A plunger lift system for oil or gas wells, designed and installed by Production Lift Systems, Inc., is a unique combination of tools, well conditions and producing methods. The application of these systems results in more
efficient use of the formation.

Plunger lift is often compared to a long stroke pump. The well tubing from the perforations to the surface acts as a long pump barrel. The plunger itself travels the entire length on each
stroke, pushing produced fluid to the surface.

Gas from the formation, or, in certain instances, from outside supply, acts as the power source as it expands under the plunger to force the plunger and the fluid to the surface. Cycle frequency of the plunger is controlled
at the surface either by time or by pressure buildup.

With plunger lift, gas is the motivating force that operates the plunger.The operating pressure and depth determines the amount of fluid that can be produced on each cycle. To operate a plunger the general requirement is 300 cubic feet of gas per barrel of fluid per 1,000 feet of lift. Many plungers are operating with pressures as low as 120 psig.

The success of the plunger installation depends largely upon the seal element. The blade or pad plunger seal is free to shift from drift to nominal tubing ID.

this seal gives excellent separation between the produced fluid and the gas preventing slippage and gas breakthrough into the fluid.

Plunger lift systems find wide application in producing high ratio oil wells, in deliquifying gas wells and in gas lift installations in order to increase lift efficiency and paraffin removal.