Fishing spear for borehole instrument

The utility model discloses a salvaging barrel for the borehole instrument, used for the petroleum industry. The utility model is suitable for salvaging the various instruments which are fallen into the well bore. The utility model is provided with an upper joint and a barrel body. A circlip is arra...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	QIN LIAN, JIESHAN XU, RUQIU BO
Format:	Patent
Sprache:	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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