Simulation of Noncondensable Gases in SAGD-Steam Chambers
- Simon Gittins (Cenovus Energy) | Subodh C. Gupta (Cenovus Energy) | Maliha Zaman (Cenovus Energy)
- Document ID
- Society of Petroleum Engineers
- Journal of Canadian Petroleum Technology
- Publication Date
- January 2013
- Document Type
- Journal Paper
- 20 - 29
- 2013. Society of Petroleum Engineers
- 4.6 Natural Gas, 5.3.9 Steam Assisted Gravity Drainage
- 2 in the last 30 days
- 789 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 12.00|
|SPE Non-Member Price:||USD 35.00|
Cenovus Energy has been developing the Foster Creek and Christina Lake projects using the steam-assisted gravity-drainage (SAGD) process successfully. The SAGD process at both these projects has been operated at well above the initial reservoir pressure for extended periods of time and this has been simulated adequately using dead-oil models, which omit solution gas from the simulations. As we move into later stages in the life of the more mature well pairs at these projects, it is important to understand the role of noncondensable gases on the development of the steam chambers better in order to optimize the methane-coinjection, steam rampdown, and, ultimately, blowdown phases of operations. Cenovus is also testing reduced-pressure SAGD and solvent-aided processes (SAPs) at these projects, and simulations indicate that noncondensable gas will play a significant role in these processes. Hence, understanding the flow behaviour of noncondensable gases in SAGD steam chambers could have far reaching consequences for lowering the energy intensity and associated costs, and reducing the environmental impact of bitumen production while potentially increasing reserves. This paper presents the results of some recent simulations which are improving our understanding of the role of solution gas in SAGD and the impact of noncondensable gases on steam chamber development.
|File Size||1 MB||Number of Pages||10|
Aherne, A.L. and Maini, B. 2006. Fluid Movement in the SAGDProcess A Review of the Dover Project. Presented at the Canadian InternationalPetroleum Conference, Calgary, Alberta, 13-15 June. PETSOC-2006-153. http://dx.doi.org/10.2118/2006-153.
Butler, R.M., McNab, G.S., and Lo, H.Y. 1981. Theoreticalstudies on the gravity drainage of heavy oil during in situ steam heating.Can. J. Chem. Eng. 59 (4): 455-460.
Canas, C., Kantzas, A., and Edmunds, N. 2009.Investigation of Gas Flow in SAGD. Presented at the Canadian InternationalPetroleum Conference, Calgary, 16-18 June. PETSOC-2009-194. http://dx.doi.org/10.2118/2009-194.
Edmunds, N.R. 2000. Investigation of SAGD Steam Trap Control inTwo and Three Dimensions. J Can Pet Technol 39 (1): 30-40.PETSOC-00-01-02. http://dx.doi.org/10.2118/00-01-02.
Edmunds, N.R. 2007. Effect of Solution Gas on 1D Steam Rise inOil Sands. J Can Pet Technol 46 (1): 56-62. JCPT Paper No.07-01-07. http://dx.doi.org/10.2118/07-01-07.
Edmunds, N.R. and Chhina, H. 2001. Economic Optimum OperatingPressure for SAGD Projects in Alberta. J Can Pet Technol 40(12): 13-17. Paper No. 01-12-DAS. http://dx.doi.org/10.2118/01-12-DAS.
Edmunds, N.R., Kovalsky, J.A., Gittins, S.D. et al. 1994.Review of Phase A Steam-Assisted Gravity-Drainage Test. SPE Res Eng 9 (2): 119-214. SPE-21529-PA. http://dx.doi.org/10.2118/21529-PA.
Gittins, S.D., Edmunds, N., and Mukherjee, N. 1992.Numerical Simulation of the Steam Assisted Gravity Drainage Process at theUnderground Test Facility. Presented at the 13th IEA Workshop and Symposium,Banff, Canada, 27-30 September.
Gupta, S.C. and Gittins, S.D. 2006. Christina Lake SolventAided Process Pilot. J Can Pet Technol 45 (9): 15-18. JCPTPaper No. 06-09-TN. http://dx.doi.org/10.2118/06-09-TN.
Kisman, K.E. 2003. Artificial Lift--A Major Unresolved Issuefor SAGD. J Can Pet Technol 42 (8): 39-45. PETSOC-03-08-02.http://dx.doi.org/10.2118/03-08-02.
Mukherjee, N.J., Gittins, S.D., Edmunds, N.R. et al. 1995. AComparison of Field Versus Forecast Performance for Phase B of the UTF SAGDProject in the Athabasca Oil Sands. Presented at the 6th UNITAR InternationalConference on Heavy Crude and Tar Sands, Houston, 12-17 February.
Stone, T.W., Edmunds, N.R., and Kristoff, B.J. 1989. AComprehensive Wellbore/Reservoir Simulator. Presented at the SPE Symposium onReservoir Simulation, Houston, 6-8 February. SPE-18419-PA. http://dx.doi.org/10.2118/18419-MS.
Thimm, H.F. 2000. A General Theory of Gas Production in SAGDOperations. Presented at the Canadian International Petroleum Conference,Calgary, 4-8 June. PETSOC-2000-017. http://dx.doi.org/10.2118/2000-017.
Yuan, J.Y., Nasr, T.N., and Law, D.H.S. 2003. Impacts ofInitial Gas-to-Oil Ratio (GOR) on SAGD Operations. J Can Pet Technol 42 (1): 48-52. PETSOC-03-01-04. http://dx.doi.org/10.2118/03-01-04.