Document DetailsA Deep Hot Water Drill System with Potential for Bottom Sampling
|Periodical/Journal:||Ice Core Drilling. Proceedings of the Third International Workshop on Ice Drilling Technology (eds C. Rado and D. Beaudoing)|
During the 1987-88 Antarctic season, we tested a hot water drilling system capable of drilling up to 3,000 meters. By insulating a one inch diameter hose, the heat loss is reduced so water temperature at the nozzle falls off by 2oC/100 m, of water depth. In addition, wires incorporated in the jacket allow measurement while drilling to assure hole straightness and large enough diameter to permit instrument raising and lowering. Heat input for this system is 0.5 W.
Some ideas will be presented on drilling sub-glacial material. Saturated till sampling requires a tool used by the well drilling industry for sampling material below the water table while rock sampling and coring frozen till utilize mining technology. The use of additives to enhance drilling rates will also be discussed.