Effect of Dead-Oil Viscosity and Injected-Solvent Type on SVX Process Performance
- Muhammad Imran (Saskatchewan Research Council) | Kelvin (Kelly) D. Knorr (Saskatchewan Research Council)
- Document ID
- Society of Petroleum Engineers
- Journal of Canadian Petroleum Technology
- Publication Date
- May 2014
- Document Type
- Journal Paper
- 168 - 178
- 2014.Society of Petroleum Engineers
- 5.3.4 Reduction of Residual Oil Saturation, 4.3.4 Scale, 5.2.1 Phase Behavior and PVT Measurements, 5.4.7 Chemical Flooding Methods (e.g., Polymer, Solvent, Nitrogen, Immiscible CO2, Surfactant, Vapex), 4.3.3 Aspaltenes
- VAPEX, SVX, solvent injection
- 1 in the last 30 days
- 214 since 2007
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This work presents experimental results of four 3D-physical-model experiments that were performed to evaluate the dependence of the solvent-vapour-extraction (SVX) recovery process performance on initial dead-oil viscosity and injected-solvent-mixture composition. 0 Model excavation studies were also performed to approximate the solvent movement in the physical model and to map out the residual oil saturation and precipitated asphaltenes. The field-scale application and optimization of SVX processes requires that relationships be established among oil-production rates, solvent usage, and important process parameters (e.g., matrix permeability, initial dead-oil viscosity, solvent-mixture composition, and solvent usage). This work has attempted to generate such relationships for the two most promising mixed-solvent systems being considered for use in heavy-oil reservoirs. The analysis of the experimental results revealed that the initial dead-oil viscosity had a significant effect on the SVX performance. Higher oil-production rates were achieved with the lower-viscosity oils for both injected-solvent-mixture types, with a more-pronounced effect observed when using the CO2/C3 solvent mixture. The results also showed that the CO2/C3 mixture resulted in earlier solvent breakthrough and initial oil production, reduced solvent-makeup requirements (i.e., better solvent recycle stream), and reduced solvent retention in the model/reservoir, as compared with the C1/C3 solvent mixture. The residual-oil-saturation mapping showed that the CO2/C3 mixture led to comparatively lower values in the drained regions and a higher amount of precipitated asphaltenes remaining in the model, although there was evidence of some precipitated asphaltenes close to both the injection and production wells in all four experiments, regardless of the solvent-mixture type. Finally, this mapping also indicated that the solvent/oil interfaces and solvent chambers were more uniform and predictable for the CO2/C3 solvent-mixture injection.
|File Size||1 MB||Number of Pages||11|
Abukhalifeh, H., Lohi, A., and Upreti, S. 2009. A Novel Technique to Determine Concentration-Dependent Solvent Dispersion in Vapex. Energies 2 (4): 851-872. http://dx.doi.org/10.3390/en20400851.
Badamchi-Zadeh, A., Yarranton, H.W., Maini, B.B. et al. 2009. Phase Behaviour and Physical Property Measurements for VAPEX Solvents: Part II. Propane, Carbon Dioxide and Athabasca Bitumen. J Can Pet Technol 48 (3): 57-65. PETSOC-09-03-57. http://dx.doi.org/10.2118/09-03-57.
Butler, R.M. and Mokrys, I.J. 1991. A New Process (VAPEX) for Recovering Heavy Oils Using Hot Water and Hydrocarbon Vapour. J Can Pet Technol 30 (1): 97–106.
Das, S.K. and Butler, R.M. 1994. Investigation of "Vapex" Process in a Packed Cell Using Butane as a Solvent. Presented at the SPE/CIM/CANMET International Conference on Recent Advances in Horizontal Well Applications, Calgary, 20–23 March. PETSOC-HWC-94-47. http://dx.doi.org/10.2118/hwc-94-47.
Farouq Ali, S.M. 2010. Practical Heavy Oil Recovery. Edmonton, Alberta: Heavy Oil Technologies Limited.
Knorr, K.D. and Imran, M. 2012. Solvent-Chamber Development in 3D-Physical-Model Experiments of Solvent-Vapour Extraction (SVX) Processes With Various Permeabilities and Solvent-Vapour Qualities. J Can Pet Technol 51 (6): 425-436. SPE-149190-PA. http://dx.doi.org/10.2118/149190-PA.
Knorr, K.D. and Imran, M. 2011. Extension of Das and Butler Semianalytical Flow Model. J Can Pet Technol 50 (6): 53-60. SPE-148944-PA. http://dx.doi.org/10.2118/148944-PA.
Knorr, K.D., Wilton, R.R., and Zeng, F.B. 2008. Design and Installation of a High-Pressure 3D Physical Model for Evaluation of Solvent Vapor Extraction Processes. Presented at the World Heavy Oil Congress, Edmonton, Alberta, 10–12 March. Paper 2008-322.
Kristoff, B.J., Knorr, K.D., Preston, C.K. et al. 2008. Joint Implementation of Vapour Extraction Heavy Oil Recovery Process. Presented at the World Heavy Oil Congress, Edmonton, Alberta, 10–12 March. Paper 2008-468.
National Energy Board (NEB). 2004. Canada’s Oil Sands: Opportunities and Challenges to 2012. Calgary, Alberta: National Energy Board Publications Office.
Oliveira, M.F., Barillas, J.L.M., da Mata, W. et al. 2009. A Parametric Study of Solvent Injection as a Recovery Method For Heavy Oil and Bitumen Reservoirs. Presented at the Latin American and Caribbean Petroleum Engineering Conference, Cartagena de Indias, Colombia, 31 May-3 June. SPE-122040-MS. http://dx.doi.org/10.2118/122040-MS.
Panda, M.N. and Lake, L.W. 1994. Estimation of Single-Phase Permeability from the Parameters of a Particle-Size Distribution. AAPG Bull. 78 (7): 1028–1039.
Talbi, K., Kaiser, T.M.V., and Maini, B.B. 2008. Experimental Investigation of CO2-Based VAPEX for Recovery of Heavy Oils and Bitumen. J Can Pet Technol 47 (4): 29–36. PETSOC-08-04-29. http://dx.doi.org/10.2118/08-04-29.