Downhole ball circulation tool

Details Downhole ball circulation tool Downhole ball circulation tool

2008-01-15

2008-01-15

Bagnell, David (Department: 3672)

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

C166S386000, C166S373000, C251S129140

Reexamination Certificate

active

07318478

ABSTRACT:
A circulation tool10for use downhole in a well includes a housing12having one or more bypass ports16for circulation between a bore in the housing and an annulus surrounding the housing. A sleeve68is axially movable within the housing, and axially spaced seals70, 74seal between the sleeve and the housing when the sleeve is in the closed position. A ball52is rotatably mounted to the sleeve, and includes a seat54about a central bore55in the ball for engagement with a plug. When the sleeve closes off the circulation ports16, the ball is rotated to the open position with a substantially full bore diameter.

REFERENCES:
patent: 4291722 (1981-09-01), Churchman
patent: 4657092 (1987-04-01), Franks, Jr.
patent: 4987841 (1991-01-01), Rawson et al.
patent: 5176208 (1993-01-01), Lalande et al.
patent: 5335731 (1994-08-01), Riggenberg et al.
patent: 5383520 (1995-01-01), Tucker et al.
patent: 5402850 (1995-04-01), Lalande et al.
patent: 6275929 (2001-08-01), Blum et al.
patent: 2003/0136563 (2003-07-01), Allamon et al.

Affiliated with

Also associated with

Rating

Downhole ball circulation tool 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 ball circulation tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downhole ball circulation tool will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2806758