Pseudokinetic Model for Field-Scale Simulation of In-Situ Combustion
- Diana Mercado (State University of Campinas) | Osvair V. Trevisan (State University of Campinas)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- February 2017
- Document Type
- Journal Paper
- 161 - 167
- 2017.Society of Petroleum Engineers
- In-Situ Combustion, Reservoir Simulation, Pseudokinetic Model
- 14 in the last 30 days
- 152 since 2007
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Chemical reactions of the in-situ-combustion (ISC) process take place in a thin zone of less than a meter thick. Numerical simulations at the field scale typically use gridblocks that are at least two orders of magnitude greater than that. Such divergence leads to improper representations of key aspects of the process, such as the temperature distribution and the reaction kinetics. In accordance with that, the reaction occurrence is not controlled by the activation energy in the simulation models. The major shortcoming is on fuel deposition, a key issue in ISC. In the simulator, the cracking reaction may proceed slowly at initial reservoir temperature, generating coke from the beginning of the simulation job.
The main focus of the paper is on a new pseudokinetic model to improve the representation of the combustion-zone effects and the fuel consumption in the field-scale ISC simulation. Along with the development of the pseudokinetic model, remedies are proposed for some shortcomings of the current reservoir simulation of ISC. The model allows maintaining the dependence of reaction rate with temperature through the use of appropriate activation-energy values. Furthermore, the model reduces the temperature-distribution effect by controlling the reaction rate on the basis of average-temperature values observed in the field-simulation model.
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Bazargan, M., Chen, Bo, Cinar, M. et al. 2011. A Combined Experimental and Simulation Workflow To Improve Predictability of In-Situ Combustion. Presented at the Western North American Region Meeting, Anchorage, 7–11 May. SPE-144599-MS. http://dx.doi.org/10.2118/144599-MS.
Chang, R. 2009. Físico-Química Para As Ciências Químicas E Biológicas, third edition. Mexico: McGraw Hill.
Christensen, J., Darche, G., Dechelette, B. et al. 2004. Applications of Dynamic Gridding to Thermal Simulations. Presented at the SPE International Thermal Operations and Heavy Oil Symposium and Western Regional Meeting, Bakersfield, California, 16–18 March. SPE-86969-MS. http://dx.doi.org/10.2118/86969-MS.
Coats, K. 1983. Some Observations on Field-Scale Simulation of the In-Situ Combustion Process. Presented at the Reservoir Symposium, San Francisco, 15–18 November. SPE-12247-MS. http://dx.doi.org/10.2118/12247-MS.
Computer Modelling Group Ltd., C. 2013. User’s Guide STARS. Calgary: CMG.
Davies, R. 1989. The Thin Flame Technique for In-Situ Combustion Simulation. Presented at the Annual Technical Conference and Exhibition of the Society of Petroleum Engineers, San Antonio, Texas, 6–11 October. SPE-19647-MS. http://dx.doi.org/10.2118/19647-MS.
Dogru, A. H., Odeh, A. S., and Jines, W. R. 1987. A. Field-Scale, Three-Dimensional Simulator for Thermal Oil Recovery. Presented at the SPE Annual Technical Conference and Exhibition, Dallas, 27–30 September. SPE-16734-MS. http://dx.doi.org/10.2118/16734-MS.
Hwang, M. K., Jines, W. R., and Odeh, A. S. 1982. An In-Situ Combustion Process Simulator With a Moving-Front Representation. SPE J. 22 (2): 271–279. SPE-9450-PA. http://dx.doi.org/10.2118/9450-PA.
Islam, M., Chakma, A., and Farouq Ali, S. 1989. State-of-the-Art of In-Situ Combustion Modeling and Operations. Presented at the SPE California Regional Meeting, Bakersfield, California, 5–7 April. SPE-18755-MS. http://dx.doi.org/10.2118/18755-MS.
Ito, Y. and Chow, A. K.-Y. 1988. A Field Scale In-Situ Combustion Simulator With Channeling Considerations. SPE Res Eng 3 (2): 419–430. SPE-13220-PA. http://dx.doi.org/10.2118/13220-PA.
Marjerrison, D. and Fassihi, M. 1992. A Procedure for Scaling Heavy-oil Combustion Tube Results to a Field Model. Presented at the SPE/DOE Eighth Symposium on Enhanced Oil Recovery, Tulsa, 22–24 April. SPE-24175-MS. http://dx.doi.org/10.2118/24175-MS.
Mercado, D. and Trevisan, O. 2014. Numerical Simulation of a Dry Combustion Tube Test for a Brazilian Heavy Oil. Presented at the SPE Latin America and Caribbean Petroleum Engineering Conference, Maracaibo, Venezuela, 21–23 May. SPE-169335-MS. http://dx.doi.org/10.2118/169335-MS.
Mercado, D. 2015. Pseudokinetic Model for Field-Scale Simulation of In-Situ Combustion, PhD Thesis, State University of Campinas, Campinas, Brazil (February 2015).
Nelson, T. and McNeil, J. 1961. How To Engineer an In-Situ Combustion Project. The Oil and Gas Journal 59: 58–65.
Younis, R. and Gerritsen, M. 2006. Multiscale Process Coupling by Adaptative Fractional Stepping: An In-Situ Combustion Model. Presented at the SPE/DOE Symposium on Improved Oil Recovery, Tulsa, 22–26 April. SPE-93458-MS. http://dx.doi.org/10.2118/93458-MS.