It is shown that in order to expand the field of practical application of directional measuring hydraulic fracturing, it is necessary to create technical means that provide cutting of initiating slots on the walls of boreholes in rock masses of different strength. A new slotter design is proposed, the distinctive feature of which is using carbide cutters that are extended during cutting slots along the normal to the device axis. The device is brought into operation due to its normalized movement tagging the bottom. The slotter dimensions allow using it in diamond drill holes of 76 mm diameter. The device is designed to create stress concentrator slots in adjoining zones of boreholes in hard rocks with a coefficient of 5-8 according to M. M. Protodyakonov’s scale.
Map location and geological logs of core for 1994 diamond drill holes of the Joy Claims of the Rocky Mountain Creek, Nome D-1 Quadrangle