METHOD FOR ROCK DRILLING WITH ELECTRICAL PULSED DISCHARGES AND DRILLING TOOL Russian patent published in 2008 - IPC E21C37/18 E21B7/00 

FIELD: mining, particularly methods or devices for dislodging, particularly by electricity.

SUBSTANCE: method involves transferring high-voltage pulses with frequency defined by head rotation rate on rotary drilling head. Drilling tool includes serially connected drilling string 9, drilling head 1, high-voltage pulse source 11 arranged directly in drilling tool over drilling head 1 and charging means 12. The charging means 12 is arranged in drilling tool over high-voltage pulse source 11.

EFFECT: increased drilling efficiency due to increased operational drilling tool reliability.

3 cl, 6 dwg, 1 tbl