Circulated heated transfer fluid heating of subsurface hydrocarbon formations
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United States of America Patent
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Oct 9, 2012
Grant Date -
Apr 22, 2010
app pub date -
Oct 9, 2009
filing date -
Oct 13, 2008
priority date (Note) -
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Abstract
A method of heating a subsurface formation includes introducing a molten salt into a first passageway of a conduit-in-conduit heater at a first location. The molten salt is passed through the conduit-in-conduit heater in the formation to a second location. Heat transfers from the molten salt to a treatment area during passage of the molten salt through the conduit-in-conduit heater. The molten salt is removed from the conduit-in-conduit heater at a second location spaced away from the first location.
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