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Javidi Sofiani, Mahyar | 2009

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 39919 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Ramezani Saadat, Ahmad
  7. Abstract:
  8. Polymer flooding can yield considerable increase in percentage recovery. However, there are limitations with the existing polymer flooding technology, such as thermal, mechanical, bacterial degradation, surface absorption and undesirable plugging. A novel nanocore shell structure of polyacrylamide and polystyrene designed and prepared to intellectually control mobility ratio in oil reservoirs and overcome weakness and limitations of classical polymer flooding. Polyacrylamide particles have been obtained using spray drying of dilute solution of polyacrylamide. Then, polystyrene shell has been produced on polyacryamide particles by in-situ polymerization of styrene monomer in hydrophobic media. These particles can release polyacrilamide in oil water interface where the flooding water should have its maximum viscosity. Morphological, chemical, thermal properties of produced composite particles were investigated using scanning electron microscopy (SEM) images, infrared (IR) spectroscopy, and differential scanning calorimetry (DSC), respectively. These results reveal a core shell structure for produced particles with considerable interaction of two polymers. Release ability of system in oil water mixture is investigated at high temperature. Obtained results show that this system has necessary potential for carrying polyacrylamide at oil water interface and releasing it in front water
  9. Keywords:
  10. Polymer Flooding ; Coating ; Polystyrene ; Polyacrylamid

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