Directional well drilling

Details Directional well drilling Directional well drilling

E - Fixed Constructions

21

B

E21B 7/08 (2006.01)

Patent

CA 2722762

A drilling assembly comprises a bent housing terminating in a drill bit (18), and a top section coupled to the bent section. The top section is suspended upon coiled tubing (10). The drilling assembly includes an orienter means (2-6) capable of rotating the bent housing with respect to the top section, wherein the orienter means includes an electric motor (34) situated in the bent section. The bent housing includes sensor means (30) for monitoring downhole physical variables, the sensor means being situated in the bent section. The orienter means may be an electro-mechanical motor.

L'invention porte sur un ensemble de forage qui inclut un boîtier coudé s'achevant dans un trépan, et une section supérieure couplée à la section coudée. La section supérieure est suspendue à un tube spiralé. L'ensemble de forage inclut un moyen d'orientation capable de faire tourner le boîtier coudé par rapport à la section supérieure, le moyen d'orientation incluant un moteur électrique situé dans la section coudée. Le boîtier coudé inclut des moyens de détection pour contrôler des variables physiques de fond de trou, les moyens de détection étant situés dans la section coudée. Les moyens d'orientation peuvent être un moteur électromécanique.

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