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Subsurface connection methods for subsurface heaters

United States Patent

7,860,377
December 28, 2010
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A system for heating a subsurface formation is described. The system includes a first elongated heater in a first opening in the formation. The first elongated heater includes an exposed metal section in a portion of the first opening. The portion is below a layer of the formation to be heated. The exposed metal section is exposed to the formation. A second elongated heater is in a second opening in the formation. The second opening connects to the first opening at or near the portion of the first opening below the layer to be heated. At least a portion of an exposed metal section of the second elongated heater is electrically coupled to at least a portion of the exposed metal section of the first elongated heater in the portion of the first opening below the layer to be heated.
Vinegar; Harold J. (Bellaire, TX), Bass; Ronald Marshall (Houston, TX), Kim; Dong Sub (Sugar Land, TX), Mason; Stanley Leroy (Allen, TX), Stegemeier; George Leo (Houston, TX), Keltner; Thomas Joseph (Spring, TX), Carl, Jr.; Frederick Gordon (Houston, TX)
Shell Oil Company (Houston, TX)
11/ 409,559
20070045267
April 21, 2006
GOVERNMENT INTEREST The Government has certain rights in this invention pursuant to Agreement No. ERD-05-2516 between UT-Battelle, LLC, operating under prime contract No. DE-ACO5-00OR22725 for the US Department of Energy and Shell Exploration and Production Company.