Ajuste de una prueba de tubo de combustion usando un modelo simplificado de reacciones

Abstract

The implementation of an air injection process in a reservoir of heavy crude oil is based on a good experimental design. One of the main tests of this design is the combustion test tube, from which the design bases are obtained so that the pilot scale process can be implemented. However, it is of utmost importance to make a numerical history matching of the combustion tube test in order to create a numerical model at pilot scale. By using this model we can assess the process performance before applying it directly to a field pilot. Considering the information above, this study is about a 1D numerical model that was built by matching a combustion tube test of Colombian crude. To do so, two reactions were used with the aim of simulating the thermal effects of the process. The first reaction’s only objective is to deposit the coke, which will serve as fuel for the second reaction which is named combustion reaction. The peak temperatures, the deposited coke, and the front velocity were matched by varying the kinetic parameters of the two reactions.

Keywords

• in-situ combustion
• combustion tube test
• simulation model
• combustion front velocity