Tree capless cone seal manifold

Details Tree capless cone seal manifold Tree capless cone seal manifold

1987-03-27

1988-07-05

Novosad, Stephen J.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166360, 166368, 166332, 137607, E21B 3404

Patent

active

047548134

ABSTRACT:
Disclosed is a production tree (10) with a top block (mandrel) (12) of the tree provided with a cone-shaped male connector member (14) which also functions as a manifold, and called a cone seal manifold, by having a plurality of shuttle valves (66) which, in the production mode connect umbilical hydraulic control lines (44) to valve actuator control lines (42). In the workover mode, a running tool (132) having a mating bell-shaped female connector member (134) engages the cone seal manifold (14) and moves the shuttle valves (66) to disconnect the umbilical control lines (44) from the valve actuator control lines (42) and to open the valve actuator control lines (42) to rig hydraulic control lines in the running tool (132) through the mating cone seal surfaces (134,56). Normally closed passageways (112) in the cone (56) of the cone seal manifold (14) are opened by fluid pressure from the rig control lines.

REFERENCES:
patent: 3576194 (1971-04-01), Christensen
patent: 3820600 (1974-06-01), Baugh
patent: 4460156 (1984-07-01), Hazelrigg et al.
patent: 4497369 (1985-02-01), Hurta et al.
patent: 4607701 (1986-08-01), Gundersen

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