Porosity is one of the most important rock properties that can be calculated from well log data. It gives the rock’s capacity to store oil or gas. Thus far, I have referred to porosity as the void space in the rock. A rock such as chalk may be nearly half void space, but the pores are usually so small that they cannot be seen without suitable magnification.
KeywordsPore Volume Capillary Pressure Water Saturation Relative Permeability Pore System
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