Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EFFECT OF FLOW CONDITIONS IN THE MECHANICAL DEGRADATION OF POLYMER SOLUTIONS FOR EOR IN A MICROFLUIDIC POROUS MEDIA
Submission Author:
Jorge Antonio Avendaño Benavides , RJ , Brazil
Co-Authors:
Roberto Carvalho, Jorge Antonio Avendaño Benavides, Marcio CARVALHO
Presenter: Roberto Carvalho
doi://10.26678/ABCM.COBEM2019.COB2019-1439
Abstract
Of the various EOR methods, polymer solution flooding is the most straightforward to apply, as it is one of the simplest and cheapest. It is known that polymer breakup occurs in porous media, so that the efficiency of EOR decreases as the viscosity of the solution. This present work investigates some effects in shear and extensional viscosity of Flopaams and evaluate their pressure behavior in a porous media based on Darcy´s equation. Shear viscosity was measured by a Discovery Hybrid Rheometer (HR-3) using a cone-and-plate geometry, extensional viscosity was measured using a Haake Caber Extensional Rheometer and flow experience was done using a syringe pump (Harvard Apparatus) to inject the polymer solutions in a porous media micromodel (Dolomite) while a pressure transducer (Validyne) was monitoring the injection pressure. Four solutions were prepared with two different concentrations each (FPAAM 3130 2 g/l and 4 g/l, FPAAM 3630 2 g/l and 4 g/l). As expected viscosity increases with molecular weight and polymer concentration, and different flow scenarios shown the degradation of the polymers in terms of shear and extensional viscosity, with higher degradation for higher flow rates imposed.
Keywords
polymer degradation, Microfluidics, EOR, extensional rheology, Rheology
