Isolation gravel packer

Details Isolation gravel packer Isolation gravel packer

1979-12-27

1981-10-20

Leppink, James A.

Wells

Processes

Graveling or filter forming

166 51, 166127, 166128, E21B 4304

Patent

active

042955246

ABSTRACT:
A method and apparatus for gravel packing a producing formation or zone in a well without inducing fluid movement across the zone being packed during reverse circulation. Packing and reverse circulation are effected without any movement of the tool string from the time packing is initiated. Bypass and dump valves are incorporated in the isolation gravel packer to facilitate movement of the tool string within the well bore before and after packing a zone.

REFERENCES:
patent: 3153451 (1964-10-01), Chancellor et al.
patent: 3455380 (1969-07-01), Salerni et al.
patent: 3627046 (1971-12-01), Miller
patent: 3637010 (1972-01-01), Maly et al.
patent: 3726343 (1973-04-01), Davis, Jr.
patent: 3850246 (1974-11-01), Despujols
patent: 3963076 (1976-06-01), Winslow
patent: 4044832 (1977-08-01), Richard et al.
patent: 4105069 (1978-08-01), Baker
patent: 4192375 (1980-03-01), Maly et al.

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