Multiple drain drilling and production apparatus

E - Fixed Constructions – 21 – B

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Details

E21B 7/06 (2006.01) E21B 23/02 (2006.01) E21B 41/00 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2210852

Multiple drain drilling and production apparatus (16) comprising a generally cylindrical body (18) adapted to be located within a well, orienting means (24, 28) adapted to be received in the body (18) to deviate a drill string received within the body, at a predetermined depth, from a path coaxial with the body to a path at a predetermined angle to the axis of the body. According to the invention the apparatus comprises at least one outlet means (20) comprising a generally tubular element (42) received within the body and opening there into and displaceable from a first position generally coaxial with the body, into a second position at a predetermined angle thereto, by an actuator (22) received within the body, the orienting means (24, 28) being located adjacent the outlet means (20).

Un appareil de forage et de production à drains multiples (16) comportant habituellement un corps cylindrique (18) conçu pour insertion dans un puits et un dispositif de guidage (24, 28) conçu pour insertion dans le corps cylindrique (18) afin de dévier un train de forage introduit dans le corps, à une profondeur prédéterminée, à partir d'un tracé suivant le même axe que le corps jusqu'à un tracé suivant un angle prédéterminé par rapport à l'axe du corps. L'invention, c.-à-d. l'appareil, comprend au moins un moyen de sortie (20) formé d'un élément habituellement tubulaire (42) introduit dans le corps de l'appareil et débouchant à l'intérieur de celui-ci. Grâce à un mécanisme de commande (22) introduit dans le corps, cet élément tubulaire peut passer d'une position initiale, qui suit généralement le même axe que le corps, à une seconde position à un angle prédéterminé. Le dispositif de guidage (24, 28) est placé près du moyen de sortie (20).

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