Patent ID: 7080692

Claim:
A method for the lifting of subterranean fluids in a well wherein said well has a first set of tubing with a first diameter and a second set of tubing with a second diameter which is larger than said first set of tubing first diameter, and said first set of tubing is connected to said second set of tubing by a taper, said method comprising the steps of: sending a first plunger down said well wherein said first plunger has a diameter which accommodates said first set of tubing first diameter; installing a plunger lift tool in said well second set of tubing above said taper creating a first stage below said plunger lift tool and a second stage above said plunger lift tool wherein said plunger lift tool comprises: a shaft assembly defining a passageway therein having a top, a spreader cone, and a bottom; a sleeve defining a passageway therein having a top with an expandable bushing and a bottom; a positioning means defining a passageway therein for removably installing said plunger lift tool in said second set of tubing, said positioning means attached to said bottom of said sleeve; at least one shear pin for selectively holding said shaft assembly in position with said sleeve wherein said at least one shear pin breaks when a downward force is applied to said top of said shaft assembly allowing said shaft assembly spreader cone to cooperate with said expandable bushing of said sleeve thereby creating a seal between said plunger lift tool and said second set of tubing; and a retrieval assembly attached to said top of said shaft assembly for removing said tool from said well wherein said retrieval assembly includes a bypass cage with a ball check valve therein; sending said second plunger down said well wherein said second plunger has a diameter which accommodates said second set of tubing second diameter; creating pressure under said first plunger causing said first plunger and said subterranean fluids to lift up said well; passing said subterranean fluids through said plunger lift tool and said second plunger; and creating pressure under said second plunger causing said second plunger and said to subterranean fluids to lift to top of said well.