Publications

When a reservoir reaches production stage, level of oil production in the reservoir will decrease, leaving large residual oil left in the reservoir (residual oil saturation). It is important to find a way to increase oil recovery in order to pump the oil that remains in the reservoir. Polymer injection is one technique of enhanced oil recovery (EOR). Generally, oil is in the porous media, but on the condition of low porosity and permeability, oil is contained in the fractured media. It is important to understand how the fluid flows in a fractured media. Polymers is considered a non-Newtonian fluid, meaning the polymer has a viscosity that is not constant on Shear Stress [SK Baijal, 1982]. This study uses Lattice Boltzmann Methods D2Q9 for flow of single-phase polymer fluids simulation in 2-D fractured media, which shows shear thinning non-Newtonian behavior (n < 1). Power law and Carreau Yasuda viscosity models are proposed in this study to found relationship between effective viscosity and local shear rate. The study show shear stress arising from roughness and slit width of fractured media resulted changes in polymer viscosity.