Gel formation by polymer crosslinking

Details Gel formation by polymer crosslinking Gel formation by polymer crosslinking

1975-11-06

1977-08-09

Guynn, Herbert B.

Wells

Processes

Cementing, plugging or consolidating

106194, 106208, 166270, 166295, 252316, 260 296H, 260DIG14, E21B 33138

Patent

active

040404846

ABSTRACT:
A composition of matter comprising water, a polymer capable of being crosslinked by polyvalent metal cations, a reducible species containing said polyvalent metal in a higher oxidation state, and a reducing agent selected from among KI, MnCl.sub.2, Mn(NO.sub.3).sub.2, and K.sub.4 Fe(CN).sub.6 which composition is capable of forming a gel by crosslinking is provided. A method is also provided for in situ gel formation using this crosslinking composition. In one of its embodiments a method is provided for increasing the rate of gel formation by the addition of H+ ion.

REFERENCES:
patent: 3301723 (1967-01-01), Chrisp
patent: 3502149 (1970-03-01), Pence
patent: 3554287 (1971-01-01), Eilers
patent: 3727687 (1973-04-01), Clampitt et al.
patent: 3749172 (1973-07-01), Hessert et al.
patent: 3785437 (1974-01-01), Clampitt et al.
patent: 3908760 (1975-09-01), Clampitt et al.
patent: 3921733 (1975-11-01), Clampitt
patent: 3926258 (1975-12-01), Hessert et al.

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