SUBSURFACE SAFETY VALVE OF MINIMIZED LENGTH

• Main Authors: HILL, THOMAS, GUS, NEWMAN, BILLY, RAY, SIDES, WINFIELD, MICHAEL
• Format: Patent
• Language: English; French; German
• Published: 30.07.1997
• Edition: 6
• Subjects: 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

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...