Permeability heterogeneity effects on density-driven CO2 natural convection and carbon sequestration efficiency

Horizontal Wells for Enhanced CO2 Storage in Saline Aquifers

“…In the previous section, in order to be able to clearly observe the effect of permeability on storage capacity and the enhancement efficiency of horizontal wells in CO 2 sequestration projects, the saline aquifers were assumed to be homogeneous and isotropic. However, in reality, most geological formations including saline aquifers are to some degree anisotropic and heterogeneous . One of the most common examples of anisotropy in rock formations is that vertical permeability is much less than horizontal (lateral) permeability.…”