Soft set overshot fishing tool

Details Soft set overshot fishing tool Soft set overshot fishing tool

1992-05-08

1993-10-05

Melius, Terry Lee

Wells

Grapple and well anchored lifting means

166187, 294 8632, 2941193, E21B 3118

Patent

active

052496252

ABSTRACT:
A fluid operated overshot with an outer metal mandrel internally supports a resilient internal sleeve. The sleeve telescopes over a fish to grip the fish on expanding radially inwardly. This expansion is fluid powered by applying a force to the inner sleeve to expand inwardly from a piston which compresses the sleeve, or form surrounding the inner sleeve in a concentric fluid receiving cavity.

REFERENCES:
patent: 3542354 (1970-11-01), Fitzpatrick
patent: 4052861 (1977-10-01), Malone et al.
patent: 4989909 (1991-02-01), Bouligny, Jr. et al.

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