Methods and apparatus to control downhole tools

Details Methods and apparatus to control downhole tools Methods and apparatus to control downhole tools

E - Fixed Constructions

21

B

E21B 31/107 (2006.01) E21B 7/06 (2006.01) E21B 23/00 (2006.01) E21B 31/113 (2006.01) E21B 47/12 (2006.01)

Patent

CA 2462983

The present invention generally provides a downhole tool with an improved means of transmitting data to and from the tool through the use of wired pipe capable of transmitting a signal and/or power between the surface of the well and any components in a drill string. In one aspect, a downhole tool includes a body, and a mandrel (110) disposed in the body and movable in relation to the body. A conducive wire (135) runs the length of the body and permits signals and/or power to be transmitted though the body as the tool changes its length.

la présente invention concerne de façon générale un outil de fond de trou assorti de moyens améliorés pour la transmission de données en direction et en provenance dudit outil grâce à l'utilisation d'un câble sous gaine capable de transmettre un signal ou de l'énergie entre la surface du puits et tout composant d'un train de tiges. Selon un aspect, l'outil de fond de trou comprend un corps et un mandrin (110) disposé dans ce corps et qui se déplace par rapport à lui. Un fil conducteur (135) courant le long du corps permet de transmettre des signaux et/ou de l'énergie au travers du corps lorsque la longueur de l'outil change.

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