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How to find oil

Did you know that oil is a form of petroleum which is found beneath the surface of the earth? Oil is remains of small plants and animals that died between 10 million and 600 million years ago. After they died, they sank into the sand at the bottom of the sea.
Oil is a form of petroleum which is found beneath the surface of the earth. Oil is remains of small plants and animals that died between 10 million and 600 million years ago. After they died, they sank into the sand at the bottom of the sea.

Other petroleum products are gas and condensate. Petroleum is naturally occurring hydrocarbons. Oil is found in oil traps, and the people who look for oil are geologists. The geologists must find the right conditions for an oil trap – the right source rock, reservoir rock and entrapment. Usually, they use seismology to locate petroleum reserves. Seismology consists of creating shock waves that pass through hidden rock layers and studying the waves that are reflected back to the surface. The geologists study the seismological results looking for signs of oil and gas traps. When they find such traps, these are marked using GPS or buoys at sea.

Several geologic elements are necessary for oil and gas to accumulate in big enough quantities to be worth producing such as an organic-rich source to generate the oil or gas, a porous reservoir rock to store the petroleum in, and some sort of trap to prevent the oil and gas from leaking away.

Skrevet av Julie i 10.klasse
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