Three-phase heaters with common overburden sections for heating subsurface formations

Vinegar, Harold J

Title: Three-phase heaters with common overburden sections for heating subsurface formations

Patent · Tue Feb 14 00:00:00 EST 2012

OSTI ID:1037002

Vinegar, Harold J ^[1]

Bellaire, TX

A heating system for a subsurface formation is described. The heating system includes three substantially u-shaped heaters with first end portions of the heaters being electrically coupled to a single, three-phase wye transformer and second end portions of the heaters being electrically coupled to each other and/or to ground. The three heaters may enter the formation through a first common wellbore and exit the formation through a second common wellbore so that the magnetic fields of the three heaters at least partially cancel out in the common wellbores.

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Research Organization:: Shell Oil Company (Houston, TX)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC04-94AL85000

Assignee:: Shell Oil Company (Houston, TX)

Patent Number(s):: 8,113,272

Application Number:: 12/250,352

OSTI ID:: 1037002

Country of Publication:: United States

Language:: English

References (23)

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