CA2055548A1 - Low resistance electrical heater - Google Patents

Low resistance electrical heater

Info

Publication number
CA2055548A1
CA2055548A1 CA 2055548 CA2055548A CA2055548A1 CA 2055548 A1 CA2055548 A1 CA 2055548A1 CA 2055548 CA2055548 CA 2055548 CA 2055548 A CA2055548 A CA 2055548A CA 2055548 A1 CA2055548 A1 CA 2055548A1
Authority
CA
Canada
Prior art keywords
electrical heater
low resistance
resistance electrical
heating
heating cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2055548
Other languages
French (fr)
Other versions
CA2055548C (en
Inventor
Cornelis Franciscus Henricus Van Egmond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Canada Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/622,025 external-priority patent/US5060287A/en
Priority claimed from US07/637,859 external-priority patent/US5065818A/en
Application filed by Individual filed Critical Individual
Publication of CA2055548A1 publication Critical patent/CA2055548A1/en
Application granted granted Critical
Publication of CA2055548C publication Critical patent/CA2055548C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Resistance Heating (AREA)

Abstract

A subterranean electrical heater comprising an electrical heating cable (9, 10) arranged in a partly cased well borehole (1) having a heating core comprising about 6 percent by weight of nickel and about 94 percent by weight of copper, a mineral insulation surrounding the heating core, a sheath surrounding the mineral insulation, cement (23) securing the heating cable (9, 10) in the well borehole (1) in the formation zone (22) to be heated;
and a means (1, 2) to supply electrical power through the heating cable (9, 10).
CA 2055548 1990-12-04 1991-11-14 Low resistance electrical heater Expired - Lifetime CA2055548C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US07/622,025 US5060287A (en) 1990-12-04 1990-12-04 Heater utilizing copper-nickel alloy core
US622,025 1990-12-04
US637,859 1991-01-07
US07/637,859 US5065818A (en) 1991-01-07 1991-01-07 Subterranean heaters

Publications (2)

Publication Number Publication Date
CA2055548A1 true CA2055548A1 (en) 1992-06-05
CA2055548C CA2055548C (en) 2001-05-08

Family

ID=27089116

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2055548 Expired - Lifetime CA2055548C (en) 1990-12-04 1991-11-14 Low resistance electrical heater

Country Status (2)

Country Link
CN (1) CN1049037C (en)
CA (1) CA2055548C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3006364A1 (en) * 2017-05-29 2018-11-29 McMillan-McGee Corp Electromagnetic induction heater
CN112081554A (en) * 2020-09-22 2020-12-15 山东天汇石油技术有限公司 Using method of viscosity reduction device of thick oil rodless submersible pump well
CN114166912B (en) * 2021-11-17 2024-02-27 鞍钢联众(广州)不锈钢有限公司 Setting method of NOx analysis gas detector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1009670B (en) * 1985-12-09 1990-09-19 国际壳牌研究有限公司 Method and device for heating underground region of long distance up to high temp.
CN1006596B (en) * 1985-12-09 1990-01-24 国际壳牌研究有限公司 Metal armoured resistance heater

Also Published As

Publication number Publication date
CA2055548C (en) 2001-05-08
CN1049037C (en) 2000-02-02
CN1062017A (en) 1992-06-17

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202