WO2002095278A1 - Protection of underwater elongate members - Google Patents
Protection of underwater elongate members Download PDFInfo
- Publication number
- WO2002095278A1 WO2002095278A1 PCT/GB2002/002318 GB0202318W WO02095278A1 WO 2002095278 A1 WO2002095278 A1 WO 2002095278A1 GB 0202318 W GB0202318 W GB 0202318W WO 02095278 A1 WO02095278 A1 WO 02095278A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cladding
- underwater
- grooves
- elongate
- sections
- Prior art date
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
-
- 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
-
- 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
-
- 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
Definitions
- the present invention relates to the protection of underwater pipes, drill risers,
- vortices may be shed alternately from each side.
- the member can be caused to vibrate with a large oscillation amplitude.
- an underwater cladding for an elongate member comprises a substantially cylindrical outer surface
- the grooves extend substantially parallel to the longitudinal axis of the cladding.
- Other arrangements of the grooves are however possible, within the scope of the invention.
- the grooves are helical.
- the grooves may be mutually parcel. They may be equally mutually spaced, but an unequal or even random groove spacing is also within the scope of the present invention.
- the grooves axe arranged around the whole periphery or circumference of the cladding. Circumferential coverage of the grooves ensures
- the groove depth is to be chosen with reference to the diameter of the cladding but preferably lies between 1cm and 30cm.
- the cladding may comprise positively buoyant material.
- the cladding of the present invention can comprise a buoyancy module for a drill riser. Such a buoyancy module would offset much of
- the cladding may comprise preformed sections which are subsequently
- the preformed sections may comprise semi-tubular sections.
- 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 allow the
- the grooves can be moulded into the outer surface of the preformed sections.
- the preformed sections may be moulded with a smooth outer surface and the grooves may be cut or machined or otherwise formed into the outer surface subsequently, either before or after the preformed sections are
- the cladding may be moulded directly onto the outer surface of the elongate member to be protected.
- the grooves may be moulded into
- the cladding may be moulded
- the cladding may be formed as thermal insulation.
- underwater member comprising a substantially cylindrical outer surface having a
- grooves serve to disrupt flow around the outer surface and to
- the elongate underwater member may for example be a pipe, riser, drill riser,
- the grooves may extend substantially parallel to the longitudinal axis of the cladding or may for example be helical.
- the grooves may be mutually parallel. They may be equally mutu ⁇ ly spaced, but an unequal or random groove spacing is also wtithin the scope of the second aspect of the invention.
- the grooves are arranged around the whole periphery or circumference of the cladding.
- the groove depth is to be chosen with reference to the diameter of the elongate member but preferably lies between 1cm and 30cm.
- Fig.l is a perspective view of a first underwater cladding embodying the present invention.
- Fig.2 is a similar perspective view of a further underwater cladding embodying the present invention.
- FIG.3(a)-(d) are fragmentary views in cross section of four different claddings embodying the present invention.
- Fig. 4 is a perspective view of still a further underwater cladding embodying
- Fig. 5 is a side view of yet a further underwater cladding embodying the
- Fig. 6 is a cross section along arrows X-X in Fig. 5.
- a cladding or sheath 10 for an underwater elongate member such as a pipe, drill riser, cable etc (not itself illustrated) can be seen to have
- a cylindrical outer surface 12 into which are formed several axially extending grooves 14.
- the grooves are equally spaced about the circumference of the cladding 10, although in other embodiments the circumferential spacing of the grooves may be unequal or even random.
- FIG. 2 An alternative form for the grooves is illustrated in Fig. 2 where the cladding 10' again has a cylindrical outer surface 12' but in this embodiment a plurality of grooves 14' extend helically. Thus the grooves extend both along the length of the cladding and around its circumference.
- the profile of the grooves can be chosen to provide appropriate hydrodynamic characteristics
- Figs. 3(a)-(d) show four different embodiments of the grooves
- grooves 14 (a-d) are respectively part-circular (14a), oblong (14b), tapered flat- bottomed (14c) and "V" shaped (14d).
- the examples 10, 10' of cladding shown in Figs. 1 and 2 are formed as tubes,
- GB-A-2335248 discloses such a construction in detail and Fig. 4 of the present application illustrates how cladding according to the present invention can be constructed in a similar manner.
- the cladding 20 in question forms a tubular, flexible, impervious, polyurethane casing comprising a plurality of identical, preformed, releasably
- the required length of cladding is assembled by arranging by arranging the appropriate number of sections 22 along the length of the underwater member.
- 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 assembled cladding forms a substantially cylindrical outer surface 24 but in common with previously described embodiments there are several grooves 26 formed in the outer surface and extending therealong. In the illustrated example these grooves are straight and axial but other groove formations (eg helical) may again be used.
- the cladding 20 is assembled on a pipe, drill riser, cable or other elongate underwater member and the clad elongate member is then positioned underwater.
- the grooves 26 may be moulded into the outer surface of the preformed semi- tubular sections 22.
- the preformed sections may be moulded with a smooth exterior surface (i.e. without the grooves) and the grooves may be cut or
- sections 22 are assembled on the pipe, drill riser, cable or other elongate member.
- Figs. 5 and 6 The embodiment illustrated in Figs. 5 and 6 is somewhat similar to that of the Fig. 4 embodiment. However, instead of being formed in two semi-tubular sections
- cladding 30 here comprises a plurality of
- the section In order to fit the cladding section onto an underwater pipe, cable or other elongate member, the section
- the cladding section may be provided with a spigot portion and a complementarily- shaped socket portion respectively to assist in the connecting of longitudinally
- substantially cylindrical outer surface 36 of the cladding has formed in it a set of grooves 38, these being straight and axial
- the provision of the grooves in the generally cylindrical outer surface of the cladding interrupts or reduces vortex induced vibration. Moreover, in each case, because the
- outer surface of the cladding is devoid of projections, the clad pipe, or other elongate member can be laid underwater using conventional laying mechanisms which do not
- cladding from a syntactic foam, e.g. a mixture of glass
- thermoset resin matrix with or without the inclusion of larger macrospheres.
- syntactic foam would have increased buoyancy which can be desirable in some circumstances. Indeed, the use of such a cladding is particularly suitable to enable the cladding to serve as a buoyancy module for a drill riser.
- syntactic foam would have increased buoyancy which can be desirable in some circumstances. Indeed, the use of such a cladding is particularly suitable to enable the cladding to serve as a buoyancy module for a drill riser.
- foam offsets much of the riser weight and the provision of grooves in the outer surface of the cladding in accordance with the present invention reduces or eliminates vortex induced vibrations on the riser.
- the material from which the cladding is made may incorporate an anti-fouling
- TBT tributyl tin
- a member may for example be generally in accordance with Fig. 1 or Fig. 2.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0112164.9 | 2001-05-18 | ||
GB0112164A GB0112164D0 (en) | 2001-05-18 | 2001-05-18 | Protection of underwater elongate members |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002095278A1 true WO2002095278A1 (en) | 2002-11-28 |
WO2002095278A9 WO2002095278A9 (en) | 2003-02-13 |
Family
ID=9914876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2002/002318 WO2002095278A1 (en) | 2001-05-18 | 2002-05-16 | Protection of underwater elongate members |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB0112164D0 (en) |
WO (1) | WO2002095278A1 (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007008053A1 (en) * | 2005-07-12 | 2007-01-18 | Robie Bonilla Gris | Covering element for protecting structures against scouring and drag force |
WO2007008054A1 (en) * | 2005-07-12 | 2007-01-18 | Instituto Politécnico Nacional | Mould for creating artificial roughness that protects against scouring |
WO2010141843A2 (en) | 2009-06-04 | 2010-12-09 | Diamond Offshore Drilling, Inc. | Riser floatation with anti-vibration strakes |
CN102226379A (en) * | 2011-06-20 | 2011-10-26 | 天津大学 | Sleeve for marine riser |
CN102226380A (en) * | 2011-06-20 | 2011-10-26 | 天津大学 | Method for inhibiting vortex-induced vibration of marine riser |
CN102352947A (en) * | 2011-09-09 | 2012-02-15 | 河北工程大学 | Method for suppressing vortex-induced vibration of marine oil pipeline |
CN102979490A (en) * | 2012-11-27 | 2013-03-20 | 西南石油大学 | Bubble-column vortex-induced vibration suppression device of stand pipe under marine environment |
EP2662524A1 (en) * | 2012-05-08 | 2013-11-13 | Wellstream International Limited | Flexible pipe body with buoyancy element and method of producing same |
CN103883269A (en) * | 2014-04-17 | 2014-06-25 | 西南石油大学 | Offshore drilling controllable buoyant block |
CN104455921A (en) * | 2014-12-05 | 2015-03-25 | 常熟市贝特机电制造有限公司 | Pipe material |
CN104453730A (en) * | 2014-11-10 | 2015-03-25 | 西南石油大学 | Buoyancy block surface structure for reducing ocean current resistance borne by waterproof pipe column |
CN106014275A (en) * | 2016-07-07 | 2016-10-12 | 哈尔滨工程大学 | Novel vortex-induced vibration resisting bionic riser |
WO2016205900A1 (en) | 2015-06-26 | 2016-12-29 | Amog Technologies Pty Ltd | A cylindrical element adapted to reduce vortex-induced vibration and/or drag |
WO2016205898A1 (en) | 2015-06-26 | 2016-12-29 | Amog Technologies Pty Ltd | A flow modification device, system, and method |
WO2017165926A1 (en) | 2016-04-01 | 2017-10-05 | Amog Technologies Pty Ltd | A flow modification device having helical strakes and a system and method for modifying flow |
WO2019077370A1 (en) * | 2017-10-20 | 2019-04-25 | Balmoral Comtec Limited | A cylindrical element profiled to reduce vortex induced vibration (viv) and/or drag |
US20190264833A1 (en) * | 2016-06-30 | 2019-08-29 | Trelleborg Offshore Uk Ltd | Roller |
CN110435817A (en) * | 2019-07-19 | 2019-11-12 | 中国船舶重工集团公司第七一九研究所 | A kind of sharp oise damping means of underwater bossy body stream |
CN111071389A (en) * | 2019-12-04 | 2020-04-28 | 中国船舶重工集团公司第七一五研究所 | Vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled |
CN111098978A (en) * | 2019-12-04 | 2020-05-05 | 中国船舶重工集团公司第七一五研究所 | Spiral strake vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled |
GB2592072A (en) | 2020-02-17 | 2021-08-18 | Trelleborg Offshore Uk Ltd | Cladding |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2367148A1 (en) * | 1976-10-05 | 1978-05-05 | Doris Dev Richesse Sous Marine | Vibration suppressor for water immersed column - has staggered random ribs in helical path to break up regular vortices |
GB2335248A (en) * | 1998-03-07 | 1999-09-15 | Crp Group Ltd | Vortex shedding claddings for submerged tubulars |
DE19840303A1 (en) * | 1998-09-04 | 2000-03-09 | Brandhorst Ingo | Micro turbulence generator system to reduce flow losses for motor vehicles consists of grained parts imprinted on self-adhesive foil for e.g. Formula 1 racing cars |
WO2000022328A2 (en) * | 1998-10-09 | 2000-04-20 | The Gates Corporation | Abrasion-resistant material handling hose |
WO2000061433A1 (en) * | 1999-04-08 | 2000-10-19 | Shell Internationale Research Maatschappij B.V. | System for reducing vortex induced vibration of a marine element |
WO2000075546A1 (en) * | 1999-06-08 | 2000-12-14 | Crp Group Limited | Buoyant composite material |
-
2001
- 2001-05-18 GB GB0112164A patent/GB0112164D0/en not_active Ceased
-
2002
- 2002-05-16 WO PCT/GB2002/002318 patent/WO2002095278A1/en not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2367148A1 (en) * | 1976-10-05 | 1978-05-05 | Doris Dev Richesse Sous Marine | Vibration suppressor for water immersed column - has staggered random ribs in helical path to break up regular vortices |
GB2335248A (en) * | 1998-03-07 | 1999-09-15 | Crp Group Ltd | Vortex shedding claddings for submerged tubulars |
DE19840303A1 (en) * | 1998-09-04 | 2000-03-09 | Brandhorst Ingo | Micro turbulence generator system to reduce flow losses for motor vehicles consists of grained parts imprinted on self-adhesive foil for e.g. Formula 1 racing cars |
WO2000022328A2 (en) * | 1998-10-09 | 2000-04-20 | The Gates Corporation | Abrasion-resistant material handling hose |
WO2000061433A1 (en) * | 1999-04-08 | 2000-10-19 | Shell Internationale Research Maatschappij B.V. | System for reducing vortex induced vibration of a marine element |
WO2000075546A1 (en) * | 1999-06-08 | 2000-12-14 | Crp Group Limited | Buoyant composite material |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007008054A1 (en) * | 2005-07-12 | 2007-01-18 | Instituto Politécnico Nacional | Mould for creating artificial roughness that protects against scouring |
US7628569B2 (en) | 2005-07-12 | 2009-12-08 | Bonilla Gris Robie | Covering element for protecting structures against scouring and drag force |
WO2007008053A1 (en) * | 2005-07-12 | 2007-01-18 | Robie Bonilla Gris | Covering element for protecting structures against scouring and drag force |
US8443896B2 (en) | 2009-06-04 | 2013-05-21 | Diamond Offshore Drilling, Inc. | Riser floatation with anti-vibration strakes |
WO2010141843A2 (en) | 2009-06-04 | 2010-12-09 | Diamond Offshore Drilling, Inc. | Riser floatation with anti-vibration strakes |
US9845644B2 (en) | 2009-06-04 | 2017-12-19 | Diamond Offshore Company | Riser floatation with anti-vibration strakes |
US9322221B2 (en) | 2009-06-04 | 2016-04-26 | Diamond Offshore Drilling, Inc. | Riser floatation with anti-vibration strakes |
CN102226379A (en) * | 2011-06-20 | 2011-10-26 | 天津大学 | Sleeve for marine riser |
CN102226380A (en) * | 2011-06-20 | 2011-10-26 | 天津大学 | Method for inhibiting vortex-induced vibration of marine riser |
CN102352947A (en) * | 2011-09-09 | 2012-02-15 | 河北工程大学 | Method for suppressing vortex-induced vibration of marine oil pipeline |
EP2662524A1 (en) * | 2012-05-08 | 2013-11-13 | Wellstream International Limited | Flexible pipe body with buoyancy element and method of producing same |
US8955553B2 (en) | 2012-05-08 | 2015-02-17 | Ge Oil & Gas Uk Limited | Flexible pipe body with buoyancy element and method of producing same |
CN102979490A (en) * | 2012-11-27 | 2013-03-20 | 西南石油大学 | Bubble-column vortex-induced vibration suppression device of stand pipe under marine environment |
CN103883269A (en) * | 2014-04-17 | 2014-06-25 | 西南石油大学 | Offshore drilling controllable buoyant block |
CN104453730A (en) * | 2014-11-10 | 2015-03-25 | 西南石油大学 | Buoyancy block surface structure for reducing ocean current resistance borne by waterproof pipe column |
CN104455921A (en) * | 2014-12-05 | 2015-03-25 | 常熟市贝特机电制造有限公司 | Pipe material |
CN104455921B (en) * | 2014-12-05 | 2016-08-24 | 常熟市贝特机电制造有限公司 | A kind of tubing |
WO2016205898A1 (en) | 2015-06-26 | 2016-12-29 | Amog Technologies Pty Ltd | A flow modification device, system, and method |
AU2016282213B2 (en) * | 2015-06-26 | 2020-07-30 | Amog Technologies Pty Ltd | A flow modification device, system, and method |
WO2016205900A1 (en) | 2015-06-26 | 2016-12-29 | Amog Technologies Pty Ltd | A cylindrical element adapted to reduce vortex-induced vibration and/or drag |
US10648589B2 (en) | 2015-06-26 | 2020-05-12 | Amog Technologies Pty Ltd | Cylindrical element adapted to reduce vortex-induced vibration and/or drag |
EP3314083A4 (en) * | 2015-06-26 | 2019-03-06 | Amog Technologies PTY Ltd | A flow modification device, system, and method |
EP3314082A4 (en) * | 2015-06-26 | 2019-03-20 | Amog Technologies PTY Ltd | A cylindrical element adapted to reduce vortex-induced vibration and/or drag |
US10323665B2 (en) | 2015-06-26 | 2019-06-18 | Amog Technologies Pty Ltd | Flow modification device, system, and method |
WO2017165926A1 (en) | 2016-04-01 | 2017-10-05 | Amog Technologies Pty Ltd | A flow modification device having helical strakes and a system and method for modifying flow |
US11359651B2 (en) | 2016-04-01 | 2022-06-14 | Amog Technologies Pty Ltd | Flow modification device having helical strakes and a system and method for modifying flow |
AU2017243882B2 (en) * | 2016-04-01 | 2022-08-11 | Amog Technologies Pty Ltd | A flow modification device having helical strakes and a system and method for modifying flow |
US20190264833A1 (en) * | 2016-06-30 | 2019-08-29 | Trelleborg Offshore Uk Ltd | Roller |
CN106014275A (en) * | 2016-07-07 | 2016-10-12 | 哈尔滨工程大学 | Novel vortex-induced vibration resisting bionic riser |
WO2019077370A1 (en) * | 2017-10-20 | 2019-04-25 | Balmoral Comtec Limited | A cylindrical element profiled to reduce vortex induced vibration (viv) and/or drag |
US10962035B2 (en) | 2017-10-20 | 2021-03-30 | Balmoral Comtec Limited | Cylindrical element profiled to reduce vortex induced vibration (VIV) and/or drag |
CN110435817A (en) * | 2019-07-19 | 2019-11-12 | 中国船舶重工集团公司第七一九研究所 | A kind of sharp oise damping means of underwater bossy body stream |
CN111071389A (en) * | 2019-12-04 | 2020-04-28 | 中国船舶重工集团公司第七一五研究所 | Vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled |
CN111098978A (en) * | 2019-12-04 | 2020-05-05 | 中国船舶重工集团公司第七一五研究所 | Spiral strake vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled |
GB2592072A (en) | 2020-02-17 | 2021-08-18 | Trelleborg Offshore Uk Ltd | Cladding |
WO2021165669A1 (en) | 2020-02-17 | 2021-08-26 | Trelleborg Offshore Uk Ltd | Cladding |
Also Published As
Publication number | Publication date |
---|---|
GB0112164D0 (en) | 2001-07-11 |
WO2002095278A9 (en) | 2003-02-13 |
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