Page 200 - Percolation Models for Transport in Porous Media With

198 CHAPTER 11 GAS COLMATATION IN ELECTRIC ACTION

3. The stage of colmatation in the strict sense of the word. The bubbles shut
off the capillaries completely, and a sharp drop of the permeability (down to
zero) and a substantial decrease of the electric conductivity (by several tens
of times) occurs. Compared to the two previous ones, this stage is several
hundreds of times shorter.

In some cases (e.g., in the media with a specific heat of the solid part of the
rock much greater than that of the saturating fluid), complete colmatation of
the medium might be impossible for actual values of the energy release density
provided by customary sources of electric energy.