ROTARY CONTROLLED DRILLING SYSTEM Russian patent published in 2024 - IPC E21B7/06 

FIELD: drilling of soil or rocks.

SUBSTANCE: invention relates to drilling technology, namely to rotary controlled drilling systems (RCS). Trajectory-controlled bottomhole assembly (BHA) comprises a drill string component including an actuator subsystem, wherein the actuator subsystem comprises an actuator with an output shaft for selective rotation of the valve disc around the axis of rotation of the BHA. Actuator subsystem further comprises a position marker on the output shaft, a position sensor near the output shaft, wherein the position sensor and the position marker interact when the position marker rotates with the output shaft to a position adjacent to the position sensor, position sensor in response transmits a signal to the actuator subsystem for use in controlling the angular orientation of the valve disc. BHA additionally comprises a deflecting subsystem passing between a drill string component and a drill bit, which receives a flow of drilling fluid under pressure through a drill string component and comprises a housing, a plurality of thrust hydraulic structures associated with the periphery of the housing, plurality of central pipes of the valve in the housing for supply of drilling mud for actuation of the corresponding one of the thrust hydraulic structures and a plurality of peripheral flow pipes in the housing for supply of drilling mud to the drilling bit. Flow tubes are located closer to periphery than central tubes of the valve. At that, according to the selected angular orientation of the valve disc relative to the valve pipes, the inlet of drilling fluid under pressure into the valve pipes is selectively provided or blocked.

EFFECT: higher efficiency of well trajectory control.

20 cl, 34 dwg