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Plunger lift is a method of artificial lift that uses the well’s own energy to lift fluid from a set depth in the tubing string. It is used to prevent liquid loading once the well drops below critical rate. Plungers act as an interface between fluid and gas. The well’s energy is the driving force that brings the plunger to the surface. Plunger lift focuses on reducing flowing bottom hole pressure to allow in flow from the reservoir. The open cycle is triggered by opening a valve at the surface by blowing of the head gas stored in the tubing. This creates a differential across the plunger allowing the plunger to rise against the path of least resistance and come to the surface.

Controllers