Method of repair of collapsed or damaged tubulars downhole

Details Method of repair of collapsed or damaged tubulars downhole Method of repair of collapsed or damaged tubulars downhole

E - Fixed Constructions

21

B

E21B 23/01 (2006.01) E21B 29/10 (2006.01) E21B 33/129 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2475671

A method of repairing tubulars downhole is described. A swage is secured to a force magnification tool, which is, in turn, supported by an anchor tool. Applied pressure sets the anchor when the swage is properly positioned. The force magnification tool strokes the swage through the collapsed section. The anchor can be released and weight set down on the swage to permit multiple stroking to get through the collapsed area. The swage diameter can be varied.

L'invention concerne un procédé de réparation de tubages de trou de sonde. Un redresse-tubes est fixé à un outil d'amplification de force, lequel est, à son tour, soutenu par un outil d'ancrage. L'application d'une pression met en place la pièce d'ancrage lorsque le redresse-tubes est correctement placé. L'outil d'amplification de force enfonce le redresse-tubes dans la section affaissée. La pièce d'ancrage peut être libérée et un poids installé sur le redresse-tubes pour permettre une course multiple destinée à franchir la zone affaissée. Le diamètre du redresse-tubes peut être modifié.

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