CA2315730A1 - Centralizer for sucker rod strings - Google Patents

Centralizer for sucker rod strings Download PDF

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Publication number
CA2315730A1
CA2315730A1 CA 2315730 CA2315730A CA2315730A1 CA 2315730 A1 CA2315730 A1 CA 2315730A1 CA 2315730 CA2315730 CA 2315730 CA 2315730 A CA2315730 A CA 2315730A CA 2315730 A1 CA2315730 A1 CA 2315730A1
Authority
CA
Canada
Prior art keywords
centralizer
sleeve
sucker rod
single piece
sucker
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 2315730
Other languages
French (fr)
Other versions
CA2315730C (en
Inventor
Robert A. R. Mills
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.)
Schlumberger Lift Solutions Canada Ltd
Original Assignee
Kudu Industries Inc
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
Application filed by Kudu Industries Inc filed Critical Kudu Industries Inc
Publication of CA2315730A1 publication Critical patent/CA2315730A1/en
Application granted granted Critical
Publication of CA2315730C publication Critical patent/CA2315730C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

A centralizer for sucker rod strings is disclosed. The invention has particular use for centralizing sucker rods in a tubing string in connection with a downhole rotary pump driven by a rotating rod string. The single piece, double box centralizer has internally threaded ends for attachment to the threaded pin ends of sucker rod string components. A central shaft portion of the centralizer has a reduced diameter over which a centralizer sleeve is placed. The sleeve is kept in place by shoulders of the larger diameter ends of the centralizer. The centralizer sleeve may be a single piece snap-on type made of a flexible material, or the sleeve can be made up of two or more pieces which snap together.
CA 2315730 1999-08-06 2000-08-04 Centralizer for sucker rod strings Expired - Lifetime CA2315730C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36970499A 1999-08-06 1999-08-06
US09/369,704 1999-08-06

Publications (2)

Publication Number Publication Date
CA2315730A1 true CA2315730A1 (en) 2001-02-06
CA2315730C CA2315730C (en) 2006-10-31

Family

ID=23456559

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2315730 Expired - Lifetime CA2315730C (en) 1999-08-06 2000-08-04 Centralizer for sucker rod strings

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CA (1) CA2315730C (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102031933B (en) * 2009-09-24 2013-03-13 江苏宏泰石化机械有限公司 Serial anti-fall centralizer
CN103334705A (en) * 2013-08-01 2013-10-02 南通奥里斯特机械有限公司 Novel sucker rod centering device
CN107630665A (en) * 2017-06-22 2018-01-26 泰州市时代科研设备仪器有限公司 A kind of abrasion-resistant alloy protective pipe connector of oil-pumping rod with guide function
CN107642339A (en) * 2017-06-22 2018-01-30 泰州市时代科研设备仪器有限公司 Multifunctional pumping rod abrasion-resistant alloy protective pipe connector
CN108843256A (en) * 2018-08-14 2018-11-20 河南福侨石油装备有限公司 A kind of fixing sucker rod centralizer and preparation method thereof
WO2021148076A1 (en) * 2020-01-21 2021-07-29 MTU Aero Engines AG Method for repairing a sealing-air seal apparatus for a turbomachine
CN113982502A (en) * 2021-09-29 2022-01-28 天津市金升石油机械设备有限公司 Screw pump wear preventer and manufacturing method thereof
CN114718509A (en) * 2021-01-05 2022-07-08 中国石油天然气股份有限公司 Wax-proof and scale-proof device for oil well

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010025491A1 (en) 2010-06-29 2011-12-29 Netzsch-Mohnopumpen Gmbh Retention device for preventing sedimentation in boreholes

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102031933B (en) * 2009-09-24 2013-03-13 江苏宏泰石化机械有限公司 Serial anti-fall centralizer
CN103334705A (en) * 2013-08-01 2013-10-02 南通奥里斯特机械有限公司 Novel sucker rod centering device
CN107630665A (en) * 2017-06-22 2018-01-26 泰州市时代科研设备仪器有限公司 A kind of abrasion-resistant alloy protective pipe connector of oil-pumping rod with guide function
CN107642339A (en) * 2017-06-22 2018-01-30 泰州市时代科研设备仪器有限公司 Multifunctional pumping rod abrasion-resistant alloy protective pipe connector
CN108843256A (en) * 2018-08-14 2018-11-20 河南福侨石油装备有限公司 A kind of fixing sucker rod centralizer and preparation method thereof
WO2021148076A1 (en) * 2020-01-21 2021-07-29 MTU Aero Engines AG Method for repairing a sealing-air seal apparatus for a turbomachine
CN114718509A (en) * 2021-01-05 2022-07-08 中国石油天然气股份有限公司 Wax-proof and scale-proof device for oil well
CN114718509B (en) * 2021-01-05 2023-11-28 中国石油天然气股份有限公司 Wax-proof and scale-proof device for oil well
CN113982502A (en) * 2021-09-29 2022-01-28 天津市金升石油机械设备有限公司 Screw pump wear preventer and manufacturing method thereof
CN113982502B (en) * 2021-09-29 2024-03-29 天津市金升石油机械设备有限公司 Screw pump wear-proof device and manufacturing method thereof

Also Published As

Publication number Publication date
CA2315730C (en) 2006-10-31

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Effective date: 20200804