The deepest well from which water can be pumped, by creating a vacuum on the top end of the pipe, is 10 m (34 ft). In drilling for oil, wells of a mile or more in depth have to be made. From this depth, how do you think the oil is recovered?

Question

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Answer 1

a pump is lowered into the hole, and the oil is pushed up.

Or, a pipe inside another pipe is pushed down, and air or water is pumped down the outside, and oil is thus pushed up the inside.

Or, google pumping oil from deep wells.