Estimation the relations between porosity and permeability using core data

الملخص

Porosity and permeability are related properties of any rock or loose sediment. Both are related to the number, size, and connections of openings in the rock. More specifically, porosity of a rock is a measure of its ability to hold a fluid. Mathematically, it is the open space in a rock divided by the total rock volume (solid and space). Permeability is a measure of the ease of flow of a fluid through a porous solid. A rock may be extremely porous, but if the pores are not connected, it will have no permeability. Likewise, a rock may have a few continuous cracks which allow ease of fluid flow, but when porosity is calculated, the rock doesn't seem very porous.

Correlations between porosity, Φ , and permeability, k, are often tested for sedimentary rocks in relation to petroleum geology and reservoir characterization. A general trend of increase in permeability with porosity can be expected. However, the effects of grain size, packing, compaction, and solution dissolution processes related to development, preservation or loss of primary and secondary porosity can lead to a wide variety of relationships between permeability and various forms of porosity