Vallourec & Mannesmann Oil & Gas France

Benoît Duquesne

Eric Verger

Laurent Dubedout

Scott Anthony Benzie

Nicolas Breziat

Andréi G Filippov

Philippe Henaut

To produce a sealing contact between male and female threaded elements, a contact zone is provided, located between male and female threading portions separated from each other in an axial direction. The male and female elements have respective cylindrical portions that extend over the entire length of the contact zone. After expansion, a sealing contact is established between surfaces in two annular areas by a radial interference fit.

Method for producing a threaded tubular connection sealed by radial expansion

An assembly including two symmetrically-disposed expandable threaded tubular joints. The joints including a male tubular element at one end of a tube and equipped with a male thread, a first annular lip having a first axially abutting surface, a first inner surface and a first outer surface, and a second abutting surface; and a female tubular element equipped with a female thread, a second annular lip having a third abutting surface, a second outer surface and a second inner surface, and a third inner surface and a fourth axially abutting surface which, together with the second outer surface, defines an annular housing homologous to the corresponding first lip. The two female tubular elements form two opposing ends of a female/female-type sleeve.

Two hermetic threaded tubular joints

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Valenciennes, France

Benoît Duquesne