how is petroleum formed? how is it obtained?
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Petroleum, also called crude oil, is a fossil fuel. Like coal and natural gas, petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria. ... Their crude oil is extracted with giant drilling machines.
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Petroleum was formed from organisms living in the sea. As these organisms died, their bodies settled at the bottom of the sea and got covered with layers of sand and clay. Over millions of years, absence of air, high temperature and high pressure transformed the dead organisms into petroleum and natural gas.
Petroleum reservoirs can be found beneath land or the ocean floor. Their crude oil is extracted with giant drilling machines. ... There are huge quantities of petroleum found under Earth's surface and in tar pits that bubble to the surface. Petroleum even exists far below the deepest wells that are developed to extract it.
Petroleum reservoirs can be found beneath land or the ocean floor. Their crude oil is extracted with giant drilling machines. ... There are huge quantities of petroleum found under Earth's surface and in tar pits that bubble to the surface. Petroleum even exists far below the deepest wells that are developed to extract it.
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