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crude oil
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Offshore oil pumpjack mounted on a small concrete platform in open water, with drilling rigs and industrial structures visible on the horizon. Oil pumpjack with a red counterweight operating in a snowy field in western Siberia, Russia, with industrial equipment and trees in the background. crude oil crude oils
Turning sewage into green crude oil: How does it work?
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Offshore oil pumpjack mounted on a small concrete platform in open water, with drilling rigs and industrial structures visible on the horizon.
Oil derrick near Venezuela Unrefined petroleum pumped from the ground is called crude oil.

crude oil

petroleum product
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crude oil, liquid petroleum that is found accumulated in various porous rock formations in Earth’s crust and is extracted for burning as fuel or for processing into chemical products. A summary treatment of crude oil follows. For full treatment, see petroleum, petroleum production, and petroleum refining. Crude oil is a mixture of comparatively volatile liquid hydrocarbons (compounds composed mainly of hydrogen and carbon), though it also contains some nitrogen, sulfur, and oxygen. Those elements form...

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