Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
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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Emmons Daniel H.
Fong Dodd W.
Kinsella Mary A.
Hruskoci Peter
Nalco Chemical Company
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