CA2293500C - Procede de detection de corrosion dans des pipelines et analogue par analyse comparative d'impulsions de propagation - Google Patents

Procede de detection de corrosion dans des pipelines et analogue par analyse comparative d'impulsions de propagation Download PDF

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Publication number
CA2293500C
CA2293500C CA2293500A CA2293500A CA2293500C CA 2293500 C CA2293500 C CA 2293500C CA 2293500 A CA2293500 A CA 2293500A CA 2293500 A CA2293500 A CA 2293500A CA 2293500 C CA2293500 C CA 2293500C
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CA
Canada
Prior art keywords
wave form
wave
pulses
wave forms
far side
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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 - Fee Related
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CA2293500A
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English (en)
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CA2293500A1 (fr
Inventor
Gale D. Burnett
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.)
WaveTrue Inc
Original Assignee
PROFILE TECHNOLOGIES Inc
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Publication of CA2293500A1 publication Critical patent/CA2293500A1/fr
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Publication of CA2293500C publication Critical patent/CA2293500C/fr
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light

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  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

L'invention concerne un procédé de détection de corrosion sur un élément allongé (10) tel qu'un tuyau (10). Des impulsions électriques lointaines et proches sont transmises dans un tuyau (10) magnétiquement perméable à des endroits espacés de façon à se déplacer les unes vers les autres. Ces impulsions sont synchronisées de manière à se recouper en divers endroits sur le tuyau (10). Les formes d'ondes qui en résultent sont analysées par combinaison de formes d'ondes adjacentes résultant de l'intersection d'impulsions à des endroits espacés. On analyse deux formes d'ondes combinées en soustrayant l'un de l'autre de façon à produire une forme d'onde de différence, et on compare les formes d'ondes de différence pour détecter la corrosion.
CA2293500A 1997-06-04 1998-06-04 Procede de detection de corrosion dans des pipelines et analogue par analyse comparative d'impulsions de propagation Expired - Fee Related CA2293500C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US4866097P 1997-06-04 1997-06-04
US60/048,660 1997-06-04
PCT/US1998/011683 WO1998055877A1 (fr) 1997-06-04 1998-06-04 Procede de detection de corrosion dans des pipelines et analogue par analyse comparative d'impulsions de propagation

Publications (2)

Publication Number Publication Date
CA2293500A1 CA2293500A1 (fr) 1998-12-10
CA2293500C true CA2293500C (fr) 2010-12-14

Family

ID=21955747

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2293500A Expired - Fee Related CA2293500C (fr) 1997-06-04 1998-06-04 Procede de detection de corrosion dans des pipelines et analogue par analyse comparative d'impulsions de propagation

Country Status (4)

Country Link
EP (1) EP0998678A4 (fr)
AU (1) AU7954598A (fr)
CA (1) CA2293500C (fr)
WO (1) WO1998055877A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050007121A1 (en) * 2003-05-06 2005-01-13 Burnett Gale D. Systems and methods for non-destructively testing conductive members employing electromagnetic back scattering
US9207192B1 (en) 2009-03-19 2015-12-08 Wavetrue, Inc. Monitoring dielectric fill in a cased pipeline

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3511076A1 (de) * 1985-03-27 1986-10-09 Kopp AG International Pipeline Services, 4450 Lingen Molch fuer elektromagnetische pruefungen an rohrleitungswandungen aus stahl sowie verfahren hierzu
US4970467A (en) * 1989-04-27 1990-11-13 Burnett Gale D Apparatus and method for pulse propagation analysis of a pipeline or the like
US5243294A (en) * 1991-10-25 1993-09-07 Pipeline Profiles, Ltd. Methods of and apparatus for detecting the character and location of anomalies along a conductive member using pulse propagation
US5270661A (en) * 1991-10-25 1993-12-14 Pipeline Profiles, Ltd. Method of detecting a conductor anomaly by applying pulses along the conductor in opposite directions
US5189374A (en) * 1991-10-25 1993-02-23 Burnett Gale D Method for pulse propagation analysis of a well casing or the like by transmitted pulse interaction
DE4141123C1 (fr) * 1991-12-13 1993-03-18 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe, De
AU5312296A (en) * 1995-03-14 1996-10-02 Profile Technologies, Inc. Reflectometry methods for insulated pipes

Also Published As

Publication number Publication date
AU7954598A (en) 1998-12-21
EP0998678A1 (fr) 2000-05-10
EP0998678A4 (fr) 2002-02-13
CA2293500A1 (fr) 1998-12-10
WO1998055877A1 (fr) 1998-12-10

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