Method and apparatus for drill stem data transmission

Details Method and apparatus for drill stem data transmission Method and apparatus for drill stem data transmission

G - Physics

01

V

G01V 3/00 (2006.01) E21B 41/00 (2006.01) E21B 47/16 (2006.01) H04B 13/00 (2006.01) H04H 9/00 (2006.01)

Patent

CA 2305161

A drill stem communication system for transmitting data between downhole and uphole locations in a borehole includes at least one transducer (40, 40') at a first location on a drill stem (18) for modulating motion and/or stress in the drill stem (18), and at least one transducer (42') at a second location on the drill stem (18) for detecting the modulation. Control devices (36, 260, 312, 382) may be provided at both locations for establishing communication therebetween.

Ce système de communication dans un train de tiges, servant à transmettre des données entre des emplacements situés en fond de trou et en haut du trou, dans un trou de forage, comprend au moins un transducteur (40, 40') placé au niveau d'un premier endroit sur un train de tiges (18) et destiné à moduler le mouvement du train de tiges (18) et/ou la contrainte exercée sur celui-ci, ainsi qu'au moins un transducteur (42') placé au niveau d'un second endroit sur le train de tiges (18) et destiné à détecter cette modulation. Des dispositifs de commande (36, 260, 312, 382) peuvent être montés au niveau de ces deux endroits aux fins d'établissement de communication entre ceux-ci.

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