Crude oil is a natural compound that is found in rock formations within the earth’s surface. A complex combination of biological compounds, petroleum is composed of carbon, hydrogen, nitrogen and oxygen, along with trace metals, resulting in a one-of-a-kind chemical composition that produces oil-based crude oil for extraction. Crude is found in a wide variety of locations and formats, including semi-solids, liquids (conventional...
Wednesday, November 17, 2010
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