Sand plug oil pipe drills through and washs specific drill bit

The utility model provides a sand plug oil pipe drills through and washs specific drill bit, is including cutting blade holder, cutting sword piece, drilling rod and drill bit, and the cutting blade holder is established to cylindrical, and the center is equipped with the limbers, is equipped with t...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Niu Yongliang, Ma Baozhi, Yan Dongming, Wang Hua, Liu Zhaomin, Guo Fei, Wang Tongbin
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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