Method of treating formations

Details Method of treating formations Method of treating formations

1993-06-02

1994-12-06

Suchfield, George A.

Wells

Processes

Graveling or filter forming

166300, E21B 4304

Patent

active

053701844

ABSTRACT:
Granules containing a gel breaker are used in a well treatment involving the use of a gelled fluid. The granules exhibit delayed release of the breaker to permit placement of the gelled fluid into the subterranean formation. The method of the present invention is used in gravel packing operation to degrade polymeric gelling agents used in the gravel packing liquid.

REFERENCES:
patent: 3030215 (1962-04-01), Veatch et al.
patent: 3163219 (1964-12-01), Wyant et al.
patent: 4202795 (1980-05-01), Burnham et al.
patent: 4220566 (1980-09-01), Constien et al.
patent: 4506734 (1985-03-01), Nolte
patent: 4610795 (1986-09-01), Norris et al.
patent: 4738897 (1988-04-01), McDougall et al.
patent: 5054552 (1991-10-01), Hall et al.
patent: 5110486 (1992-05-01), Manalastas et al.

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