16
Mar
How Do You Calculate Porosity. This is a three minute video. It is not only usually unknown but in many reservoirs is not a constant parameter but a curve that depends on the variable column lithology its matrix fabric and rocks stiffness. Gravimetric water content Θg. The porosity is conventionally given the symbolf and is expressed either as a fraction varying between 0 and 1 or a percentage varying between 0 and 100.
In this method the weight of a dry sample is measured and then the sample is immersed under vacuum in water or any other fluid that rock has the tendency to imbibe. However the fractional form is ALWAYS used in calculations. Bulk density Bd. If you know the real density of your material you can just calculate porosity of your sample by measuring its bulk density massvolume. Water-filled pore space WFPS. Or gg Volumetric water content Θv.
Water-filled pore space WFPS.
This will yield a decimal number that is smaller than one. Gcm3 or kgm3 Total porosity or pore space TP. Porosity can be determined from a relationship if we know the bulk density and particle density assumed to be 265 gcubic cm. Porosity is calculated is the ratio between the pore volume of a medium and its total volume and it is expressed as nVvVt. Porosity is derived as follows. The porosity is conventionally given the symbolf and is expressed either as a fraction varying between 0 and 1 or a percentage varying between 0 and 100.