As I'm working on the applications of CRM to estimate reservoir heterogeneity, I was about to infer the interwell connectivity weights obtained by CRM to the value of permeability obtained between an injection-production well pair. I would be grateful if someone can help to find a suitable equation that represents a value of permeability using injection and production rate. I thought maybe Theis(Ei) solution is appropriate but it would work only on homogeneous reservoirs. I need an equation which gives K like an stream line between two wells (one injection and one production).