Combination tubing cutter and releasing overshot

Details Combination tubing cutter and releasing overshot Combination tubing cutter and releasing overshot

1988-11-17

1989-11-28

Massie, Jerome W.

Wells

Means for perforating, weakening, bending or separating pipe...

Perforating or splitting cutter

166 98, 294 8626, 294 863, 294 8634, E21B 3116, E21B 3118

Patent

active

048831182

ABSTRACT:
A mechanical tubing cutter for severing and retrieving fish from wells comprises a slip body for clamping the upper end of the fish, and cam-actuated cutter knives for severing the fish below the slip body. The clamping and cutting operations occur in an automatic and predictable sequence as upward force is progressively applied to the tool. The tool may be used as a releasing overshot merely by substituting a slip body setting sleeve for the cutter knives.

REFERENCES:
patent: 1015432 (1912-01-01), Frederickson
patent: 1471775 (1923-10-01), Brown
patent: 1747513 (1930-02-01), Kammerdiner
patent: 1790783 (1931-02-01), Yungling
patent: 1813368 (1931-07-01), Toles
patent: 2277580 (1942-03-01), Carothers
patent: 2304793 (1942-12-01), Bodine, Jr.
patent: 2934147 (1960-04-01), Baker
patent: 3174548 (1965-03-01), Webb

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