Fishing tool energizer and polymer energy storage element embodi

Details Fishing tool energizer and polymer energy storage element embodi Fishing tool energizer and polymer energy storage element embodi

1975-06-19

1976-09-14

Leppink, James A.

Boring or penetrating the earth

Below-ground impact members

Resiliently biased

267141, E21B 110

Patent

active

039801462

ABSTRACT:
A deep well elastic-tensile energy storage tool provided for incorporation in a drill string just above a fishing tool assembly, the latter embracing a fishing tool for directly engaging the fish, a conventional jar and one or more drill collars in the order named; said energy storage tool incorporating a cylindrical tubular column of molded polyurethane which is compressible axially one-twelfth its length to develop therein an internal reaction force of up to 125,000 pounds which is released by the jar for sudden application to the fish in a jarring operation.

REFERENCES:
patent: 3515382 (1973-06-01), Gallagher
patent: 3539026 (1970-11-01), Sutliff
patent: 3735828 (1973-05-01), Berryman
patent: 3750423 (1973-08-01), Williams

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