Patent ID: 7080691

Claim:
A multiple stage plunger lift tool for use in a well having tubing: comprising: 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 well 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 well 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.