WATER THERMAL DRILL TIP Russian patent published in 2019 - IPC E21B7/00 E21B7/15 

FIELD: soil or rocks drilling.

SUBSTANCE: invention relates to the wells in the ice thermal drilling devices, and can be used for the glaciers internal structure and the sea ice accumulations, hummocks and stranded hummocks, studying. Wells in the ice drilling device, connected to the water thermal drill in the form of a tip, contains a hollow cone-shaped body. At the tip end a valve is coaxially located, opening in the presence of certain force directed against the thermal drill movement, and blocking the water flow if there is no force thereon. Thus, with the drilling speed and water flow rate depending on the depth simultaneous recording to the computer or logger and the records subsequent processing by the water zero flow rate, the device allows to record the thermal drill tip exit from ice to the cavity, which, together with the drilling rate data, gives the voids in ice formations boundaries position and sizes.

EFFECT: enabling the voids in ice heaps boundaries and sizes determination during their drilling with hot water.

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