Enhanced oil recovery methods and systems
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United States of America Patent
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Aug 30, 1983
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N/A
app pub date -
Jul 14, 1981
filing date -
Jul 14, 1981
priority date (Note) -
Expired
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Abstract
Methods of preparing viscous aqueous polymer solutions having improved viscosity and stability properties for use in the treatment of subterranean hydrocarbon-containing formations and in enhanced oil recovery processes are provided. More particularly, a method of preparing such viscous aqueous polymer solution in a buffer system that contains a particular buffer and a substantially oxygen free aqueous solvent. Such solvent is used for pH control and contains one or more metal salts.
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