Hydraulic running tool for liner hangers

Details Hydraulic running tool for liner hangers Hydraulic running tool for liner hangers

1979-02-06

1981-02-10

Pate, III, William F.

Wells

Expansible anchor or casing

Liner hanger

166212, E21B 2300

Patent

active

042496012

ABSTRACT:
The present invention discloses an apparatus for running and setting a liner hanger in a well bore casing. The usual liner hanger comprises two movable tubular members and a gripping means which is activated by relative movement of said members. The running and setting tool of this invention is connected to each of the tubular members of the hanger by selectively releasable means and includes a pressure responsive piston and cylinder assembly which transmits relative movement to the tubular members and thereby sets the gripping means. Coacting means on the running and setting tool and on the liner hanger prevents premature setting of the gripping means prior to piston and cylinder movement. After setting the hanger, the tool and its operating parts including the piston and cylinder assembly are removed from the well.

REFERENCES:
patent: 3608634 (1971-09-01), Cochran
patent: 4096913 (1978-06-01), Kenneday et al.

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