Definitions for "Primary Recovery"
Production in which oil moves from the reservoir, into the wellbore, under naturally occurring reservoir pressure.
Recovery of petroleum oil from underground reservoirs by taking advantage of the natural energy (pressures) in these reservoirs. The most common types of these sources of reservoir pressures are solution-gas drive, gas-cap-expansion drive, and water (aquifer) drive. More than one of these natural drives may occur in a single reservoir. See also secondary recovery and tertiary recovery.
The period of production in which oil moves from its reservoir through the wellbore under naturally occurring reservoir pressure.