DOWNHOLE MOTOR WITH HYDRAULIC CONTROLLER (EMBODIMENTS) Russian patent published in 2021 - IPC E21B4/02 E21B7/08 

FIELD: soil or rock drilling; mining.

SUBSTANCE: group of inventions refers to drilling equipment. Downhole motor with hydraulic regulator comprises tubular motor housing with working member inside and spindle section in lower part, shaft in spindle section, on which drilling bit is fixed. Top diverter is connected to engine housing upper part. Lower diverter is connected to engine housing lower part. Body of each deflector is made tubular and its cavity is interconnected with cavity of engine housing. On the outside on the body of each deflector deflecting elements are installed. According to the first embodiment, each deflecting element is a swivel deflection vane pivotally connected to the diverter housing with possibility of its turning away from the diverter housing, wherein under each deflection vane in the deflector housing there is a cylindrical cavity with a piston movable in it, contacting and interacting with the rotary deflection vane. According to the second embodiment, the deflecting element is a diverting vane installed in the diverter housing with possibility of its extension to the side from the diverter housing, wherein under each deflection vane in the deflector housing there are cylindrical cavities with pistons movable in them, contacting and interacting with the retractable deflection vane. Each cylindrical cavity is interconnected with the cavity of the deflector body through the hole in the body of the deflector. Deviation blades and pistons of upper and lower deflectors are oriented in opposite directions from each other, wherein located on one opposite side each moving piston has diameter larger or smaller than diameter of each movable piston, which is located on the other opposite side.

EFFECT: group of inventions is aimed at improving reliability and service life of downhole motors used for drilling of inclined wells.

6 cl, 10 dwg