Write an essay on 'Conservation of Petroleum'. Word limit: 500 words.
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Petroleum has a great impact on our world as a whole, but with that comes many responsibilities. Are we going to cause a shortage in the areas we get our petroleum from? How dependant do we really want to be on the Middle East? Are we keeping the pollution to a minimum? All of these are excellent examples of issues we must deal with day in and out concerning petroleum.
Petroleum essentially came from bacteria and plankton. When the cells died and fell to the bottom of their marine environment, they were buried and compacted by shale over thousands of years. The shale then provided an impermeable shield from oxygen and water for the decaying organic matter. Under these conditions of high pressure and temperature, petroleum was produced and then migrated as oil and gas into the sandstone above it. Still trapped by the shale, petroleum separates into gas, oil and water under the force of gravity.
Petroleum essentially came from bacteria and plankton. When the cells died and fell to the bottom of their marine environment, they were buried and compacted by shale over thousands of years. The shale then provided an impermeable shield from oxygen and water for the decaying organic matter. Under these conditions of high pressure and temperature, petroleum was produced and then migrated as oil and gas into the sandstone above it. Still trapped by the shale, petroleum separates into gas, oil and water under the force of gravity.
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