METHOD FOR INCREASE OF LIFE TIME OF A DRILL CROWN

A method for increase of time life of a drill crown consists in that the surface that destructs the rock is equipped with hard-alloy cutters with openings of frontal and side washing, and connection section with inner left or round-support thread is placed with displacement towards the depth of the...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	REMKHA YURII STEPANOVYCH, HOLOVCHENKO VOLODYMYR OLEKSIIOVYCH, POMAZAN SERHII HRYHOROVYCH
Format:	Patent
Sprache:	eng ; rus ; ukr
Schlagworte:	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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