CA2055548C - Appareil de chauffage electrique a basse resistance - Google Patents

Appareil de chauffage electrique a basse resistance Download PDF

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Publication number
CA2055548C
CA2055548C CA 2055548 CA2055548A CA2055548C CA 2055548 C CA2055548 C CA 2055548C CA 2055548 CA2055548 CA 2055548 CA 2055548 A CA2055548 A CA 2055548A CA 2055548 C CA2055548 C CA 2055548C
Authority
CA
Canada
Prior art keywords
heater
electrical
heating cable
sheath
core
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.)
Expired - Lifetime
Application number
CA 2055548
Other languages
English (en)
Other versions
CA2055548A1 (fr
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
Shell Canada Ltd
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 Shell Canada Ltd filed Critical Shell Canada Ltd
Publication of CA2055548A1 publication Critical patent/CA2055548A1/fr
Application granted granted Critical
Publication of CA2055548C publication Critical patent/CA2055548C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Resistance Heating (AREA)
CA 2055548 1990-12-04 1991-11-14 Appareil de chauffage electrique a basse resistance Expired - Lifetime CA2055548C (fr)

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
US07/637,859 US5065818A (en) 1991-01-07 1991-01-07 Subterranean heaters
US637,859 1991-01-07

Publications (2)

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

Family

ID=27089116

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2055548 Expired - Lifetime CA2055548C (fr) 1990-12-04 1991-11-14 Appareil de chauffage electrique a basse resistance

Country Status (2)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3006364A1 (fr) * 2017-05-29 2018-11-29 McMillan-McGee Corp Appareil de chauffage a induction electromagnetique
CN112081554A (zh) * 2020-09-22 2020-12-15 山东天汇石油技术有限公司 稠油无杆潜油泵井的降粘装置的使用方法
CN114166912B (zh) * 2021-11-17 2024-02-27 鞍钢联众(广州)不锈钢有限公司 一种NOx分析气体检测器的整定方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1006596B (zh) * 1985-12-09 1990-01-24 国际壳牌研究有限公司 金属外铠装的电阻加热器
CN1009670B (zh) * 1985-12-09 1990-09-19 国际壳牌研究有限公司 高温长距离地下区间加热方法和装置

Also Published As

Publication number Publication date
CA2055548A1 (fr) 1992-06-05
CN1062017A (zh) 1992-06-17
CN1049037C (zh) 2000-02-02

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Legal Events

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

Effective date: 20121202