Experimental Analysis of Optimal Thermodynamic Conditions for Heavy-Oil/Bitumen Recovery Considering Effective Solvent Retrieval
- Laura Moreno-Arciniegas (University of Alberta) | Tayfun Babadagli (University of Alberta)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- February 2017
- Document Type
- Journal Paper
- 149 - 160
- 2017.Society of Petroleum Engineers
- Solvent retrieval, Heavy oil, High temperature, Solvent injection
- 51 in the last 30 days
- 134 since 2007
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Light-hydrocarbon solvent injection is an effective process to improve heavy-oil/bitumen recovery from oil sands. In this process, oil production is achieved by gravity drive, which is enhanced through the dilution of oil by injected solvent. However, solvent retrieval is one of the major economic concerns in defining the viability of this technique. In this research, a sandpack experimental study was conducted, and the solvent retrieval was determined on the basis of thermodynamic conditions and fluid characterization. Two heavy-oil samples (8.6 °API and 10.28 °API) from different fields in Alberta, Canada, and four light-hydrocarbon solvents (propane, n-hexane, n-decane, and distillate hydrocarbon) were used in this experimental scheme. Results showed that solvent retrieval increases when light-hydrocarbon solvents (propane and distillate hydrocarbon) are used compared with solvent with high molecular weight (n-hexane and n-decane). Temperature and pressure highly influenced the solvent retrieval. The percentage of solvent retrieval increased when the hydrocarbon solvent was closer to the vapor phase (dewpoint). However, oil recovery showed significant reduction when propane and n-hexane were injected because of high asphaltene deposition on the sandpack. The maximum solvent retrieval was calculated to be nearly 98% at 120°C and 698.47 kPa when propane-and-distillate hydrocarbon was used as solvent. Formation damage, on the other hand, may increase when propane is used as solvent because of the high asphaltene deposition.
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Aspen Hysys. 2015. Assay management software, version 8.8. http://www.aspentech.com/products/v8-release/
Andersen, S. I. and Speight, J. G. 1999. Thermodynamic Models for Asphaltene Solubility and Precipitation. Journal of Petroleum Science and Engineering 22: 53–66. http://dx.doi.org/10.1016/S0920-4105(98)00057-6.
Butler, R. and Mokrys, I. J. 1989. Solvent Analog Model of Steam-Assisted Gravity Drainage. AOSTRA J. Res. 5: 17–32.
Butler, R. and Mokrys, I. 1991. A New Process (VAPEX) for Recovering Heavy Oils Using Hot Water and Hydrocarbon Vapour. J Can Pet Technol 30 (1): 97–106. PETSOC-91-01-09. http://dx.doi.org/10.2118/91-01-09.
Butler, R. and Jiang, Q. 2000. Improved Recovery of Heavy Oil by Vapex With Widely Spaced Horizontal Injectors and Producers. J Can Pet Technol 39 (1): 48–56. PETSOC-00-01-04. http://dx.doi.org/10.2118/01-04.
Civan, F. 2007. Formation Damage by Organic Deposition. In Reservoir Formation Damage, second edition, 468–521. Oxford, USA: Gulf Professional Publishing.
Das, S. and Butler, R. 1994. Effect of Asphaltene Deposition on the Vapex Process: A Preliminary Investigation Using a Hele-Shaw Cell. J Can Pet Technol 33 (6): 1–45. PETSOC-94-06-06. http://dx.doi.org/10.2118/94-06-06.
Das, S. 2005. Diffusion and Dispersion in the Simulation of Vapex Process. Presented at the SPE/PS-CIM/CHOA, Calgary, 1–3 November. SPE-97924-MS. http://dx.doi.org/10.2118/97924-MS.
Edmunds, N., Moini, B., and Peterson, J. 2009. Advanced Solvent-Additive processes Via Genetic Optimization. Presented at the Canadian International Petroleum Conference, Calgary, 16–18 June. PETSOC-2009-115. http://dx.doi.org/10.2118/2009-115.
Haghighat, P. and Maini, B. 2008. Role of Asphaltene Precipitation in Vapex Process. Presented at the Canadian International Petroleum Conference/SPE Gas Technology Symposium 2008 Joint Conference, Calgary, 17–19 June. PETSOC-2008-087. http://dx.doi.org/10.2118/2008-087.
Hilderbrand, J. H. and Scott, R. L. 1964. The Solubility of Nonelectrolytes. Dover: New York.
Hirschberg, A., DeJong, L. N. J., Schipper, B. A. et al. 1984. Influence of Temperature and Pressure on Asphaltene Flocculation. SPE J. 24 (3): 283–293. SPE-11202-PA. http://dx.doi.org/10.2118/11202-PA.
James, L., Rezaei, N., and Chatzis, I. 2007. VAPEX, Warm VAPEX, and Hybrid VAPEX—The State of Enhanced Oil Recovery for In Situ Heavy Oils in Canada. Presented at the Canadian International Petroleum Conference, Calgary, 12–14 June. PETSOC-2007-200. http://dx.doi.org/10.2118/2007-200.
Leyva-Gomez, H. and Babadagli, T. 2014. Optimal Application Conditions of Steam-Solvent Injection for Heavy Oil/Bitumen Recovery From Fractured Reservoirs: An Experimental Approach. Presented at the SPE International Heavy Oil Conference and Exhibition, Mangaf, Kuwait, 8–10 December. SPE-172901-MS. http://dx.doi.org/10.2118/172901-MS.
Moghadam, S., Nobakht, M., and Gu, Y. 2007. Permeability Effects in a Vapor Extraction (VAPEX) Heavy Oil Recovery Process. Presented at the Petroleum Society 8th Canadian Petroleum Conference, Calgary, 12–14 June. CIPC 2007-095.
Moreno, L. and Babadagli, T. 2014a. Asphaltene Precipitation, Flocculation and Deposition During Solvent Injection at Elevated Temperatures for Heavy Oil Recovery. Fuel 124 (202). http://dx.doi.org/10.1016/j.fuel.2014.02.003.
Moreno, L. and Babadagli, T. 2014b. Quantitative and Visual Characterization of Asphaltenic Components of Heavy-Oil After Solvent Interaction at Different Temperatures and Pressures. Fluid Phase Equilibria 366 (74). http://dx.doi.org/10.1016/j.fluid.2014.01.006.
Moreno, L. and Babadagli, T. 2015. Multilayer Organic Deposition on the Rock Surface With Different Wettabilities During Solvent Injection for Heavy-Oil Recovery. The Canadian Journal of Chemical Engineering 93 (4): 664–677. http://onlinelibrary.wiley.com/doi/10.1002/cjce.v93.4/issuetoc
Papadimitriou, N., Romanos, G., Charalambopoulou, G. et al. 2007. Experimental Investigation of Asphaltene Deposition Mechanism During Oil Flow in Core Samples. J. Petr. Sci. and Eng. 57: 281–293. http://dx.doi.org/10.1016/j.petrol.2006.10.007.
Pathak, V., Babadagli, T., and Edmunds, N. R. 2012. Mechanics of Heavy Oil and Bitumen Recovery by Hot Solvent Injection. SPE Res Eval & Eng 15 (2): 182–194. SPE-144546-PA. http://dx.doi.org/10.2118/144546-PA.
Peterson, J., Riva, D., Edmunds, N. et al. 2010. The Application of Solvent-Additive SAGD Processes in Reservoirs With Associated Basal Water. Presented at the Canadian Unconventional Resources and International Petroleum Conference, Calgary, 19–21 October. SPE-137833-MS. http://dx.doi.org.10.2118/137833-MS.
Salama, D. and Kantzas, A. 2005. Experimental Observation of Miscible Displacement of Heavy Oils With Hydrocarbon Solvents. Presented at the SPE International Thermal Operations and Heavy Oil Symposium, Calgary, 1–3 November. SPE-97854-MS. http://dx.doi.org/10.2118/97854-MS.
Speight, J. G. 1999. The Chemical and Physical Structure of Petroleum: Effects on Recovery Operations. J. Pet. Sci. and Eng. 22: 13–15. http://dx.doi.org/10.1016/S0920-4105(98)00051-5.