S type directional well drag reduction drilling tool

The utility model relates to a S type directional well drilling tool technical field is a S type directional well drag reduction drilling tool. Including drilling rod, drill collar, screw rod and thedrill bit that is the S form, the drilling rod, drill collar, screw rod and the drill bit top -down t...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LI JUNSHENG, JIANG CHAOMIN, SONG ZHAOHUI, LUO LIANG, WAN JIAOYU, DING HONG, YUAN XINWEI
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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