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GB2136131B - Electromagnetic surveying of pipes and cables - Google Patents
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GB2136131B - Electromagnetic surveying of pipes and cables - Google Patents

Electromagnetic surveying of pipes and cables

Info

Publication number
GB2136131B
GB2136131B GB08403185A GB8403185A GB2136131B GB 2136131 B GB2136131 B GB 2136131B GB 08403185 A GB08403185 A GB 08403185A GB 8403185 A GB8403185 A GB 8403185A GB 2136131 B GB2136131 B GB 2136131B
Authority
GB
United Kingdom
Prior art keywords
cables
pipes
electromagnetic surveying
surveying
electromagnetic
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
Application number
GB08403185A
Other versions
GB8403185D0 (en
GB2136131A (en
Inventor
Mark Ian Howell
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.)
Individual
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 GB838304330A external-priority patent/GB8304330D0/en
Application filed by Individual filed Critical Individual
Priority to GB08403185A priority Critical patent/GB2136131B/en
Publication of GB8403185D0 publication Critical patent/GB8403185D0/en
Publication of GB2136131A publication Critical patent/GB2136131A/en
Application granted granted Critical
Publication of GB2136131B publication Critical patent/GB2136131B/en
Expired legal-status Critical Current

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
    • G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
    • G01V3/06—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current using AC

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
GB08403185A 1983-02-16 1984-02-07 Electromagnetic surveying of pipes and cables Expired GB2136131B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08403185A GB2136131B (en) 1983-02-16 1984-02-07 Electromagnetic surveying of pipes and cables

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838304330A GB8304330D0 (en) 1983-02-16 1983-02-16 Electromagnetic surveying of pipes and cables
GB08403185A GB2136131B (en) 1983-02-16 1984-02-07 Electromagnetic surveying of pipes and cables

Publications (3)

Publication Number Publication Date
GB8403185D0 GB8403185D0 (en) 1984-03-14
GB2136131A GB2136131A (en) 1984-09-12
GB2136131B true GB2136131B (en) 1987-06-03

Family

ID=26285257

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08403185A Expired GB2136131B (en) 1983-02-16 1984-02-07 Electromagnetic surveying of pipes and cables

Country Status (1)

Country Link
GB (1) GB2136131B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8420863D0 (en) * 1984-08-16 1984-09-19 Wardell Transport Ltd Assessing condition of hidden elements
SE455820B (en) * 1985-12-09 1988-08-08 Geotronics Metaltech Ab DEVICE FOR DETECTING THE SLAUGHTER LEVEL IN A METAL BATH
SE463893B (en) * 1987-09-28 1991-02-04 Geotronics Ab DEVICE FOR DETECTING THE LEVEL OF A BATTERY SURFACE OF A SMALL METAL BATH
GB2215063A (en) * 1988-02-18 1989-09-13 Tokyo Gas Co Ltd Detecting buried conductors
US5093622A (en) * 1989-03-17 1992-03-03 Minnesota Mining And Manufacturing Company Method and apparatus for determining direction to and position of an underground conductor
DE4307453A1 (en) * 1993-03-10 1994-09-15 Ruhrgas Ag Method and device for locating a line

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB528568A (en) * 1938-02-26 1940-11-01 British Western Union Ltd Improvements in or relating to electromagnetic apparatus for determining location of concealed bodies
GB2119094A (en) * 1982-03-17 1983-11-09 British Gas Corp Apparatus for measuring defects in insulation coatings

Also Published As

Publication number Publication date
GB8403185D0 (en) 1984-03-14
GB2136131A (en) 1984-09-12

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20040206