A Lattice Boltzmann Model for Simulating Gas Flow in Kerogen Pores

摘要: Nanoscale phenomena in kerogen pores could result complicated non-Darcy effects shale gas production, and so classical simulation approaches based on Darcy’s law may not be appropriate for simulating flow shale. In general, understanding the transport mechanisms a pore is first most important step accurately this work, we present novel lattice Boltzmann (LB) model, which can take account of surface diffusion, slippage, adsorbed layer, to study under real conditions. With Langmuir isothermal adsorption equation bounce-back/specular-reflection boundary condition, gas–solid gas–gas molecular interactions at solid are incorporated into LB model. Furthermore, diffusion slippage free-gas velocity profile mass flux studied via It found that appears as parabolic center apparently higher than near wall. particular, find both enhance flux. Compared with more factor small pores, while it negligible large pores.