WO1999000679A1 - Detection de tuyaux souterrains - Google Patents

Detection de tuyaux souterrains Download PDF

Info

Publication number
WO1999000679A1
WO1999000679A1 PCT/GB1998/001881 GB9801881W WO9900679A1 WO 1999000679 A1 WO1999000679 A1 WO 1999000679A1 GB 9801881 W GB9801881 W GB 9801881W WO 9900679 A1 WO9900679 A1 WO 9900679A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
pressure waves
electrode
electric field
signal
Prior art date
Application number
PCT/GB1998/001881
Other languages
English (en)
Inventor
Andrew Biggerstaff Lewis
Original Assignee
Radiodetection Limited
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 Radiodetection Limited filed Critical Radiodetection Limited
Publication of WO1999000679A1 publication Critical patent/WO1999000679A1/fr

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
    • G01V3/088—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 operating with electric fields

Definitions

  • the present invention relates to the detection of a
  • US-A-5269335 discloses a method of detecting a
  • the present invention proposes that a dielectric
  • the field is generated by at least one
  • dielectric fluid is fuel gas, although any other fluid
  • the detection arrangement in the pipe which can be detected at a point removed from the location of the electrode.
  • the at least one electrodes are conveniently configured
  • the signal is generated relative to ground, using the
  • a signal return path may be defined
  • the electrodes may be arranged
  • the electrode assembly may be of an suitable shape
  • the signal applied may take another form and/or
  • Fig. 1 shows a schematic view of the operation of a
  • Fig. 2 shows in more detail the electrode assembly
  • Fig. 3 shows an alternative construction of the
  • Fig. 4 shows in more detail the detector of the
  • a pipe 10 which is to be
  • This hole 16 may either be a standard access
  • An electrode assembly 11 is sited around
  • the electrode assembly 11 may also be placed on a
  • connection point for the electrode assembly 11 to be
  • the electrode assembly 11 as illustrated is
  • A will be able to sense vibrational energy transmitted
  • the sensors 20, 21 pass signals to a detector
  • a further sensor (not shown) may be provided connected at
  • the signal from the signal generator 14 may generate a simple pulsed electric signal, i.e. a square wave.
  • a modulation may be applied to
  • Fig. 2 illustrates a construction of the electrode
  • the assembly 11 contains three electrodes
  • the central electrode 13B receives the generated
  • the insulating material 12 is thick enough
  • the assembly 11 is provided in a two part annular
  • each of the electrodes 13A, 13B, 13C forms a
  • the electrode assembly envisaged is a flexible sleeve of
  • Fig. 3 illustrates an alternative construction for
  • the electrode assembly 51 the electrode assembly 51.
  • the electrode assembly 51 the electrode assembly 51.
  • assembly 51 has two parts 51A, 51B disposed diametrically
  • parts 51A, 51B has one electrode 53A, 53B, encased in an
  • insulation layer 52A, 52B The two parts 51A, 51B of the
  • electrode assembly 51 are of a suitable axial length to
  • the signal applied by the signal generator should be any signal applied by the signal generator.
  • the signal may be take another
  • the detector 22 has an analog input 41 connected to each of the sensors 20 , ⁇ 21.
  • Each sensor 20, 21 includes a geophone 43. Only one
  • geophone 43 is shown in Fig. 3, but there will be one for
  • the geophone 43 passes signals to
  • Power for the detector 22 is obtained from a battery pack
  • processing unit 46 also controls the power control unit
  • the processing unit 46 uses a program stored in a
  • the processing unit 46 may also have as an input
  • a key pad 51 permits the user to input commands to

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)
  • Geophysics And Detection Of Objects (AREA)

Abstract

L'invention concerne la génération d'ondes de pression dans un tuyau (10) contenant un fluide diélectrique, au moyen d'au moins une électrode (11) contiguë au tuyau (10) et d'un dispositif (14) d'application d'un signal électrique varié à l'électrode (11) pour générer un champ électrique varié dans le tuyau (10). Le champ électrique possède une intensité suffisante pour créer des dipôles dans les molécules du fluide diélectrique, et les ondes de pression sont générées par création et relâchement de ces dipôles. Un détecteur (20, 21, 22) détecte les ondes de pression dans le tuyau (10) à un point situé à distance de l'électrode (11), ce qui permet de détecter le tuyau (10) souterrain.
PCT/GB1998/001881 1997-06-26 1998-06-26 Detection de tuyaux souterrains WO1999000679A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9713573.5 1997-06-26
GBGB9713573.5A GB9713573D0 (en) 1997-06-26 1997-06-26 Detecting underground pipes

Publications (1)

Publication Number Publication Date
WO1999000679A1 true WO1999000679A1 (fr) 1999-01-07

Family

ID=10814991

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/001881 WO1999000679A1 (fr) 1997-06-26 1998-06-26 Detection de tuyaux souterrains

Country Status (2)

Country Link
GB (1) GB9713573D0 (fr)
WO (1) WO1999000679A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1274187A1 (fr) * 2001-02-28 2003-01-08 Sony Corporation Dispositif et procede de transmission de signal
WO2007086062A2 (fr) * 2006-01-29 2007-08-02 Eli Mano Systeme pour tester des conduites cachees
US8903643B2 (en) 2007-03-13 2014-12-02 Certusview Technologies, Llc Hand-held marking apparatus with location tracking system and methods for logging geographic location of same
US8965700B2 (en) 2008-10-02 2015-02-24 Certusview Technologies, Llc Methods and apparatus for generating an electronic record of environmental landmarks based on marking device actuations
US9086277B2 (en) 2007-03-13 2015-07-21 Certusview Technologies, Llc Electronically controlled marking apparatus and methods
US9097522B2 (en) 2009-08-20 2015-08-04 Certusview Technologies, Llc Methods and marking devices with mechanisms for indicating and/or detecting marking material color
US9185176B2 (en) 2009-02-11 2015-11-10 Certusview Technologies, Llc Methods and apparatus for managing locate and/or marking operations
US9542863B2 (en) 2008-10-02 2017-01-10 Certusview Technologies, Llc Methods and apparatus for generating output data streams relating to underground utility marking operations
CN106353825A (zh) * 2016-10-28 2017-01-25 南京信息工程大学 一种地下金属管道探测系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0512756A1 (fr) * 1991-05-06 1992-11-11 Exxon Production Research Company Prospection géophysique
US5269335A (en) * 1990-07-27 1993-12-14 Heitman Lynn B Automatic pulsing valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269335A (en) * 1990-07-27 1993-12-14 Heitman Lynn B Automatic pulsing valve
EP0512756A1 (fr) * 1991-05-06 1992-11-11 Exxon Production Research Company Prospection géophysique

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1274187A4 (fr) * 2001-02-28 2005-01-26 Sony Corp Dispositif et procede de transmission de signal
US6989755B2 (en) 2001-02-28 2006-01-24 Sony Corporation Signal transmission device and method
EP1274187A1 (fr) * 2001-02-28 2003-01-08 Sony Corporation Dispositif et procede de transmission de signal
WO2007086062A2 (fr) * 2006-01-29 2007-08-02 Eli Mano Systeme pour tester des conduites cachees
WO2007086062A3 (fr) * 2006-01-29 2009-04-16 Eli Mano Systeme pour tester des conduites cachees
US9086277B2 (en) 2007-03-13 2015-07-21 Certusview Technologies, Llc Electronically controlled marking apparatus and methods
US8903643B2 (en) 2007-03-13 2014-12-02 Certusview Technologies, Llc Hand-held marking apparatus with location tracking system and methods for logging geographic location of same
US8965700B2 (en) 2008-10-02 2015-02-24 Certusview Technologies, Llc Methods and apparatus for generating an electronic record of environmental landmarks based on marking device actuations
US9542863B2 (en) 2008-10-02 2017-01-10 Certusview Technologies, Llc Methods and apparatus for generating output data streams relating to underground utility marking operations
US9185176B2 (en) 2009-02-11 2015-11-10 Certusview Technologies, Llc Methods and apparatus for managing locate and/or marking operations
US9097522B2 (en) 2009-08-20 2015-08-04 Certusview Technologies, Llc Methods and marking devices with mechanisms for indicating and/or detecting marking material color
CN106353825A (zh) * 2016-10-28 2017-01-25 南京信息工程大学 一种地下金属管道探测系统
CN106353825B (zh) * 2016-10-28 2018-04-03 南京信息工程大学 一种地下金属管道探测系统

Also Published As

Publication number Publication date
GB9713573D0 (en) 1997-09-03

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