Shear activated safety valve system

Details Shear activated safety valve system Shear activated safety valve system

2005-10-19

2009-12-01

Bagnell, David J (Department: 3676)

Wells

Means for cutting cable or rope below ground

C166S338000, C166S373000, C166S332800, C166S319000, C166S363000, C166S321000, C137S068110

Reexamination Certificate

active

07624792

ABSTRACT:
A safety valve system includes a safety valve having an actuator and a line connected to the actuator. The safety valve is operable by opening the line in the well, with the line being free of any connection to a surface control system. Another safety valve system includes multiple safety valves. An actuator of each safety valve is connected to an actuator of another safety valve via a line. A biasing force in each of the actuators is operative to close the respective one of the safety valves in response to opening of the line. The biasing force is produced at least in part by hydrostatic pressure in a well.

REFERENCES:
patent: 3860066 (1975-01-01), Pearce et al.
patent: 4173256 (1979-11-01), Kilgore
patent: 4223736 (1980-09-01), Foster, Jr.
patent: 4522370 (1985-06-01), Noack et al.
patent: 5101904 (1992-04-01), Gilbert
patent: 6269874 (2001-08-01), Rawson et al.
patent: 2003/0168219 (2003-09-01), Sloan
patent: 2004/0003926 (2004-01-01), Nivens et al.
patent: 2005/0126789 (2005-06-01), Nivens et al.
patent: 2427422 (2006-12-01), None
Search Report for United Kingdom application No. GB0620525.6.

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