Method for reducing the permeability of subterranean formations

Details Method for reducing the permeability of subterranean formations Method for reducing the permeability of subterranean formations

1975-09-11

1978-10-17

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166270, 166295, 166305R, E21B 33138, E21B 4322, E21B 4325

Patent

active

041203615

ABSTRACT:
A method for reducing the quantity of water produced from a well bore-penetrated subterranean formation and for increasing the production rate of fluid hydrocarbons produced from said formation. Said method comprises injecting into said formation an aqueous solution of a partially hydrolyzed polyacrylamide, and contacting said polyacrylamide in situ with an aqueous solution containing divalent and/or trivalent metal cations.

REFERENCES:
patent: 3306870 (1967-02-01), Eilers et al.
patent: 3308885 (1967-03-01), Sandiford
patent: 3396790 (1968-08-01), Eaton
patent: 3658129 (1972-04-01), Lanning et al.
patent: 3687200 (1972-08-01), Routson
patent: 3741307 (1973-06-01), Sandiford et al.
patent: 3757863 (1973-09-01), Clampitt
patent: 3762476 (1973-10-01), Gall

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