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U.S. Department of Energy
Office of Scientific and Technical Information

Enhanced oil recovery methods and systems

Patent ·
OSTI ID:5737590
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.
Assignee:
Halliburton Co.
Patent Number(s):
US 4401789
OSTI ID:
5737590
Country of Publication:
United States
Language:
English