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en.wikipedia.org/wiki/Petroleum

Petroleum is a naturally occurring, yellow-to-black liquid found in geological formations .... Williams extracted 1.5 million litres of crude oil by 1860, refining much of it into kerosene lamp oil. Williams's well became commercially viable a year ...

www.bbc.co.uk/bitesize/standard/chemistry/materialsfromoil/how_crude_oil_was_formed/revision/1

A BBC Bitesize secondary school revision resource for Standard Grade Chemistry on how crude oil was formed: fossil fuels, porous rock, non-porous rock.

oilprice.com/Energy/Crude-Oil/What-Is-Crude-Oil-A-Detailed-Explanation-On-This-Essential-Fossil-Fuel.html

Jul 24, 2009 ... Rather than using drills, crude oil is extracted from oil sands through strip mining or a variety of other techniques used to reduce the viscosity of ...

www.livescience.com/9404-mysterious-origin-supply-oil.html

Oct 10, 2005 ... But where does oil really come from, and how much is left? ... objects formed from the same raw material as Earth, that crude oil might exist on ...

www.livescience.com/33087-how-oil-form-petroleum.html

Mar 2, 2011 ... "Molecules in oil have the same backbone structures that we find in living ... That contains the precursors we find in crude oil," said Peters.

www.adventuresinenergy.org/What-are-Oil-and-Natural-Gas/How-Are-Oil-Natural-Gas-Formed.html

Stage 1 - All of the oil and gas we use today began as microscopic plants and animals living in the ocean millions of years ago. As these microscopic plants and ...

www.ask.com/youtube?q=How+is+Crude+Oil+Made&v=qO6_lMX83bw
Apr 16, 2012 ... This is a simple video explaining the basics of crude oil such as ... THat star wars introduction made me believe that I was some how powerful.

www.petro-online.com/news/fuel-for-thought/13/breaking_news/how_is_crude_oil_formed/31110

Oil has come to be a vital commodity in today's society. Click to read more...

www.ask.com/youtube?q=How+is+Crude+Oil+Made&v=BOy_j2blim8
May 26, 2016 ... Oil From Wikipedia, the free encyclopedia For other uses, see Oil ( disambiguation). A bottle of olive oil used in food This article contains special ...