High pressure interventionless borehole tool setting force

A high pressure compressed gas source is separated from an actuation piston by a pilot valve that is selectively operated with raising annulus pressure to break a rupture disc to provide access to a shuttle type valve. Movement of the shuttle valve using pressure applied to opposing pistons of diffe...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	Bane, Darren E
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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