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Title: Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration

Abstract

A heating system for a subsurface formation is described. The heating system includes a first heater, a second heater, and a third heater placed in an opening in the subsurface formation. Each heater includes: an electrical conductor; an insulation layer at least partially surrounding the electrical conductor; and an electrically conductive sheath at least partially surrounding the insulation layer. The electrical conductor is electrically coupled to the sheath at a lower end portion of the heater. The lower end portion is the portion of the heater distal from a surface of the opening. The first heater, the second heater, and the third heater are electrically coupled at the lower end portions of the heaters. The first heater, the second heater, and the third heater are configured to be electrically coupled in a three-phase wye configuration.

Inventors:
 [1];  [2]
  1. Bellaire, TX
  2. Palo Alto, CA
Publication Date:
Research Org.:
Shell Oil Company (Houston, TX)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014919
Patent Number(s):
7,831,133
Application Number:
US Patent Application 11/409,523
Assignee:
Shell Oil Company (Houston, TX)
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Vinegar, Harold J, and Sandberg, Chester Ledlie. Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration. United States: N. p., 2010. Web.
Vinegar, Harold J, & Sandberg, Chester Ledlie. Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration. United States.
Vinegar, Harold J, and Sandberg, Chester Ledlie. Tue . "Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration". United States. https://www.osti.gov/servlets/purl/1014919.
@article{osti_1014919,
title = {Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration},
author = {Vinegar, Harold J and Sandberg, Chester Ledlie},
abstractNote = {A heating system for a subsurface formation is described. The heating system includes a first heater, a second heater, and a third heater placed in an opening in the subsurface formation. Each heater includes: an electrical conductor; an insulation layer at least partially surrounding the electrical conductor; and an electrically conductive sheath at least partially surrounding the insulation layer. The electrical conductor is electrically coupled to the sheath at a lower end portion of the heater. The lower end portion is the portion of the heater distal from a surface of the opening. The first heater, the second heater, and the third heater are electrically coupled at the lower end portions of the heaters. The first heater, the second heater, and the third heater are configured to be electrically coupled in a three-phase wye configuration.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {11}
}

Patent:

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