Coiled tubing and power cables

Details Coiled tubing and power cables Coiled tubing and power cables

E - Fixed Constructions

21

B

E21B 17/20 (2006.01)

Patent

CA 2624401

A cable is installed in coiled tubing for use in. downhole wells; the cable having an expandable jacket (22) extruded around it. After being installed in the coiled tubing, and the expandable jacket is caused to expand, securing the cable in the coiled tubing. The expandable jacket is caused to expand by the application of heat or by the application of a liquid hydrocarbon. The expandable jacket may be discontinuous along the length of the power cable, discontinuous portions being provided by interspersing the expandable jacket with sections non-expandable material.

Selon l'invention, un câble est installé dans un tube de production concentrique à utiliser dans des puits de forage, il présente une enveloppe expansible (22) extrudée. Une fois le câble installé dans ledit tube de production, l'enveloppe expansible est amenée à se dilater, ce qui permet de sécuriser le câble dans ledit tube. Cette enveloppe expansible est amenée à se dilater par application de chaleur ou d'un hydrocarbure liquide. Ladite enveloppe expansible peut être discontinue sur la longueur du câble électrique, des parties discontinues étant engendrées par intercalation de l'enveloppe expansible avec des sections de matière non expansible.

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