Method and apparatus for releasing a well perforating gun from a

Details Method and apparatus for releasing a well perforating gun from a Method and apparatus for releasing a well perforating gun from a

1987-11-30

1989-03-28

Suchfield, George A.

Wells

Processes

Disassembling well part

166 55, 166297, 175 456, E21B 2304, E21B 4316

Patent

active

048155403

ABSTRACT:
A perforating gun is latchably secured to the bottom end of a tubular support which in turn is connected to the bottom of a well tubing string. After the gun has been discharged, it may be released from the tubing string by dropping a ball on an upwardly facing seating surface provided on the top portions of the perforating gun assemblage and then increasing the tubing string pressure to a predetermined level which effects the release of the latching mechanism and drops the perforating gun assembly to the bottom of the well.

REFERENCES:
patent: 3842914 (1974-10-01), Mott
patent: 3997006 (1976-12-01), Wetzel
patent: 4526233 (1985-07-01), Stout
patent: 4540051 (1985-09-01), Schmuck et al.
patent: 4541486 (1985-09-01), Wetzel et al.
patent: 4557331 (1985-12-01), Stout
patent: 4576236 (1986-03-01), Stout et al.
patent: 4694878 (1987-09-01), Gambertoglio

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