Method and apparatus for reducing plunger seal wear on automatic casing swab lift systems
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United States of America Patent
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Oct 28, 2003
Grant Date -
Nov 21, 2002
app pub date -
Apr 6, 2001
filing date -
Apr 6, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An apparatus is disclosed for improving plunger seal life on a casing swab system. The apparatus includes a diameter adapter disposed between an upper end of a wellbore casing and a lubricator adapted to receive a plunger therein. The diameter adapter is configured to provide a substantially constant internal diameter between the lubricator and the upper end of the casing. A method is also disclosed which includes retaining a casing swab plunger in a lubricator adapted to receive it for at least an amount of time sufficient to enable entrapped gas and fluids substantially to escape from the plunger seal material.
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