F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 47/12 (2006.01) E21B 43/12 (2006.01)
Patent
CA 2705086
In a hydrocarbon producing wellbore, liquids (oil, condensate, water of mixtures thereof) from the formation may accumulate and build up a hydrostatic pressure gradient, which can kill gas production. Various embodiments of the present invention include a plunger lift system that can remove said formation liquids from a wellbore. A piston, including a sleeve with a hollow passage may travel downhole, accumulate formation liquids and utilizing the gas pressure deliver said formation liquids to the top of the wellbore for removal. The piston face may be one single wall that closes the hollow passage or the piston face may be comprised of a plug and an seat that unite to form a complete piston face downhole. Aspects of the plunger lift system, for example the sleeve and or the plug may be at least partially formed from materials that are buoyant in the formation liquids.
Bennett Jones Llp
Integrated Production Services Ltd.
LandOfFree
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