SUBSURFACE SAFETY VALVE OF MINIMIZED LENGTH

A subsurface safety valve of minimized length comprises a tubular valve housing with a valve closure member therein movable between an open and a closed position, an axially shiftable flow tube for opening the valve closure member, a plurality of longitudinally disposed springs radially spaced about...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	HILL, THOMAS, GUS, NEWMAN, BILLY, RAY, SIDES, WINFIELD, MICHAEL
Format:	Patent
Sprache:	eng ; fre ; ger
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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