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Enhanced Oil Recovery (EOR) by Miscible CO 2 and Water Flooding of Asphaltenic and Non-Asphaltenic Oils

Author

Listed:
  • Edwin A. Chukwudeme

    (Department of Petroleum Engineering, University of Stavanger, 4036 Stavanger, Norway)

  • Aly A. Hamouda

    (Department of Petroleum Engineering, University of Stavanger, 4036 Stavanger, Norway)

Abstract

An EOR study has been performed applying miscible CO 2 flooding and compared with that for water flooding. Three different oils are used, reference oil ( n -decane), model oil ( n -C10, SA, toluene and 0.35 wt % asphaltene) and crude oil (10 wt % asphaltene) obtained from the Middle East. Stearic acid (SA) is added representing a natural surfactant in oil. For the non-asphaltenic oil, miscible CO 2 flooding is shown to be more favourable than that by water. However, it is interesting to see that for first years after the start of the injection ( 2 , after which (> 3 years) oil recovery by gas injection showed a significant increase. This may be due to the enhanced performance at the increased reservoir pressure during the first period. Maximum oil recovery is shown by miscible CO 2 flooding of asphaltenic oil at combined temperatures and pressures of 50 °C/90 bar and 70 °C/120 bar (no significant difference between the two cases, about 1%) compared to 80 °C/140 bar. This may support the positive influence of the high combined temperatures and pressures for the miscible CO 2 flooding; however beyond a certain limit the oil recovery declined due to increased asphaltene deposition. Another interesting finding in this work is that for single phase oil, an almost linear relationship is observed between the pressure drop and the asphaltene deposition regardless of the flowing fluid pressure.

Suggested Citation

  • Edwin A. Chukwudeme & Aly A. Hamouda, 2009. "Enhanced Oil Recovery (EOR) by Miscible CO 2 and Water Flooding of Asphaltenic and Non-Asphaltenic Oils," Energies, MDPI, vol. 2(3), pages 1-24, September.
    • Handle: RePEc:gam:jeners:v:2:y:2009:i:3:p:714-737:d:5661
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    Citations

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    Cited by:

    1. Dmitrii Pereponov & Michael Tarkhov & Desmond Batsa Dorhjie & Alexander Rykov & Ivan Filippov & Elena Zenova & Vladislav Krutko & Alexey Cheremisin & Evgeny Shilov, 2023. "Microfluidic Studies on Minimum Miscibility Pressure for n-Decane and CO 2," Energies, MDPI, vol. 16(13), pages 1-21, June.
    2. Evgeny Shilov & Alexey Cheremisin & Kirill Maksakov & Sergey Kharlanov, 2019. "Huff-n-Puff Experimental Studies of CO 2 with Heavy Oil," Energies, MDPI, vol. 12(22), pages 1-15, November.
    3. Omid Mosalman Haghighi & Ghasem Zargar & Abbas Khaksar Manshad & Muhammad Ali & Mohammad Ali Takassi & Jagar A. Ali & Alireza Keshavarz, 2020. "Effect of Environment-Friendly Non-Ionic Surfactant on Interfacial Tension Reduction and Wettability Alteration; Implications for Enhanced Oil Recovery," Energies, MDPI, vol. 13(15), pages 1-18, August.
    4. Vahid Tabrizy & Aly Hamouda, 2014. "Evaluation of Asphaltene Stability During CO2 Flooding at Different Miscible Conditions and Presence of Light Components," Energy and Environment Research, Canadian Center of Science and Education, vol. 4(1), pages 1-32, June.
    5. Muhammad Shahzad Kamal, 2019. "A Novel Approach to Stabilize Foam Using Fluorinated Surfactants," Energies, MDPI, vol. 12(6), pages 1-12, March.

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