[7.1.1.1] The present paper has shown that the experimental
observations on hysteresis and process dependence
of capillary pressure and relative permeabilities
can be reproduced within a macroscopic phenomenological
theory.
[7.1.1.2] The approach is based on the distinction between
percolating and nonpercolating fluid phases
introduced in [14, 16, 15].
[7.1.1.3] Contrary to what was expected,
the introduction of interfacial areas
can be avoided at the expense of some rather
drastic constitutive assumptions.
[7.1.1.4] In spite of these assumptions the present theory
is more general than the traditional theory
because the
[page 8, §0] latter can be obtained as a special case.
[8.0.0.1] In this special case capillary pressure and
relative permeability functions can be identified,
and are found to show similar hysteresis and
process dependence as observed in experiment.
