DRILLING BIT

FIELD: soil or rock drilling.SUBSTANCE: invention relates to mining and construction - to drilling tools designed to drill wells in shock-rotational manner. Drill bit for percussion-rotary drilling comprises body reinforced with rock-cutting inserts and a central washing channel communicating with l...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Belousov Anatolij Vasilevich, Timonin Vladimir Vladimirovich
Format:	Patent
Sprache:	eng ; rus
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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