LINEAR INDUCTION MOTOR PLUNGER LIFT

摘要

A plunger lift system that uses a linear induction motor instead of gas or fluid pressure to lift the plunger. Electrical voltage is applied to electromagnets installed along the tubing of a wellbore that will induce magnets contained within a special plunger that is introduced inside the tubing to move it and allow it to lift liquids with a piston-like action. The electromotive force may be adjusted by varying the applied voltage as needed to lift the column of liquid from the wellbore or the current reversed to accelerate and optimize plunger descent.

主权项

1. An improved plunger lift system, the plunger lift system having a cased well, a plunger in the cased well moveable from a stop at the bottom of the cased well to a top of the cased well, thus delivering fluids to a wellhead, wherein lifting force is provided by a fluid pressure in said well, wherein the improvement comprises replacing said fluid pressure lifting force with a linear induction motor (LIM) lifting force.