Rotary drilling bit of engineering driller

Provided is a rotary drilling bit of an engineering driller. The utility model relates to the technical field of drilling equipment, in particular to a drilling slag tapping device which is mainly used for solving the problem of low drilling slag tapping efficiency and comprises a barrel, an upper c...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU PANJUN, LU MINGLI, LIU XIANGJUN
Format:	Patent
Sprache:	chi ; eng
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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