Abstract

DANGON-MOLANO, Juan et al. Effect of water saturation during the ignition of an in situ combustion process. Rev. ion [online]. 2018, vol.31, n.2, pp.83-97. ISSN 0120-100X.  https://doi.org/10.18273/revion.v31n2-2018006.

In Situ Combustion (ISC) is a thermal method for the enhanced heavy oil recovery. To start the ISC process is necessary to consume a part of the oil in the reservoir by means of the oxidation reactions, then maintain combustion by continuous air injection. This initial stage is known as ignition and its study allows to identify the energy requirement of the rock-fluid system. Proper research of ignition could lead to successful ISC field trial.

The purpose of the present project is to predict the spontaneous ignition of a Colombian heavy oil reservoir through a mathematical model programmed in MATLAB, which took into account a combined mass and heat transfer of the reactions that occur in the low temperature oxidation (LTO) regime. The kinetic parameters were obtained from the isothermal cell tests performed in the Air Injection Laboratory of the Instituto Colombiano del Petróleo. The results showed the direct effect of the water saturation on the delay ignition and the ignition distance from the injector well.

Keywords : In Situ Combustion; Isothermal Cell Unit; Spontaneous Ignition; MATLAB.

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