Oil is a fossil fuel that is used worldwide for various purposes such as lighting, transportation, and cooking. If we go by the facts, the US, in 2009, produces 4.9 million barrels of crude oil each day and an additional 9.8 million barrels imported from other countries around the world.
With the help of fossils, petroleum made for several thousand years. Then, drilling companies found these reserves with specially designed instruments. Now everything is done under the contract if the company wants to set up the drilling process.
Oil, as fuel, discovered five thousand years ago when drilled from the ground. Since then, it has become a major industry for the whole world.
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Crude oil is refined to produce petroleum products such as gasoline, kerosene, and other heating oil. To meet its energy needs, the oil industry must find new sources of oil and increase the production of existing refineries. This means routine maintenance tasks.
The oil will be secreted from the fossils of animals and plants that died between 10000000-600000000 years ago-both underground and under the sea. The leftovers from dead plants and animals sank into the earth's crust. Over the years, they sink to the sediment layers of earth where the presence of oxygen either very little or not at all.
The newly formed sediments exert heat and pressure on the surrounding environment. This heat along with pressure, in turn, distills sediment for oil and natural gas.