Method of creating a weld in a wellbore

Details Method of creating a weld in a wellbore Method of creating a weld in a wellbore

E - Fixed Constructions

21

B

E21B 41/00 (2006.01) E21B 17/08 (2006.01) E21B 29/10 (2006.01)

Patent

CA 2376963

A method of creating a weld to connect a first element to a second element, said elements being arranged in a wellbore (1) containing a wellbore fluid, is provided. The method comprises selecting a welding path along which the weld is to be created, selecting a volume portion of the wellbore, in which selected volume portion said path is located and sealing said selected volume portion from the remainder of the wellbore volume, and providing pressure control means (12, 16) for controlling the fluid pressure in said selected volume portion. The pressure control means is then operated so as to reduce the fluid pressure in said selected volume portion to a selected pressure at which the weld can be created, and the weld is created along the selected welding path.

L'invention concerne un procédé de formation d'une soudure, destiné à relier un premier élément à un second élément, ces éléments étant situés dans un puits de forage (1) contenant un fluide de forage. Ce procédé consiste à sélectionner un axe de soudure le long duquel doit être formée la soudure, à sélectionner une partie du volume du puits dans laquelle est situé ledit chemin, à sceller ladite partie de volume au volume du puits restant et à fournir des dispositifs (12, 16) de commande de la pression permettant de réguler la pression du fluide dans la partie de volume sélectionnée. On utilise alors ces dispositifs de commande de la pression afin de réduire la pression du fluide dans ladite partie de volume, jusqu'à une pression choisie à laquelle la soudure peut être formée le long de l'axe de soudure.

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