Hydraulically actuated well shifting tool

Details Hydraulically actuated well shifting tool Hydraulically actuated well shifting tool

1991-07-01

1992-10-20

Bui, Thuy M.

Wells

Valves, closures or changeable restrictors

Fluid operated

166374, E21B 2300, E21B 3400

Patent

active

051562103

ABSTRACT:
A shifting tool, operating on a single control line, selectively shifts a sliding sleeve in a well to either an open or closed position. The tool includes two sets of shifting dogs to manipulate a sliding sleeve in either direction. The tool includes locking dogs which insure proper location of the shifting tool as well as removing the load from the supporting coil tubing.

REFERENCES:
patent: 4542792 (1985-09-01), Akkerman
patent: 4658902 (1987-04-01), Wesson et al.
patent: 4658904 (1987-04-01), Doremus et al.
patent: 4848463 (1989-07-01), Ringgenberg et al.

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