Most oil is recovered from an oil field
A)by relying on the natural pressure of the system.
B)by simply pumping it out of the ground.
C)only after using secondary or enhanced procedures that first generate pressure.
D)by pumping freshwater into the ground and making the oil float to the top.

Question

Quizplus · Accepted Answer

Most oil is recovered using secondary or enhanced procedures such as water flooding, gas injection, or thermal recovery. These procedures help to generate pressure in the reservoir and push the oil towards the production well. Only relying on natural pressure or simply pumping the oil out of the ground is not sufficient for the economic recovery of oil. Injecting freshwater into the ground is not a common method for oil recovery.

Most Oil Is Recovered from an Oil Field