TWO-PIECE PLUNGER

摘要

A two-piece well plunger is provided having an upper sleeve and a lower lance member that engages (e.g., unites) and disengages the upper member. The upper and lower member are sized for receipt within production tubing of a well and are configured to move upwardly in the production tubing when united and to fall separately when disengaged (e.g., separated). The upper sleeve is generally cylindrical and has an central bore. The lower lance member includes a dislodging rod that is sized to extend through central bore of the upper sleeve when the two pieces are united. The lance member and rod seal the central bore when the members are united. An upper end of the rod extends beyond a top end of the sleeve when the members are united and is utilized to disengage the members when the united plunger arrives in, a well head.

主权项

1. A plunger for use in a production well comprising:
a cylindrical upper member having a central bore extending between an open bottom end and an open top end, wherein an outside diameter of said upper member is sized for receipt within a production tubing; a lower member having:
a rod sized for receipt within an extension through said central bore of said upper member; anda body connected to a lower end of said rod, said body having an outside diameter larger than a rod diameter of said rod and sized for receipt in the production tubing, when said upper member and lower member are configured to unite wherein said rod extends through said central bore and an upper end of said rod extends beyond said open top end of said upper member and fluid flow through said central bore is substantially blocked by said lower member.