WO2005024247A1 - Cladding - Google Patents
Cladding Download PDFInfo
- Publication number
- WO2005024247A1 WO2005024247A1 PCT/GB2004/003846 GB2004003846W WO2005024247A1 WO 2005024247 A1 WO2005024247 A1 WO 2005024247A1 GB 2004003846 W GB2004003846 W GB 2004003846W WO 2005024247 A1 WO2005024247 A1 WO 2005024247A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cladding
- cladding section
- moulding
- section
- induced vibration
- Prior art date
Links
- 238000005253 cladding Methods 0.000 title claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000000465 moulding Methods 0.000 claims abstract description 18
- 230000003373 anti-fouling effect Effects 0.000 claims abstract description 16
- 238000001175 rotational moulding Methods 0.000 claims abstract description 13
- 229920003023 plastic Polymers 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 16
- 230000001629 suppression Effects 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- -1 polyethylene Polymers 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 3
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 description 6
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 5
- 229940112669 cuprous oxide Drugs 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000012620 biological material Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- PDZKZMQQDCHTNF-UHFFFAOYSA-M copper(1+);thiocyanate Chemical compound [Cu+].[S-]C#N PDZKZMQQDCHTNF-UHFFFAOYSA-M 0.000 description 1
- QHNCWVQDOPICKC-UHFFFAOYSA-N copper;1-hydroxypyridine-2-thione Chemical compound [Cu].ON1C=CC=CC1=S.ON1C=CC=CC1=S QHNCWVQDOPICKC-UHFFFAOYSA-N 0.000 description 1
- XDUPUJNNHFTMQS-UHFFFAOYSA-N copper;1-oxidopyridine-2-thione Chemical compound [Cu+2].[O-]N1C=CC=CC1=S.[O-]N1C=CC=CC1=S XDUPUJNNHFTMQS-UHFFFAOYSA-N 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/10—Influencing flow of fluids around bodies of solid material
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/502—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/10—Influencing flow of fluids around bodies of solid material
- F15D1/12—Influencing flow of fluids around bodies of solid material by influencing the boundary layer
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/502—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs
- B63B2021/504—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs comprising suppressors for vortex induced vibrations
Definitions
- the present invention relates to a cladding for suppressing vortex induced vibration of underwater pipes, cables or other elongate members.
- the sections are moulded from polyurethane and are semi-tubular,
- the cladding has proved itself in practice to be highly effective. However there are commercial pressures to produce a unit which is more economical in
- the existing polyurethane cladding has moderately thick walls which add to its mass and also to the area it presents to a flow, so that drag is increased. Reducing the mass and frontal area are desirable.
- the present inventors have recognized that the technique of rotational moulding can be advantageously applied to the manufacture of cladding for underwater members.
- Plastics materials used in rotational moulding such as polyethylene, tend to be
- cuprous oxide loading of 20-30% by mass in a polyethylene moulding ii. density is greatly increased by this level of loading.
- Medium density polyethylene has some inherent buoyancy, with typical specific gravity of 0.93.
- Cuprous oxide however has a specific gravity of 6-0.25% cuprous oxide loading thus results in a material with a specific gravity of 1.18.
- Sea water varies around 1.022.
- material properties are impaired by anti-fouling compounds.
- the toughness and durability of polymer materials would be significantly compromised by incorporation of a high loading of inorganic material; and iv. cost is significantly increased by use of expensive anti-fouling compounds.
- Patent Office searches to date have cited GB 2378969 (Balmoral Group Limited),
- a vortex induced vibration suppression cladding section for mounting upon an elongate underwater member, the section comprising a plastics moulding shaped to provide a tubular portion for receiving the member, the tubular portion being split along its length
- the cladding section comprising at its exterior at least one feature shaped to suppress vortex induced vibration, and the cladding comprising an outer layer incorporating anti-fouling material and an inner structural layer.
- a vortex induced vibration suppression cladding section for mounting upon an elongate underwater member, the method comprising rotationally moulding an outer layer comprising plastics material incorporating
- FIG. 1 is a perspective illustration of a section of VIV suppression cladding embodying the present invention
- Fig. 2 is a section in a radial plane through part of the section of cladding illustrated in Fig. 1;
- Fig. 3 is a perspective illustration of a pair of such sections assembled in a string.
- Fig. 4 is a section through a wall of a cladding embodying the present invention.
- Rotational moulding is distinguished from other moulding techniques in that during the moulding process the mould is rotated, so that the material in it forms a layer over the mould's inner surface. It is not intended to imply that the present invention is limited to any particular rotational moulding technique.
- rotational moulding typically involves introducing a measured quantity of thermoplastic powder to the mould and then
- Liquid resin may be used in place of powder, curing of the resin being promoted by the heated wall of the mould. Rotation may be about two axes.
- the mould is eccentrically mounted so that rotation about a generally horizontal axis causes the mould to rock and so serves to distribute material along the mould's length. The result is a hollow moulding with a controlled wall thickness which, after cooling (e.g. by air or water jets) can be removed from the mould.
- the illustrated cladding sections have been manufactured in one piece by rotational moulding in polyethylene, an economical material which is tough and of moderate density similar to that of water, so that the sections are approximately neutrally buoyant.
- Each cladding section 8 comprises a tubular part 10, which in the present embodiment is of circular cross section, and integrally formed VIV suppression features which in the present embodiment are formed as stakes 12.
- the wall of the tubular part 10 is longitudinally split at 14 and by virtue of the resilience of the material from which it is made, the section can be opened out - that is, the two
- sides of the split can be drawn apart - to allow the cladding section to be placed around an elongate member such as a marine riser.
- the strakes 12 are best seen in Fig. 2 and have an exposed vertex 16 which tends to "trip" flow over the cladding - ie. to promote the transition from laminar to
- the resulting controlled transition from laminar to turbulent flow typically does not give rise to vortex induced vibration.
- the illustrated stralces are of triangular cross section. It can be seen that they are hollow. This is a result of the rotational moulding process.
- the strakes protrude from the exterior of the tubular part and extend along its length but form a helix of shallow pitch. There are three parallel strakes arranged in the manner of a triple start screw thread. The result is that the cladding is equally effective for suppression of V.I. V. in flows
- each section In use several sections are placed end-to-end in a string covering a length of the elongate underwater member. Ends of each section are provided with complementary mating features so that they can be fixed together. These take the form of stubs 18 in the illustrated embodiment but it is anticipated that in a production version there may simply be a "joggle" - an enlarged diameter section at one end of each section to form a socket receiving the non-enlarged adjacent end of the neighboring section.
- the cladding can be secured in place by means of tension bands placed around it at intervals along the cladding's length. Note that the stralces are interrupted e.g.
- bands are known in this art. Typically a band is applied around each of the junctions between adjacent sections to secure them together.
- Prototype cladding of the illustrated type have been found to be more than four
- the illustrated cladding is relatively easy to handle and install.
- a moulding technique referred to as "double shotting".
- double shotting the wall of the moulding is built up in two layers. Firstly an anti-fouling material is introduced to the mould and forms an outer layer of the moulding which can be relatively thin. A structural inner layer is then formed by introducing a different material - in this case polyethylene - and continuing the rotational moulding process.
- the anti-fouling material forming the outer layer is relatively expensive but the technique allows good use to be made of this material.
- Figure 4 illustrates a portion of a wall of this multi-layer cladding in section.
- a total wall thickness of 4mm is made up of a 1mm deep outer layer 24 comprising polymer material (polyethylene, in this case) with an admixture of anti-fouling material in the form of particulate cuprous oxide.
- the cuprous oxide forms 20-30% of the mass of the outer layer 24.
- An inner polymer layer 26 lacks anti-fouling material and is in this example formed of polyethylene. This is relatively low in density and cost.
- the cladding can overall have a neutral or even
- the structural polymer need not be polyethylene.
- Many thermoplastics are suitable, including (but not restricted to) PET, Nylon, PVC, Styrene, and all Polyolefms.
- the anti-fouling composition need not be cuprousoxide as such.
- Many cuprous compositions are suitable and could be used, including cuprous thiocyanate, copper pyrithione and commercially prepared anti-fouling compositions such as copper omadine (available from Arch Chemicals).
- Non-cuprous materials may also be used, eg. zine and tin complexes, and indeed organic biocidals, several of
- the double (or multiple) shotting technique can be used to provide the product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Physical Water Treatments (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Vibration Prevention Devices (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Springs (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0414246-2A BRPI0414246A (en) | 2003-09-09 | 2004-09-09 | coating |
AU2004270951A AU2004270951B2 (en) | 2003-09-09 | 2004-09-09 | Cladding |
US10/571,143 US20070196181A1 (en) | 2003-09-09 | 2004-09-09 | Cladding |
GB0604606A GB2420608B (en) | 2003-09-09 | 2004-09-09 | Cladding |
NO20061524A NO20061524L (en) | 2003-09-09 | 2006-04-04 | cladding |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0320996.2 | 2003-09-09 | ||
GBGB0320996.2A GB0320996D0 (en) | 2003-09-09 | 2003-09-09 | Cladding |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005024247A1 true WO2005024247A1 (en) | 2005-03-17 |
Family
ID=29226692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2004/003846 WO2005024247A1 (en) | 2003-09-09 | 2004-09-09 | Cladding |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070196181A1 (en) |
AU (1) | AU2004270951B2 (en) |
BR (1) | BRPI0414246A (en) |
GB (2) | GB0320996D0 (en) |
NO (1) | NO20061524L (en) |
WO (1) | WO2005024247A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007108693A1 (en) * | 2006-03-21 | 2007-09-27 | Statoil Asa | Vibration reducer for reducing flow induced vibrations in a pipe and method of reducing such vibrations |
WO2009109776A2 (en) * | 2008-03-03 | 2009-09-11 | Trelleborg Crp Limited | Mould for forming a cladding upon an elongate member |
CN102229224A (en) * | 2011-06-10 | 2011-11-02 | 中国海洋石油总公司 | Forming die system of vortex-induced vibration suppression device in spiral strake form |
EP2623666A2 (en) * | 2012-01-31 | 2013-08-07 | Bridon Limited | Cable with an extrusion coated sheathing, corresponding method and device for manufacturing the same |
WO2013140179A2 (en) * | 2012-03-22 | 2013-09-26 | Trelleborg Offshore U.K. Limited | Cladding |
US8579546B2 (en) * | 2008-01-18 | 2013-11-12 | VIV Supression, Inc. | Apparatus and method for inhibiting vortex-induced vibration |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2436012B (en) * | 2006-03-07 | 2011-03-09 | Mcdermott Sa J Ray | Improved strakes |
GB2445751B (en) * | 2007-01-17 | 2009-02-25 | Trelleborg Crp Ltd | Fairing |
GB0900097D0 (en) * | 2009-01-07 | 2009-02-11 | Acergy Us Inc | Improvements in hybrid riser towers and fabrication thereof |
US8443896B2 (en) * | 2009-06-04 | 2013-05-21 | Diamond Offshore Drilling, Inc. | Riser floatation with anti-vibration strakes |
CN102134972B (en) * | 2010-12-31 | 2013-01-09 | 上海交通大学 | Device for inhibiting vortex-induced vibration of underwater standpipe of fish-tail imitating cowling |
IN2014KN02894A (en) * | 2012-06-28 | 2015-05-08 | Univ Danmarks Tekniske | |
US9476171B2 (en) * | 2012-06-28 | 2016-10-25 | Danmarks Tekniske Universitet | Construction and a tension element comprising a cable and one or more strakes |
DK2851490T3 (en) | 2013-09-20 | 2017-05-22 | Siemens Ag | Transport of a tower of a wind turbine |
US10473131B1 (en) * | 2016-07-10 | 2019-11-12 | VIV Solutions LLC | Helical strakes and collar |
CN106499352B (en) * | 2016-11-02 | 2018-05-04 | 西南石油大学 | A kind of vortex-induced vibration suppression device and method for installing axial slip rotary blade pair |
US20200002939A1 (en) * | 2017-02-15 | 2020-01-02 | Siemens Gamesa Renewable Energy A/S | Building structure with means to reduce induced vibrations |
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 |
NL2023435B1 (en) * | 2019-07-04 | 2021-02-02 | Lankhorst Eng Products B V | Suppression element for vortex vibrations. |
CN114005582A (en) * | 2021-10-28 | 2022-02-01 | 中天科技海缆股份有限公司 | Dynamic submarine cable, and preparation method and device thereof |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5410979A (en) * | 1994-02-28 | 1995-05-02 | Shell Oil Company | Small fixed teardrop fairings for vortex induced vibration suppression |
GB2315797A (en) * | 1996-07-31 | 1998-02-11 | Corrosion Control Internationa | Vortex shedding wraps for submerged pilings and pipes |
GB2335248A (en) | 1998-03-07 | 1999-09-15 | Crp Group Ltd | Vortex shedding claddings for submerged tubulars |
US6244204B1 (en) * | 1998-11-03 | 2001-06-12 | Odim Holding Asa | Fairing for a towed cable |
GB2362444A (en) | 2000-04-10 | 2001-11-21 | Crp Group Ltd | Protection of underwater elongate members |
GB2363363A (en) | 1999-04-08 | 2001-12-19 | Shell Int Research | System for reducing vortex induced vibration of a marine element |
US6401646B1 (en) * | 2000-09-14 | 2002-06-11 | Aims International, Inc. | Snap-on rotating reduction fairing |
GB2378969A (en) | 2001-08-23 | 2003-02-26 | Balmoral Group | Vortex-induced vibration suppression |
US6695540B1 (en) * | 2000-11-14 | 2004-02-24 | Weldon Taquino | Vortex induced vibration suppression device and method |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5423631A (en) * | 1992-03-24 | 1995-06-13 | Ngk Insulators, Ltd. | Antifouling structures |
US6896447B1 (en) * | 2000-11-14 | 2005-05-24 | Weldon Taquino | Vortex induced vibration suppression device and method |
US6565287B2 (en) * | 2000-12-19 | 2003-05-20 | Mcmillan David Wayne | Apparatus for suppression of vortex induced vibration without aquatic fouling and methods of installation |
-
2003
- 2003-09-09 GB GBGB0320996.2A patent/GB0320996D0/en not_active Ceased
-
2004
- 2004-09-09 US US10/571,143 patent/US20070196181A1/en not_active Abandoned
- 2004-09-09 BR BRPI0414246-2A patent/BRPI0414246A/en not_active Application Discontinuation
- 2004-09-09 WO PCT/GB2004/003846 patent/WO2005024247A1/en active Application Filing
- 2004-09-09 GB GB0604606A patent/GB2420608B/en not_active Expired - Fee Related
- 2004-09-09 AU AU2004270951A patent/AU2004270951B2/en not_active Ceased
-
2006
- 2006-04-04 NO NO20061524A patent/NO20061524L/en not_active Application Discontinuation
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5410979A (en) * | 1994-02-28 | 1995-05-02 | Shell Oil Company | Small fixed teardrop fairings for vortex induced vibration suppression |
GB2315797A (en) * | 1996-07-31 | 1998-02-11 | Corrosion Control Internationa | Vortex shedding wraps for submerged pilings and pipes |
GB2335248A (en) | 1998-03-07 | 1999-09-15 | Crp Group Ltd | Vortex shedding claddings for submerged tubulars |
US6244204B1 (en) * | 1998-11-03 | 2001-06-12 | Odim Holding Asa | Fairing for a towed cable |
GB2363363A (en) | 1999-04-08 | 2001-12-19 | Shell Int Research | System for reducing vortex induced vibration of a marine element |
GB2363363B (en) * | 1999-04-08 | 2002-07-17 | Shell Int Research | System for reducing vortex induced vibration of a marine element |
GB2362444A (en) | 2000-04-10 | 2001-11-21 | Crp Group Ltd | Protection of underwater elongate members |
US6401646B1 (en) * | 2000-09-14 | 2002-06-11 | Aims International, Inc. | Snap-on rotating reduction fairing |
US6695540B1 (en) * | 2000-11-14 | 2004-02-24 | Weldon Taquino | Vortex induced vibration suppression device and method |
GB2378969A (en) | 2001-08-23 | 2003-02-26 | Balmoral Group | Vortex-induced vibration suppression |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007108693A1 (en) * | 2006-03-21 | 2007-09-27 | Statoil Asa | Vibration reducer for reducing flow induced vibrations in a pipe and method of reducing such vibrations |
US8579546B2 (en) * | 2008-01-18 | 2013-11-12 | VIV Supression, Inc. | Apparatus and method for inhibiting vortex-induced vibration |
WO2009109776A2 (en) * | 2008-03-03 | 2009-09-11 | Trelleborg Crp Limited | Mould for forming a cladding upon an elongate member |
WO2009109776A3 (en) * | 2008-03-03 | 2009-12-03 | Trelleborg Crp Limited | Mould for forming a cladding upon an elongate member |
CN102229224A (en) * | 2011-06-10 | 2011-11-02 | 中国海洋石油总公司 | Forming die system of vortex-induced vibration suppression device in spiral strake form |
EP2623666A2 (en) * | 2012-01-31 | 2013-08-07 | Bridon Limited | Cable with an extrusion coated sheathing, corresponding method and device for manufacturing the same |
EP2623666A3 (en) * | 2012-01-31 | 2014-06-18 | Bridon Limited | Cable with an extrusion coated sheathing, corresponding method and device for manufacturing the same |
WO2013140179A2 (en) * | 2012-03-22 | 2013-09-26 | Trelleborg Offshore U.K. Limited | Cladding |
WO2013140179A3 (en) * | 2012-03-22 | 2013-12-27 | Trelleborg Offshore U.K. Limited | Cladding |
Also Published As
Publication number | Publication date |
---|---|
BRPI0414246A (en) | 2006-11-21 |
GB2420608B (en) | 2006-12-20 |
AU2004270951B2 (en) | 2011-01-20 |
US20070196181A1 (en) | 2007-08-23 |
AU2004270951A1 (en) | 2005-03-17 |
GB0320996D0 (en) | 2003-10-08 |
GB2420608A (en) | 2006-05-31 |
GB0604606D0 (en) | 2006-04-19 |
NO20061524L (en) | 2006-05-29 |
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