CN110671059A - Device for restraining vortex-induced vibration of marine drilling riser and preparation method thereof - Google Patents
Device for restraining vortex-induced vibration of marine drilling riser and preparation method thereof Download PDFInfo
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- CN110671059A CN110671059A CN201910852453.XA CN201910852453A CN110671059A CN 110671059 A CN110671059 A CN 110671059A CN 201910852453 A CN201910852453 A CN 201910852453A CN 110671059 A CN110671059 A CN 110671059A
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- induced vibration
- outer ring
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- flow guide
- riser
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- 238000005553 drilling Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims description 6
- 230000000452 restraining effect Effects 0.000 title claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000001629 suppression Effects 0.000 abstract description 13
- 230000002401 inhibitory effect Effects 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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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
-
- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/041—Devices damping pulsations or vibrations in fluids specially adapted for preventing vibrations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a device for inhibiting vortex-induced vibration of a marine drilling riser, which comprises a plurality of rotary covers, wherein each rotary cover is divided into an inner ring and an outer ring, grooves are formed in the outer side of the inner ring and the inner side of the outer ring, balls are arranged in the grooves, the inner rings of the rotary covers are sleeved on the outer side of a riser body side by side, 2-4 groups of flow guide blocks are arranged on the outer side of the outer ring, each group of flow guide blocks is circumferentially unfolded into a transverse continuous 8-shaped structure, and a gap is formed between the upper group of. The vortex induced vibration suppression device adopts a bearing type inner ring and outer ring structure, the buffer layer is arranged in the bearing type inner ring and the outer ring rotates while the inner ring is still, the vortex induced vibration suppression device has two functions of vortex induced vibration suppression and anti-collision protection, vortex discharge is weakened and transverse vibration is suppressed by the drainage of the gap and radian of the outer ring and the rotation of the outer ring when the vortex induced vibration suppression device faces ocean currents, the vortex induced vibration suppression device can suppress the vortex induced vibration in all directions, and the vortex induced vibration suppression device is convenient to use, reliable in performance, low in.
Description
Technical Field
The invention belongs to the technical field of marine risers, and particularly relates to a device for restraining vortex-induced vibration of a marine drilling riser and a preparation method of the device.
Background
The offshore marine riser is a casing pipe from the bottom of an offshore drilling platform to the shallow seabed, and is mainly used for isolating seawater, leading in a drilling tool and the casing pipe and forming a channel for slurry circulation; and simultaneously, the device is used as a holding structure of an offshore wellhead. The integrity of the riser is critical to offshore operations safety. The riser is continuously subjected to the action of composite loads such as waves, ocean currents and the like in the ocean, when the ocean currents bypass the riser, differential pressure resistance is formed in the front and the back of the riser, and dragging force is formed on the cylindrical surface of the riser, so that the riser vibrates longitudinally; in addition, alternately-shedding vortexes are generated at the two sides behind the marine riser, so that a lift force perpendicular to the flow direction is additionally applied to the marine riser, and the alternate change of the lift force direction causes the transverse vibration of the marine riser, which is more severe; when the vortex shedding frequency is close to a certain natural frequency of vibration of the marine riser, the vibration of the structure can force the vortex shedding frequency to be fixed at a certain natural frequency of the cylinder in a larger flow velocity range, and a locking phenomenon, namely resonance, occurs, so that the marine riser is in fatigue failure. Once the marine riser is damaged by fatigue, not only can serious safety accidents at sea be caused, and huge economic loss is caused, but also catastrophic damage can be caused to the marine environment.
The existing marine riser vortex-induced vibration suppression device has the defects of high cost, complex manufacturing process, heavy weight, fussy installation, inconvenient field implementation and operation and the like, and needs to be improved.
Disclosure of Invention
In order to solve the problems, the invention discloses a device for inhibiting vortex-induced vibration of a marine drilling riser and a preparation method thereof, and the device has the advantages of simple structure, convenience in use, reliable performance, low cost, corrosion resistance and long service life.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a device of marine drilling riser restraines vortex induced vibration, includes a plurality of rotatory covers, rotatory cover divide into inner circle and outer lane, and the inner circle outside and outer lane inboard are equipped with the recess, are equipped with the ball in the recess, rotatory cover inner circle is overlapped in the riser body outside side by side, the outer lane outside is equipped with 2-4 water conservancy diversion pieces, and every water conservancy diversion piece circumference of group expandes into horizontal continuous 8 types, is equipped with the clearance between the upper and lower two sets of water conservancy diversion pieces.
As an improvement of the invention, a buffer layer is arranged between the inner ring of the rotating cover and the riser body.
As an improvement of the invention, the flow guide block is connected with the outer ring through a stainless steel countersunk head bolt.
As an improvement of the invention, the surface of each flow guide block is in a wave shape, the thickest part of the flow guide block is 0.02D, and the thinnest part of the flow guide block is 0.01D (D is the outer diameter of the marine riser body).
As a modification of the present invention, the gap is 0.02 to 0.04D.
As an improvement of the invention, each flow guide block is oval.
The preparation method of the device for inhibiting the vortex-induced vibration of the marine drilling riser comprises the following steps: firstly, wrapping the buffer layer on the side surface of the marine riser, then, enabling the height of an inner ring of the rotary cover to be outside the buffer layer, arranging an outer ring of the rotary cover outside the inner ring, embedding a ball in the middle, installing a flow guide block on one block, and enabling the gap between the upper group of flow guide blocks and the lower group of flow guide blocks to be 0.02-0.04D.
The invention has the beneficial effects that:
the device for inhibiting vortex-induced vibration of the marine drilling riser disclosed by the invention adopts a bearing type inner and outer ring structure, the buffer layer is arranged in the device, the device has two functions of inhibiting vortex-induced vibration and anti-collision protection, when the device faces ocean currents, vortex discharge is weakened through the drainage of the outer ring gap and radian and the rotation of the outer ring, the transverse vibration is inhibited, the vortex-induced vibration can be inhibited in all directions, the use is convenient, the performance is reliable, the cost is low, the corrosion is not easy, and the service life is long.
Drawings
FIG. 1 is a top view of the present invention.
Fig. 2 is a front view of the outer race of the present invention.
List of reference numerals:
1. inner circle, 2, outer lane, 3, ball, 4, marine riser body, 5, water conservancy diversion piece, 6, clearance, 7, buffer layer, 8, countersunk head bolt.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in the figure, the device for inhibiting vortex-induced vibration of the marine drilling riser comprises a plurality of rotary covers, wherein each rotary cover is divided into an inner ring 1 and an outer ring 2, grooves are formed in the outer sides of the inner rings 1 and the outer rings 2, balls 3 are arranged in the grooves, the inner rings 1 of the rotary covers are sleeved on the outer sides of a riser body 4 side by side, 2-4 groups of flow guide blocks 5 are arranged on the outer sides of the outer rings 2, each group of flow guide blocks is circumferentially unfolded into a transverse continuous 8-shaped structure, the surface of each flow guide block 5 is wavy and is convenient for guiding ocean current, the thickest part of each flow guide block 5 is 0.02D, the thinnest part of each flow guide block is 0.01D (D is the outer diameter of the riser body), a gap 6 is formed between the upper group of flow guide blocks and the lower group of flow guide blocks 5.
According to the invention, the buffer layer 7 is arranged between the inner ring 1 of the rotating cover and the marine riser body 4, so that the impact force is reduced, and the marine riser body is protected.
The guide block 5 is connected with the outer ring 2 through the stainless steel countersunk head bolt 8, so that the guide block is convenient to replace and the cost is saved.
Each flow guide block 5 is oval, and the side surface of each flow guide block is streamline, so that the ocean current is guided conveniently.
The vortex induced vibration suppression device adopts a bearing type inner ring and outer ring structure, the buffer layer is arranged in the bearing type inner ring and the outer ring rotates while the inner ring is still, the vortex induced vibration suppression device has two functions of vortex induced vibration suppression and anti-collision protection, vortex discharge is weakened and transverse vibration is suppressed by the drainage of the gap and radian of the outer ring and the rotation of the outer ring when the vortex induced vibration suppression device faces ocean currents, the vortex induced vibration suppression device can suppress the vortex induced vibration in all directions, and the vortex induced vibration suppression device is convenient to use, reliable in performance, low in.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features.
Claims (7)
1. A device for restraining vortex-induced vibration of marine drilling riser is characterized in that: the marine riser water-stop pipe comprises a plurality of rotary covers, wherein each rotary cover is divided into an inner ring and an outer ring, grooves are formed in the outer side of the inner ring and the inner side of the outer ring, balls are arranged in the grooves, the inner rings of the rotary covers are sleeved on the outer side of a riser body side by side, 2-4 groups of flow guide blocks are arranged on the outer side of the outer ring, each group of flow guide blocks is circumferentially unfolded into a transverse continuous 8-shaped structure, and a gap is.
2. The apparatus of claim 1, wherein the marine drilling riser comprises: and a buffer layer is arranged between the inner ring of the rotating cover and the marine riser body.
3. The apparatus of claim 1, wherein the marine drilling riser comprises: the flow guide block is connected with the outer ring through a stainless steel countersunk head bolt.
4. The apparatus of claim 1, wherein the marine drilling riser comprises: the surface of each guide block is wavy, the thickest part of each guide block is 0.02D, and the thinnest part of each guide block is 0.01D.
5. The apparatus of claim 1, wherein the marine drilling riser comprises: the gap is 0.02-0.04D.
6. The apparatus of claim 1, wherein the marine drilling riser comprises: each flow guide block is oval.
7. A preparation method of a device for restraining vortex-induced vibration of an offshore drilling riser is characterized by comprising the following steps: firstly, wrapping the buffer layer on the side surface of the marine riser, then, enabling the height of an inner ring of the rotary cover to be outside the buffer layer, arranging an outer ring of the rotary cover outside the inner ring, embedding a ball in the middle, installing a flow guide block on one block, and enabling the gap between the upper group of flow guide blocks and the lower group of flow guide blocks to be 0.02-0.04D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852453.XA CN110671059A (en) | 2019-09-09 | 2019-09-09 | Device for restraining vortex-induced vibration of marine drilling riser and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852453.XA CN110671059A (en) | 2019-09-09 | 2019-09-09 | Device for restraining vortex-induced vibration of marine drilling riser and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110671059A true CN110671059A (en) | 2020-01-10 |
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| CN201910852453.XA Pending CN110671059A (en) | 2019-09-09 | 2019-09-09 | Device for restraining vortex-induced vibration of marine drilling riser and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140570A (en) * | 2020-01-21 | 2020-05-12 | 天津大学 | Marine pipeline vortex-induced vibration suppression device with ribbons |
| CN113898297A (en) * | 2021-09-16 | 2022-01-07 | 建湖县永维阀门钻件有限公司 | Subsea production riser protector |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040051004A1 (en) * | 2000-06-01 | 2004-03-18 | Bearman Peter William | Vortex shedding and drag force reduction |
| CN202510918U (en) * | 2012-04-27 | 2012-10-31 | 西南石油大学 | W-shaped device for inhibiting vortex induced vibration of marine riser |
| CN104265193A (en) * | 2014-08-13 | 2015-01-07 | 顾继俊 | Device and method for restraining vortex-induced vibration of cylindrical structural object |
| CN105201420A (en) * | 2015-10-13 | 2015-12-30 | 西南石油大学 | Active vortex-induced vibration suppression device |
| CN106741685A (en) * | 2016-11-17 | 2017-05-31 | 大连理工大学 | One kind suppresses vortex-induced vibration skin clothing |
| CN106930705A (en) * | 2016-04-01 | 2017-07-07 | 山东科技大学 | A kind of standpipe vortex-induced vibration Omnidirectional rotation turbine flow-disturbing vibration-repressing device |
| CN206845111U (en) * | 2017-06-28 | 2018-01-05 | 西南石油大学 | A kind of spiral plate vortex-induced vibration suppression device of spinning |
| CN207004441U (en) * | 2017-07-24 | 2018-02-13 | 西南石油大学 | A kind of surface sets screw slotting and raised standpipe vortex-induced vibration suppression device |
-
2019
- 2019-09-09 CN CN201910852453.XA patent/CN110671059A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040051004A1 (en) * | 2000-06-01 | 2004-03-18 | Bearman Peter William | Vortex shedding and drag force reduction |
| CN202510918U (en) * | 2012-04-27 | 2012-10-31 | 西南石油大学 | W-shaped device for inhibiting vortex induced vibration of marine riser |
| CN104265193A (en) * | 2014-08-13 | 2015-01-07 | 顾继俊 | Device and method for restraining vortex-induced vibration of cylindrical structural object |
| CN105201420A (en) * | 2015-10-13 | 2015-12-30 | 西南石油大学 | Active vortex-induced vibration suppression device |
| CN106930705A (en) * | 2016-04-01 | 2017-07-07 | 山东科技大学 | A kind of standpipe vortex-induced vibration Omnidirectional rotation turbine flow-disturbing vibration-repressing device |
| CN106741685A (en) * | 2016-11-17 | 2017-05-31 | 大连理工大学 | One kind suppresses vortex-induced vibration skin clothing |
| CN206845111U (en) * | 2017-06-28 | 2018-01-05 | 西南石油大学 | A kind of spiral plate vortex-induced vibration suppression device of spinning |
| CN207004441U (en) * | 2017-07-24 | 2018-02-13 | 西南石油大学 | A kind of surface sets screw slotting and raised standpipe vortex-induced vibration suppression device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140570A (en) * | 2020-01-21 | 2020-05-12 | 天津大学 | Marine pipeline vortex-induced vibration suppression device with ribbons |
| CN113898297A (en) * | 2021-09-16 | 2022-01-07 | 建湖县永维阀门钻件有限公司 | Subsea production riser protector |
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Application publication date: 20200110 |