Cryogenic injection compositions, systems and methods for cryogenically modulating flow in a conduit
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United States of America Patent
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Jun 13, 2017
Grant Date -
Jun 20, 2013
app pub date -
Dec 14, 2012
filing date -
Dec 16, 2011
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Abstract
Provided are cryogenic injection compositions, methods and systems to introduce a cryogenic injection composition into a fluid within a conduit such that at least a portion of the temperature of the fluid is reduced to a temperature below which at least a portion of the fluid becomes a solid thereby reversibly plugging the conduit. Also provided are methods and systems for cooling or freezing a conduit and a fluid therein using a pressurized fluid cryogen as a thermal transfer fluid for controlled removal of thermal energy from a thermal conducting metal conduit and a fluid contained therein.
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