Dual-purpose drill rod fisher

A dual-purpose drill rod fisher comprises a dual-purpose fisher connector, wherein the dual-purpose fisher connector is connected with a guide cover; the guide cover is funnel-shaped, and the internal diameter of the guide cover is matched with the external diameter of a drill rod; and the guide cov...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MA WANNIAN, XUE HONGWEI, LIANG JIAN
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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