Percolation Models of One-Phase Flow in Rocks of Different Types

There are many types of pore space structure in natural rocks. We consider oil and gas reservoirs as well as hydrogenous water- and ore-bearing strata. These formations break up in three fundamental groups, namely grained, cavernous, and fractured reservoirs. There also exist rocks of a mixed type, e.g., fractured-cavernous, fractured-porous, etc. Inside each group, it is possible to describe conductivity of the reservoir rocks using the model of a heterogeneous medium (see chapter 1), if the distribution of conducting structural elements with respect to intrinsic conductivities is defined.