Quantifying of the Impact of Reservoir Heterogeneity on Recovery Using Shear and Vorticity

摘要

We have used the vorticity of the displacement velocity, as defined by Heller (1966), to derive dimensionless numbers to be used to quantify the relative impact of viscosity ratio, gravity, diffusion and dispersion, and permeability heterogeneity on reservoir flow behaviour. We have used this approach to introduce a new objective measure of the impact of permeability and porosity heterogeneity on reservoir flow behaviour. Buoyancy forces are quantified using a gravity to viscous ratio (G) and diffusion/ dispersion using the transverse dispersion number.