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Abstract

Summary

Mutually-soluble solvents can enhance oil recovery both in completely and partially water wet fractured reservoirs. When a strongly or partially water-wet matrix is surrounded by an immiscible wetting phase in the fracture, spontaneous imbibition is the most important production mechanism. Initially, the solvent moves with the imbibing brine into the core. However, upon contact with oil, diffusion occurs and the solvent is transported in the oleic phase. Through the migration of the mutually soluble component from the aqueous phase into the oleic phase, oil properties and/or rock-fluid interactions are modified. The hypothesis in this work is that a mutually-soluble solvent improves the ultimate recovery and the imbibition rate in partially and completely water-wet cores. The main recovery mechanisms are the wettability change of the partially water-wet cores, oil swelling and oil viscosity reduction in both partially and completely water-wet cores.

This paper considers the numerical modelling of experiments that use Amott imbibition cells to study solvent enhanced spontaneous imbibition in completely water-wet and partially water-wet cores. In the first stage of the experiment, the completely water-wet core was exposed to brine. In a second stage, the core was put in another Amott cell that was filled with a solvent/ brine mixture. The extra recovery by a solvent/brine mixture strongly depends on the residual oil saturation after brine imbibition and it is relatively insensitive to the permeability of the core or the oil viscosity. We implemented the swelling mechanism, the oil viscosity reduction mechanism, and the IFT reduction mechanism in the numerical model. Our studies show that the most important production mechanism in the completely water wet system is the oil swelling and the second most important mechansism is the oil viscosity reduction. The effect of the IFT reduction in the oil production is not significant. The numerical results show an improvement of 10%.

For the partially water-wet samples, we also started with exposing the core to pure brine without solvent. Contrary to the completely water-wet samples, the numerical results show a significant increase in recovery rate when the sample is transferred to another Amott cell where it is exposed to a mixture of solvent and brine. The main modification in simulating the recovery process is that now a wettability change mechanism is taken into account. Our numerical studies show that the contribution of the wettability change is the main contributor to the oil recovery, which is enhanced by 35 %.

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2014-09-08
2024-04-24

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References

  1. Babadagli, T.
    [1996] Temperature effect on heavy-oil recovery by imbibition in fractured reservoirs. Journal of Petroleum Science and Engineering, 14(3–4), 197–208, ISSN 09204105, doi:10.1016/0920‑4105(95)00049‑6.
     https://doi.org/10.1016/0920-4105(95)00049-6 [Google Scholar]
  2. [2001] Scaling of Cocurrent and Countercurrent Capillary Imbibition for Surfactant and Polymer Injection in Naturally Fractured Reservoirs. SPE Journal, 6(4), 19–23, ISSN 1086-055X, doi:10.2118/74702‑PA.
     https://doi.org/10.2118/74702-PA [Google Scholar]
  3. Barenblatt, G., Patzek, T. and Silin, D.
    [2002] The Mathematical Model of Non-Equilibrium Effects in Water-Oil Displacement. Proceedings of SPE/DOE Improved Oil Recovery Symposium, December, Society of Petroleum Engineers, ISBN 9781555639518, 409–416, doi:10.2118/75169‑MS.
     https://doi.org/10.2118/75169-MS [Google Scholar]
  4. Bourbiaux, B. and Kalaydjian, F.
    [1990] Experimental Study of Cocurrent and Countercurrent Flows in Natural Porous Media. SPE Reservoir Engineering, 5(3), 361–368, ISSN 0885-9248, doi:10.2118/18283‑PA.
     https://doi.org/10.2118/18283-PA [Google Scholar]
  5. Chahardowli, M., Zholdybayeva, A., Farajzadeh, R. and Bruining, H.
    [2013] Solvent-enhanced Spontaneous Imbibition in Fractured Reservoirs. Proceedings of 75th EAGE Conference & Exhibition incorporating SPE EUROPEC 2013, Society of Petroleum Engineers, ISBN 9781613992548, doi:10.2118/164908‑MS.
     https://doi.org/10.2118/164908-MS [Google Scholar]
  6. Derakhshanfar, M., Nasehi, M. and Asghari, K.
    [2012] Simulation Study of CO2-Assisted Waterflooding for Enhanced Heavy Oil Recovery and Geological Storage. Proceedings of Carbon Management Technology Conference, Society of Petroleum Engineers, Orlando, Florida, USA, ISBN 9781613991794, doi:10.7122/151183‑MS.
     https://doi.org/10.7122/151183-MS [Google Scholar]
  7. Dong, Y., Dindoruk, B., Ishizawa, C., Lewis, E. and Kubicek, T.
    [2011] An Experimental Investigation of Carbonated Water Flooding. Proceedings of SPE Annual Technical Conference and Exhibition, Society of Petroleum Engineers, Denver, Colorado, USA, ISBN 9781613991473, doi:10.2118/145380‑MS.
     https://doi.org/10.2118/145380-MS [Google Scholar]
  8. Farouq Ali, S. and Thomas, S.
    [2000] Enhanced Oil Recovery - What We Have Learned. Journal of Canadian Petroleum Technology, 39(2), ISSN 0021-9487, doi:10.2118/00‑02‑DAS.
     https://doi.org/10.2118/00-02-DAS [Google Scholar]
  9. Ghedan, S. and Poettmann, F.
    [1991] Effect of Polymers on the Imbibition Process: A Laboratory Study. SPE Reservoir Engineering, 6(1), 84–90, ISSN 0885-9248, doi:10.2118/20244‑PA.
     https://doi.org/10.2118/20244-PA [Google Scholar]
  10. Holm, L. and Csaszar, A.
    [1962] Oil Recovery by Solvents Mutually Soluble in Oil and Water. Society of Petroleum Engineers Journal, 2(2), ISSN 0197-7520, doi:10.2118/117‑PA.
     https://doi.org/10.2118/117-PA [Google Scholar]
  11. Kazemi, H., Gilman, J. and Elsharkawy, A.
    [1992] Analytical and Numerical Solution of Oil Recovery From Fractured Reservoirs With Empirical Transfer Functions (includes associated papers 25528 and 25818). SPE Reservoir Engineering, 7(2), ISSN 0885-9248, doi:10.2118/19849‑PA.
     https://doi.org/10.2118/19849-PA [Google Scholar]
  12. Keijzer, P.P.M. and Vries, A.S.D.
    [1990] Imbibition of Surfactant Solutions. SPE Advanced Technology Series, I(2), 110–113, doi:10.2118/20222‑PA.
     https://doi.org/10.2118/20222-PA [Google Scholar]
  13. Kewen, L., Kevin, C. and Horne, R.
    [2002] Effect of Initial Water Saturation on Spontaneous Water Imbibition. Proceedings of SPE Western Regional/AAPG Pacific Section Joint Meeting, Society of Petroleum Engineers, Anchorage, Alaska, USA, doi:10.2523/76727‑MS.
     https://doi.org/10.2523/76727-MS [Google Scholar]
  14. Klins, M.
    [1984] Carbon dioxide flooding: Basic mechanisms and project design. Springer, ist editio edn., ISBN 9780934634441.
     [Google Scholar]
  15. Lake, L.
    [????] 1st edn., ISBN 9780132816014.
  16. Leo, A., Hansch, C. and Elkins, D.
    [1971] Partition coefficients and their uses. Chem. Rev., 71(6).
     [Google Scholar]
  17. Li, K., Chow, K. and Horne, R.
    [2006] Influence of Initial Water Saturation on Recovery by Spontaneous Imbibition in Gas/Water/Rock Systems and the Calculation of Relative Permeability. SPE Reservoir Evaluation & Engineering, 9(4), 295–301, ISSN 1094-6470, doi:10.2118/99329‑PA.
     https://doi.org/10.2118/99329-PA [Google Scholar]
  18. Ma, S., Morrow, N. and Zhang, X.
    [1995] Generalized Scaling Of Spontaneous Imbibition Data For Strongly Water-Wet Systems. Proceedings of Technical Meeting /Petroleum Conference Of The South Saskatchewan Section, Society of Petroleum Engineers, ISBN 9781613990988, doi:10.2118/95‑138.
     https://doi.org/10.2118/95-138 [Google Scholar]
  19. Manrique, E.J., Muci, V.E., Gurfinkel, M.E. et al.
    [2007] Eor field experiences in carbonate reservoirs in the united states. SPE Reservoir Evaluation & Engineering, 10(06), 667–686.
     [Google Scholar]
  20. Mattax, C. and Kyte, J.
    [1962] Imbibition oil recovery from fractured, water-drive reservoir. Old SPE Journal, 2, 177–184, doi:10.2118/187‑PA.
     https://doi.org/10.2118/187-PA [Google Scholar]
  21. Morrow, N.R. and Mason, G.
    [2001] Recovery of oil by spontaneous imbibition. Current Opinion in Colloid & Interface Science, 6(4), 321–337, ISSN 13590294, doi:10.1016/S1359‑0294(01)00100‑5.
     https://doi.org/10.1016/S1359-0294(01)00100-5 [Google Scholar]
  22. Plug, W. and Bruining, J.
    [2007] Capillary pressure for the sandâĂŞCO 2âĂŞwater system under various pressure conditions. Application to CO 2 sequestration. Advances in Water Resources, 30(11), 2339–2353, ISSN 03091708, doi:10.1016/j.advwatres.2007.05.01.
     https://doi.org/10.1016/j.advwatres.2007.05.01 [Google Scholar]
  23. Riazi, M., Jamiolahmady, M. and Sohrabi, M.
    [2011] Theoretical investigation of pore-scale mechanisms of carbonated water injection. Journal of Petroleum Science and Engineering, 75(3–4), 312–326, ISSN 09204105, doi:10.1016/j.petrol.2010.11.027.
     https://doi.org/10.1016/j.petrol.2010.11.027 [Google Scholar]
  24. Saidi, A.
    [1983] Simulation of Naturally Fractured Reservoirs. Proceedings of SPE Reservoir Simulation Symposium, Society of Petroleum Engineers, San Francisco, California, USA, vol. v, ISBN 9781555636494, doi:10.2118/12270‑MS.
     https://doi.org/10.2118/12270-MS [Google Scholar]
  25. Salimi, H. and Bruining, J.
    [2011] The Influence of Heterogeneity, Wetting, and Viscosity Ratio on Oil Recovery From Vertically Fractured Reservoirs. SPE Journal, 16(2), ISSN 1086-055X, doi:10.2118/140152‑PA.
     https://doi.org/10.2118/140152-PA [Google Scholar]
  26. [2011] Upscaling of fractured oil reservoirs using homogenization including non-equilibrium capillary pressure and relative permeability. Computational Geosciences, 16(2), 367–389, ISSN 1420-0597, doi:10.1007/s10596‑011‑9266‑y.
     https://doi.org/10.1007/s10596-011-9266-y [Google Scholar]
  27. Schechter, D., Zhou, D. and Orr, F.
    [1994] Low IFT drainage and imbibition. Journal of Petroleum Science and Engineering, 11(4), 283–300, ISSN 09204105, doi:10.1016/0920‑4105(94)90047‑7.
     https://doi.org/10.1016/0920-4105(94)90047-7 [Google Scholar]
  28. [1991] Capillary Imbibition and Gravity Segregation in Low IFT Systems. Proceedings of SPE Annual Technical Conference and Exhibition, 1, Society of Petroleum Engineers, Dallas, Texas, USA, doi:10.2523/22594‑MS.
     https://doi.org/10.2523/22594-MS [Google Scholar]
  29. Shenawi, S. and Wu, C.
    [1994] Compositional Simulation of Carbonated Waterfloods in Naturally Fractured Reservoirs. Proceedings of SPE/DOE Improved Oil Recovery Symposium, Society of Petroleum Engineers, Tulsa, Oklahoma, ISBN 9781555634711, doi:10.2118/27741‑MS.
     https://doi.org/10.2118/27741-MS [Google Scholar]
  30. Simon, R. and Graue, D.
    [1965] Generalized Correlations for Predicting Solubility, Swelling and Viscosity Behavior of CO2 -Crude Oil Systems. Journal of Petroleum Technology, 17(1), ISSN 0149-2136, doi:10.2118/917‑PA.
     https://doi.org/10.2118/917-PA [Google Scholar]
  31. Torsaeter, O.
    [1984] An Experimental Study of Water Imbibition in Chalk From the Ekofisk Field. Proceedings of SPE Enhanced Oil Recovery Symposium, Society of Petroleum Engineers, Tulsa, Oklahoma, USA, ISBN 9781555636425, doi:10.2118/12688‑MS.
     https://doi.org/10.2118/12688-MS [Google Scholar]
  32. Warren, J. and Root, P.
    [1963] The Behavior of Naturally Fractured Reservoirs. Society of Petroleum Engineers Journal, 3(3), 245–255, ISSN 0197-7520, doi:10.2118/426‑PA.
     https://doi.org/10.2118/426-PA [Google Scholar]
  33. Wilke, C. and Chang, P.
    [1955] Correlation of diffusion coefficients in dilute solutions. AIChE Journal, 1(2), 264–270.
     [Google Scholar]
  34. Zhou, X., Morrow, N. and Ma, S.
    [2000] Interrelationship of Wettability, Initial Water Saturation, Aging Time, and Oil Recovery by Spontaneous Imbibition and Waterflooding. SPE Journal, 5(2), 21–24, ISSN 1086-055X, doi:10.2118/62507‑PA.
     https://doi.org/10.2118/62507-PA [Google Scholar]
  35. Zhou, X., Torsaeter, O., Xie, X. and Morrow, N.
    [1995] The Effect of Crude-Oil Aging Time and Temperature on the Rate of Water Imbibition and Long-Term Recovery by Imbibition. SPE Formation Evaluation, 10(4), 259-265, ISSN 0885-923X, doi:10.2118/26674‑PA.
     https://doi.org/10.2118/26674-PA [Google Scholar]
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Numerical Simulation of Mutually Soluble Solvent-aided Spontaneous Imbibition in Fractured Reservoirs
Conference Proceedings 2014, 1 (2014); https://doi.org/10.3997/2214-4609.20141854
/content/papers/10.3997/2214-4609.20141854
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