Bottom hole shut-in tool

Details Bottom hole shut-in tool Bottom hole shut-in tool

1987-11-24

1989-02-14

Massie, Jerome W.

Wells

Packers or plugs

With controllable passage between central conduit and space...

166192, 166324, 166250, 277169, E21B 3328, E21B 3412

Patent

active

048040428

ABSTRACT:
A bottom hole shut-in tool incorporating a ball and seat shut-off valve and a ball and seat pressure equalizing valve. The ball elements of the valves are formed of elastomeric material, which allows the ball elements to engage their seats in continuous annular sealing contact even when debris from the well is trapped between a ball and its seat or when a ball is not exactly aligned with its seat. This arrangement effectively seals off the pressure gauge used in conducting a pressure survey from fluid in the well tubing located above the shut-off valve.

REFERENCES:
patent: 2531258 (1950-11-01), Cranfill
patent: 3249372 (1966-05-01), Pollack
patent: 3381751 (1968-05-01), McLelland
patent: 3540744 (1970-11-01), Chen
patent: 3542126 (1970-11-01), Owen
patent: 3587735 (1971-06-01), Owen
patent: 4415028 (1983-11-01), Watkins
patent: 4453599 (1984-06-01), Fredd
patent: 4519457 (1985-05-01), Holland
patent: 4669537 (1987-06-01), Rumbaugh
I. I. Gazda and H. L. Cantlon, "Downhole Shut-Off Tool," SPE Symposium on Low-Permeability Gas Reservoirs, May 20-22, 1979, Denver, Colo., pp. 335-341.

Affiliated with

Also associated with

Rating

Bottom hole shut-in 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 Bottom hole shut-in tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bottom hole shut-in tool will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1360979