Reducing permeability of highly permeable zones in underground f

Details Reducing permeability of highly permeable zones in underground f Reducing permeability of highly permeable zones in underground f

1987-06-01

1988-09-27

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166295, 166300, 523130, E21B 33138

Patent

active

047734817

ABSTRACT:
High permeability zones in subterranean formations are reduced in permeability by the gelation of water soluble polymers of polyalkylenimines, polyalkylenepolyamines and mixtures thereof is such formations with nonionic polymers which are hydrolyzable to anionic polymers which are capable of cross-linking with and gelling said water soluble polymers.

REFERENCES:
patent: 3491049 (1970-01-01), Gibson et al.
patent: 3762476 (1973-10-01), Gall
patent: 3799262 (1974-03-01), Knight
patent: 3805893 (1974-04-01), Sarem
patent: 3857443 (1974-12-01), Cole
patent: 3949811 (1976-04-01), Threlkeld et al.
Chemical Abstracts, vol. 77, 1972, p. 63, Abstract No. 153422D, Zweigle, Maurice Laverne, "Acrylamide Polymer Gel Compositions".

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