Method of increasing the yield of hydrocarbons from a subterranean formation
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United States of America Patent
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Apr 2, 1985
Grant Date -
N/A
app pub date -
Jan 27, 1983
filing date -
Jan 27, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Heavy crude oil is recovered from a subterranean formation by a process comprising (a) heating said formation, and (b) subsequently flooding the formation with a cold aqueous solution containing a polymer additive which increases its viscosity.
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