A Parametric Simulation Study for Solvent-Coinjection Process in Bitumen Deposits
- Ali Yazdani (Statoil Canada) | Jostein Alvestad (Statoil ASA) | Dagrun Kjoensvik (Statoil ASA) | Eimund Gilje (Statoil ASA) | Espen Kowalewski (Statoil ASA)
- Document ID
- Society of Petroleum Engineers
- Journal of Canadian Petroleum Technology
- Publication Date
- July 2012
- Document Type
- Journal Paper
- 244 - 255
- 2012. Society of Petroleum Engineers
- 5.2.1 Phase Behavior and PVT Measurements, 6.1.5 Human Resources, Competence and Training, 5.4.6 Thermal Methods, 5.1.1 Exploration, Development, Structural Geology, 7.4.3 Market analysis /supply and demand forecasting/pricing, 6.5.1 Air Emissions, 5.3.9 Steam Assisted Gravity Drainage, 1.7.5 Well Control, 7.4.4 Energy Policy and Regulation, 4.6 Natural Gas
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In-situ extraction of ultraviscous deposits from the vast bitumen resources in western Alberta, Canada, requires significant water and energy usage, which consequently leads to greenhouse-gas emissions. Currently proven steam-based recovery schemes include cyclic-steam-stimulation (CSS), steamflooding, and steam-assisted gravity-drainage (SAGD) processes, which are accompanied by many economic and environmental challenges. Coinjection of solvent with steam is a technology that has the potential to improve the efficiency of steam processes as well as reduce energy usage and carbon dioxide emissions.
In recent years, researchers and industry professionals have attempted to develop the process further by conducting fundamental research as well as field pilot trials, with varying degrees of success. However, the current level of understanding of the process and the knowledge surrounding the fundamental physics and mechanisms involved are not entirely satisfactory.
In this paper, a parametric simulation study was performed to address the key aspects of the solvent-coinjection (SCI) process that contribute to further understanding and development of the process. Simulation observations were verified with experimental evidence where available to support the results and conclusions. Effects of several operational and geological parameters were evaluated on the performance of the SCI process, and the relative performance benefits were assessed over normal SAGD operations. These parameters included solvent type, solvent concentration, initial-solution gas/oil ratio (GOR), relative permeability curves, and pay thickness.
The results revealed that the optimal solvent should not be chosen only on the basis of mobility-improvement capability, but also under consideration of other operational, phase- and flow-behavioral and/or geological conditions that are set or present. Higher concentrations of solvents showed more energy-saving upsides than rate-acceleration benefits. It was also observed that the reservoir steam-intake rate is still likely to be the prime performance indicator of the SCI process. In addition, SCI showed that the potential exists for accessing more resources, particularly below the producer level. Furthermore, steam trap control on the producer seems to be problematic when used for SCI simulation. With the current well-control capacity of simulators, a higher degree of subcool is likely to be needed to avoid live vapor-phase production from the producer.
|File Size||3 MB||Number of Pages||12|
Akinboyewa, J., Das, S.K., Wu, Y.-S., and Kazemi, H. 2010. Simulation ofExpanding Solvent - Steam Assisted Gravity Drainage in a Field Case Study of aBitumen Oil Reservoir. Paper SPE 129963 presented at the SPE Improved OilRecovery Symposium, Tulsa, 24-28 April. http://dx.doi.org/10.2118/129963-MS.
Boak, J.J. and Palmgren, C. 2007. Preliminary Numerical Analysis for aNaphtha Co-injection Test During SAGD. J Can Pet Technol 46(1). PETSOC-07-01-01. http://dx.doi.org/10.2118/07-01-01.
Butler, R.M. and Mokrys, I.J. 1989. Solvent Analog Model of Steam AssistedGravity Drainage. AOSTRA Journal of Research 5 (1):17-32.
Ferguson, M.A., Mamora, D.D., and Goite, J.G. 2001. Steam-Propane Injectionfor Production Enhancement of Heavy Morichal Oil. Paper SPE 69689 presented atthe SPE International Thermal Operations and Heavy Oil Symposium, Porlamar,Margarita Island, Venezuela, 12-14 March. http://dx.doi.org/10.2118/69689-MS.
Gates, I.D. 2007. Oil Phase Viscosity Behaviour in Expanding-SolventSteam-Assisted Gravity Drainage. J. Pet. Sci. Eng. 59(1-2): 123-134. http://dx.doi.org/10.1016/j.petrol.2007.03.006.
Govind, P.A., Das, S.K., Srinivasan, S., and Wheeler, T.J. 2008. ExpandingSolvent SAGD in Heavy Oil Reservoirs. Paper SPE 117571 presented at theInternational Thermal Operations and Heavy Oil Symposium, Calgary, 20-23October. http://dx.doi.org/10.2118/117571-MS.
Gupta, S. and Gittins, S. 2005. Christina Lake Solvent Aided Process Pilot.Paper No. 2005-190 presented at the Petroleum Society's 6th CIPC/56th AnnualTechnical Meeting, Calgary, 7-9 June.
Gupta, S., Gittins, S., and Picherack, P. 2001. Insights Into Some KeyIssues With Solvent Aided Process. Paper CIPC 2000-126 presented at theCanadian International Petroleum Conference, Calgary, 12-14 June.
Gupta, S., Gittins, S., and Picherack, P. 2005. Field Implementation ofSolvent Aided Process. J Can Pet Technol 44 (11): 8-13.PETSOC-05-11-TN1. http://dx.doi.org/10.2118/05-11-TN1.
Leaute, R.P. 2002. Liquid Addition to Steam for Enhancing Recovery (LASER)of Bitumen with CSS: Evolution of Technology From Research Concept to a FieldPilot at Cold Lake. Paper SPE 79011 presented at the SPE International ThermalOperations and Heavy Oil Symposium and International Horizontal Well TechnologyConference, Calgary, 4-7 November. http://dx.doi.org/10.2118/79011-MS.
Leaute, R.P. and Carey, B.S. 2005. Liquid Addition to Steam forEnhancing Recovery (LASER) of Bitumen With CSS: Results From the First PilotCycle. Paper presented at the 56th Canadian International Petroleum Conference(CIPC), Calgary, 7-9 June. http://dx.doi.org/10.2118/2005-161.
Nasr, T.N. and Ayodele, O.R. 2006. New Hybrid Steam-Solvent Process for theRecovery of Heavy Oil and Bitumen. Paper SPE 101717 presented at the Abu DhabiInternational Petroleum Exhibition and Conference, Abu Dhabi, 5-8 November. http://dx.doi.org/10.2118/101717-MS.
Nasr, T.N. and Isaacs, E.E. 2001. Process for enhancing hydrocarbon mobilityusing a steam additive. US Patent No. 6,230,814.
Nasr, T.N., Beaulieu, G., Golbeck, H., and Heck, G. 2003. Novel ExpendingSolvent-SAGD Process ES-SAGD. J Can Pet Technol 42 (1):13-16. JCPT Paper No. 03-01-TN. http://dx.doi.org/10.2118/03-01-TN.
Nenniger, J. 2008. Method and Apparatus for Stimulating Heavy OilProduction. Canadian (CIPO) Patent No. 2299790. [year correction]
Orr, B. 2009. ES-SAGD; Past, Present and Future. Student Paper 129518-STUpresented at the SPE Annual Technical Conference and Exhibition, New Orleans,4-7 October.
Palmgren, C., Walker, I., Carlson, M., Uwierea, M., and Torlak, M. 2011.Reservoir design of a shallow LP-SAGD project for in situ extraction ofAthabasca Bitumen. Paper WHOC11-520 presented at the 2011 World Heavy OilCongress (WHOC11), Edmonton, Alberta, Canada, 14-17 March.
Perlau, D.L., Jaafar, A.E., and Yerian, J.A. 2011. Novel Design Approach forSA-SAGD Pilot at Cold Lake. Paper WHOC11-523 presented at the 2011 World HeavyOil Congress (WHOC11), Edmonton, Alberta, Canada, 14-17 March.
Solanki, S.C., Barrett, K., Riva, D., Becker, L., and Brindle, G. 2011. Thefirst SC-SAGD Pilot in the Grosmont. Paper WHOC11-615 presented at the 2011World Heavy Oil Congress (WHOC11), Edmonton, Alberta, Canada, 14-17 March.
Zhao, L. 2004. Steam Alternating Solvent Process. Paper SPE 86957 presentedat the SPE Symposium on International Thermal Operations and Heavy Oil andWestern Regional Meeting, Bakersfield, California, USA, 16-18 March. http://dx.doi.org/10.2118/86957-MS.