Phosphonate-containing polymers for controlling scale in undergr

Details Phosphonate-containing polymers for controlling scale in undergr Phosphonate-containing polymers for controlling scale in undergr

1991-10-07

1993-05-25

Hruskoci, Peter

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

166310, 166902, 210701, 252180, C02F 514

Patent

active

052136914

ABSTRACT:
A method of removing from and preventing scale from depositing in underground petroleum containing formations and upon equipment used to inject high brine scale forming waters into such formations which comprises treating such waters with a scale inhibiting amount of an acrylic acid polymer which contains from 0-95 mole percent of acrylamide and from 1-30 mole percent of amido C.sub.1 -C.sub.6 alkyl phosphonate groups from the group consisting of:

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patent: 4678840 (1987-07-01), Fong et al.
patent: 4710303 (1987-12-01), Emmons
patent: 4801388 (1989-01-01), Fong et al.
patent: 4937002 (1990-06-01), Bainbridge et al.
patent: 5023368 (1991-06-01), Leighton et al.

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