Scale inhibitor and process for using

Details Scale inhibitor and process for using Scale inhibitor and process for using

1993-06-29

1994-11-01

Suchfield, George A.

Wells

Processes

With indicating, testing, measuring or locating

166279, 166310, 166371, 210698, 210701, 252 8552, E21B 4700, E21B 3706, C02F 510

Patent

active

053600657

ABSTRACT:
A copolymer of sodium vinyl sulfonate and polyalkylene glycol mono- or di-methacrylate and a process for inhibiting scale deposition, particularly inorganic sulfate such as barium sulfate. An aqueous fluid present in or produced from a subterranean formation is contacted with an aqueous solution having the copolymer dissolved therein. The aqueous fluid has an acidic pH and the copolymer has a molecular weight of from about 2,000 to about 30,000.

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