Wells – Processes – Heating – cooling or insulating
Reexamination Certificate
2011-04-26
2011-04-26
Kreck, John (Department: 3672)
Wells
Processes
Heating, cooling or insulating
C166S057000
Reexamination Certificate
active
07931086
ABSTRACT:
Methods and systems for heating a subsurface formation are described herein. A heating system for a subsurface formation includes a sealed conduit positioned in an opening in the formation and a heat source. The sealed conduit includes a heat transfer fluid. The heat source provides heat to a portion of the sealed conduit to change phase of the heat transfer fluid from a liquid to a vapor. The vapor in the sealed conduit rises in the sealed conduit, condenses to transfer heat to the formation and returns to the conduit portion as a liquid.
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Nguyen Scott Vinh
Vinegar Harold J.
Kreck John
Shell Oil Company
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