WO2002075360A3 - Method for locating and inspecting underground or other non-visible non-electrically conductive pipes - Google Patents

Method for locating and inspecting underground or other non-visible non-electrically conductive pipes Download PDF

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Publication number
WO2002075360A3
WO2002075360A3 PCT/US2002/007684 US0207684W WO02075360A3 WO 2002075360 A3 WO2002075360 A3 WO 2002075360A3 US 0207684 W US0207684 W US 0207684W WO 02075360 A3 WO02075360 A3 WO 02075360A3
Authority
WO
WIPO (PCT)
Prior art keywords
locating
electrically conductive
electrolyte
underground
pipe
Prior art date
Application number
PCT/US2002/007684
Other languages
French (fr)
Other versions
WO2002075360A2 (en
Inventor
Jared H Struse
Daniel P Struse
Original Assignee
Jared H Struse
Daniel P Struse
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 US09/809,966 external-priority patent/US6734674B1/en
Application filed by Jared H Struse, Daniel P Struse filed Critical Jared H Struse
Priority to AU2002306712A priority Critical patent/AU2002306712A1/en
Publication of WO2002075360A2 publication Critical patent/WO2002075360A2/en
Publication of WO2002075360A3 publication Critical patent/WO2002075360A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

A method for locating and inspecting underground or other nonvisible, non electrically conductive pipes (12). An electrolyte (20) is introduced into the pipe (12) and a time varying electrical signal is applied to the fluid as in a standard prior art method for locating underground pipes (12), wherein proximity to the pipe (12) is determined by assessing the strength of the electromagnetic field produced thereby. The method also provides for detecting leaks by introducing the electrolyte (20) relative slowly, to ensure that a pool of the electrolyte (20) accumulates outside the pipe adjacent the leak.
PCT/US2002/007684 2001-03-16 2002-03-15 Method for locating and inspecting underground or other non-visible non-electrically conductive pipes WO2002075360A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002306712A AU2002306712A1 (en) 2001-03-16 2002-03-15 Method for locating and inspecting underground or other non-visible non-electrically conductive pipes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/809,966 2001-03-16
US09/809,966 US6734674B1 (en) 2000-08-14 2001-03-16 Method for locating and inspecting underground or other non-visible non-electrically conductive pipes

Publications (2)

Publication Number Publication Date
WO2002075360A2 WO2002075360A2 (en) 2002-09-26
WO2002075360A3 true WO2002075360A3 (en) 2003-03-06

Family

ID=25202621

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/007684 WO2002075360A2 (en) 2001-03-16 2002-03-15 Method for locating and inspecting underground or other non-visible non-electrically conductive pipes

Country Status (2)

Country Link
AU (1) AU2002306712A1 (en)
WO (1) WO2002075360A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2998379B1 (en) * 2012-11-22 2015-01-30 Electricite De France METHOD AND SYSTEM FOR DETECTING A UNDERGROUND FLUID VEIN
CN108732628B (en) * 2018-04-20 2020-11-17 中石化石油工程技术服务有限公司 High-density electrical method pipeline detection observation method and system along pipeline trend

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735344A1 (en) * 1977-08-05 1979-02-15 Hans Josef Klimkeit Transceiver for locating buried cables - passes medium frequency current through cable and detects stray field
BE881807A (en) * 1980-02-19 1980-06-16 Saive Marcel METHOD FOR LOCATING THE ROUTE IN THE GROUND OF NON-METAL PIPES

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735344A1 (en) * 1977-08-05 1979-02-15 Hans Josef Klimkeit Transceiver for locating buried cables - passes medium frequency current through cable and detects stray field
BE881807A (en) * 1980-02-19 1980-06-16 Saive Marcel METHOD FOR LOCATING THE ROUTE IN THE GROUND OF NON-METAL PIPES

Also Published As

Publication number Publication date
WO2002075360A2 (en) 2002-09-26
AU2002306712A1 (en) 2002-10-03

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