Method and device for joining oilfield tubulars

Details Method and device for joining oilfield tubulars Method and device for joining oilfield tubulars

B - Operations, Transporting

23

K

B23K 13/02 (2006.01) E21B 17/08 (2006.01) E21B 19/22 (2006.01)

Patent

CA 2277228

A method for joining well and other oilfield tubulars by amorphous bonding comprises the steps of positioning a body of amorphous material (16) between adjacent and surfaces of a pair of oilfield tubulars (3, 4) that are to be joined and using induction heating to melt the amorphous material and create on cooling a metallurgical bond between the tubulars (3, 4). Throughout the heating and bonding process the tubulars (3, 4) are fixed in axial alignment with each other using clamp means which include a mandrel (1) which is inserted into the interior of the tubulars (3, 4) so that the bonding process can be performed in a sealed chamber (17, 18) which is filled with an inert gas.

Un procédé pour relier des éléments tubulaires utilisés dans les puits et d'autres éléments tubulaires utilisés dans les champs pétrolifères par fixation avec un matériau amorphe, comprend les étapes consistant à positionner un corps (16) en un matériau amorphe entre les surfaces terminales adjacentes d'une paire d'éléments tubulaires (3, 4) utilisés dans les champs pétrolifères et qui sont à réunir, et à faire appel à un chauffage par induction pour fondre le matériau amorphe et créer en refroidissant une liaison métallurgique entre les éléments tubulaires (3, 4). Pendant le processus de chauffage et de formation de la liaison, les éléments tubulaires (3, 4) sont immobilisés en étant alignés axialement, au moyen d'un dispositif de serrage comprenant un mandrin (1) introduit à l'intérieur des éléments tubulaires (3, 4) de sorte que le processus de formation de la liaison peut se faire dans une chambre étanche (17, 18) remplie d'un gaz inerte.

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