PROCESS FOR ENHANCED OIL RECOVERY
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United States of America Patent
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Issued Date -
Aug 5, 2010
app pub date -
Sep 10, 2008
filing date -
Sep 11, 2007
priority date (Note) -
Abandoned
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Abstract
Method for enhanced oil recovery consisting in introducing into the injection water a solution containing at least one polymer and at least one surfactant, the surfactant/polymer weight ratio being between 1 and 10 and the surfactant concentration in the solution being higher than 100 ppm (parts per million), characterized in that the said polymer contains at least one hydrophobic cationic monomer.
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