oa Lattice Boltzmann Simulation for Flux Change in Laminar Flow Under Oscillating Boundary Condition

The amount of oil production in the world is decreasing recently and it is of importance to seek the technological development for enhanced oil recovery (EOR) in place in the subsurface. Seismic stimulation is known as one of the methods of EOR. Recently, many laboratory experiments and field tests have been performed such as water, gas, chemical, or thermal injections to attempt the enhancement of oil production. Numerous observations show that seismic stimulation of oil reservoir may alter water and oil production. But the detailed mechanism of seismic stimulation is not fully understood. We attempt to understand the mechanism of the flux change in viscous laminar flow under oscillating boundary condition to simulate seismic EOR. We focus on flux change by the oscillated boundary wall because of partial high pressure gradient and flow velocity difference. In this study, we analyze a single-phase flow in various pore shapes and scales with two dimensional (2D) Lattice Boltzmann method (LBM). The results show pore scales and shapes are largely related with the flux change, because of the reduction of pressure loss and the flow velocity difference between the wall and flow.