the thermal stability of polyacrylamides in eor in russia

the thermal stability of polyacrylamides in eor in russia
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  • What is a thermal stability evaluation of EOR polymers?
  • It is based on deep analysis of failures and successes in conducting thermal stability tests. The aim is to bring experimental inputs to draw new guidelines for the thermal stability evaluation of EOR polymers. The following items have been considered:
  • What are EOR polymers?
  • EOR polymers are high molecular weight partially hydrolyzed polyacrylamides. The degree of hydrolysis and the polymer chemistry must be selected carefully according to the brine composition to avoid any incompatibilities and prevent from precipitation with divalent cations.
  • How does polymer flooding improve oil recovery?
  • SPE Improved Oil Recovery Conference. Vol. SPE 190200. Summary Polymer flooding is the most successful EOR method consisting in increasing the viscosity of the aqueous phase injected in a reservoir to improve its efficiency to sweep the oil to producer wells.
  • Can polyacrylamide be modified with functional monomers?
  • Additionally, speeds of polymer degradation vary significantly, indicating that the modification of polyacrylamide with functional monomers is meaningful. As reported by Muller et al., polyacrylamides undergo hydrolysis under acidic conditions to yield poly (acrylamide-co-acrylic acid).