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Evaluation of functionalized polymeric surfactants for EOR applications in the Illinois Basin

Journal of Petroleum Science and Engineering, ISSN: 0920-4105, Vol: 134, Page: 167-175
2015
  • 48
    Citations
  • 0
    Usage
  • 84
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    48
    • Citation Indexes
      48
  • Captures
    84

Article Description

Molecular modification of water-soluble hydrolyzed polyacrylamide (HPAM) with surfactant-like monomers, known as the functionalized polymeric surfactant (FPS), can be an effective enhanced oil recovery (EOR) method. The FPS–EOR operation is very similar to the conventional polymer flooding (P-Flooding), in terms of the chemical use and field injection costs, but with a potential to further recover more than 5% of OOIP compared to the HPAM–EOR alone. Laboratory tests and a third party core-flood result show FPS can recover more oil than HPAM even at the lower injection pressure. Surfactant-like monomers linked to the FPS backbone improve the microscopic displacement efficiency of water-soluble polymer by pulling them towards the oil–water interface and creating an oil–water emulsion. Unlike the conventional surfactant+polymer (S+P) multi-component systems, single-component FPS–EOR injection has both the sweep efficiency (polymer feature) and the microscopic displacement efficiency (surfactant feature), but can mitigate incompatibility issues such as chromatography separation and surfactant–polymer interactions. Unlike a typical surfactant flooding for which the reduction of oil–water interfacial tension (IFT) to an ultralow level (<10 −3 dyne/cm) is required, a typical FPS solution only reduces IFT to a moderate level (∼10 −1 dyne/cm) at the polymer concentrations of 1000–3000 ppm.

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