DEFLECTOR FOR DIRECTED DRILLING OF WELLS WITH CORE SAMPLING AT INTERVALS OF ARTIFICIAL DEVIATION Russian patent published in 2020 - IPC E21B7/08 E21B25/00 

FIELD: soil or rock drilling.

SUBSTANCE: invention relates to device for directed drilling with coring for solid minerals. Diverter for directional well drilling with core sampling at intervals of artificial curvature comprises non-rotating housing, drive shaft, core receiver, deflection unit, detachment unit, locking assembly. Drive shaft is made hollow, inside it the extracted cores-receiving pipe is placed connected to head unit. Hollow drive shaft is made of two parts interconnected by hinge to ensure rotation and axial load transmission to rock-destructing tool. Deviation unit is made in the form of a wedge-like washer, which is rigidly fitted in a non-rotating housing, with an angle of skew between its end surfaces up to 1.5°. Locking unit includes locking slot made on outer side of housing, fixing pin screwed into piston, and spring arranged on upper part of drive shaft, which is connected with sleeve. In the detachment unit the spacer cone with the wedge inserts is installed with the possibility of interaction with spacer dies, having a raised working surface in the form of cutters directed to the longitudinally non-rotating housing.

EFFECT: higher efficiency of operation.

1 cl, 2 dwg