Downhole fishing tool

Details Downhole fishing tool Downhole fishing tool

1992-03-23

1993-11-30

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Well type

294 8618, 294 862, 294 8626, E21B 3118

Patent

active

052659275

ABSTRACT:
A sucker rod coupling retrieval tool which includes a cylindrical slip bowl having an axially offset cylindrical bore in one end. The opposite end is threaded onto the lower end of a top sub which defines an internal bore receiving an annular bearing. A slip guide carrying a toothed spacer is slidably positioned in the slip bowl below the bearing. The slip guide has an axially offset cylindrical external surface which receives the upper portion of the internal offset cylindrical surface of a tubular slip and guides the slip in relative rotating movement within the slip bowl during operation of the tool. Teeth on the lower end of the spacer function to engage the upper end of the coupling to be retrieved which is also circumferentially gripped by rotating the slip bowl relative to the slip after extending both downwardly over the coupling.

REFERENCES:
patent: 1634935 (1927-07-01), Donnelly
patent: 1745274 (1930-01-01), Sauls
patent: 1754696 (1930-04-01), Sauls
patent: 1787834 (1931-01-01), O'Bannon
patent: 1797505 (1931-03-01), Jones et al.
patent: 1828938 (1931-10-01), O'Bannon
patent: 2114988 (1938-04-01), Anthony
patent: 2123036 (1938-07-01), Bozeman
patent: 2272529 (1942-02-01), Larson
patent: 2275911 (1942-03-01), Le Bus
patent: 2814523 (1957-11-01), Stohn
patent: 3851987 (1974-12-01), Jones
patent: 3854768 (1974-12-01), King, Sr.
patent: 4548437 (1985-10-01), Driskill
patent: 4945985 (1990-08-01), Lynds

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