WO2006033579A1 - Bend stiffener - Google Patents
Bend stiffener Download PDFInfo
- Publication number
- WO2006033579A1 WO2006033579A1 PCT/NO2005/000345 NO2005000345W WO2006033579A1 WO 2006033579 A1 WO2006033579 A1 WO 2006033579A1 NO 2005000345 W NO2005000345 W NO 2005000345W WO 2006033579 A1 WO2006033579 A1 WO 2006033579A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clamps
- bend stiffener
- pipe
- spring rods
- disclosed
- Prior art date
Links
- 239000003351 stiffener Substances 0.000 title claims abstract description 47
- 238000009434 installation Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 13
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 7
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 229910001092 metal group alloy Inorganic materials 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011208 reinforced composite material Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21B17/017—Bend restrictors for limiting stress on risers
Definitions
- the invention relates to a bend stiffener which surrounds the end portion of an elongate, essentially cylindrical object, as for instance a flexible pipe or a cable, extending from a subsea installation to a surface vessel, and is connected to an end piece or end flange of a pipe at a connection to the vessel, as disclosed in the preamble of independent claim 1.
- the object of the invention is to remedy the problems of the prior art, and this is achieved with a bend stiffener of the type mentioned above which is characterised in that the bend stiffener is provided by a plurality of inner, essentially cylindrical clamps made having longitudinal grooves for receiving spring rods in their outer surface, which clamps surround the pipe, and there is provided a plurality of outer, essentially cylindrical clamps which in their inner surface are made having longitudinal grooves for receiving the spring rods, the grooves in the inner and the outer clamps corresponding to each other when the outer clamp is mounted around the inner clamp, and a plurality of clamp sets are arranged spaced apart from each other in vicinity of the end piece, the spring rods being secured in the end piece or flange of the pipe, or an adapted arrangement on the cable, and extending longitudinally along the pipe or cable, through the grooves in the inner and outer clamps, and the outer clamps are secured to the inner clamps and lock the spring rods relative to the inner clamps and the pipe or cable.
- the bend stiffener can be mounted after the end flange (end connector) has been mounted.
- the stiffness or -characteristic of the bend stiffener can be adjusted by altering the number of spring rods, the diameter of the rods, the material or the length of the rods.
- Fig. 1 is a perspective view of a bend stiffener according to the invention mounted on a flexible pipe;
- Figures 2-5 are perspective views of, respectively, an inner clamp, an outer clamp, spring rods arranged on inner clamps which surround a flexible pipe and the bend stiffener fully mounted with the aid of the outer clamps.
- the exemplary embodiment of the invention refers to a bend stiffener for a flexible pipe
- the concept for an umbilical will basically be identical, except that the connector at the end (the end flange) will be different.
- the reference numeral 1 indicates an end piece or end flange of a flexible pipe 2, for example, a riser.
- the reference numeral 3 indicates a spring rod, 4 a fastening of the spring rods 3, 5 an inner clamp, 6 an outer clamp, 7 the bend stiffener itself and 12 a rear section or end cone.
- Figs. 2 and 3 indicate respectively the outer grooves 8 for the spring rods on the inner clamp 5 and inner grooves 8 for the spring rods 3 on the outer clamp 6.
- an end piece 1 When providing a bend stiffener 7, an end piece 1 must be mounted on a pipe 2 that is to be protected by the bend stiffener 7.
- the end piece 1 is fastened to the pipe 2 in a conventional manner.
- a rear section or end cone 12 is mounted on the pipe 2, preferably at a distance from the end piece 1.
- This rear section 12 may consist of cone segments which, in a cylindrical edge area facing the end piece 1, are provided with openings to receive/surround the end portions of spring rods 3 which project beyond the mounting clamps 5 and 6 of the bend stiffener 7 on the pipe 2 that are furthest from the end piece 1.
- the rear section thus functions primarily as a guard or shield for these end portions so that they do not protrude and potentially cause problems in that rope or other items become caught or that the ends of the rods 3 hit and damage other objects such as other pipes or the like, but it also gives the bend stiffener 7 a more streamlined termination.
- An integral fastening 4 for the spring rods 3 is provided in the end piece 1.
- the spring rods are preferably round rods made of titanium or fibre-reinforced plastic such as carbon fibre or glass fibre reinforced plastic, or another suitable material or alloy.
- the fastening 4 may be provided by providing holes in the end piece 1 for receiving the spring rods 3 that may be formed having a conical portion which rests against the end piece 1 and a threaded portion that is arranged through the holes so that the threads can engage with locking nuts, indicated by the reference numeral 4. If fibre-reinforced plastic or the like is used for the spring rods 3, it may be expedient to provide the rod ends with a steel sleeve or the like to be able to provide the desired fastening to the end piece 1.
- a plurality of essentially cylindrical inner clamps 5 with outer longitudinal grooves 8 for receiving spring rods 3 are placed around the pipe 2. Over these inner clamps are likewise arranged essentially cylindrical outer clamps 6 with corresponding inner longitudinal grooves 8 for receiving spring rods 3.
- the clamps 5 and 6 may be produced of any suitable material, and consist preferably of two or more segments that are assembled so as to provide the cylindrical shape.
- the inner clamps 5 are installed first. After they have been installed, the spring rods 3 are mounted.
- the outer clamps 6 are secured on the outside of the inner clamps 5, which locks the spring rods 3 relative to the inner clamps 5 and the pipe 2.
- the outer clamps 6 are provided with a suitable retaining device, in Fig. 3 indicated as a retaining band 11, so that they are held securely fastened in place.
- the spring rods 3 When the pipe 2 bends with the bend stiffener 7, the spring rods 3 will slide axially relative to the clamps 5 and 6. To ensure minimal frictional force between the spring rods 3 and the clamps 5 and 6, liners of a suitable material may be used (not shown) which are mounted between the clamps 5 and 6 and the spring rods 3.
- the stiffness of the bend stiffener 7 can be adjusted by altering the number of spring rods 3. Furthermore, the diameter of the rods 3, materials selection and the length of the rods 3 will be of importance. Similarly, the longitudinal distance between respective sets of clamps 5, 6 can be altered and the stiffness can also be decreased, for example, towards the end of the bend stiffener 7 by having some rods shorter than others. The characteristic or stiffness of the bend stiffener 7 can also be affected by using rods 3 of different materials in the same unit.
- the bend stiffener 7 can be provided in any suitable length, but the spring rods 3 typically have a length in the range of 4 to 10 metres.
- the clamps 5 and 6 can be provided in any suitable material, in different dimensions depending on the diameter of the object they are to surround, and the number of rods that are used can also be chosen as required.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Clamps And Clips (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Joints Allowing Movement (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05786655.0A EP1794407B1 (en) | 2004-09-23 | 2005-09-19 | Bend stiffener |
BRPI0515566A BRPI0515566B1 (en) | 2004-09-23 | 2005-09-19 | elbow stiffener |
AU2005285703A AU2005285703B2 (en) | 2004-09-23 | 2005-09-19 | Bend stiffener |
MX2007003455A MX2007003455A (en) | 2004-09-23 | 2005-09-19 | Bend stiffener. |
US11/575,532 US7568861B2 (en) | 2004-09-23 | 2005-09-19 | Bend stiffener |
CN2005800322409A CN101035962B (en) | 2004-09-23 | 2005-09-19 | Bend stiffener |
DK05786655.0T DK1794407T3 (en) | 2004-09-23 | 2005-09-19 | bend stiffener |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20043980A NO321079B1 (en) | 2004-09-23 | 2004-09-23 | stiffeners |
NO20043980 | 2004-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006033579A1 true WO2006033579A1 (en) | 2006-03-30 |
Family
ID=35057635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO2005/000345 WO2006033579A1 (en) | 2004-09-23 | 2005-09-19 | Bend stiffener |
Country Status (9)
Country | Link |
---|---|
US (1) | US7568861B2 (en) |
EP (1) | EP1794407B1 (en) |
CN (1) | CN101035962B (en) |
AU (1) | AU2005285703B2 (en) |
BR (1) | BRPI0515566B1 (en) |
DK (1) | DK1794407T3 (en) |
MX (1) | MX2007003455A (en) |
NO (1) | NO321079B1 (en) |
WO (1) | WO2006033579A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7469722B2 (en) | 2006-12-19 | 2008-12-30 | Norvald Berland | Segmented bend stiffener |
WO2010109124A1 (en) * | 2009-03-24 | 2010-09-30 | Technip France | Protective sleeve for a flexible pipe |
WO2011117567A3 (en) * | 2010-03-20 | 2012-07-26 | Expro Ax-S Technology Ltd | Support apparatus for elongate member |
EP2503093A2 (en) | 2011-03-21 | 2012-09-26 | Nexans | Module based bend stiffener |
WO2015189291A1 (en) * | 2014-06-11 | 2015-12-17 | Technip France | Bend stiffener for an elongate element to be placed in a body of water |
CN107289231A (en) * | 2017-08-25 | 2017-10-24 | 章俊 | A kind of anti-based on teeth pounds municipal works pipeline |
CN107504322A (en) * | 2017-08-25 | 2017-12-22 | 章俊 | A kind of anti-based on flywheel ring pounds municipal works pipeline |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2891577B1 (en) * | 2005-10-04 | 2007-11-16 | Inst Francais Du Petrole | UPLINK COLUMN WITH CONDUITS AUXILIARES MOUNTED ON TOURILLONS. |
FR2891579B1 (en) * | 2005-10-04 | 2007-11-23 | Inst Francais Du Petrole | UPLINK COLUMN WITH RIGID AUXILIARY PIPES. |
FR2892170B1 (en) * | 2005-10-18 | 2008-01-18 | Financ De Beaumont Fdb Soc Par | DEVICE FOR MAINTAINING AND DAMPING IN THE POSITION OF LARGE LENGTH TUBES OR PIPELINES WITH RESPECT TO FIXED SUPPORT STRUCTURES |
US7798234B2 (en) * | 2005-11-18 | 2010-09-21 | Shell Oil Company | Umbilical assembly, subsea system, and methods of use |
EP2035648B1 (en) * | 2006-06-16 | 2010-08-18 | Seaproof Solutions As | Polymer matrix reinforced stiffening element and method of producing the same |
GB0710585D0 (en) * | 2007-06-02 | 2007-07-11 | Polyoil Ltd | Oil and gas apparatus and method |
US20090032652A1 (en) * | 2007-07-19 | 2009-02-05 | Anatoly Gosis | System for moving and storing a conduit for supplying air to an aircraft |
US20090212092A1 (en) * | 2008-02-21 | 2009-08-27 | Israel Stol | Method for forming friction welded compression based tubular structures |
US10309162B2 (en) | 2010-07-05 | 2019-06-04 | Acergy France SAS | Techniques for coating pipes |
GB2533645B (en) | 2014-12-24 | 2017-09-20 | Subsea 7 Ltd | Insulating inserts for field joints of coated rigid pipelines |
US8657013B2 (en) * | 2011-08-19 | 2014-02-25 | Cameron International Corporation | Riser system |
EP2923131A4 (en) * | 2012-11-20 | 2016-08-03 | Nat Oilwell Varco Denmark Is | An assembly of a flexible pipe and an end-fitting |
CA2930654C (en) | 2013-11-14 | 2021-12-28 | Statoil Petroleum As | Bend stiffener |
US20150136417A1 (en) * | 2013-11-15 | 2015-05-21 | Stingray Offshore Solutions Llc | Method for handling tubulars and rigidizer therefor |
CN105317220B (en) * | 2014-07-18 | 2017-05-24 | 中联重科股份有限公司 | Material conveyance hose protecting device, distributing mechanism and concrete pumping equipment |
CN104633320B (en) * | 2015-02-11 | 2016-11-23 | 姜考成 | The method for designing of a kind of armored sludge discharge pipe and discharge pipeline thereof |
US10066450B2 (en) * | 2015-08-19 | 2018-09-04 | The Technologies Alliance, Inc. | Bending and torsional stiffener for a riser tensioner |
DK3306031T3 (en) * | 2016-10-05 | 2023-09-04 | Nexans | DEVICE FOR EXTENSION OF FATIGUE LIFE |
GB201621119D0 (en) * | 2016-12-12 | 2017-01-25 | Ge Oil & Gas Uk Ltd | Device and method |
CN110792875A (en) * | 2017-08-25 | 2020-02-14 | 杭州富阳鸿祥技术服务有限公司 | Prevent pounding municipal works pipeline based on rack gear |
CN107524885B (en) * | 2017-08-25 | 2019-12-03 | 杭州富阳鸿祥技术服务有限公司 | A kind of municipal works are using preventing the pipeline smashed |
CN113217295B (en) * | 2021-06-21 | 2022-07-08 | 中天科技海缆股份有限公司 | Shallow water floating type wind power system and dynamic cable assembly thereof |
CN114033898B (en) * | 2021-11-09 | 2023-08-08 | 日木智能控制技术股份有限公司 | Bending automatic reset sampling heat tracing composite pipeline and manufacturing method thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3252192A (en) | 1964-04-01 | 1966-05-24 | Joseph B Smith | Clamp ring for pipe and the like |
US4363567A (en) * | 1979-09-12 | 1982-12-14 | Shell Oil Company | Multiple bore marine riser with flexible reinforcement |
US5161828A (en) | 1991-07-31 | 1992-11-10 | Cooper Industries, Inc. | Break-away flowline fitting |
US5439323A (en) | 1993-07-09 | 1995-08-08 | Westinghouse Electric Corporation | Rod and shell composite riser |
GB2291686A (en) * | 1994-07-23 | 1996-01-31 | Crp Group Ltd | Bend stiffeners |
WO1998041729A1 (en) * | 1997-03-14 | 1998-09-24 | Coflexip | Device for limiting the bending radius of a flexible duct |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4635970A (en) * | 1983-10-07 | 1987-01-13 | Haines Robert E | Thrust rod anchor for pipe joint restraint systems |
US6561714B1 (en) * | 2000-11-20 | 2003-05-13 | Michael R. Williams | Breakaway joint for subsea components |
FR2821143B1 (en) * | 2001-02-19 | 2003-05-02 | Bouygues Offshore | LOW-SURFACE LINK INSTALLATION OF A LARGE-DEPTH, SUB-SUBMARINE PIPELINE OF THE TOUR-HYBRID TYPE |
-
2004
- 2004-09-23 NO NO20043980A patent/NO321079B1/en not_active IP Right Cessation
-
2005
- 2005-09-19 MX MX2007003455A patent/MX2007003455A/en active IP Right Grant
- 2005-09-19 DK DK05786655.0T patent/DK1794407T3/en active
- 2005-09-19 CN CN2005800322409A patent/CN101035962B/en not_active Expired - Fee Related
- 2005-09-19 WO PCT/NO2005/000345 patent/WO2006033579A1/en active Application Filing
- 2005-09-19 AU AU2005285703A patent/AU2005285703B2/en not_active Ceased
- 2005-09-19 EP EP05786655.0A patent/EP1794407B1/en not_active Not-in-force
- 2005-09-19 US US11/575,532 patent/US7568861B2/en not_active Expired - Fee Related
- 2005-09-19 BR BRPI0515566A patent/BRPI0515566B1/en not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3252192A (en) | 1964-04-01 | 1966-05-24 | Joseph B Smith | Clamp ring for pipe and the like |
US4363567A (en) * | 1979-09-12 | 1982-12-14 | Shell Oil Company | Multiple bore marine riser with flexible reinforcement |
US5161828A (en) | 1991-07-31 | 1992-11-10 | Cooper Industries, Inc. | Break-away flowline fitting |
US5439323A (en) | 1993-07-09 | 1995-08-08 | Westinghouse Electric Corporation | Rod and shell composite riser |
GB2291686A (en) * | 1994-07-23 | 1996-01-31 | Crp Group Ltd | Bend stiffeners |
WO1998041729A1 (en) * | 1997-03-14 | 1998-09-24 | Coflexip | Device for limiting the bending radius of a flexible duct |
Non-Patent Citations (1)
Title |
---|
See also references of EP1794407A4 * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7469722B2 (en) | 2006-12-19 | 2008-12-30 | Norvald Berland | Segmented bend stiffener |
AU2010227404B2 (en) * | 2009-03-24 | 2015-04-02 | Technip France | Protective sleeve for a flexible pipe |
WO2010109124A1 (en) * | 2009-03-24 | 2010-09-30 | Technip France | Protective sleeve for a flexible pipe |
FR2943758A1 (en) * | 2009-03-24 | 2010-10-01 | Technip France | PROTECTION SLEEVE FOR FLEXIBLE DRIVING |
US9188266B2 (en) | 2009-03-24 | 2015-11-17 | Technip France | Protective sleeve for a flexible pipe |
WO2011117567A3 (en) * | 2010-03-20 | 2012-07-26 | Expro Ax-S Technology Ltd | Support apparatus for elongate member |
US8869840B2 (en) | 2011-03-21 | 2014-10-28 | Nexans | Module based bend stiffener |
EP2503093A2 (en) | 2011-03-21 | 2012-09-26 | Nexans | Module based bend stiffener |
WO2015189291A1 (en) * | 2014-06-11 | 2015-12-17 | Technip France | Bend stiffener for an elongate element to be placed in a body of water |
FR3022291A1 (en) * | 2014-06-11 | 2015-12-18 | Technip France | BENDING STIFFENER FOR AN EXTENSION ELEMENT INTENDED TO BE INTRODUCED INTO A RANGE OF WATER |
CN107289231A (en) * | 2017-08-25 | 2017-10-24 | 章俊 | A kind of anti-based on teeth pounds municipal works pipeline |
CN107504322A (en) * | 2017-08-25 | 2017-12-22 | 章俊 | A kind of anti-based on flywheel ring pounds municipal works pipeline |
CN107289231B (en) * | 2017-08-25 | 2018-12-25 | 浙江和海建设科技集团有限公司 | A kind of anti-based on teeth pounds municipal works pipeline |
Also Published As
Publication number | Publication date |
---|---|
CN101035962A (en) | 2007-09-12 |
NO20043980D0 (en) | 2004-09-23 |
MX2007003455A (en) | 2007-08-06 |
NO20043980A (en) | 2006-03-13 |
US20070292214A1 (en) | 2007-12-20 |
AU2005285703B2 (en) | 2009-10-29 |
DK1794407T3 (en) | 2014-05-05 |
EP1794407A4 (en) | 2012-09-26 |
AU2005285703A1 (en) | 2006-03-30 |
EP1794407A1 (en) | 2007-06-13 |
US20090080982A9 (en) | 2009-03-26 |
US7568861B2 (en) | 2009-08-04 |
BRPI0515566B1 (en) | 2016-04-26 |
EP1794407B1 (en) | 2014-01-29 |
NO321079B1 (en) | 2006-03-13 |
BRPI0515566A (en) | 2008-07-29 |
CN101035962B (en) | 2010-11-03 |
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