Downhole clutch device

The invention discloses a downhole clutch device, and belongs to the technical field of downhole tools for oil and gas drilling and production. The downhole clutch device comprises an outer cylinder and a mandrel. The outer cylinder rotatably sleeves the mandrel, an inner circulation liquid path mec...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG DUANXIANG, PENG MI, CHEN CUNDONG, CAO LIANGBO, YAO YUXIANG, SHAN DAIWEI, JIANG ZHONGJIAN
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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