FIELD: mining.
SUBSTANCE: group of inventions relates to controlled directional drilling. Drilling assembly direction control system in the well shaft containing heavy-weight tool drill stem, housing installed near the end and at least partially outside of heavy-weight tool drill stem, deflecting driving shaft connected to the drilling bit and at least partially installed in the housing; and a motor connected to the housing, at that, the motor, when it is activated, independently rotates the housing.
EFFECT: creation of the drilling assembly controlled along the direction of motion with diameter, in fact, equal to diameter of the drill string, with the possibility to pass through downhole equipment.
20 cl, 4 dwg
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