Circulating sub and method

Details Circulating sub and method Circulating sub and method

2008-01-29

2008-01-29

Bagnell, David (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S334100, C166S207000

Reexamination Certificate

active

10511053

ABSTRACT:
A control sub for use with a hydraulically operated downhole tool. In an embodiment, the sub comprises an outer sleeve connected to a work string and an inner sleeve slidably engaged to the outer sleeve by matching hex profiles, connected to the downhole tool. Radial ports in the outer sleeve provide selective circulation of fluid from the tool and by closing these ports with the sleeve fluid pressure in to the downhole tool can be controlled. Closure is effected by setting down weight on the sub against the tool. An indexing mechanism is also described to keep the tool in a configuration, which maintains pressure on the tool. The sub is suitable for use with an expander tool.

REFERENCES:
patent: 2627891 (1953-02-01), Clark
patent: 2858099 (1958-10-01), Althouse, Jr. et al.
patent: 3519075 (1970-07-01), Mullins
patent: 3907046 (1975-09-01), Gaylord
patent: 4047564 (1977-09-01), Nix et al.
patent: 4962815 (1990-10-01), Schultz et al.
patent: 5392862 (1995-02-01), Swearingen
patent: 6152228 (2000-11-01), Carmichael
patent: 6161632 (2000-12-01), Hovden
patent: 6279657 (2001-08-01), Carmichael et al.
patent: 6527049 (2003-03-01), Metcalfe et al.
patent: 6543552 (2003-04-01), Metcalfe et al.
patent: 7086477 (2006-08-01), Duggan
patent: 2004/0045720 (2004-03-01), Duggan
patent: 2006/0185852 (2006-08-01), Ross et al.
patent: 2272923 (1994-06-01), None
patent: 2307932 (1997-06-01), None
patent: 1469094 (1989-03-01), None
patent: WO 00/37771 (2000-06-01), None

Affiliated with

Also associated with

Rating

Circulating sub 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 Circulating sub and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circulating sub and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3959918