Male element for a sealed threaded tubular connection

Details Male element for a sealed threaded tubular connection Male element for a sealed threaded tubular connection

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 15/06 (2006.01)

Patent

CA 2577521

Before tapered reduction swaging of the end region of a tube and machining in this region of a tapered male threading (2) and a male lip (3) to obtain a male tubular element for makeup into a female tubular element to form a sealed threaded tubular connection after diametrical expan~sion, the tube is shaped over a portion of its length to produce a cylindrical internal surface (20) which connects via a chamfer (21) to the cylindrical internal surface (10) of the lip (3) obtained subsequently by machining, the radius (R2) of the first surface being greater than the radius (R1) of the second surface. Application to hydrocarbon wells.

Selon l'invention, avant d'effectuer le délardage de la région terminale d'un tube et de réaliser par usinage, dans cette région, un filetage mâle conique (2) et une lèvre mâle (3) de façon à obtenir un élément tubulaire mâle destiné à venir en contact avec un élément tubulaire femelle pour former un raccord tubulaire fileté étanchéifié après expansion du diamètre, on façonne le tube sur une partie de sa longueur pour produire une surface interne cylindrique (20) qui est raccordée, par l'intermédiaire d'un biseau (21), à la surface interne cylindrique (10) de la lèvre (3) obtenue ultérieurement par usinage, le rayon (R2) de la première surface étant supérieur au rayon (R1) de la deuxième surface. L'invention trouve des applications dans le domaine des puits d'hydrocarbures.

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