Enhanced oil recovery methods and systems
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United States of America Patent
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Jul 26, 1983
Grant Date -
N/A
app pub date -
Jul 14, 1981
filing date -
Jul 14, 1981
priority date (Note) -
Expired
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Abstract
A method of enhanced oil recovery from subterranean oil-containing formations via injection through an injection well penetrating the formation of a viscous aqueous solution containing one or more water-soluble organic polymers and forcing such solution through the formation towards a production well for ultimate recovery. The viscous aqueous polymer solutions of the invention are prepared at the site of their use by polymerizing one or more water-soluble polymerizable vinyl monomers in aqueous solutions which may contain high concentrations of one or more salts.
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