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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
Issue Date:
Research Org.:
Shell Oil Company (Houston, TX)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014919
Patent Number(s):
7831133
Application Number:
US Patent Application 11/409,523
Assignee:
Shell Oil Company (Houston, TX)
Patent Classifications (CPCs):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
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 = {Tue Nov 09 00:00:00 EST 2010},
month = {Tue Nov 09 00:00:00 EST 2010}
}

Works referenced in this record:

An Analog Computer for Studying Heat Transfer During a Thermal Recovery Process
journal, December 1955


The Characteristics of a Low Temperature In Situ Shale Oil
conference, April 2013


Evaluation of downhole electric impedance heating systems for paraffin control in oil wells
journal, January 1992


Electrical Heating With Horizontal Wells, The Heat Transfer Problem
conference, April 2013


Operating Laboratory Oil Shale Retorts In An In-Situ Mode
conference, April 2013


Kinetics of oil generation from Colorado oil shale
journal, June 1978


New Books
journal, November 1953


Direct Production of Low Pour Point High Gravity Shale Oil
journal, March 1967