E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/10 (2006.01) E21B 17/042 (2006.01) F16L 13/14 (2006.01)
Patent
CA 2547853
A radially expandable sealed tubular joint (1) for use in oil and gas wells having a pair of radially expandable tubular elements (2 and 5) each having threading at a free end thereof and coupled to one another to form a flush joint connection, the threading (3 and 6) including hooked incomplete threads located at least adjacent the free ends, and a sealing substance extending between and adhering to the threading of one element and the threading of the other element, wherein after a radial expansion of the coupled pair of elements the sealing substance remains extended between and adhered to the threading (3) of one element and the threading (6) of the other element. The sealing substance is either a greaseless elastomeric sealant coated on one or both of the pair of elements (2 and 5) or a pure metal applied to each of the pair of elements (2 and 5).
L'invention concerne un raccord tubulaire étanche (1) s'utilisant dans les puits de pétrole et de gaz et comportant une paire d'éléments tubulaires (2 et 5) expansibles radialement, pourvus chacun d'un filetage à une de leurs extrémités libres et couplés l'un à l'autre pour former un raccord à joint lisse, ce filetage (3 et 6) possédant des filets incomplets recourbés qui sont au moins adjacents aux extrémités libres, et une substance d'étanchéité s'étendant entre le filetage d'un élément et le filetage de l'autre élément et y adhérant, ladite substance d'étanchéité demeurant étendue entre le filetage (3) d'un élément et le filetage (6) de l'autre élément auxquels elle adhère toujours après une expansion radiale de la paire accouplée d'éléments. Cette substance d'étanchéité est soit un agent d'étanchéité élastomère sans graisse déposé sur un ou deux éléments de la paire d'éléments (2 et 5), soit un métal pur appliqué sur chaque élément de la paire d'éléments (2 et 5).
Carcagno Gabriel E.
Santi Nestor J.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Tenaris Connections Ag
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