Simultaneous Occurrence of Miscible and Immiscible Displacement Processes During Solvent Displacement of Heavy Oil: A Parametric Analysis Using Visual Capillary-Tube Experiments
- Yu Shi (University of Alberta) | Tayfun Babadagli (University of Alberta)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- August 2019
- Document Type
- Journal Paper
- 1,630 - 1,644
- 2019.Society of Petroleum Engineers
- visual experiments, interface between miscible fluids, miscibility, capillary imbibition and diffusion, capillary tubes
- 19 in the last 30 days
- 59 since 2007
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Oil/solvent mixing is essential during solvent-injection applications to reduce the viscosity of oil, but mass transfer by diffusion becomes slower because the oil becomes heavier. Thus, an interface exists between the oil and solvent at certain times, being stronger in the beginning of the process. This results in an immiscible displacement controlled by the capillary forces while mixing is in progress. It is of practical and fundamental importance to determine the mechanisms responsible for the displacement of heavy oil and the behavior of solvents (acting as both immiscible and miscible displacement agents) because it could be advantageous to accelerate the dilution of heavy oil in many circumstances, including heterogeneous (fractured, layered, wormholed) systems. This is a complex process consisting of multiple pore phases (oil, solvent, their mixtures, and aqueous and vapor phases) at the same time, while different mechanisms such as capillary imbibition, miscible interaction (diffusion and convection), and gravity also act simultaneously.
To investigate this complex phenomenon for different oil/solvent systems, a novel experimental method was used. The underlying mechanisms that dominate the solvent displacement process were comprehensively identified. The movement and evolution of interfaces among different fluid phases in glass capillary tubes were observed and recorded. Oil samples with different viscosities were used to examine the effects of oil viscosity on the mass transfer accelerated by imbibition transfer. The effects of temperature, wettability, and boundary conditions on the interaction of miscible fluid pairs were also studied. Pentane, heptane, and decane were used as the solvent phases. Advanced photographic techniques using ultraviolet (UV) light and dyed fluids were applied to better track the flow of different phases in the mixing zone.
The experiments demonstrated a slowly smearing interface between the solvent and viscous oil. A unique natural convection was induced, with the combined effect of gravity, diffusion (mixing), and capillarity all contributing to the recovery of heavy oil. On the basis of the saturation method, boundary condition, and the Bond number, four different motion modes of mixing zone and interfaces of miscible fluids in the capillary tube were revealed and categorized to identify the degree of interface development (immiscible flooding). Also, the mixing zone, mass flux, and flow behavior were quantified using dimensionless parameters. The results indicate that priority may be given to a solvent with a high interfacial tension (IFT) for the solvent-based oil-recovery technique because of a strong imbibition and further enhancement of the dilution and displacement processes under conditions of a similar viscosity ratio. The data provided will be useful for the accuracy of modeling studies, especially for complex geologies where oil/solvent interaction is critically difficult to develop in order for mixing to occur.
|File Size||1 MB||Number of Pages||15|
Alberta Innovates. 2018. Alberta Innovates Program Opportunities. Presentation, Recovery Technologies Program.
Banerjee, D. K. 2012. Oil Sands, Heavy Oil & Bitumen From Recovery to Refinery. Tulsa, Oklahoma: Pennwell Corporation.
Chang, J., Ivory, J. J., Forshner, K. et al. 2013. Impact of Solvent Loss During Solvent Injection Processes. Presented at the SPE Heavy Oil Conference, Canada, Calgary, AB, 11–13 June. SPE-165476-MS. https://doi.org/10.2118/165476-MS.
Chen, C. and Meiburg, E. 2002. Miscible Displacements in Capillary Tubes: Influence of Korteweg Stresses and Divergence Effects. Phys Fluids 14 (7): 2052–2058. https://doi.org/10.1063/1.1481507.
Chui, J. Y. Y., de Anna, P., and Juanes, R. 2015. Interface Evolution During Radial Miscible Viscous Fingering. Phys. Rev. E 92 (4): 041003(R). https://doi.org/10.1103/PhysRevE.92.041003.
Cui, J. and Babadagli, T. 2017. Retrieval of Solvent Injected During Heavy-Oil Recovery: Pore Scale Micromodel Experiments at Variable Temperature Conditions. Int J Heat Mass Transf 112: 837–849. https://doi.org/10.1016/j.ijheatmasstransfer.2017.05.034.
Hallworth, M. A., Huppert, H. E., and Woods, A. W. 2005. Dissolution-Driven Convection in a Reactive Porous Medium. J Fluid Mech 535: 255–285. https://doi.org/10.1017/S0022112005004830.
Hassan, S. F. and Babadagli, T. 2016. Core to Pore Scale Visual Analysis of Mixing Process in the Presence of Interface Between Heavy-Oil and Solvent. Presented at the SPE Western Regional Meeting, Anchorage, Alaska, 23–26 May. SPE-180487-MS. https://doi.org/10.2118/180487-MS.
Heinrich, M. and Wolf, B. A. 1992. Interfacial Tension Between Solutions of Polystyrenes: Establishment of a Useful Master Curve. Polymer 33 (9): 1926–1931. https://doi.org/10.1016/0032-3861(92)90494-H.
Heinrich, M. and Wolf, B. A. 1993. Establishment of Phase Equilibria: Temperature Jump Experiments in a Spinning-Drop Apparatus. Macromolecules 26 (22): 6106–6110. https://doi.org/10.1021/ma00074a036.
James, L. 2009. Mass Transfer Mechanisms During the Solvent Recovery of Heavy Oil. PhD dissertation, University of Waterloo, Canada.
Jiang, Q. and Butler, R. M. 1996. Selection of Well Configurations in VAPEX Process. Presented at the International Conference on Horizontal Well Technology, Calgary, Alberta, 18–20 November. SPE-37145-MS. https://doi.org/10.2118/37145-MS.
Keijzer, P. P. M. and de Vries, A. S. 1993. Imbibition of Surfactant Solutions. SPE Adv Technol Ser 1 (2): 110–113. SPE-20222-PA. https://doi.org/10.2118/20222-PA.
Khaledi, R. R., Beckman, M. S., Pustanyk, K. et al. 2012. Physical Modeling of Solvent-Assisted SAGD. Presented at the SPE Heavy Oil Conference, Canada, Calgary, Alberta, 12–14 June. SPE-150676-MS. https://doi.org/10.2118/150676-MS.
Khenien, A. 2014. Linear Stability of an Interface Between Two Miscible Liquids. PhD dissertation, University of Southampton, Southampton, England.
Korteweg, D. J. 1901. Sur la forme que prennent les equations du mouvements des fluides si l’on tient compte des forces capillaires causees par des variations de densite considerables mais connues et sur la theorie de la capillarite dans l’hypothese d’une variation continue de la densite. Neerl. Sci. Exactes Nat. Series II 6: 1–24.
Lin, L., Ma, H., Zeng, F., et al. 2014. A Critical Review of the Solvent-Based Heavy Oil Recovery Methods. Presented at the SPE Heavy Oil Conference, Canada, Calgary, Alberta, 10–12 June. SPE-170098-MS. https://doi.org/10.2118/170098-MS.
May, S. E. and Maher. J. V. 1991. Capillary-Wave Relaxation for a Meniscus Between Miscible Liquids. Phys Rev Lett 67 (15): 2013–2015. https://doi.org/10.1103/PhysRevLett.67.2013.
Mohammed, M., and Babadagli, T. 2013. Efficiency of Solvent Retrieval During Steam-Over-Solvent Injection in Fractured Reservoirs (SOS-FR) Method: Core Scale Experimentation. Presented at the SPE Heavy Oil Conference, Calgary, Alberta, 11–13 June. SPE-165528-MS. https://doi.org/10.2118/165528-MS.
Orsi, G., Galletti, C., Brunazzi, E., et al. 2013. Mixing of Two Miscible Liquids in T-Shaped Microdevices. Chem Eng Trans 32: 1471–1476. https://doi.org/10.3303/CET1332246.
Pojman, J. A. and Viner, G. 2008. Studying Diffusion of Partially Miscible and Systems Near Their Consolute Point by Laser Line Deflection. Opt Lasers Eng. 46 (12): 893–899. https://doi.org/10.1016/j.optlaseng.2008.04.002.
Pojman, J. A., Whitmore, C., Liveri, M. L. T. et al. 2006. Evidence for the Existence of an Effective Interfacial Tension Between Miscible Fluids: Isobutyric Acid-Water and 1-Butanol-Water in a Spinning-Drop Tensiometer. Langmuir 22 (6): 2569–2577. https://doi.org/10.1021/la052111n.
Salibindla, A., Subedi, R., Shen, V. et al. 2018. Dissolution-Driven Convection in a Heterogeneous Porous Medium. J Fluid Mech 857: 61–79. https://doi.org/10.1017/jfm.2018.732.
Sauer, B. B. and Walsh, D. J. 1991. Use of Neutron Reflection and Spectroscopic Ellipsometry for the Study of the Interface Between Miscible Polymer Films. Macromolecules 24 (22): 5948–5955. https://doi.org/10.1021/ma00022a009.
Scoffoni, J., Lajeunesse, E., and Homsy. G. M. 2001. Interface Instabilities During Displacements of Two Miscible Fluids in a Vertical Pipe. Phys Fluids 13 (3): 553–556. https://doi.org/10.1063/1.1343907.
Seon, T., Hulin, J.-P., Salin, D. et al. 2004. Buoyant Mixing of Miscible Fluids in Tilted Tubes. Phys Fluids 16 (2): L103–L106. https://doi.org/10.1063/1.1808771.
Seon, T., Hulin, J.-P., Salin, D. et al. 2005. Buoyancy Driven Miscible Front Dynamics in Tilted Tubes. Phys Fluids 17 (3): 031702. https://doi.org/10.1063/1.1863332.
Seon, T., Hulin, J.-P., Salin, D. et al. 2006. Laser-Induced Fluorescence Measurements of Buoyancy Driven Mixing in Tilted Tubes. Phys Fluids 18 (4): 041701. https://doi.org/10.1063/1.2189286.
Seon, T., Znaien, J., Salin, D. et al. 2007. Front Dynamics and Macroscopic Diffusion in Buoyant Mixing in a Tilted Tube. Phys Fluids 19 (12): 125105. https://doi.org/10.1063/1.2821733.
Stevar, M. S. and Vorobev, A. 2012. Shapes and Dynamics of Miscible Liquid/Liquid Interfaces in Horizontal Capillary Tubes. J Colloid Interface Sci 383 (1): 184–197. https://doi.org/10.1016/j.jcis.2012.06.053.
Truzzolillo, D. and Cipelletti, L. 2017. Off-Equilibrium Surface Tension in Miscible Fluids. Soft Matter 13 (1): 13–21. https://doi.org/10.1039/C6SM01026A.
Truzzolillo, D., Mora, S., Dupas, C. et al. 2016. Nonequilibrium Interfacial Tension in Simple and Complex Fluids. Phys Rev X 6 (4): 041057. https://doi.org/10.1103/PhysRevX.6.041057.
Truzzolillo, D., Mora, S., Dupas, C. et al. 2014. Off-Equilibrium Surface Tension in Colloidal Suspensions. Phys Rev Lett 112 (12): 128303. https://doi.org/10.1103/PhysRevLett.112.128303.
Upreti, S. R., Lohi, A., Kapadia, R. A. et al. 2007. Vapor Extraction of Heavy Oil and Bitumen: A Review. Energy Fuels 21 (3): 1562–1574. https://doi.org/10.1021/ef060341j.
Vlad, D. H. and Maher, J. V. 1999. Dissolving Interfaces in the Presence of Gravity. Phys Rev E 59 (1): 476–478. https://doi.org/10.1103/PhysRevE.59.476.
Vorobev, A. 2014. Dissolution Dynamics of Miscible Liquid/Liquid Interfaces. Current Opinion in Colloid & Interface Science 19 (4): 300–308. https://doi.org/10.1016/j.cocis.2014.02.004.
Zoltowski, B., Chekanov, Y., Masere, J. et al. 2007. Evidence for the Existence of an Effective Interfacial Tension Between Miscible Fluids. 2. Dodecyl Acrylate-Poly (Dodecyl Acrylate) in a Spinning Drop Tensiometer. Langmuir 23 (10): 5522–5531. https://doi.org/10.1021/la063382g.