BIT TO DRILL-MELT ICE

FIELD: drilling technique, driving of circle-shaped bottom holes in ice covering in Arctic and Antarctic regions. SUBSTANCE: bit includes body-heater, heating element, windows cut in body-heater for thawed water and enclosure put on body-heater with clearance L>=0,02D where D is bit diameter with...

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Bibliographic Details
Main Authors KRASILEV A.V, ZUBKOV V.M, KUDRJASHOV B.B, VASIL'EV N.I, DMITRIEV A.N
Format Patent
LanguageEnglish
Russian
Published 10.08.2003
Edition7
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:FIELD: drilling technique, driving of circle-shaped bottom holes in ice covering in Arctic and Antarctic regions. SUBSTANCE: bit includes body-heater, heating element, windows cut in body-heater for thawed water and enclosure put on body-heater with clearance L>=0,02D where D is bit diameter with formation of space. Helical groove where heating element coming in the form of heating cable is laid is cut in surface of body-heater. Windows in body-heater are arranged in diametrical opposition to first turn of heating cable. EFFECT: enhanced efficiency of drilling-melting of ice thanks to concentration of thermal energy directly on ice melting in zone of hole bottom and to preservation of its directivity in process of drilling. 1 dwg
Bibliography:Application Number: RU20010134320