What does Primary Recovery mean?
The amount of the oil reserves which flows out of well due to high natural pressure in the underground. Primary recovery is automatic once oil well is drilled.
Futures Knowledge Explains Primary Recovery
Oil recovery refers to the processes by which crude oil is extracted from below the Earth’s surface. Oil recovery can be categorized into three phases: Primary, Secondary and Tertiary. In primary recovery oil flows out due to natural pressure. But the flow rate gradually declines. An external support is required to maintain pressure. In secondary and tertiary recovery, water, gas and chemicals are injected inside the well to increase pressure of the reservoir to push crude oil to the surface.