Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
POLYMER FLOODING IN SANDSTONE: ADSORPTION AND OIL DISPLACEMENT
Submission Author:
Thiago Pereira , RJ
Co-Authors:
Thiago Pereira, Marcio CARVALHO
Presenter: Thiago Pereira
doi://10.26678/ABCM.COBEM2019.COB2019-1494
Abstract
The addition of polymers to the injection water is one of the most used enhanced oil recovery (EOR) methods because of the ability of these compounds to increase the viscosity of the solution even at low concentrations. This increase of the water phase viscosity promotes the reduction of the mobility ratio between fluids, improving the displacement of oil. However, there is a large number of factors related to the use of these substances that can modify the original characteristics of the porous medium. In order to better understand these mechanisms, a review of the characteristics related to polymer flooding, and an experimental analysis were carried out to verify polymer adsorption mechanism and oil recovery processes. Three types of core samples with different petrophysical characteristics were used. Tests were carried out to study polymer adsorption on formations under specific working conditions using the Two Slug Method. Then, oil recovery tests were performed with the injection of different water phases: sea water, polymer solution and glycerol-water solution with the same viscosity of the polymer solution. Results showed the efficiency of the Two Slug Method in adsorption tests and the use of polymer solutions in oil recovery processes.
Keywords
Polymer Solutions, Enhanced oil recovery, Adsorption, Retention, Sandstones.
