WO2011121330A1 - Perfectionnements apportés à la réparation des canalisations et relatifs à cette réparation - Google Patents

Perfectionnements apportés à la réparation des canalisations et relatifs à cette réparation Download PDF

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Publication number
WO2011121330A1
WO2011121330A1 PCT/GB2011/050544 GB2011050544W WO2011121330A1 WO 2011121330 A1 WO2011121330 A1 WO 2011121330A1 GB 2011050544 W GB2011050544 W GB 2011050544W WO 2011121330 A1 WO2011121330 A1 WO 2011121330A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipeline
seal
section
body section
distensible
Prior art date
Application number
PCT/GB2011/050544
Other languages
English (en)
Inventor
Paul Davidson
Original Assignee
Coupling Technology 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 Coupling Technology Limited filed Critical Coupling Technology Limited
Publication of WO2011121330A1 publication Critical patent/WO2011121330A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/163—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
    • F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
    • F16L55/132—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
    • F16L55/134—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing by means of an inflatable packing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe

Definitions

  • the present invention relates to a device and method for repairing leaks in pipelines. It finds particular but not exclusive use in oil pipelines, since the economics involved in maintaining and repairing such pipelines renders leaks and their necessary repair of great importance. However, embodiments of the invention can be used in pipelines carrying any of a range of liquids and gasses.
  • oil pipelines can stretch for thousands of kilometres across otherwise unspoilt landscapes.
  • Oil companies are always concerned about economic problems associated with leaks in their pipelines, as repairs can involve taking a particular pipeline out of service for a period, which can bring large possible financial losses.
  • the oil companies are concerned with environmental issues and the pollution caused by an oil leak, if left untreated for a prolonged period, can cause serious damage to the local environment.
  • Whatever the motivation to repair there is an increasing need to locate and repair leaks in pipelines in a timely, cost-effective and reliable manner.
  • Figure 1 shows a cross-sectional view of a pipeline in which is situated a first embodiment of the present invention before the distensible seal is deployed;
  • Figure 2 shows a cross-sectional view of a pipeline in which is situated a first embodiment of the present invention after the distensible seal is deployed
  • Figure 3 shows a cross-sectional view of a pipeline in which a second embodiment of the present invention is located, after the distensible seal is deployed
  • Figure 4 shows a cross-sectional view of a curved pipeline in which a second embodiment of the present invention is located, before the distensible seal is deployed;
  • Figure 5 shows a cross-sectional view of a curved pipeline in which a third embodiment of the present invention is located, after the distensible seal is deployed;
  • Figure 6 shows a cross-sectional view of a pipeline in which is situated a third embodiment of the present invention, before the distensible seal is deployed.
  • Figure 1 shows a cross-sectional view through a pipeline 1 in which is located an apparatus 10 according to an embodiment of the present invention.
  • the pipeline 1 is live and is conveying a fluid 2 from a first to a second location.
  • the fluid will be one of an oil, water, a solvent or a gas. It is anticipated that embodiments of the invention will be used mostly in conjunction with oil pipelines, but this is not a limiting feature of the present invention.
  • the apparatus 10 comprises a body section 20 formed from a corrugated section of pipe having a diameter slightly less that the internal diameter of the pipeline 1 , so that it fits in it easily and can be transported or moved to the desired location.
  • the corrugated section of pipe is formed from a relatively thin walled steel pipe.
  • the corrugations provide strength whilst also providing flexibility, which is necessary so that the apparatus 10 can negotiate bends and junctions in the pipeline 1.
  • annular collar section 30 At each end of the apparatus, is an annular collar section 30, having a diameter slightly larger than the diameter of the corrugated section.
  • the collar section can be integrally formed with the corrugated section 20 or may be welded or otherwise attached to the corrugated section 20.
  • the collar section 30 is provided with a circumferential recess 31 , which runs around the entire circumference of the collar 30. Disposed within the recess 30 is a distensible seal 40.
  • the seal 40 is formed from nitrile rubber material and resembles a bicycle inner tube. It is a continuous loop but is arranged to have a substantially square or rectangular cross-section to match the recess 31 , unlike the circular cross-section of a typical bicycle inner tube. It is also provided with, at a point on its circumference, a valve 41 . Connected to the valve is a canister 50 of pressurised expandable foam.
  • the expandable foam is of the sort used in widely available tyre-repair kits used to repair a puncture in a vehicle tyre by filling the interior of the tyre cavity with the foam, which acts to seal the puncture and to inflate or otherwise distend the tyre.
  • the canister 50 may contain a pressurised gas alone, which can be used to inflate the seal 40, but more long-lasting results are likely to be achieved if a foam is used also.
  • the foam canister 50 is located adjacent and external to the corrugated section 20 and between the two collar sections 30. Two foam connections are provided such that, once released, foam from the canister 50 can flow into each of the seals 40. Alternatively, two separate canisters 50 can be provided, each associated with only the seal at one particular end of the apparatus 10.
  • the apparatus 1 is introduced into the pipeline 1 along with a PIG (Pipeline Inspection Gauge) by use of a hydrant system, in a known way.
  • the PIG may be arranged to tow the apparatus 1 behind it until the location of the leak is reached.
  • the location may be determined by telemetry from the PIG, measuring off the distance by means of a tether attached to the PIG, by an optical system provided by the PIG or by any other suitable means.
  • the foam canister 50 can be activated.
  • the leak is located at the position of the weld 3 between two sections of pipeline. In practice, this is the most common location for leaks to occur.
  • the canister To activate the canister, it is provided with a release cord which, when operated, detaches and opens the valve so that the foam may be conveyed at pressure into one or both seals 40 which then inflate or distend such that their outer surface extends beyond the recess 31 and contacts the interior surface of the pipeline 1.
  • the release cord is operated via suitable functional means on the PIG and, once activated, may be retained by the PIG or released into the pipeline 1.
  • Figure 2 also shows that the exposed outer surface of the seal 40 is provided with a plurality of ribs 42 for improving the seal with the interior of the pipeline.
  • Figure 3 shows an alternative embodiment of the present invention.
  • the apparatus 10' is identical with the first embodiment 10, described previously, except a pair of foam canisters 50' are provided, each one of which is connected to a seal 40 at each end of the apparatus.
  • the individual canisters are located within one of the 'valleys' of the corrugated section 20 of the apparatus 10.
  • This arrangement has an advantage over the previous embodiment in that by locating the canisters in this way, rather than longitudinally with respect to the corrugated section, the flexible corrugated section 20 can go around bends in the pipe, so that leaks in elbow sections can be repaired, or bends can be negotiated to reach leaks further down the pipeline.
  • the fix which is provided in this way can be semi-permanent and can be left in-situ for whatever period is required until a more permanent fix can be arranged. This can be up to several weeks later. Once the leak is repaired permanently, then a further PIG can be dispatched into the pipeline 1 to recover the apparatus 1 and remove it from the pipe.
  • the apparatus can be configured to whatever size is needed for a particular task.
  • the main variations are in diameter to fit a particular pipeline and in length.
  • the length can be adjusted according to the extent of damage to the pipe, perhaps being used to repair more than one leak.
  • Figure 4 shows a scenario where an apparatus 10' is located in an elbow section of pipeline 1 .
  • the corrugations operate to allow the apparatus to follow the bend in the pipe.
  • the "ridges" of the corrugated section compress and, on the longer section (“the outside”) , the "ridges” are spread out. This allows the apparatus 10' to follow the pipeline, which maintaining its structural integrity.
  • the foam canisters 50' are activated as described previously to isolate the section of pipeline positioned between the pair of seals 40.
  • Figure 5 shows the situation when the foam canister 50' have been activated and the seals 40 are fully distended and contacting the internal surface of the pipeline.
  • Figure 5 also shows an alternative configuration of the collar 30, where it has been provided, at each end, with a funnel section 32, which provides a smooth transition between the internal diameter of the pipeline 1 and the internal diameter of the apparatus 10', resulting in less turbulence and no sudden discontinuities which could act to dislodge the apparatus in extreme cases.
  • Figure 6 shows a third embodiment 100 of the present invention.
  • the apparatus 100 comprises a rigid elongate body, and is suitable for use in a pipeline situation where no bends in the pipe are encountered. The entire body, including collar sections can then be easily formed as a single part if required.
  • the foam canister 50 is located longitudinally between the two collar sections 30 and is coupled to each seal 40, located respectively in each collar section 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)

Abstract

L'invention porte sur un dispositif (10) agencé pour isoler une section de canalisation (1) d'un fluide qui est transporté par la canalisation, le dispositif comprenant : une section corps allongé (20) ; deux sections colliers (30) disposées aux extrémités opposées de la section corps ; un évidement circonférentiel ménagé dans chaque section collier ; un joint extensible placé dans chaque évidement circonférentiel (31) ; et des moyens (50), accouplés fonctionnellement à chaque joint extensible (40), pour mettre le joint (40) en extension de manière à le faire entrer en contact avec une surface intérieure de la canalisation. L'invention porte aussi sur un procédé correspondant.
PCT/GB2011/050544 2010-03-29 2011-03-18 Perfectionnements apportés à la réparation des canalisations et relatifs à cette réparation WO2011121330A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1005224A GB2479129A (en) 2010-03-29 2010-03-29 Apparatus for isolating a section of pipeline during repair of leak or rupture
GB1005224.9 2010-03-29

Publications (1)

Publication Number Publication Date
WO2011121330A1 true WO2011121330A1 (fr) 2011-10-06

Family

ID=42228499

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2011/050544 WO2011121330A1 (fr) 2010-03-29 2011-03-18 Perfectionnements apportés à la réparation des canalisations et relatifs à cette réparation

Country Status (2)

Country Link
GB (1) GB2479129A (fr)
WO (1) WO2011121330A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107435778A (zh) * 2016-05-27 2017-12-05 中国石油天然气股份有限公司 一种直立油气管线隔爆方法
CN109595426A (zh) * 2018-12-29 2019-04-09 重庆赛格尔汽车配件有限公司 波纹管补漏点装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3016952B1 (fr) 2014-01-28 2016-09-09 Gdf Suez Outil pour intervention sur la paroi d'une canalisation - methode associee.
FR3088102B1 (fr) * 2018-11-06 2021-12-10 Grtgaz Outil pour intervention sur la paroi d'une canalisation de fluide avec module de diminution de la pression

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1221733A (en) * 1916-08-28 1917-04-03 Watt A Henderson Test-plug.
GB212715A (en) * 1923-02-10 1924-03-20 Frederick Leonard Ball Improvements in or relating to apparatus for testing pipe-joints for leakage
FR2178512A5 (fr) * 1972-09-21 1973-11-09 Terastic Fse Impermeabil
US4413655A (en) * 1981-04-14 1983-11-08 Brown George T Pipe repair bypass system
US4763511A (en) * 1985-10-07 1988-08-16 Cherne Industries, Inc. Pipe joint sealing and testing apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6899138B2 (en) * 2002-12-09 2005-05-31 Philip L. Lundman Flexible emergency gas pipeline plug
US7452161B2 (en) * 2006-06-08 2008-11-18 Halliburton Energy Services, Inc. Apparatus for sealing and isolating pipelines
GB0802235D0 (en) * 2008-02-07 2008-03-12 Swellfix Bv Downhole seal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1221733A (en) * 1916-08-28 1917-04-03 Watt A Henderson Test-plug.
GB212715A (en) * 1923-02-10 1924-03-20 Frederick Leonard Ball Improvements in or relating to apparatus for testing pipe-joints for leakage
FR2178512A5 (fr) * 1972-09-21 1973-11-09 Terastic Fse Impermeabil
US4413655A (en) * 1981-04-14 1983-11-08 Brown George T Pipe repair bypass system
US4763511A (en) * 1985-10-07 1988-08-16 Cherne Industries, Inc. Pipe joint sealing and testing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107435778A (zh) * 2016-05-27 2017-12-05 中国石油天然气股份有限公司 一种直立油气管线隔爆方法
CN109595426A (zh) * 2018-12-29 2019-04-09 重庆赛格尔汽车配件有限公司 波纹管补漏点装置

Also Published As

Publication number Publication date
GB2479129A (en) 2011-10-05
GB201005224D0 (en) 2010-05-12

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