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WO2002018709A1 - Protection d'elements allonges immerges - Google Patents

Protection d'elements allonges immerges Download PDF

Info

Publication number
WO2002018709A1
WO2002018709A1 PCT/GB2001/003792 GB0103792W WO0218709A1 WO 2002018709 A1 WO2002018709 A1 WO 2002018709A1 GB 0103792 W GB0103792 W GB 0103792W WO 0218709 A1 WO0218709 A1 WO 0218709A1
Authority
WO
WIPO (PCT)
Prior art keywords
cladding
depressions
underwater
underwater cladding
length
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.)
Ceased
Application number
PCT/GB2001/003792
Other languages
English (en)
Inventor
Robert Gibson
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.)
CRP Subsea Ltd
Original Assignee
CRP Group 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
Priority claimed from GB0021142A external-priority patent/GB0021142D0/en
Application filed by CRP Group Ltd filed Critical CRP Group Ltd
Priority to AU2001282324A priority Critical patent/AU2001282324A1/en
Priority to US10/363,277 priority patent/US20040013473A1/en
Priority to GB0304462A priority patent/GB2385648B/en
Publication of WO2002018709A1 publication Critical patent/WO2002018709A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/123—Devices for the protection of pipes under water
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01—Risers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01—Risers
    • E21B17/012—Risers with buoyancy elements

Definitions

  • the present invention relates to the protection of underwater pipes, drill
  • risers, cables or other elongate members are examples of risers, cables or other elongate members.
  • vortices may be shed alternately from each side.
  • the member can be caused to vibrate with a large oscillation amplitude.
  • an elongate underwater cladding for
  • an elongate member comprises an outer surface having a plurality of depressions
  • outer surface of a cladding interrupts or reduces vortex induced vibrations and in
  • the depressions are arranged around the whole periphery or
  • the depressions have a generally circular periphery.
  • the depressions have an elliptical periphery.
  • the sides of the depressions are angular as this can help to "trip" the
  • the size of the depressions may vary widely. For example, for circular
  • the diameter may vary from 1cm to 30cm and is preferably between 10cm and 20cm in diameter.
  • the length of the major axis For elliptical depressions, the length of the major axis
  • the length of the major axis is from 10cm
  • the length of the minor axis is preferably from 5cm to 15cm.
  • depression e.g. the diameter of a circular depression or the length of the major axis
  • the depressions may be regularly spaced over the cylindrical surface of the
  • the depressions are substantially
  • the cladding may comprise positively buoyant material.
  • foam (either with or without the inclusion of macrospheres) would be particularly desirable
  • the cladding of the present invention can comprise
  • buoyancy module for a drill riser. Such a buoyancy module would offset much of
  • the cladding may comprise preformed sections which are subsequently
  • preformed sections may comprise semi-tubular sections.
  • the preformed sections may comprise semi-tubular sections.
  • preformed sections may comprise tubular sections. If tubular sections are used, the sections are preferably split along their length (e.g. a longitudinal or helical split) to
  • the depressions can be moulded into the outer surface of the
  • the preformed sections may be moulded with a
  • the cladding may be moulded directly onto the outer
  • the depressions or recesses may be
  • cladding may be moulded without the depressions, which may be cut, machined or
  • the outer surface of the cladding is substantially cylindrical.
  • Fig. 1 is a perspective view of a first embodiment of cladding in
  • Fig. 2 is a side view of a second embodiment of pipe cladding in
  • Fig. 3 is a cross section of the pipe cladding of Fig. 2, looking in the
  • Fig. 4 is a side view of a third embodiment of cladding in accordance
  • Figs 5a to 5d show examples of four possible orientations of the
  • Fig 6 illustrates diagrammatically a typical cross-section of a cladding
  • moulding show the shapes and relative dispositions of depressions.
  • a protective ducting 10 for a pipe (not illustrated)
  • tubular flexible, impervious, polyurethane casing comprising a plurality
  • protective ducting or cladding varies with the diameter of the pipe to be clad.
  • the internal diameter is approximately 0.75
  • the required length of cladding is assembled by arranging the appropriate
  • diametrically opposed sections of the cladding may be "staggered" by approximately half the length of the section to ensure
  • each cladding section may be provided with a reduced-diameter spigot
  • the outer surface of the assembled cladding comprises a smooth, generally
  • the diameter of the depressions is approximately 15cm and the maximum
  • depth of the depressions is approximately 3 cm. However, the diameter and depth of
  • the depressions may vary widely.
  • the diameter of the circular depressions may vary widely.
  • the cladding 10 is assembled on a pipe, drill riser, cable or other
  • the depressions or recesses 18 may be moulded into the outer surface of the
  • preformed semi-tubular sections 12 may be preformed semi-tubular sections 12.
  • the preformed sections may be
  • depressions or recesses may be cut or machined into the outer surface
  • the cladding 10' comprises a plurality of preformed, flexible, impervious, polyurethane tubular cladding sections
  • the cladding section onto a pipe, cable or other elongate member
  • cladding section is opened at the slit 22 and manipulated onto the elongate member
  • the cladding member may then be held in the shut position by the
  • opposite ends of the cladding section may be provided with a spigot portion and a
  • the outer surface 24 of the cladding section is generally smooth and cylindrical but is provided with a plurality of identical, evenly-
  • each elliptical depression is aligned parallel with the longitudinal axis of the
  • the dimensions of the depressions or recesses may vary widely. However,
  • the length of the major axis is approximately 15cm and
  • the length of the minor axis is approximately 7.5cm.
  • the length of the major axis is from 1cm to 30cm, and more preferably
  • the length of the minor axis is from 0.5cm to
  • the embodiment illustrated in Fig. 4 comprises a cladding section 28 which
  • the depressions or recesses 32 correspond to those for the first embodiment.
  • the depressions or recesses 32 may be any shape.
  • the cladding may be moulded with a smooth cylindrical exterior surface (i.e. without
  • the depressions or recesses 32) and the depressions or recesses may be cut or machined into the outer surface subsequently.
  • Fig 5a - 5d shows examples of possible orientations of the depressions along
  • Fig 5a shows the depressions in regular lines and columns
  • Fig 5b shows lines and columns which are offset
  • Fig 5 c shows the depressions
  • Fig 6 is a partial section of a typical moulding showing depressions which
  • the cladding interrupts or reduces vortex induced vibration. Moreover, in each case,
  • the outer surface of the cladding is devoid of projections, the clad pipe, or
  • the material from which the cladding is made need not be polyurethane but could, in fact, be any material which is sufficiently flexible
  • cladding from a syntactic foam, e.g. a mixture of glass
  • thermoset resin matrix with or without the inclusion of larger
  • a cladding in accordance with the present invention which is made
  • buoyancy module for a drill riser.
  • the sections are arranged with respect to one another, form an aperture for receipt of
  • buoyancy modules is assembled by arranging the preformed sections 12' along the
  • buoyancy module halves may be bolted together.
  • the outer surface of the assembled buoyancy module is cylindrical, but as for
  • the depressions or recesses 18' can be
  • depression e.g. the diameter of a circular depression or the length of the major axis of an elliptical depression
  • 5% to 50% and more preferably between 10%
  • the periphery of the depressions or recesses could be polygonal or could be
  • the depressions or recesses need not be smooth or dished and, for example, may
  • the material from which the cladding is made may incorporate
  • TBT tributyl tin

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

L'invention concerne un revêtement immergé (10) pour un élément allongé tel qu'un tuyau. Ce revêtement allongé comporte une surface extérieure sensiblement cylindrique pourvue d'une pluralité de creux (18). La présence de ces creux sur la surface extérieure par ailleurs cylindrique d'un revêtement interrompt ou réduit les vibrations dues à des tourbillons tandis que l'absence de saillies facilite l'utilisation de ce revêtement conjointement avec un matériel classique de pose du tuyaux.
PCT/GB2001/003792 2000-08-30 2001-08-23 Protection d'elements allonges immerges Ceased WO2002018709A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2001282324A AU2001282324A1 (en) 2000-08-30 2001-08-23 Protection of underwater elongate members
US10/363,277 US20040013473A1 (en) 2000-08-30 2001-08-23 Protection of underwater elongate members
GB0304462A GB2385648B (en) 2000-08-30 2001-08-23 Protection of underwater elongate members

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0021142A GB0021142D0 (en) 2000-08-30 2000-08-30 Protection of underwater elongate members
GB0021142.5 2000-08-30
GB0104464A GB0104464D0 (en) 2000-08-30 2001-02-23 Protection of underwater elongate members
GB0104464.3 2001-02-23

Publications (1)

Publication Number Publication Date
WO2002018709A1 true WO2002018709A1 (fr) 2002-03-07

Family

ID=26244921

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/003792 Ceased WO2002018709A1 (fr) 2000-08-30 2001-08-23 Protection d'elements allonges immerges

Country Status (4)

Country Link
US (1) US20040013473A1 (fr)
AU (1) AU2001282324A1 (fr)
GB (1) GB2385648B (fr)
WO (1) WO2002018709A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2441534A (en) * 2007-01-17 2008-03-12 Trelleborg Crp Ltd De-correlation rings for vortex induced vibration suppression
DE10215607B4 (de) * 2002-03-22 2011-06-30 Smc K.K. Rohrverbinder
EP2514878A1 (fr) * 2011-04-18 2012-10-24 GeoSea NV Plate-forme en mer auto-élévatrice et procédé permettant de réduire les mouvements d'oscillation latérale

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7104219B2 (en) * 2002-06-04 2006-09-12 Frantz Anthony F Piling decontamination and marine life enhancement system
NO320257B1 (no) * 2004-02-18 2005-11-14 Sverre Meisingset Anordning for beskyttelse av et langstrakt element pa havbunnen og fremgangsmate for installasjon av samme.
US7628569B2 (en) * 2005-07-12 2009-12-08 Bonilla Gris Robie Covering element for protecting structures against scouring and drag force
WO2007008054A1 (fr) * 2005-07-12 2007-01-18 Instituto Politécnico Nacional Moule permettant de creer une rugosite artificielle contre l'excavation
US20080302537A1 (en) * 2007-06-07 2008-12-11 Mcmiles Barry James Dimpled riser floatation module
US7766580B2 (en) * 2008-02-14 2010-08-03 National Oilwell Varco, L.P. Energy managing keel joint
US8770894B1 (en) * 2011-12-27 2014-07-08 VIV Solutions LLC Helical strakes with molded in stand-offs
US9869128B1 (en) 2012-11-24 2018-01-16 VIV Solutions LLC Installation systems and methodology for helical strake fins
US20160097175A1 (en) * 2013-03-26 2016-04-07 Alton F. Parker Aggregate replacement
KR101382127B1 (ko) * 2013-06-19 2014-04-07 한국지질자원연구원 와류 유동 진동 저감 구조를 가진 해양플랜트용 라이저 및 그 제조방법
CN104453730A (zh) * 2014-11-10 2015-03-25 西南石油大学 一种减小隔水管柱所受洋流阻力的浮力块表面结构
NL2013819B1 (nl) * 2014-11-17 2016-10-10 Lankhorst Eng Products B V Bekledingskoker voor het omhullen van een onderwater-leiding.
US10865910B1 (en) 2015-04-17 2020-12-15 VIV Solutions LLC Coupled fairing systems
US10337649B1 (en) 2016-03-02 2019-07-02 VIV Solutions LLC Strake system
US10473131B1 (en) 2016-07-10 2019-11-12 VIV Solutions LLC Helical strakes and collar
CN111433429B (zh) * 2017-10-20 2022-06-14 巴尔莫勒尔卡姆丹克有限公司 用以减少涡激振动(viv)及/或阻力而成型的圆柱形元件
US11261675B2 (en) 2018-01-16 2022-03-01 VIV Solutions LLC Methods for constructing a helical strake segment using one or more shell sections and fins
CN108194035B (zh) * 2018-02-01 2024-01-30 江苏科技大学 一种海洋立管涡激振动抑制装置及抑制方法
GB2592072B (en) 2020-02-17 2024-07-17 Trelleborg Offshore Uk Ltd Cladding

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5279368A (en) * 1989-09-29 1994-01-18 British Pipe Coaters Limited Anti-fouling covering for use in sub-sea structures
WO1999005389A1 (fr) * 1997-07-23 1999-02-04 Cuming Corporation Systeme flottant pour un tube goulotte
US5939643A (en) * 1996-08-21 1999-08-17 Endress + Hauser Flowtec Ag Vortex flow sensor with a cylindrical bluff body having roughned surface
GB2335248A (en) 1998-03-07 1999-09-15 Crp Group Ltd Vortex shedding claddings for submerged tubulars
DE19840303A1 (de) * 1998-09-04 2000-03-09 Brandhorst Ingo Gezielte Erzeugung von Mikroturbolenzen zum Zwecke der Verminderung von Strömungsverlusten

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US4610034A (en) * 1982-09-07 1986-09-09 Johnson Sam E Shoulder protection device
GB2153962A (en) * 1984-02-04 1985-08-29 British Petroleum Co Plc Riser shroud
US4632600A (en) * 1985-09-25 1986-12-30 Nippon Kokan Kabushiki Kaisha Movable fixed-type semi-submerged construction
IT231394Y1 (it) * 1993-05-21 1999-08-03 Italiana Serrature Torino Tubo flessibile con caratteristiche di tenuta alla temperatura e/o alla pressione
US5862772A (en) * 1996-12-26 1999-01-26 Emerson & Cumingcomposite Materials, Inc. Damage control materials for warship construction
US6102611A (en) * 1997-08-13 2000-08-15 Hero Products, Inc. Apparatus for protecting structural supports

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5279368A (en) * 1989-09-29 1994-01-18 British Pipe Coaters Limited Anti-fouling covering for use in sub-sea structures
US5939643A (en) * 1996-08-21 1999-08-17 Endress + Hauser Flowtec Ag Vortex flow sensor with a cylindrical bluff body having roughned surface
WO1999005389A1 (fr) * 1997-07-23 1999-02-04 Cuming Corporation Systeme flottant pour un tube goulotte
GB2335248A (en) 1998-03-07 1999-09-15 Crp Group Ltd Vortex shedding claddings for submerged tubulars
DE19840303A1 (de) * 1998-09-04 2000-03-09 Brandhorst Ingo Gezielte Erzeugung von Mikroturbolenzen zum Zwecke der Verminderung von Strömungsverlusten

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10215607B4 (de) * 2002-03-22 2011-06-30 Smc K.K. Rohrverbinder
GB2441534A (en) * 2007-01-17 2008-03-12 Trelleborg Crp Ltd De-correlation rings for vortex induced vibration suppression
GB2441534B (en) * 2007-01-17 2009-01-28 Trelleborg Crp Ltd Supression of vortex induced vibration
US8500367B2 (en) 2007-01-17 2013-08-06 Trelleborg Crp Limited Suppression of vortex induced vibration
EP2514878A1 (fr) * 2011-04-18 2012-10-24 GeoSea NV Plate-forme en mer auto-élévatrice et procédé permettant de réduire les mouvements d'oscillation latérale
BE1019908A4 (nl) * 2011-04-18 2013-02-05 Geosea N V Opvijzelbaar offshore platform en werkwijze voor het onderdrukken van laterale oscillerende bewegingen ervan.

Also Published As

Publication number Publication date
US20040013473A1 (en) 2004-01-22
GB2385648B (en) 2003-12-03
GB2385648A (en) 2003-08-27
GB0304462D0 (en) 2003-04-02
AU2001282324A1 (en) 2002-03-13

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