Method and system for injecting a treatment fluid into a well

Details Method and system for injecting a treatment fluid into a well Method and system for injecting a treatment fluid into a well

2007-04-03

2007-04-03

Gay, Jennifer H. (Department: 3672)

Wells

Central chamber sealed with respect to prepositioned...

C166S305100

Reexamination Certificate

active

10982236

ABSTRACT:
A system for injecting a treatment fluid into a well, the system includes: a surface controlled subsurface safety valve; a valve control conduit which extends from the surface controlled subsurface safety valve to a wellhead of the well, wherein the surface controlled subsurface safety valve is controlled by varying the fluid pressure in the valve control conduit; a fluid injection opening in the valve control conduit effective for discharging treatment fluid into the well; a treatment fluid injection conduit arranged which is connected to the valve control conduit; at least one treatment fluid injection opening; and a one way check valve which prevents fluid flow from each treatment fluid injection opening via the treatment fluid injection conduit into the valve control conduit, wherein the treatment fluid injection conduit is arranged into a section of the well which is located below the surface controlled subsurface safety valve such that at least one treatment fluid injection opening is located below the surface controlled subsurface safety valve.

REFERENCES:
patent: 4042033 (1977-08-01), Holland et al.
patent: 5083615 (1992-01-01), McLaughlin et al.
patent: 5875852 (1999-03-01), Floyd et al.
patent: 2005/0098210 (2005-05-01), Strattan et al.

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