Theoretical and experimental research to remove hot water out of drill hose of deep hot-water drilling system

To date, hot-water drilling with its fast penetration rate is the most advanced technology to access rapidly subglacial environments through the thick ice in the Antarctica and Greenland. During deep hot-water drilling, it is important to remove the residual hot water from the drill hose when drilling stops; otherwise, the residual hot water in the hose will quickly cool down and be frozen in less than 1 h at −20 °C if no mitigation measures...