Method and composition for delaying the gellation of borated gal

Details Method and composition for delaying the gellation of borated gal Method and composition for delaying the gellation of borated gal

1990-01-16

1992-01-21

Stoll, Robert L.

Compositions

Leather or fur treating

2523153, E21B 4326

Patent

active

050825798

ABSTRACT:
A complexor and method of use are shown for providing controlled delay of the cross-linking reaction in an aqueous well fracturing fluid. A base fluid is first prepared by blending together an aqueous fluid and a hydratable polymer which is capable of gelling in the presence of borate ions. The complexor is prepared by mixing a cross-linking additive capable of furnishing borate ions in solution with a delay additive, such as glyoxal. The delay additive is effective, within a selected pH range, to chemically bond with both boric acid and the borate ions produced by the cross-linking additive to theeby limit the number of borate ions initially available in solution for subsequent cross-linking of the hydratable polysaccharide. The subsequent rate of cross-linking of the polysaccharide can be controlled by adjusting the pH of the complexor solution.

REFERENCES:
patent: 2879268 (1959-03-01), Jullander
patent: 3527751 (1970-09-01), Gill
patent: 3898165 (1975-08-01), Ely et al.
patent: 3960736 (1976-06-01), Free et al.
patent: 3974077 (1976-08-01), Free
patent: 4040967 (1977-08-01), Nimerick et al.
patent: 4244826 (1991-01-01), Swanson
patent: 4336145 (1982-06-01), Briscoe
patent: 4350601 (1982-09-01), Mosier et al.
patent: 4371443 (1983-02-01), Keeney
patent: 4373959 (1983-02-01), Socha
patent: 4514309 (1985-04-01), Wadhwa
patent: 4579670 (1986-04-01), Payne
patent: 4619776 (1986-10-01), Mondshine

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