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Crude oil is obtained by drilling down into the ground to an oil well. The oil is then pumped out of the ground and put into barrels. The barrels of oil are then sent to a plant where it is processed into different products for consumer use.
you extract them by drilling wells
The answer is oil.
Scientists can use sonar and seismic studies to test an area for oil. It is not always certain, however. To really find out if an area is rich in oil, drilling must occur.
At present, drilling for oil is prohibited until 2048. See Wikipedia link. Second, there has been some drilling in the 1970's offshore in the Ross Sea, but only traces of gas were found. It will be hard to justify spending money to explore for oil, as the cost of drilling and producing is very high. So the ban on exploration may continue after 2048. See second link.
An increase in oil drilling would increase the risk of pollution.
Yes
Drilling for natural gas is similar to drilling for oil, but gas must be liquefied before it can be shipped.
the only ban on oil drilling was in 1919
We are drilling for oil in the united states
Charles. W. Turl has written: 'Possible effects of noise from offshore oil and gas drilling activities on marine mammals' -- subject(s): Effect of noise on, Environmental aspects, Environmental aspects of Industrial noise, Gas well drilling, Industrial noise, Marine mammals, Noise, Oil well drilling, Submarine, Submarine Oil well drilling
Oil Drilling
drilling
Brandon C. Nuttall has written: 'Oil and gas drilling activity summary for Kentucky, 1989' -- subject(s): Statistics, Oil well drilling, Gas well drilling 'Oil and gas drilling activity summary for Kentucky, 1988' -- subject(s): Statistics, Oil well drilling, Gas well drilling
Deep
Ogoniland in Nigeria has been damaged from oil drilling
You can probably find where to get jobs in oil drilling by contacting an oil drilling company and asking for a job, or by going to any legitimate job finding organisation.