Bleedoff tool for well test system

Details Bleedoff tool for well test system Bleedoff tool for well test system

1985-08-12

1987-02-03

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

Destructible element

166330, 166332, 137 681, E21B 3412

Patent

active

046403639

ABSTRACT:
Disclosed is a safety system for well testing, utilizing a new and novel bleedoff tool in the subsea test tree handling string, which provides rapid pressure reduction in the handling string and assures mechanical disconnect of the subsea test tree if the test tree cannot be disconnected hydraulically. The bleedoff tool is operated and opened to bleed pressure from the handling string by applying a predetermined torque. This tool may be extended by pull to transmit higher than opening torque and will transmit torque after opening. The bleedoff tool contains an internal valve, which closes when the bleedoff tool is opened, and retains fluids in the handling string. The bleedoff tool operating torque values are not changed by high internal pressures or great axial tension or compressive loads on the tool.

REFERENCES:
patent: 3331378 (1967-07-01), Gibbs et al.
patent: 4286661 (1981-09-01), Gazda
patent: 4522370 (1985-06-01), Noack et al.
patent: 4553598 (1985-11-01), Meek et al.
patent: 4560004 (1985-12-01), Winslow et al.

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