CN113958267A - Improved drilling riser assembly - Google Patents
Improved drilling riser assembly Download PDFInfo
- Publication number
- CN113958267A CN113958267A CN202111087654.9A CN202111087654A CN113958267A CN 113958267 A CN113958267 A CN 113958267A CN 202111087654 A CN202111087654 A CN 202111087654A CN 113958267 A CN113958267 A CN 113958267A
- Authority
- CN
- China
- Prior art keywords
- protection device
- riser assembly
- drilling riser
- improved drilling
- stress relief
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 claims description 2
- 239000013535 sea water Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
Classifications
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an improved drilling riser assembly, which comprises a pipeline body, wherein a limiting groove is formed in the pipeline body, a protection device is arranged in the limiting groove body, the protection device is of an annular structure, a plurality of layers of stress relief plates are arranged on the outer side of the protection device, the stress relief plates are vertically arranged on the outer side of the protection device, the thickness of the stress relief plates is gradually increased from outside to inside, longitudinal through holes are formed in the stress relief plates, and vertical reinforcing ribs are arranged on the peripheries of the outer sides of the stress relief plates.
Description
Technical Field
The invention belongs to the field of marine risers, and particularly relates to an improved drilling marine riser assembly.
Background
The marine drilling riser is a petroleum drilling device with high risk, high difficulty, high technology and high added value, is connected with a submarine blowout preventer stack and steel pipes of a floating type marine drilling device, and is mainly used for isolating seawater, leading in a drilling tool and a casing pipe and forming a channel for mud circulation. The integrality of riser is crucial to marine operation safety, when the riser is worked in the ocean, can continuously receive the effect of compound load such as wave, ocean current, the riser can produce deformation and vibrations of certain limit, when this strength is greater than the bearing range of riser, the riser will take place fatigue failure, cause the incident, and can pollute the marine environment, cause the influence that is difficult to retrieve, current seismic suppression device is with high costs, manufacturing process is complicated, heavy, the installation is loaded down with trivial details and the on-the-spot implementation operation is inconvenient not enough, need improve.
Disclosure of Invention
In order to solve the problems, the invention discloses an improved drilling riser assembly, wherein a protection device is additionally arranged outside a riser, so that the scouring of ocean currents on the riser can be reduced, the riser is protected, the structure is simple and practical, and the assembly and disassembly are convenient.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides an improved type drilling riser sub-assembly, includes the pipeline body, be equipped with the spacing groove on the pipeline body, this internal protection device that is equipped with of spacing groove, protection device is the loop configuration, and the protection device outside is equipped with a plurality of layers and unloads the power board, unload the power board and set up perpendicularly in the protection device outside, unload the power board from outer to interior thickness thickening gradually, unload and be equipped with fore-and-aft through hole on the power board, a plurality of layers unload power board outside circumference and be equipped with vertical strengthening rib.
As an improvement of the invention, the protection device is formed by combining and connecting two semicircular ring sleeves.
As an improvement of the invention, the inner wall and the upper and lower ends of the protection device are provided with buffer layers.
As an improvement of the invention, the cross section of the stress relief plate is trapezoidal or triangular.
As an improvement of the invention, the number of the limiting grooves on the pipeline body is not less than one group.
As an improvement of the invention, the force unloading plate is a spring steel plate.
As an improvement of the invention, the reinforcing ribs are 4 and are arranged in a cross shape.
The invention has the beneficial effects that:
(1) the multilayer force-unloading plate is wrapped on the outer side of the pipeline body, and the impact of the vortex on the marine riser can be quickly broken through the multilayer triangular structure;
(2) if the marine riser is impacted by transverse ocean currents, the impact force of the ocean currents can be dispersed up and down and finally collided and offset by the aid of the multi-layer triangular structure, the impact on the marine riser is weakened, if the marine riser is impacted by longitudinal ocean currents, the protection device can be decomposed layer by layer, the seawater can be divided by the aid of the triangular structure, meanwhile, the stress relief plate is provided with longitudinal through holes, the seawater passes through the through holes, resistance is reduced, deformation of the stress relief plate is small, and the service life is long;
(3) the stress relief plate is a spring steel plate, has certain deformation and resilience characteristics, can resist various complex conditions at the seabed, and provides strong protection for the marine riser;
(4) vertical reinforcing ribs are arranged on the outer circumference of the plurality of layers of the unloading plates, and the plurality of layers of the unloading plates are combined into a whole, so that the impact resistance is stronger;
(5) the protection device inner wall is equipped with the buffer layer, can alleviate the influence of horizontal impact force to the marine riser, also is equipped with the buffer layer at protection device upper and lower extreme, can alleviate the influence of longitudinal impact force to the marine riser.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of the protective device of the present invention.
Fig. 3 is a schematic diagram of the protection device and the limiting groove in matching assembly.
Fig. 4 is a force distribution diagram of the protection device according to the present invention when being impacted.
List of reference numerals:
1. the pipeline comprises a pipeline body, 2, a limiting groove, 3, a protection device, 4, a force unloading plate, 5, a through hole, 6, a reinforcing rib, 7, a ring sleeve, 8, a buffer layer, 9 and a 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.
As shown in the figure, the improved drilling riser assembly comprises a pipeline body 1, wherein a limiting groove 2 is formed in the pipeline body, a protection device 3 is arranged in the limiting groove body, the protection device 3 is of an annular structure, a plurality of layers of stress relief plates 4 are arranged on the outer side of the protection device 3, the stress relief plates 4 are vertically arranged on the outer side of the protection device 3, the thickness of the stress relief plates 4 gradually becomes thicker from outside to inside, longitudinal through holes 5 are formed in the stress relief plates 4, and vertical reinforcing ribs 6 are arranged on the peripheries of the outer sides of the stress relief plates.
The cross section of the stress relief plate 4 is trapezoidal or triangular, the multilayer stress relief plate 4 is wrapped on the outer side of the pipeline body 1, and the impact of a vortex on a marine riser can be quickly broken through the multilayer triangular structure.
If the marine riser is not in face of a vortex but in face of transverse ocean current impact, the multi-layer triangular structure can disperse the impact force of the ocean current up and down and finally collide and offset, as shown in fig. 4, the impact on the marine riser is weakened, if the marine riser is in face of longitudinal ocean current impact, the protection device can be decomposed layer by layer, the triangular structure can also shunt seawater, meanwhile, the longitudinal through holes 5 are formed in the stress relief plate, the seawater passes through the through holes, the resistance is reduced, the deformation of the stress relief plate is small, and the service life is long;
the force unloading plate 4 is a spring steel plate, has certain deformation and resilience characteristics, can resist various complex conditions of the seabed, and provides strong protection for the marine riser.
According to the invention, the vertical reinforcing ribs 6 are arranged on the outer circumferences of the layers of the force unloading plates 4, and the layers of the force unloading plates are combined into a whole, so that the impact resistance is stronger. 4 reinforcing ribs 6 are arranged in a cross shape.
The protection device 3 is formed by combining and connecting two semicircular ring sleeves 7, as shown in figure 2, the two semicircular ring sleeves 7 are connected together through bolts 9, and the protection device is convenient to assemble, disassemble and maintain.
The inner wall of the protection device 2 is provided with a buffer layer 8, so that the influence of transverse impact force on the marine riser can be relieved, and the buffer layer 8 is also arranged at the upper end and the lower end of the protection device, so that the influence of longitudinal impact force on the marine riser can be relieved.
The pipeline body 1 is provided with at least one group (two groups in figure 1) of limiting grooves 2, and the limiting grooves are wrapped on the outer side of the whole marine riser to protect the marine riser.
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. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (7)
1. An improved drilling riser assembly, comprising: the pipeline comprises a pipeline body, be equipped with the spacing groove on the pipeline body, this internal protection device that is equipped with of spacing groove, protection device is the loop configuration, and the protection device outside is equipped with a plurality of layers and unloads the power board, unload the power board and set up perpendicularly in the protection device outside, unload the power board and become thick gradually from outside to inside thickness, unload and be equipped with fore-and-aft through hole on the power board, a plurality of layers unload power board outside circumference and be equipped with vertical strengthening rib.
2. An improved drilling riser assembly according to claim 1, wherein: the protection device is formed by combining and connecting two semicircular ring sleeves.
3. An improved drilling riser assembly according to claim 1, wherein: the inner wall and the upper and lower ends of the protection device are provided with buffer layers.
4. An improved drilling riser assembly according to claim 1, wherein: the cross section of the stress relief plate is trapezoidal or triangular.
5. An improved drilling riser assembly according to claim 1, wherein: the number of the limiting grooves formed in the pipeline body is not less than one group.
6. An improved drilling riser assembly according to claim 1, wherein: the stress relief plate is a spring steel plate.
7. An improved drilling riser assembly according to claim 1, wherein: the reinforcing ribs are 4 and are arranged in a cross shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087654.9A CN113958267A (en) | 2021-09-16 | 2021-09-16 | Improved drilling riser assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087654.9A CN113958267A (en) | 2021-09-16 | 2021-09-16 | Improved drilling riser assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113958267A true CN113958267A (en) | 2022-01-21 |
Family
ID=79461795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111087654.9A Pending CN113958267A (en) | 2021-09-16 | 2021-09-16 | Improved drilling riser assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113958267A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130078039A1 (en) * | 2011-09-23 | 2013-03-28 | Sinovel Wind Grooup Co., Ltd | Protection device, offshore support platform and offshore wind turbine generator system |
| CN103485732A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of spiral strake with rotating blade |
| CN104265193A (en) * | 2014-08-13 | 2015-01-07 | 顾继俊 | Device and method for restraining vortex-induced vibration of cylindrical structural object |
| CN105604500A (en) * | 2016-03-11 | 2016-05-25 | 青岛迪玛尔海洋工程有限公司 | Underwater riser vortex-induced vibration abatement device |
| CN106641441A (en) * | 2017-02-23 | 2017-05-10 | 中国石油大学(北京) | Anti-corrosion buckle arrestor capable of suppressing vortex-induced vibration and resisting crushing expansion |
| CN107091059A (en) * | 2017-05-16 | 2017-08-25 | 哈尔滨工程大学 | A kind of flexible anti-vortex-induced vibration device for submerged riser |
| CN108661568A (en) * | 2018-05-18 | 2018-10-16 | 中国石油大学(北京) | Deep water conduit device |
| CN109751473A (en) * | 2017-11-03 | 2019-05-14 | 黄玉春 | Submarine pipeline inhibits device |
| CN110748305A (en) * | 2019-09-09 | 2020-02-04 | 建湖县永维阀门钻件有限公司 | Deepwater marine riser with protective shell |
-
2021
- 2021-09-16 CN CN202111087654.9A patent/CN113958267A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130078039A1 (en) * | 2011-09-23 | 2013-03-28 | Sinovel Wind Grooup Co., Ltd | Protection device, offshore support platform and offshore wind turbine generator system |
| CN103485732A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of spiral strake with rotating blade |
| CN104265193A (en) * | 2014-08-13 | 2015-01-07 | 顾继俊 | Device and method for restraining vortex-induced vibration of cylindrical structural object |
| CN105604500A (en) * | 2016-03-11 | 2016-05-25 | 青岛迪玛尔海洋工程有限公司 | Underwater riser vortex-induced vibration abatement device |
| CN106641441A (en) * | 2017-02-23 | 2017-05-10 | 中国石油大学(北京) | Anti-corrosion buckle arrestor capable of suppressing vortex-induced vibration and resisting crushing expansion |
| CN107091059A (en) * | 2017-05-16 | 2017-08-25 | 哈尔滨工程大学 | A kind of flexible anti-vortex-induced vibration device for submerged riser |
| CN109751473A (en) * | 2017-11-03 | 2019-05-14 | 黄玉春 | Submarine pipeline inhibits device |
| CN108661568A (en) * | 2018-05-18 | 2018-10-16 | 中国石油大学(北京) | Deep water conduit device |
| CN110748305A (en) * | 2019-09-09 | 2020-02-04 | 建湖县永维阀门钻件有限公司 | Deepwater marine riser with protective shell |
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