Method of joining expandable tubulars

Details Method of joining expandable tubulars Method of joining expandable tubulars

B - Operations, Transporting

23

K

B23K 13/00 (2006.01) B23K 13/01 (2006.01) B23K 20/00 (2006.01) B23K 20/02 (2006.01) B23P 15/26 (2006.01)

Patent

CA 2492476

A method of joining expandable tubulars and expanding the joined tubulars comprises joining the tubulars by forge welding and flushing a reducing flushing gas around the heated tubular ends during at least part of the forge welding operation such that oxides are removed from the forge welded tubular ends and the amount of irregularities between the forge welded tubular ends is limited and radially expanding the joined tubulars.

L'invention concerne un procédé de raccordement de tubulaires expansibles. L'expansion des tubulaires raccordés consiste à joindre les tubulaires par soudage à la forge et à rincer avec un gaz de rinçage réducteur les extrémités des tubulaires chauffées pendant au moins une partie de l'opération de soudage, de manière à éliminer les oxydes des extrémités des tubulaires soudés à la forge et à limiter les irrégularités entre les extrémités des tubulaires soudés à la forge, et entraîner ainsi l'expansion des tubulaires raccordés dans le sens radial.

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