FIELD: oil and gas industry.
SUBSTANCE: system of drilling assembly direction control in a well comprises a housing, a varying fluid flow channel in the housing, a fluid drive mechanism in hydraulic conjunction with varying fluid flow channel, and a deflecting core coupled to the output of fluid drive mechanism. Deflecting core is made independently rotatable relative to the housing. Varying fluid flow channel comprises a flow control valve adapted to change fluid flow through varying fluid flow channel.
EFFECT: simplified drilling assembly downhole direction.
19 cl, 8 dwg
