Advertisement

Study of CO2 molecular diffusion effect on the production of fractured reservoirs: The role of matrix porosity, and a new model for predicting the oil swelling factor

  • Houman DarvishEmail author
  • Nassim Hemmati
  • Ali Naghshgar
  • Amir Tabzar
Regular Article
  • 31 Downloads

Abstract.

The study of carbon dioxide injection into fractured reservoirs is of great importance, because carbon dioxide is the most effective greenhouse gas in the global warming phenomenon; moreover, being the residual oil in the matrix of fractured reservoirs is significant, with the injection of carbon dioxide into the fractured reservoirs, various mechanisms are involved which reduce the amount of residual oil, among which, the most important are: gravity drainage, molecular diffusion, oil swelling, viscosity reduction, evaporation and extraction. In the present study, we have two goals. The first one is the extension of previous studies of CO2 molecular diffusion effects on single block modeling of fractured reservoirs considering three porosities, 11%, 26% and 44%. For the porosity effect study, it is observed that, at a higher porosity, the viscosity decreases later, and the duration of viscosity reduction as well as increase in viscosity, or oil swelling and oil evaporation mechanism, is longer. Also, the higher the porosity of the matrix, the greater the effect of the molecular diffusion on the oil recovery. The second goal is to present a new model which calculates the oil swelling factor. In this regard, Fick’s second law is applied to a constant pressure diffusion cell considering the corresponding initial and boundary conditions. Then, taking into account the works by Kendall Marra et al. (1988), swelling model, by modifying the gridding and initial conditions, a new moving boundary swelling factor numerical model is presented. The model results are compared with measured experimental swelling factor data, which show good compatibility.

References

  1. 1.
    G.A. Florides, P. Christodoulides, Environ. Int. 35, 390 (2009)CrossRefGoogle Scholar
  2. 2.
    Y. Sugai, T. Babadagli, K. Sasaki, J. Petrol. Explor. Prod. Technol. 4, 105 (2014)CrossRefGoogle Scholar
  3. 3.
    J. Gong, W.R. Rossen, Fuel 184, 81 (2016)CrossRefGoogle Scholar
  4. 4.
    H. Karimaie, Aspects of water and gas injection in fractured reservoirs, PhD Thesis, Norwegian University of Science and Technology (2007)Google Scholar
  5. 5.
    M. Chordia, J. Trivedi, Diffusion in naturally fractured reservoirs: a review, in SPE Asia Oil & Gas Conference & Exhibition held in Brisbane, Queensland, Australia, 18–20 October, 2010 (SPE, 2010)Google Scholar
  6. 6.
    A.T. Grogan, V.W. Pinczewski, G.J. Ruskauff, F.M. Orr jr., SPE Reserv. Eng. 3, 93 (1988)CrossRefGoogle Scholar
  7. 7.
    F.V. Da Silva, P. Belery, Molecular diffusion in naturally fractured reservoirs: a decisive recovery mechanism, in SPE Annual Technical Conference and Exhibition, 1989 (SPE, 1989)Google Scholar
  8. 8.
    A. Kazemi, M. Jamialahmadi, The effect of oil and gas molecular diffusion in production of fractured reservoir during gravity drainage mechanism by CO_2 injection, in EUROPEC/EAGE Conference and Exhibition, 2009Google Scholar
  9. 9.
    H. Li, E. Putra, D.S. Schechter, R.B. Grigg, Experimental investigation of CO_2 gravity drainage in a fractured system, in 2000 SPE Asia Pacific Oil and Gas Conference and Exhibition, Brisbane, 16–18 October (SPE, 2000) paper SPE 64510Google Scholar
  10. 10.
    R. Nguele, K. Sasaki, M. Ghulami, Y. Sugai, M. Nakano, J. Petrol. Explor. Product. Technol. 6, 419 (2016)CrossRefGoogle Scholar
  11. 11.
    P.M. Jarrell, C.E. Fox, M.H. Stein, S.L. Webb, Practical aspects of CO_2 flooding, in SPE Monograph Series, Vol. 22 (SPE, Richardson, 2002)Google Scholar
  12. 12.
    G.R. Darvish, E. Lindeberg, T. Holt, S.A. Utne, Reservoir - condition laboratory experiments of CO_2 injection into fractured cores, SPE99650 (2006)Google Scholar
  13. 13.
    H. Karimaie, Aspects of water and gas injection in fractured reservoirs, PhD Thesis, Norwegian University of Science and Technology (2007)Google Scholar
  14. 14.
    M. Ghasemi, S. Alavian, C.H. Whitson, L. Sigalas, D. Olsen, V.S. Suicmez, High pressure tertiary-CO_2 flooding in a fractured chalk reservoir, in SPE Annual Technical Conference and Exhibition, 9–11 October, San Antonio, Texas, USA, 2017 (SPE, 2017)Google Scholar
  15. 15.
    R. Kendall Marra, F.H. Poettmann, R.S. Thompson, SPE Reserv. Eng. 3, 815 (1988)CrossRefGoogle Scholar
  16. 16.
    Ch. Yang, Y. Gu, Fluid Phase Equilib. 243, 64 (2006)CrossRefGoogle Scholar
  17. 17.
    J. Vali, E. Kazemzadeh, H. Bakhtiari, Geopersia 1, 39 (2011)Google Scholar
  18. 18.
    T.A. Renner, Measurement and correlation of diffusion coefficients for CO_2 and rich-gas applications (SPE, 1988)Google Scholar
  19. 19.
    E.A. Mason, A.P. Malinauskas, Gas Transport in Porous Media, the Dusty-Gas Model (1983) pp. 20--24Google Scholar
  20. 20.
    R.B. Bird, W.E. Stewart, E.N. Lightfoot, Transport Phenomena, 2nd edition (John Wiley & Sons, Hoboken, NJ, 2007)Google Scholar
  21. 21.
    J. Crank, Mathematics of Diffusion, 2nd edition (Clarendon Press, Oxford, 1975)Google Scholar
  22. 22.
    P.V. Krauzin, D.S. Goldobin, Eur. Phys. J. Plus 129, 221 (2014)CrossRefGoogle Scholar
  23. 23.
    H. Amedi, M.A. Ahmadi, Eur. Phys. J. Plus 131, 125 (2016)CrossRefGoogle Scholar
  24. 24.
    M.M. Khader, A.M. Megahed, Eur. Phys. J. Plus 129, 10 (2014)CrossRefGoogle Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Petroleum Engineering, Marvdasht BranchIslamic Azad UniversityMarvdashtIran
  2. 2.Department of Chemical and Petroleum EngineeringSharif University of TechnologyTehranIran
  3. 3.Department of Chemical and Petroleum EngineeringShiraz UniversityShirazIran

Personalised recommendations