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Title: Heating systems for heating subsurface formations

Patent ·
OSTI ID:1016684

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.

Research Organization:
Shell Oil Company (Houston, TX)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Shell Oil Company (Houston, TX)
Patent Number(s):
7,931,086
Application Number:
US Patent Application 12/106,060
OSTI ID:
1016684
Country of Publication:
United States
Language:
English

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