Oil-field wireline fishing tool

Details Oil-field wireline fishing tool Oil-field wireline fishing tool

1990-04-16

1992-04-21

Focarino, Margaret A.

Handling: hand and hoist-line implements

Grapple

Well type

294 861, 294 8626, E21B 3100

Patent

active

051061406

ABSTRACT:
The present invention is an oilfield wireline fishing tool with expansible wings. The wings open up in umbrella fashion after leaving production tubing allowing the fishing tool to cover the entire diameter of the well casing. Upon reentry into tubing the wings compress enabling the fishing tool and lost tool to be pulled to the surface. The wings are secured to the tool by leaf springs. A collar is placed over the leaf springs at the down-hole end of the tool in order to secure the leaf springs to the tool. This design allows the tool to be constructed with a diameter small enough to fit through production tubing. The uphole end is suited for attachment to a wireline bridle.

REFERENCES:
patent: 750491 (1904-01-01), Sargert
patent: 868809 (1907-10-01), Rathbone
patent: 1148495 (1915-08-01), Birdseye
patent: 1494880 (1924-05-01), Ausbrooks
patent: 1509001 (1924-09-01), Smith
patent: 1528145 (1925-03-01), Davidson
patent: 2236761 (1938-09-01), Nichols
patent: 2621067 (1952-12-01), Jacobson
patent: 2853335 (1958-09-01), Mogle
patent: 4515212 (1985-05-01), Krugh
patent: 4545432 (1985-10-01), Appleton
patent: 4603739 (1986-08-01), Krugh

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