ENHANCED OIL RECOVERY PROCESS USING WATER SOLUBLE POLYMERS HAVING IMPROVED SHEAR RESISTANCE
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United States of America Patent
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Issued Date -
Jan 3, 2013
app pub date -
Mar 15, 2010
filing date -
Mar 15, 2010
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Abandoned
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Abstract
An enhanced oil recovery process using high molecular weight water soluble polymer consisting in: —dispersing said polymer in injection brine, —and then injecting the dispersed polymer in the subterranean formation, characterized in that the high molecular weight water soluble polymer contains at least a non-ionic monomer and at least an amphiphilic monomer containing at least a side chain having an HLB above 4.5, said high molecular weight water soluble polymer having a molecular weight of more than 10 000 000.
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