Patent ID: 8042842
Filing Date: 2011-10-25
Classification: E21B,F16J,F16L

Abstract:
1. An expandable tubular joint comprising: a first tubular element including a first portion, provided with a male thread, and a second portion extending said first portion and comprising a second tubular element comprising wherein said second and third abutment surfaces are conical surfaces having substantially identical angles of inclination relative to a plane transverse to a longitudinal direction, selected so as to allow said second abutment surface to rest against said third abutment surface, generating a first radial and sealing interference contact of one of said first inner and outer surfaces of the first lip against said second outer surface or said third inner surface respectively, and such that, during a diametral expansion in a plastic deformation region subsequently carried out on the expandable tubular joint, said first outer surface and said third inner surface are forced locally to define a second sealing interference contact.