Crude oil is a natural occurr substance which is found in certain rock formations in the earth. To extract the maximum value from crude oil, it also needs to refined into petroleum . The best known of these is gasoline or petrol.
In the crude oil industry, there are oil names such as Crude Oil and Bonny Light and there are oil types such as light, heavy. Light oil has a low density and viscosity, while heavy oil is of higher density. The world market prefers light largely because it requires less refinement and production time before going to market.
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