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ENHANCED OIL RECOVERY PROCESS USING WATER SOLUBLE POLYMERS HAVING IMPROVED SHEAR RESISTANCE

  • US 20130005616A1
  • Filed: 03/15/2010
  • Published: 01/03/2013
  • Est. Priority Date: 03/15/2010
  • Status: Abandoned Application
First Claim
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1. 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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