Subsea test tree

Details Subsea test tree Subsea test tree

1979-08-06

1982-03-23

Leppink, James A.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166344, 166363, 166364, E21B 33035, E21B 2300

Patent

active

043208045

ABSTRACT:
Latching means are provided for use in a test valve assembly and preferably comprise a first rocker section carryable with an upper conduit portion. A second rocker section is carryable with a second conduit portion. Lock means have a recess contoured for securement over the rocker sections and are manipulatable over the first and second rocker sections to locked and unlocked positions. Shiftable means are carried across the locked means to a first position whereby the lock means are engaged over the rocker sections and the conduit portions are secured together. The shiftable means are moved to a second position whereby the lock means are disengaged from the second rocker section and the conduit portions are in disengaged position. Second lock means also are provided for additional securement. First and second ball valve elements are shiftable between fully open and fully closed positions, one of the valve elements being manipulated from fully closed position to fully open position prior to the other of said valve elements being manipulated from fully closed position, and vice versa. The ball valves in the apparatus are provided in a cartridge assembly for unitized insertion and removal from within the apparatus.

REFERENCES:
patent: 3096999 (1963-07-01), Ahlstone et al.
patent: 3457991 (1969-07-01), Sizer et al.
patent: 3492027 (1970-01-01), Herring
patent: 3523579 (1970-08-01), Nelson
patent: 3625281 (1971-12-01), Herd et al.
patent: 3732923 (1973-05-01), Fowler
patent: 3870101 (1975-03-01), Helmus

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