Directional drilling technology can be used in glacier boreholes to obtain additional ice cores and to pass over sticking drills. Experimental sidetracking of 5G-2 hole in the deep borehole at Vostok station, Antarctica, showed the high efficiency of the directional drilling without using of special whip-stocks to deviate the hole.

The results of research work aimed at the development of special technical means to penetrate into subglacial lakes in order to take water samples with the condition of compliance with the measures excluding its contamination are presented.