Question

explain the process of extraction of petroleum

Answer 1

Petroleum is a crude oil which contains hundreds of hydrocarbons all mixed together.It is a thick black liquid and is of little use.

These are the main processes evolved
Locating oil field
Drilling
Oil extraction and recovery

Answer 2

Extracting crude oil normally starts with drilling wells into an underground reservoir. When an oil well has been tapped, a geologist (known on the rig as the "mudlogger") will note its presence. ... Often many wells (called multilateral wells) are drilled into the same reservoir, to an economically viable extraction rate

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