Actas de congresos
Numerical Simulation Of A Dry Combustion Tube Test For A Brazilian Heavy Oil
Spe Latin American And Caribbean Petroleum Engineering Conference Proceedings. Society Of Petroleum Engineers (spe), v. 1, n. , p. 900 - 910, 2014.
Mercado Sierra D.P.
Combustion tube tests' simulations become an increasingly important part in the design of projects aimed at the implementation of this recovery technique. Although simulations at the laboratory scale cannot be scaled directly to the field, they provide essential knowledge on how numerical modeling of physical and chemical phenomena that occur during combustion could be dealt with. The present paper reports simulations and history matching of a dry combustion tube test for a Brazilian heavy oil. Reaction model includes a coke generation reaction and three high temperature oxidation reactions of coke, heavy and light oil components. The history matching process is conducted in three stages. The first stage considers the matching of the combustion front velocity and fuel consumption, by altering the activation energy of the heavy fraction cracking reaction and the frequency factor of coke oxidation. In the second stage, production fluid rates and pressure drops are considered with the adjustment of the relative permeability curves and heat losses. In the third stage, the peak temperatures and produced gas composition are matchedby reviewing the kinetic parameters and the reaction stoichiometry. From the analysis of the laboratory data, a significant influence of the steam plateau in the production behavior is identified. It is observed that the initial volume of water present in the system is produced almost entirely before oil production begins. The oil bank approximates to the producer well once the initial water volume of the system has been produced. To better represent such occurrence, it is necessary to consider the relative permeability variation as a function of oil temperature, besides taking into account the radial heat losses in the system. This is shown as an efficient alternative to more adequately represent the fluid distribution along the combustion tube. Finally, it should be noted that the simulated results show an overall good representation of the experimental data.1900910Chevron,Halliburton,PDVSA,Schlumberger,TotalBonet Gonçalves, L., Trevisan, O., (2010) Experimental Study of the Wet Combustion on Heavy Oil Recovery, , Campinas, São Paulo: Universidade Estadual de campinasBousald, S., Multiple-quenched fireflood process boosts efficiency (1989) Journal Petroleum Technology, , Vol. SPE 16739Burger, J., Sorieau, P., (1985) Thermal Methods of Oil Recovery, , Paris: Editions TechnipGottfried, B.S., Theoretical analysis of the steam plateau in forward in-situ combustion (1963) Society of Petroleum Engineers, 774, p. 31. , SPEGreen, D.W., Willhite, G., (2003) Enhanced Oil Recovery, , Richardson, TX: Society of Petroleum EngineersGutierrez, D., The ABCs of in-situ combustion simulations: From laboratory experiments to the field scale (2011) Society of Petroleum Engineers, pp. 1-15. , Vol. CSUG/SPE 148754Gutierrez, D., The challenge of predicting field performance of air injection projects based on laboratory and numerical modelling (2009) Journal of Canadian Petroleum Technology, 48 (4)Sarathi, P., (1999) In-Situ Combustion Handbook: Principles and Practices, , USDOE Office of Fossil Energy (FE) (US)Penberthy, W., Some fundamentals of steam-plateau behavior in combustion oil recovery (1968) Society of Petroleum Engineers of AIME, 2213. , SPEAl-Hussainy, R., Ramey, H.R., Jr., Design and operation of laboratory combustion tubes (1966) Society of Petroleum Engineers, 1290. , SPE 1966Pereira, A., Trevisan, O., (2008) Thermoanalysis and Reaction Kinetics of Heavy Oil Combustion, , Campinas: Universidade Estadual de CampinasSatman, A., (1981) In-situ Combustion Models for the Steam Plateau and for Fieldwide Oil Recovery, , Standford University Petroleum Research Institute, Standford