Downhole safety valve apparatus and method

Details Downhole safety valve apparatus and method Downhole safety valve apparatus and method

2011-03-29

2011-03-29

Dang, Hoang (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S129000, C166S133000, C166S188000, C166S322000

Reexamination Certificate

active

07913769

ABSTRACT:
The application discloses a safety valve including a flapper valve and a packer assembly to be installed in a bore to isolate a first zone from a second zone. Preferably, the safety valve includes a hydraulic conduit bypassing the flapper valve to allow communication therethrough when the valve is closed. Furthermore, the safety valve preferably allows unobstructed passage of tools and fluids therethrough when the flapper valve is open. The application discloses a method to install a safety valve in an existing string of tubing by deploying a packer assembly having an integral safety valve.

REFERENCES:
patent: 3327781 (1967-06-01), Nutter
patent: 4022273 (1977-05-01), Marathe
patent: 4641707 (1987-02-01), Akkerman
patent: 5058672 (1991-10-01), Cochran
patent: 5125457 (1992-06-01), Meaders
patent: 6167965 (2001-01-01), Bearden et al.
patent: 2004/0045722 (2004-03-01), Sangla
PCT International Search Report and Written Opinion corresponding to PCT/US2005/033515, dated Sep. 7, 2006.

Affiliated with

Also associated with

Rating

Downhole safety valve apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Downhole safety valve apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downhole safety valve apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2751829