Method and apparatus for setting an inflatable packer

Details Method and apparatus for setting an inflatable packer Method and apparatus for setting an inflatable packer

1988-04-22

1989-06-20

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166181, 166187, E21B 2306

Patent

active

048402311

ABSTRACT:
A setting assembly tool suitable for suspension in a subterranean well by a wireline is provided for activating an inflatable packer. A downhole firing head with a combustion device is utilized for generating downhole a high fluid pressure in a passageway of the setting assembly tool, with the passageway being in fluid communication with the packer for setting the packer. In response to a pressure buildup of a predetermined level, fluid pressure is dumped from the passageway to the well while a check valve closes to retain the packer in the set position. To deactivate the retrievable packer, a conventional fishing tool supported by a wireless may be used to exert an axial force on a housing sufficient to move the housing relative to the packer and open a fluid port for discharging liquid from the packer. The setting assembly tool may be retrieved to the surface via the wireline immediately after the packer is set.

REFERENCES:
patent: 2681114 (1954-06-01), Conrad
patent: 2695065 (1954-11-01), Baker et al.
patent: 3138207 (1964-06-01), Peppers
patent: 3762470 (1973-10-01), Eggleston
patent: 3800876 (1974-04-01), Eggleston

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