CA980422A - Pipeline signalling system and techniques - Google Patents

Pipeline signalling system and techniques

Info

Publication number
CA980422A
CA980422A CA181,449A CA181449A CA980422A CA 980422 A CA980422 A CA 980422A CA 181449 A CA181449 A CA 181449A CA 980422 A CA980422 A CA 980422A
Authority
CA
Canada
Prior art keywords
pipeline
techniques
signalling system
signalling
pipeline signalling
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
CA181,449A
Other versions
CA181449S (en
Inventor
Frederick V. Topping
David W. Potter
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.)
TransCanada Pipelines Ltd
Original Assignee
TransCanada Pipelines Ltd
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 TransCanada Pipelines Ltd filed Critical TransCanada Pipelines Ltd
Priority to CA181,449A priority Critical patent/CA980422A/en
Priority to AU71088/74A priority patent/AU474592B2/en
Priority to NL7410156A priority patent/NL158931B/en
Priority to GB3739374A priority patent/GB1475538A/en
Priority to FR7430054A priority patent/FR2244125B1/fr
Application granted granted Critical
Publication of CA980422A publication Critical patent/CA980422A/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
    • G01V3/08—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
    • G01V3/108—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 the emitter and the receiver coils or loops being uncoupled by positioning them perpendicularly to each other

Landscapes

  • 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)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
CA181,449A 1973-09-19 1973-09-19 Pipeline signalling system and techniques Expired CA980422A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA181,449A CA980422A (en) 1973-09-19 1973-09-19 Pipeline signalling system and techniques
AU71088/74A AU474592B2 (en) 1973-09-19 1974-07-10 Pipeline signalling systems and techniques
NL7410156A NL158931B (en) 1973-09-19 1974-07-29 METHOD OF SIGNALING A PIPELINE BOAT.
GB3739374A GB1475538A (en) 1973-09-19 1974-08-27 Pipeline signalling systems and techniques
FR7430054A FR2244125B1 (en) 1973-09-19 1974-09-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA181,449A CA980422A (en) 1973-09-19 1973-09-19 Pipeline signalling system and techniques

Publications (1)

Publication Number Publication Date
CA980422A true CA980422A (en) 1975-12-23

Family

ID=4097847

Family Applications (1)

Application Number Title Priority Date Filing Date
CA181,449A Expired CA980422A (en) 1973-09-19 1973-09-19 Pipeline signalling system and techniques

Country Status (5)

Country Link
AU (1) AU474592B2 (en)
CA (1) CA980422A (en)
FR (1) FR2244125B1 (en)
GB (1) GB1475538A (en)
NL (1) NL158931B (en)

Also Published As

Publication number Publication date
FR2244125B1 (en) 1977-11-04
FR2244125A1 (en) 1975-04-11
AU474592B2 (en) 1976-07-29
GB1475538A (en) 1977-06-01
NL158931B (en) 1978-12-15
AU7108874A (en) 1976-01-15
NL7410156A (en) 1975-03-21

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