Seal assembly for subsurface safety valve

Seal assembly for subsurface safety valve

A seal assembly for use in a tubular includes a mandrel (124), upper and lower compressible seal members (111, 113) disposed around the mandrel, first and second upper piston assemblies (102, 108) in contact with a first end of the seal member, and first and second lower piston assemblies (104, 106)...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: SMITH, RODDIE
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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Beschreibung
Zusammenfassung:A seal assembly for use in a tubular includes a mandrel (124), upper and lower compressible seal members (111, 113) disposed around the mandrel, first and second upper piston assemblies (102, 108) in contact with a first end of the seal member, and first and second lower piston assemblies (104, 106) in contact with a second end of the seal member. The piston assemblies include a piston head (107A, 109A), and a piston extension sealing member (107B, 109B) integrally formed with the piston head, and extending at least partially between the mandrel and the compressible seal member. The compressible seal members form a seal with the tubular when at least one of the piston assemblies is urged toward the compressible seal member.