An oil refinery or petroleum refinery is an industrial process plant where crude oil is processed and refined into more useful products such as petroleum naphtha , gasoline , diesel fuel , asphalt base , heating oil , kerosene and liquefied petroleum gas .
An oil refinery or petroleum refinery is an industrial plant where crude oil is made into useful petroleum products by distillation and other processs . Products include gasoline , diesel fuel , asphalt base , heating oil , kerosene , and liquefied petroleum gas .