DEVICE FOR CORES DRILLING FROM WELL WALLS OR CHANNELS Russian patent published in 2012 - IPC E21B49/06 E21B25/00 

FIELD: mining.

SUBSTANCE: device includes bearing rod with supply wheel and rotary drive, driven hollow shaft, drilling head, pipe-like mill connected to suction device by channel system, mechanism of rotation and simultaneous supply of pipe-like mill. Drilling head is provided with channel hole made in upper part parallel to its axis, and in lower part - at angle α in range 5÷35° relative to its axis. Pipe-like mill contains outbreaker of cores. Mechanism of rotation and simultaneous supply of pipe-like mill includes supply wheel, at least two transmitting sleeves and driven hollow shaft connected with each other and with pipe-like mill by means of ball joint drive containing hollow joints with cone cavities on ball-shaped head, nutted-up stops are located in the cavities. Channel system is formed by pipe-like mill, hollow joints, transmitting sleeves and driven hollow shaft.

EFFECT: enlarging manufacturing capabilities and field of application, improving core quality.

2 cl, 3 dwg