DEVICE FOR DEVIATION OF BOTTOM-HOLE MOTOR COMPONENTS Russian patent published in 1998 - IPC

FIELD: bore-hole drilling technology. SUBSTANCE: this can be used in drilling inclined-directed and horizontal bore-holes by means of bottom-hole motor. Changing of deviation angle of motor sections is effected according to linear law without lifting drilling string to ground surface. Device has operating mechanism 1, hydraulic chamber installed above bottom-hole motor and connected with annular space. Also provided are deviating support, tube which in its upper part carries cross-member, and in its lower part it carries wedge. Hydraulic drive is made in the form of follow-up hydraulic drive arrangement with control valve. Control valve is installed so that it can interact by its upper part with operating mechanism, and by its lower part it can interact with cross-member of tube. Lower part of tube with wedge partly embraces upper section of screw-type bottom-hole motor. Pivotally secured on upper section of bottom-hole motor is deviating support which can interact with wedge. EFFECT: higher efficiency. 1 dwg