Directional well drilling

Details Directional well drilling Directional well drilling

E - Fixed Constructions

21

B

E21B 7/08 (2006.01) E21B 7/06 (2006.01)

Patent

CA 2382596

An orienter for controlling the drilling direction in a well. A main body 40, 23 is couplable to a drill string, and a nose tubing 50 is movably mounted by a universal joint in the main body. A collar 42 with a bore 43 engages in a cam-like manner with an extension 26 of the nose tubing on the drill string side of the universal joint. The collar is movable longitudinally 'a' to control the magnitude 'b' of the nose tubing, and circumferentially 'c' to control the azimuth 'd'. The nose tubing is aligned on both sides of the universal joint and the bore of the collar is angled relative to the main axis of the main body. The collar may be hydraulically or electrically controlled.

Orienteur permettant de contrôler la direction de forage dans un puits. Un corps principal (40, 23) peut être couplé à une rame de forage, et un tube frontal (50) est fixé de manière amovible par un joint universel dans le corps principal. Un collier (42) doté d'un alésage (43) s'enclenche à la manière d'une came, avec une extension (26) du tube frontal sur le côté de la rame de forage du joint universel. Le collier est amovible de manière longitudinale 'a' pour contrôler la magnitude 'b' du tube frontal et de manière circonférentielle 'c' pour contrôler l'azimut 'd'. Le tube frontal est aligné sur les deux côtés du joint universel et l'alésage du collier est incliné par rapport à l'axe principal du corps principal. Le collier peut être contrôlé par voie hydraulique ou électrique.

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