Choke and kill control system

Details Choke and kill control system Choke and kill control system

1987-11-27

1988-08-02

Novosad, Stephen J.

Wells

Means for guiding insertable element laterally of well axis

166323, 166332, E21B 2303, E21B 3410

Patent

active

047608790

ABSTRACT:
A choke and kill control system for stopping production of an oil and/or gas well by injecting a fluid from the outside of the well conduit into the well bore through a check safety valve. A biasing piston and cylinder assembly initially latches the valve in the open position and is actuated by a retrievable control positioned in a sidepocket mandrel. The control may be a bias valve, a rupture disc, or may be a blanking plug for maintaining the valve in the open position. The assembly may be flushed and cleaned when desired to overcome well contamination.

REFERENCES:
patent: 4161960 (1979-07-01), Watkins
patent: 4325431 (1982-04-01), Akkerman
patent: 4407363 (1983-10-01), Akkerman
patent: 4434847 (1984-03-01), Vazquez et al.
patent: 4527631 (1985-07-01), Vazquez
patent: 4585067 (1986-04-01), Blizzard et al.
patent: 4651822 (1987-03-01), Johnston et al.

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