HK1007004A1 - Detector for detecting discontinuities in a pipe - Google Patents

Detector for detecting discontinuities in a pipe Download PDF

Info

Publication number
HK1007004A1
HK1007004A1 HK98106165A HK98106165A HK1007004A1 HK 1007004 A1 HK1007004 A1 HK 1007004A1 HK 98106165 A HK98106165 A HK 98106165A HK 98106165 A HK98106165 A HK 98106165A HK 1007004 A1 HK1007004 A1 HK 1007004A1
Authority
HK
Hong Kong
Prior art keywords
sonde
detector
coils
rod
pipe
Prior art date
Application number
HK98106165A
Other languages
German (de)
English (en)
French (fr)
Chinese (zh)
Other versions
HK1007004B (en
Inventor
V Philpot Frank
Original Assignee
Bg Public Limited Company
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 Bg Public Limited Company filed Critical Bg Public Limited Company
Publication of HK1007004A1 publication Critical patent/HK1007004A1/en
Publication of HK1007004B publication Critical patent/HK1007004B/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
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
    • G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
    • G01V3/107—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops using compensating coil or loop arrangements

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Pipeline Systems (AREA)
HK98106165.9A 1988-03-26 1998-06-23 Detector for detecting discontinuities in a pipe HK1007004B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888807301A GB8807301D0 (en) 1988-03-26 1988-03-26 Detector
GB8807301 1988-03-26

Publications (2)

Publication Number Publication Date
HK1007004A1 true HK1007004A1 (en) 1999-03-26
HK1007004B HK1007004B (en) 1999-03-26

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107843934A (zh) * 2017-10-26 2018-03-27 中石化石油工程技术服务有限公司 一种瞬变电磁测井仪器用电磁探头

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107843934A (zh) * 2017-10-26 2018-03-27 中石化石油工程技术服务有限公司 一种瞬变电磁测井仪器用电磁探头

Also Published As

Publication number Publication date
EP0541520A3 (enExample) 1994-04-13
WO1989009417A1 (en) 1989-10-05
US5302895A (en) 1994-04-12
EP0541520A2 (en) 1993-05-12
AU3426289A (en) 1989-10-16
EP0409882A1 (en) 1991-01-30
GB8807301D0 (en) 1988-04-27
DE68926512D1 (de) 1996-06-20
EP0541520B1 (en) 1996-05-15
GB2235302B (en) 1992-08-19
DE68915275D1 (de) 1994-06-16
US5473246A (en) 1995-12-05
JP2834702B2 (ja) 1998-12-14
EP0409882B1 (en) 1994-05-11
HK1007003A1 (en) 1999-03-26
DE68915275T2 (de) 1994-09-01
GB2235302A (en) 1991-02-27
JPH03503682A (ja) 1991-08-15
JP2842910B2 (ja) 1999-01-06
US5367258A (en) 1994-11-22
GB9020585D0 (en) 1990-12-19
DE68926512T2 (de) 1996-11-21
JPH08327606A (ja) 1996-12-13

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20040321

PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)