FIELD: soil or rock drilling.
SUBSTANCE: invention relates to mining, oil and gas industry, in particular, to methods for drilling wells. Method of cumulative drilling involves creation of well by means of cumulation with discharge of charges of explosive substances with cumulative grooves from channel of bit under action of pressure of flushing liquid, side with recess, to destructed rock. Charges are preliminary brought into working condition under effect of induction current created in bit, with their further operation at impact on rock. At the channel outlet of the bit and on charges of explosives there made is screw thread for imparting explosive substances to the charge. To bring into operation, before actuation, induction current melts metal wire, which is in charge of explosives.
EFFECT: simplified design of bit, increased reliability and service life of bit.
1 cl, 2 dwg
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