Since the second half of 1983 at the coal fields of Vorkutinskaya GRE the KPS-300 unit has been mastered. Already drilled more than 7 thousand meters of pilot wells, the average depth of which was 110 meters, the maximum - 185 meters.
How to cite:
Blinov V.A. Improvement of tying schemes for drilling with core transporting hydraulics // Journal of Mining Institute. 1985. Vol. 105. p. 114-116.
