Well having inductively coupled power and signal transmission

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 41/00 (2006.01) E21B 47/12 (2006.01)

Patent

CA 2612731

Well for production of hydrocarbons, comprising a hole drilled down into an underground, a casing fastened to the hole wall, a production pipe that extends into the casing from the surface and down to a hydrocarbon-containing zone, a hanger on the surface in an upper end of the well, in which hanger the production pipe and casing are hung up and electrically short-circuited, and a packer arranged sealingly and electrically short-circuiting in the annulus between the production pipe and the casing, in or close to a lower end of the well, distinguished in that the well further comprises: a primary coil arranged concentrically about the production pipe, a secondary coil arranged concentrically about the production pipe, a load connected to the secondary coil, and an alternating current generator/signal unit connected to the primary coil.

La présente invention concerne un puits de production d~hydrocarbures comprenant un puits de forage dans le sous-sol, un tubage fixé à la paroi du puits, une conduite de production qui descend dans le tubage de la surface jusqu~à la zone contenant les hydrocarbures, un support disposé sur la surface à une extrémité supérieure du puits, support auquel sont suspendus la conduite de production et le tubage avec une mise en court-circuit électrique, et une garniture disposée de manière étanche avec une mise en court-circuit électrique dans l~annulaire entre la conduite de production et le tubage, à ou près d~une extrémité inférieure du puits. Le puits se caractérise en ce qu~il comprend également : un enroulement primaire disposé de manière concentrique autour de la conduite de production, un enroulement secondaire disposé de manière concentrique autour de la conduite, un circuit de charge connecté à l~enroulement secondaire et un générateur à courant alternatif/unité de signal connecté à l~enroulement primaire.

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