Methods of oil production

(1)wells flowing

Most oil fields in the dawn of her life with high pressures, therefore, when any well drilled oil rushes strongly enough to lift it to the surface through a tube running soon, from the bottom of the well.
(2)
 gas liftPressure of some gases extracted from a nearby well inside the pipe lining to put pressure on oil and paid within the pipe production.
(3)
 by lifting pumps

Is lifted crude oil pumps, or installing cranes mechanism instead of gas or any other methods.