CN102966313A - Marine riser ocean flow response surface additional layer - Google Patents
Marine riser ocean flow response surface additional layer Download PDFInfo
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- CN102966313A CN102966313A CN2012104607635A CN201210460763A CN102966313A CN 102966313 A CN102966313 A CN 102966313A CN 2012104607635 A CN2012104607635 A CN 2012104607635A CN 201210460763 A CN201210460763 A CN 201210460763A CN 102966313 A CN102966313 A CN 102966313A
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- matrix
- standpipe
- marine riser
- extra play
- additional layer
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- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention provides a method and a device for designing a marine riser ocean flow response surface additional layer. On one hand, the surface additional layer can change the state of incoming flow; and on the other hand, acting force applied by a flow field to a pipe can be scattered, the acting force can also be slowly released, and vortexes and response vortex-induced and other ocean flow acting force can be better inhibited. The surface additional layer consists of a basal body and a flow disturbing body. The basal body covers the surface of the pipe and is a thin plate after the basal body is unfolded. The external surface of the basal body is geometrically rectangular or wavy. The flow disturbing body is a cluster body and consists of cluster units. Each cluster unit can be any unclosed curve body and can also be a regular closed or unclosed curve body. During use, the basal body is fixedly arranged on the outer wall of the pipe. The surface additional layer is simple to manufacture, install and maintain, and is economic and durable.
Description
Technical field
The invention belongs to sea oil drilling and production equipment technology field, what relate to is that a kind of marine riser surface is to method for designing and the device of the extra play of ocean current response.
Background technology
In offshore oil probing and recovery process, marine riser is of paramount importance a kind of transporting or water proof equipment.These elongated marine risers must stand various action of ocean current in marine environment, standpipe meets with stresses, thereby may damage and lose efficacy.A kind of typical damage type is that riser vortex swashs damage, and this damage mode is proved to be.When ocean current is flowed through standpipe, under certain flow conditions, will periodically form and discharge vortex in both sides thereafter.Vortex periodically forms and comes off and will standpipe be produced alternating action power, force standpipe with flow on the vertical direction laterally vibration; The standpipe vibration affects the flow field conversely, strengthens vortex.This interaction namely is the solid coupling of stream.Oscillation crosswise except occuring in standpipe, because current drag, standpipe also extensional vibration can occur.When Vortex frequency is consistent with the structural vibration frequency, vortex and structural vibration will lock, the structural vibration strengthen continuously, and active force is swashed in the whirlpool will cause the standpipe fatigue failure.Swash outside the active force in the whirlpool, ocean current also produces drag force and impact force to standpipe.As long as Current Movement, the flow field state that centers on standpipe changes, and standpipe must bear the active force that Current Movement produces, and may wave with Current Movement within the specific limits.Standpipe will damage and lose efficacy under these motions and effect of stress, even may cause disaster.
At present, Current Movement is mainly considered the vortex-induced vibration active force to the impact of standpipe, then considers seldom to other action of ocean current power.Usually suppress vortex-induced vibration with restraining device, these device volumes, weight are relatively large, and the scope of application has more restriction.The present invention aims to provide a kind of simple, economic, applied widely a kind of shake method and apparatus that can carry out to action of ocean current again marine riser ocean current response surface extra play (the being called for short surperficial extra play) design of significant response of inhibit feature of whirlpool that has concurrently.
Summary of the invention
It is extensive to the present invention is directed to action of ocean current, from the angle of making, installing, maintenance is simple and economic, applied widely, provides a kind of method for designing and device that the prevention vortex produced and responded the standpipe surface extra play of Current Movement that have concurrently.
Among the design, matrix carrying turbulent, it is coated on the standpipe, so that this device is fixed on the standpipe.Matrix can be exactly standpipe external surface itself; Matrix can be skim, as a piece of paper, iron sheet or plastic skin, or a slipmat of picture etc.; Can be flat, also can be corrugated.Matrix material can be rigidity or flexible, even can be cavernous body.Turbulent is that certain thickness clump formula body is arranged, and it can be mixed and disorderly form, also can be orderly form.It can be the irregular curve body, also can be the geometrical curve body of rule, such as rectangle, triangle etc.
The invention provides a kind of marine riser ocean current response surface extra play, its a kind of characteristic feature is: marine riser ocean current response surface extra play is made of turbulent and matrix.Turbulent is Cong Shiti, is fixed on the matrix, and matrix is fixed on the standpipe, directly contacts with the standpipe external surface.Cong Shiti is by clump formula cell formation, and each clump formula unit is the cluster CLB.The geometric properties of CLB is curve or straight line, can be in all directions flexural deformation.Clump formula cell distribution is on matrix, and matrix is circle ring column.
The present invention can respond the incoming flow effect, and incoming flow is carried out reaction, thereby changes near the flow field state the standpipe.This surperficial extra play can directly be processed into circle ring column when producing, also can be processed into first cuboid, cuts, is spliced into circle ring column.Turbulent can be produced respectively with clump formula unit, also can process with standpipe.This surperficial extra play is fixed on the standpipe and divides two types: can directly be sleeved on the standpipe when being processed into circle ring column, perhaps be fixed on the sleeve pipe.When or during cuboid, it is coated on docks on the standpipe and fix.
(1) based on above design, this marine riser ocean current response surface extra play has the following advantages:
(2) production is simple, installation is simple and flexibly, durable in use, easy to maintenance, whole device is very economical, wide accommodation.
(3) can respond various action of ocean current, preferably vortex-induced vibration inhibitory action is arranged, can cushion and disperse action of ocean current power.
(4) standpipe there is protective effect, can the buffering objects bump.
(5) produce in batches easily, and can cut easily one section that obtains required surperficial extra play.
(6) can be processed into an integral body with standpipe.
Description of drawings
Cross section view after this surperficial extra play of Fig. 1 launches along bus.
This figure of Fig. 2 provides clump formula unit, CLB and body upper surface shape among Fig. 1.
This surperficial extra play of Fig. 3 is installed at the schematic diagram of a joint on the marine riser, comprises cross section and shaft section sectional view.
These three unit of surperficial extra play of Fig. 4 install shaft section sectional view on the marine riser together additional.
Among the figure: 1. turbulent, 2. matrix, 3. clump formula unit, 4. CLB, 5. body upper surface.
The specific embodiment
This paper provides a kind of marine riser ocean current response surface extra play, and it is made of turbulent 1 and matrix 2.Turbulent 1 is Cong Shiti, is fixed on the matrix 2, and matrix is enclosed within on the standpipe, directly contacts with the standpipe external surface.Cong Shiti is made of clump formula unit 3, and each clump formula unit is cluster CLB 4.The geometric properties of CLB 4 is curve or straight line, can be in all directions flexural deformation.Clump formula unit 3 is distributed on the matrix, and matrix is circle ring column.
CLB 4 in the turbulent 1 in this surperficial extra play can have several forms of expression: the rectangle of any curved shape, rule and triangle etc.Matrix 2 upper surfaces 5 can be plane and wavy surface in this surperficial extra play, and matrix can be rigidity and flexible.
This surperficial extra play that is processed into circle ring column is had at the mounting method of standpipe external surface: (1) directly is socketed in the standpipe external surface; (2) be fixed on external surface by members such as buckles.Mounting method to this surperficial extra play of cuboid (namely not yet being processed into circle ring column) is: it is coated on the standpipe external surface, at joint matrix 2 is welded or snapping, perhaps adopt other docking calculation.This surperficial extra play also can be processed into an integral body with standpipe, so just removes installation process from.Matrix is enclosed within on the standpipe, can fix, and also can be revolvable.
Claims (4)
1. marine riser ocean current response surface extra play is characterized in that: this extra play is made of turbulent (1) and matrix (2); Turbulent (1) is Cong Shiti, is fixed on the matrix (2), and matrix (2) is fixed on the standpipe, directly contacts with the standpipe external surface; Cong Shiti is made of clump formula unit (3), and each clump formula unit is cluster CLB (4); The geometric properties of CLB is curve or straight line, can be in all directions flexural deformation; Clump formula unit (3) is distributed on the matrix, and matrix is circle ring column.
2. marine riser ocean current response surface extra play as claimed in claim 1 is characterized in that: take standing tube outer wall as matrix (2).
3. marine riser ocean current response surface extra play as claimed in claim 1, it is characterized in that: outer surface of matrix (5) uses wavy surface.
4. marine riser ocean current response surface extra play as claimed in claim 1 is characterized in that: this marine riser ocean current response surface extra play and the standpipe of claims 1 to 3 are processed into an integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104607635A CN102966313A (en) | 2012-11-16 | 2012-11-16 | Marine riser ocean flow response surface additional layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104607635A CN102966313A (en) | 2012-11-16 | 2012-11-16 | Marine riser ocean flow response surface additional layer |
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| Publication Number | Publication Date |
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| CN102966313A true CN102966313A (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012104607635A Pending CN102966313A (en) | 2012-11-16 | 2012-11-16 | Marine riser ocean flow response surface additional layer |
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| CN (1) | CN102966313A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112780241A (en) * | 2021-03-05 | 2021-05-11 | 西南石油大学 | Method for partitioning quantitative saturated bound water of planar heterogeneous large flat plate model |
| CN113502741A (en) * | 2021-06-15 | 2021-10-15 | 哈尔滨工业大学 | Structure for inhibiting vortex-induced vibration of cylindrical structure |
| CN113931583A (en) * | 2021-09-16 | 2022-01-14 | 建湖县永维阀门钻件有限公司 | Drilling riser protection device capable of unloading force |
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| US6152220A (en) * | 1998-06-07 | 2000-11-28 | Specialised Petroleum Services Limited | Down-hole tool with centralising component |
| US6347911B1 (en) * | 1996-06-11 | 2002-02-19 | Slickbar Products Corp. | Vortex shedding strake wraps for submerged pilings and pipes |
| CN101216138A (en) * | 2007-12-28 | 2008-07-09 | 天津大学 | Submarine pipeline vortex-induced vibration inhibiting method |
| CN101387188A (en) * | 2008-11-04 | 2009-03-18 | 中国海洋大学 | Suppressing vibration method for marine riser vortex-induced vibration and suppressing vibration apparatus thereof |
| WO2009094358A1 (en) * | 2008-01-23 | 2009-07-30 | Shell Oil Company | Methods and systems for cleaning subsea structures |
| CN102121356A (en) * | 2011-01-12 | 2011-07-13 | 中国海洋石油总公司 | Helical strake vortex induced vibration inhibiting device |
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2012
- 2012-11-16 CN CN2012104607635A patent/CN102966313A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6347911B1 (en) * | 1996-06-11 | 2002-02-19 | Slickbar Products Corp. | Vortex shedding strake wraps for submerged pilings and pipes |
| US6152220A (en) * | 1998-06-07 | 2000-11-28 | Specialised Petroleum Services Limited | Down-hole tool with centralising component |
| CN101216138A (en) * | 2007-12-28 | 2008-07-09 | 天津大学 | Submarine pipeline vortex-induced vibration inhibiting method |
| WO2009094358A1 (en) * | 2008-01-23 | 2009-07-30 | Shell Oil Company | Methods and systems for cleaning subsea structures |
| CN101387188A (en) * | 2008-11-04 | 2009-03-18 | 中国海洋大学 | Suppressing vibration method for marine riser vortex-induced vibration and suppressing vibration apparatus thereof |
| CN102121356A (en) * | 2011-01-12 | 2011-07-13 | 中国海洋石油总公司 | Helical strake vortex induced vibration inhibiting device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112780241A (en) * | 2021-03-05 | 2021-05-11 | 西南石油大学 | Method for partitioning quantitative saturated bound water of planar heterogeneous large flat plate model |
| CN113502741A (en) * | 2021-06-15 | 2021-10-15 | 哈尔滨工业大学 | Structure for inhibiting vortex-induced vibration of cylindrical structure |
| CN113931583A (en) * | 2021-09-16 | 2022-01-14 | 建湖县永维阀门钻件有限公司 | Drilling riser protection device capable of unloading force |
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Application publication date: 20130313 |