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Published byNoah Anthony Modified over 9 years ago
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Lab 5: Exploring for Petroleum Key Q: How is petroleum found?
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Petroleum & Natural Gas Petroleum (oil): liquid fossil fuel made of hydrogen & carbon Natural gas: Gaseous fossil fuel made mainly of methane Forms from marine plants & animals that die-sink- begin to decay-become buried. If temperature conditions are right oil or natural gas will form, and can collect underground in areas called reservoirs.
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Formation of petroleum and natural gas
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Reservoirs
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Geology of Petroleum Deposits Three conditions must be present for oil & natural gas reservoirs to form: SRS: Source, Reservoir, Seal –Source rock: rich in organic matter buried deep enough for it to turn into oil; Source of the oil –Reservoir: porous sedimentary rock that the oil can flow through & collect in. –Seal: dense rock that stops the oil from rising up to the surface.
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Methods of Exploration Geologists map the rocks & project down –Looking for SRS Seismic exploration –Create a small explosion and study how density difference cause waves to refract & reflect Drill test wells –Method is very expensive
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