Well perforator isolation apparatus and method

Details Well perforator isolation apparatus and method Well perforator isolation apparatus and method

1996-02-05

1997-12-30

Tsay, Frank

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

166 551, E21B 4311

Patent

active

057019576

ABSTRACT:
Disclosed is an improved apparatus and method for performing downhole operations to a subterranean formation while isolating the formation from the remainder of the well bore. The invention utilizes a tool assembly which initially sets a packer above the formation while allowing a downhole tool to extend through a passageway in the packer to perform operations such as perforating the formation. The assembly permits retrieval of the tools through the passageway in the packer while sealing off the formation from the remainder of the well.

REFERENCES:
patent: 3589453 (1971-06-01), Venghiattis
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patent: 4512418 (1985-04-01), Regalbuto et al.
patent: 4564076 (1986-01-01), Vann et al.
patent: 4605074 (1986-08-01), Barfield
patent: 4637468 (1987-01-01), Derrick
patent: 4656944 (1987-04-01), Gonzalez
patent: 4756371 (1988-07-01), Brieger
patent: 5329999 (1994-07-01), White et al.

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