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Proposed subglacial Antarctic lake environment access methodology

In oil well drilling, there is a concept referred to as “Drilling with Casing”; a process where the tubular that is utilized to drill the hole is also used to case the resultant borehole without the removal of the tubular from the borehole. This method is proposed to be modified for SALE access, where coiled tubing, composed of steel or a lighter weight composite tubular, would be used to drill through the ice with hot water to a point close to SALE. The size of the borehole created by the hot water would only be of sufficient clearance to allow passage of the tubular downward. When the tubular was in position, then the hot water inside the tubular would be displaced with a non-freezing fluid. The water around the tubular would gradually freeze, but the incompressibility of the fluid inside would prevent the tubular from collapsing as the water froze. This tubular could be placed quickly with a small surface footprint and used as a permanent conduit to the lake.