High GOR oil production. Plunger drops through liquid buildup. Pressure and volume buildup in annulus. Controller opens motor valve. Gas storage transfers to tubing.
Plunger travels up tubing acting as a seal between gas and liquid slug.
Gas expansion and velocity increase as plunger moves up hole. Liquids produced through lubricator outlets. Gas production suspends plunger in upper lubricator allowing maximum flow through lower outlet. Time activated controller, repeats cycle.