Hydraulically actuated fishing tool

A fishing tool is disclosed which is responsive to hydraulic pressure to move away support 28 for collets 18 to allow the collets to deflect and make contact with the stuck object. Upon removal of the hydraulic force, the support for the collets is returned, preferably by a biasing spring 24, to its...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	LARRY THOMAS PALMER
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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