Methods for forming wellbores in heated formations
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United States of America Patent
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Sep 25, 2012
Grant Date -
Aug 6, 2009
app pub date -
Oct 13, 2008
filing date -
Oct 19, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for forming a wellbore in a heated formation includes flowing liquid cooling fluid to a bottom hole assembly in a wellbore in a heated formation. At least a portion of the liquid cooling fluid is vaporized at or near a region to be cooled. Vaporizing the liquid cooling fluid absorbs heat from the region to be cooled.
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