POWER DEVIATION OF A CONTROL SYSTEM DRILLING UNIT Russian patent published in 2018 - IPC E21B7/08 

FIELD: drilling of soil or rock.

SUBSTANCE: invention relates to drilling technology and can be used in drilling wells, namely directional wells with an extended horizontal section. Deflection unit of the drilling device control system includes a housing having an axis, a shaft rotatably disposed in the housing, consisting of a drive shaft and a driven shaft connected by a hinge, on the driven shaft there is installed a radial-thrust bearing with the possibility of keeping it collinear with the axis of the body, an actuating member and a movement mechanism arranged to allow the shaft to deviate from the axis of the housing. Shaft is provided with a second hinge, forming an intermediate shaft between the drive and the driven shaft. Driven shaft is provided with a second radial-thrust bearing mounted near the end of the housing. Executive body contains three wedges and three displacement sensors. Mechanism of movement of the actuator is made in the form of three stepper motors located at an angle of 120 degrees from to each other. Each stepper motor corresponds to a wedge-deflector mounted to be movable in both directions to allow the shaft to deviate from the axis of the housing and a displacement sensor is mounted on each wedge-deflector.

EFFECT: reliability of the deflection unit of the drilling device control system is increased, the accuracy of the bit positioning is improved to conduct the well along a predetermined trajectory.

1 cl, 3 dwg