AU474592B2 - Pipeline signalling systems and techniques - Google Patents

Pipeline signalling systems and techniques

Info

Publication number
AU474592B2
AU474592B2 AU71088/74A AU7108874A AU474592B2 AU 474592 B2 AU474592 B2 AU 474592B2 AU 71088/74 A AU71088/74 A AU 71088/74A AU 7108874 A AU7108874 A AU 7108874A AU 474592 B2 AU474592 B2 AU 474592B2
Authority
AU
Australia
Prior art keywords
pipeline
techniques
signalling systems
signalling
systems
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
AU71088/74A
Other languages
English (en)
Other versions
AU7108874A (en
Inventor
W. Potter Frederick V. Topping David
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
Publication of AU7108874A publication Critical patent/AU7108874A/en
Application granted granted Critical
Publication of AU474592B2 publication Critical patent/AU474592B2/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)
AU71088/74A 1973-09-19 1974-07-10 Pipeline signalling systems and techniques Expired AU474592B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CACA181,449 1973-09-19
CA181,449A CA980422A (en) 1973-09-19 1973-09-19 Pipeline signalling system and techniques

Publications (2)

Publication Number Publication Date
AU7108874A AU7108874A (en) 1976-01-15
AU474592B2 true AU474592B2 (en) 1976-07-29

Family

ID=4097847

Family Applications (1)

Application Number Title Priority Date Filing Date
AU71088/74A Expired AU474592B2 (en) 1973-09-19 1974-07-10 Pipeline signalling systems and techniques

Country Status (5)

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

Also Published As

Publication number Publication date
FR2244125B1 (fr) 1977-11-04
CA980422A (en) 1975-12-23
FR2244125A1 (fr) 1975-04-11
GB1475538A (en) 1977-06-01
AU7108874A (en) 1976-01-15
NL7410156A (nl) 1975-03-21
NL158931B (nl) 1978-12-15

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