Device for reducing frictional resistance during drilling based on shape memory alloy spring

The invention discloses a device for reducing frictional resistance during drilling based on a shape memory alloy spring. The device comprises a spline mandrel, a spline sleeve, a body, a reset spring, a mud pulse generator, the shape memory alloy spring and a mud turbine generator. The body is inte...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CUI YONGHUI, BO YUBING, BO TAO, LIU RUI, BO HEQIU, ZHENG ZHIGANG, YU DEPING, BO CHAO, LI JINGSONG, CAI WEI, PU WENXUE
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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