Plunger lift controller and method

Details Plunger lift controller and method Plunger lift controller and method

E - Fixed Constructions

21

B

E21B 43/12 (2006.01) F04B 47/12 (2006.01)

Patent

CA 2623571

An embodiment of a method of controlling a plunger lift system for a well, the plunger lift system having a tubing positioned in a cased well, a plunger in the tubing moveable from the bottom of the tubing to a top of the tubing, a control valve in functional connection with the tubing, a plunger arrival sensor, a tubing pressure sensor, a casing pressure sensor, and a sales line pressure sensor, a controller in operational connection with the control valve and functional connection with the sensors for receiving signals from the sensors, the method including the steps of: defining a threshold value for a trigger event, the trigger event initiating operation of the control valve by the controller; defining event-value conditions upon which adjustment of the trigger event is adjusted; determining, upon a calling-event, if the event- value conditions have been satisfied; and adjusting the trigger event threshold value upon satisfaction of the event--value conditions.

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