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1. WO2011027154 - METHOD OF TESTING AN UNBONDED FLEXIBLE PIPELINE

Publication Number WO/2011/027154
Publication Date 10.03.2011
International Application No. PCT/GB2010/051443
International Filing Date 02.09.2010
IPC
G01M 3/14 2006.01
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
3Investigating fluid tightness of structures
02by using fluid or vacuum
04by detecting the presence of fluid at the leakage point
12by observing elastic covers or coatings, e.g. soapy water
14for pipes, cables, or tubes; for pipe joints or seals; for valves
G01M 3/18 2006.01
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
3Investigating fluid tightness of structures
02by using fluid or vacuum
04by detecting the presence of fluid at the leakage point
16using electric detection means
18for pipes, cables, or tubes; for pipe joints or seals; for valves
G01M 11/00 2006.01
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
11Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
G01M 5/00 2006.01
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
5Investigating the elasticity of structures, e.g. deflection of bridges or aircraft wings
CPC
G01M 3/18
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
3Investigating fluid-tightness of structures
02by using fluid or vacuum
04by detecting the presence of fluid at the leakage point
16using electric detection means
18for pipes, cables or tubes; for pipe joints or seals; for valves; ; for welds; for containers, e.g. radiators
G01M 5/0025
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
5Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
0025of elongated objects, e.g. pipes, masts, towers or railways
G01M 5/0091
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
5Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
0091by using electromagnetic excitation or detection
Applicants
  • GENESIS OIL & GAS CONSULTANTS LIMITED [GB]/[GB] (AllExceptUS)
  • BANKS, Steve [GB]/[GB] (UsOnly)
  • ARMITAGE, David [GB]/[GB] (UsOnly)
  • ROBINSON, Peter [GB]/[GB] (UsOnly)
  • PEYTON, Anthony [GB]/[GB] (UsOnly)
Inventors
  • BANKS, Steve
  • ARMITAGE, David
  • ROBINSON, Peter
  • PEYTON, Anthony
Agents
  • MURGITROYD & COMPANY
Priority Data
0915252.102.09.2009GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF TESTING AN UNBONDED FLEXIBLE PIPELINE
(FR) PROCÉDÉ DE TEST D'UN PIPELINE FLEXIBLE NON RACCORDÉ
Abstract
(EN)
A method of testing an unbonded flexible pipeline comprising a polymer pressure sheath, the method comprising at least the steps of: (a) transmitting an electromagnetic signal along the polymer pressure sheath; (b) seeking one or more reflected signals; and (c) analysing the or each reflected signal to determine one or more characteristics of the electrical permittivity of the polymer pressure sheath. In this way, a non-invasive electromagnetic signal can be generated to be passed along the polymer pressure sheath of the pipeline, and any reflected signals can be interpreted and analysed to ascertain any change in the dielectric properties of the polymer pressure sheath, in particular the presence or existence of one or more discontinuities such as cracks or holes, in advance of possible failure, in particular catastrophic failure, of the polymer pressure sheath. Characteristics of the reflected signal(s) can include distance, extent, etc. of discontinuities along the pipeline. This invention can be applied both to new pipelines during their manufacture and/or instalment, as well as existing pipelines being in situ or in service, thereby providing a single method for analysing all forms of pipelines.
(FR)
L'invention concerne un procédé de test d'un pipeline flexible non raccordé comprenant une gaine de pression polymère, ce procédé comprenant au moins les étapes consistant à : (a) envoyer un signal électromagnétique le long de la gaine de pression polymère; (b) rechercher un ou plusieurs signaux réfléchis, et (c) analyser le signal ou chaque signal réfléchi afin de déterminer au moins une caractéristique de la permittivité électrique de la gaine de pression polymère. De cette façon, un signal électromagnétique non invasif peut être généré pour le faire passer le long de la gaine de pression polymère du pipeline, et tout signal réfléchi peut être interprété et analysé de façon à s'assurer de tout changement dans les propriétés diélectriques de la gaine de pression polymère, notamment la présence ou l'existence d'au moins une discontinuité, telle que des fissures ou des trous, avant une éventuelle avarie, notamment une rupture catastrophique, de la gaine de pression polymère. Les caractéristiques du signal réfléchi ou des signaux réfléchis peuvent être la distance, l'extension, etc., des discontinuités le long du pipeline. Cette invention peut s'appliquer à la fois à de nouveaux pipelines en cours de fabrication et/ou d'installation, ainsi qu'à des pipelines existants in situ ou en service, ce qui permet de proposer un procédé unique d'analyse de toutes les formes de pipelines.
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