Definitions for "Gas lift"
Keywords:  annulus, wellbore, aerates, lift, exert
Is the injection of gas through the well annulus down to calibrated gas lift valves to lighten the produced fluid column in the tubing. Used to start up well-flow and enhance flowrates.
The technique of raising a liquid in a vertical flow line by injecting a gas below a portion of the liquid column causing upward flow.
A recovery method that brings oil from the bottom of a well to the surface by using compressed gas. Gas pumped to the bottom of the reservoir mixes with fluid, expands it, and lifts it to the surface.