While-drilling bit balling flushing assistor

The utility model relates to a while-drilling drill bit balling flushing assistor which comprises an upper connector and a lower connector, the lower portion of the upper connector is telescopically sleeved with the lower connector, the upper end of the upper connector is connected with a drill colu...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	DAI MINGDONG, DAI ZHENGYI, ZENG LING
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!