Wells – Above ground apparatus – Inner member anchor or seal with lateral port
Patent
1997-07-23
1999-04-06
Tsay, Frank
Wells
Above ground apparatus
Inner member anchor or seal with lateral port
166120, 166126, E21B 33064
Patent
active
058905359
ABSTRACT:
A diverter body having an upper portion, a central portion and a lower portion is secured to the upper end of a riser and lands in a housing. The central portion has lateral flow openings that axially align with a lateral flowline outlet in the housing. A pair of identical gallery seals locate above and below the lateral flowline outlet. The upper gallery seal is located between the upper portion, the central portion and the housing. The upper gallery seal has upper and lower metal rings and a central elastomer sandwiched therebetween. An outer diameter of the elastomer seals against the housing bore. The rings are symmetric and are mated to the elastomer along interfaces which are S-shaped in cross-section to form shoulders. The shoulders face radially inward. An annular cavity and a pair of flexible annular lips are formed along the inner diameter portion of the elastomer. A passage extends through the diverter bodies and communicates with the cavity. Hydraulic fluid is pumped through the passages to pressurize the cavities and energize the elastomers, forcing the outer diameter portions of the elastomers outward to seal against the bore.
REFERENCES:
patent: Re29497 (1977-12-01), Freitag
patent: 3664376 (1972-05-01), Watkins
patent: 3904183 (1975-09-01), Allinquant et al.
patent: 3923133 (1975-12-01), Chivari
patent: 4174112 (1979-11-01), Carrens
patent: 4443017 (1984-04-01), Knott
patent: 4718495 (1988-01-01), Lubitz et al.
patent: 5193616 (1993-03-01), Hynes
Petrash Donald R.
Slyker Richard W.
ABB Vetco Gray Inc.
Bradley James E.
Tsay Frank
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