Gas lift is the process of lifting fluids from the wellbore using high pressure gas as the energy source. Downhole gas lift equipment consists of a series of gas lift valves spaced at predetermined depths in the tubing string. The tubing string is set in a packer above the casing perforations ([[:file:artificial-lift_fig2.png|Figure 2]]). Gas is normally injected down the tubing/casing annulus and enters the tubing via the gas lift valves. A surface gas compressor is used to provide the high gas pressure required to open the gas lift valves. | Gas lift is the process of lifting fluids from the wellbore using high pressure gas as the energy source. Downhole gas lift equipment consists of a series of gas lift valves spaced at predetermined depths in the tubing string. The tubing string is set in a packer above the casing perforations ([[:file:artificial-lift_fig2.png|Figure 2]]). Gas is normally injected down the tubing/casing annulus and enters the tubing via the gas lift valves. A surface gas compressor is used to provide the high gas pressure required to open the gas lift valves. |