Porosity as a petrographic parameter

This video explains the importance and the effects of porosity during hydrocarbon exploitation. It bases on porosity as a tool which will affect the amount of hydrocarbon accumulation in the reservoir rock, as we know the more the pore volume to bulk volume ratio(porosity), the greater is the amount of petroleum accumulation. Porosity is at risks of being altered by secondary factors like cementation and plate tectonics. In carbonate reservoirs, plate tectonics at convergent plate settings ruptures the rock creating channels while in sandstones brings grains closure to one another reducing pore volume.