Gas-pressurized lubricator

Details Gas-pressurized lubricator Gas-pressurized lubricator

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 47/12 (2006.01) E21B 43/12 (2006.01) F16F 9/02 (2006.01) F16F 9/512 (2006.01)

Patent

CA 2527012

Embodiments of the present invention provide methods and apparatus for reducing kinetic energy of a plunger within a plunger lift system. In one aspect, a lubricator is provided at a surface of a wellbore, the lubricator having a sealed, pressurized chamber therein to cushion the plunger upon impact. In another aspect, a method is provided for reducing the kinetic energy of the plunger by providing a compressed gas chamber within a lubricator, moving a kinetic energy-reducing surface which is partially bounding the chamber, and compressing the gas within the chamber to reduce kinetic energy of the plunger and cushion the impact force of the plunger.

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