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

Abstract

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.

Inventors:
 [1]
  1. Bellaire, TX
Issue Date:
Research Org.:
Shell Oil Company (Houston, TX)
Sponsoring Org.:
USDOE
OSTI Identifier:
1037002
Patent Number(s):
8113272
Application Number:
12/250,352
Assignee:
Shell Oil Company (Houston, TX)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Vinegar, Harold J. Three-phase heaters with common overburden sections for heating subsurface formations. United States: N. p., 2012. Web.
Vinegar, Harold J. Three-phase heaters with common overburden sections for heating subsurface formations. United States.
Vinegar, Harold J. Tue . "Three-phase heaters with common overburden sections for heating subsurface formations". United States. https://www.osti.gov/servlets/purl/1037002.
@article{osti_1037002,
title = {Three-phase heaters with common overburden sections for heating subsurface formations},
author = {Vinegar, Harold J},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {2}
}

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