Roller bit pressure balance and oil storage compensating system

The utility model discloses a roller bit pressure balance and oil storage compensating system, it includes oil storage hole, oil through and the oil filler point of going up the setting at the drill bit bit leg body, its characterized in that the oil storage hole is the cylindrical hole, is equipped...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WU KONGBO, GU YAMIN
Format:	Patent
Sprache:	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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