un matériel tubulaire en vue d'y boucher un trou, ledit appareil comprenant un corps (134, 206, 306) possédant une partie supérieure (133, 209, 309), une partie inférieure (146, 229, 336) et une partie centrale, la partie centrale présentant un diamètre extérieur supérieur à celui de la partie supérieure, ainsi qu'un diamètre extérieur supérieur à celui de la partie inférieure. L'invention concerne également un premier ensemble de doigts (135, 208, 308) disposé autour de la partie supérieure dudit corps et un second ensemble de doigts (156, 228, 335) disposé autour de la partie inférieure dudit corps; l'agencement étant tel qu'au cours de l'utilisation, on peut pousser lesdits doigts raidalement vers l'extérieur en les déplaçant sur ladite partie centrale.

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