However, the low

matrix porosity may play major role for fluid storage (e.g.

Semi-quantitative analysis of

matrix porosity by scanning electron microscopy

Malecot, "Influence of cement

matrix porosity on the triaxial behaviour of concrete," Cement and Concrete Research, vol.

Case C is a reservoir with minor domains of lower permeability in a higher permeability matrix:

matrix porosity is held constant but porosity of lower permeability domains is varied to show that in such low permeability domains TOF can still equal that of the higher permeability domains.

The related Asmari generally has poor

matrix porosity. The rock in the Zagros folds has high fracture porosity and high permeability.

Matrix porosity ([epsilon]) and density (d) were measured by the water displacement method, as previously described [23].

Machek (2011) used SEM to determine cracks within granite rock and it was concluded that the majority of the granite

matrix porosity could be attributed to grain-boundary and cleavage cracks.

Thus, the total oxide weight percentage also provides a measure of clay

matrix porosity.

[[epsilon].sub.p] =

matrix porosity [[L.sup.3]/[L.sup.3]]

The related Asmari generally has poor

matrix porosity. The rock is fractured within the folds of the Zagros Belt, has high fracture porosity, and an incredibly high permeability.

Tyler and Wheatcraft (1990) found that the pore distribution of a Sierpinski carpet (a fractal geometric pattern) could consistently represent two-dimensional soil

matrix porosity using water retention properties from natural soils.

Generally, coal is characterized as a dual-pore system [6] including the

matrix porosity consisting of micropores/mesopores in the coal matrix (i.e., the porous material region) and the fracture porosity composed of nonuniformly distributed macropores and microfractures (i.e., the free flow region) [7].