Phosphinate-containing polymers for controlling scale in undergr

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

1991-10-07

1992-12-01

Hruskoci, Peter

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

166310, 166902, 252 8552, 252 82, 252180, 210747, C02F 514

Patent

active

051678284

ABSTRACT:
A method of preventing scale from depositing in underground petroleum-containing formations and upon equipment used to inject into or remove from such formations high brine, scale-forming waters. This method comprises treating such waters with a scale-inhibiting amount of an acrylic acid or acrylamide homopolymer or co-polymer of acrylic acid with acrylamide having a molecular weight within the range of 1,000-50,000 which have been modified to contain up to about 30 mole percent of amido(C.sub.2 -C.sub.6 alkyl)phosphinic acid groups and the alkali metal, ammonium and amine salts thereof.

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