Directional coring automatic locating device

A directional coring automatic locating device comprises an outer casing pipe, a left inner casing pipe, a right inner casing pipe, a middle inner casing pipe, a guide casing pipe and an elastic element. A stop screw is fixedly connected to the outer casing pipe; the left inner casing pipe and the r...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	TAN LICHENG, TAN XIONGWEI
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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