Seal assembly for dual string coil tubing injection and method of use
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United States of America Patent
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-
Jan 28, 2003
Grant Date -
Aug 8, 2002
app pub date -
Feb 8, 2001
filing date -
Feb 8, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A seal assembly for dual string coil tubing injection into a subterranean well includes a seal plate having first and second bores with annular seals for providing a high-pressure fluid seal around first and second coil tubing strings inserted through the respective bores. The seal plate is adapted to be connected directly to a wellhead, or a lubricator if a downhole tool is connected to either one, or both of the first and second coil tubing strings. The seal assembly further includes passages for supplying lubricant to the first and second annular seals to lubricate the respective seals while the respective first and second coil tubing strings are injected into and extracted from the wellhead.
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