Apparatus for use in a wellbore

Details Apparatus for use in a wellbore Apparatus for use in a wellbore

E - Fixed Constructions

21

B

E21B 23/00 (2006.01) E21B 7/06 (2006.01) E21B 10/50 (2006.01) E21B 10/60 (2006.01) E21B 12/04 (2006.01) E21B 23/01 (2006.01) E21B 23/02 (2006.01) E21B 29/06 (2006.01) E21B 49/06 (2006.01)

Patent

CA 2164442

A number of devices are used in combination for helping ensure that a whipstock (22) is correctly positioned and held firmly in place. These include improved anchoring apparatus (15, 18, 20), an improved receptacle (12) for mounting the anchoring apparatus on an anchor (26), an improved anchor (26), an indicator device (840, 850) for indicating when the anchoring apparatus is correctly mounted on said anchor, a toggling connection (112, 114) for allowing a whipstock to pivot relative to said anchoring assembly, an installation tool (24), and a whipstock with a support assembly. A new mill (930, 950, 970) is also described.

On utilise conjointement plusieurs dispositifs pour s'assurer qu'un sifflet de déviation (22) est correctement positionné et maintenu solidement en place. Ces dispositifs sont: un appareil d'ancrage amélioré (15, 18, 20), un élément de réception amélioré (12) prévu pour monter l'appareil d'ancrage sur une ancre (26), une ancre améliorée (26), un dispositif indicateur (840, 850) servant à indiquer si l'appareil d'ancrage est correctement monté sur l'ancre, une connexion à articulations (112, 114) permettant de faire pivoter un sifflet de déviation par rapport à l'ensemble d'ancrage, un outil de montage (24), et un sifflet de déviation comportant un ensemble support. L'invention se rapporte également à une nouvelle fraise (930, 950, 970).

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