Dizzy dognut anchoring system

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 33/04 (2006.01) E21B 17/00 (2006.01) E21B 17/10 (2006.01)

Patent

CA 2163946

There is described a method and an improved apparatus for rotatably suspending a tubing string in a well bore, the apparatus comprising a tubular coupler connected to the uphole end of the tubing string, a tubing hanger disposed annularly about the coupler in fixed axial relationship, the coupler being rotatable relative to the hanger, a hanger bowl for supporting the hanger therein so that the tubing string connected to the coupler can be suspended in the well bore and a drive system operably connected to the coupler and extending through the hanger bowl which can be actuated to rotate the coupler and hence the tubing string attached thereto.

La présente invention porte sur un appareil amélioré et une méthode permettant de suspendre un train de tiges de manière qu'il puisse tourner dans un sondage. L'appareil se compose d'un manchon de raccordement branché à l'extrémité supérieure du train de tiges, d'un collier à coins fixé au pourtour du manchon de manière à le recouvrir sur le plan axial, de sorte que le manchon puisse tourner par rapport au collier et d'une cuvette de collier maintenant celui-ci en position. L'appareil est conçu de sorte que le train de tiges branché au manchon de raccordement puisse être suspendu dans le sondage et qu'un système d'entraînement relié au manchon traverse la cuvette du collier, laquelle peut être commandée pour faire tourner le manchon de raccordement et, ainsi, le train de tiges auquel ce dernier est assujetti.

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