Upper termination with sliding sleeve seals

Details Upper termination with sliding sleeve seals Upper termination with sliding sleeve seals

1984-12-10

1986-06-03

Novosad, Stephen J.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166344, 2851371, 285920, E21B 2304, E21B 4104, E21B 4301

Patent

active

045924260

ABSTRACT:
A supporting connection system for a riser extending between a floating vessel and a subsea well utilizes a termination head that removably fits within a termination housing. The termination head and housing have radial ports that register with each other to transmit fluid between the vessel and the subsea well. A sliding sleeve is located in the radial port of the termination housing. The sleeve is reciprocated by hydraulic pressure between an open position removed from the termination head and a closed position with its forward end located inside the termination head radial passage. The forward end of the sliding sleeve seals within the termination head passage.

REFERENCES:
patent: 2725122 (1955-11-01), Thorne
patent: 3326579 (1967-06-01), Fowler
patent: 3874706 (1975-04-01), Arnold
patent: 3966235 (1976-06-01), Lewis
patent: 4403658 (1983-09-01), Watkins
Ser. No. 600662, 4/16/84, Regan.

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