Gas Lift-Part 5: Valve Spacing and Pressuring

Gas lift valves can aid in the unloading and producing of a well. With the valves correctly spaced and accurately pressured, unloading proceeds in a step by step, valve by valve manner to the optimum point of lift, and maximum liquid production is attained. But if well conditions change, or if the gas lift design data was not very accurate, maximum liquid production is not attained. Improper valve location, improper setting of operating pressures, and gas entry at more than one point can prevent wells from attaining maximum production. petex.utexas.edu