CN108240202A - A kind of bend limiter of super-pressure seabed compliant riser - Google Patents
A kind of bend limiter of super-pressure seabed compliant riser Download PDFInfo
- Publication number
- CN108240202A CN108240202A CN201611213651.4A CN201611213651A CN108240202A CN 108240202 A CN108240202 A CN 108240202A CN 201611213651 A CN201611213651 A CN 201611213651A CN 108240202 A CN108240202 A CN 108240202A
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- CN
- China
- Prior art keywords
- rib
- bend limiter
- sleeve
- super
- compliant riser
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
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- 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 a kind of bend limiter of super-pressure seabed compliant riser, the bend limiter includes plush copper, cylindrical neck portion and sleeve, plush copper, cylindrical neck portion and the sleeve is an integral molding structure, the plush copper, cylindrical neck portion connect to form hollow pipeline with the inside of sleeve, the sleeve is internally provided with cavity, the opening of cavity is provided with raised shoulder, first annular rib and the second circumferential rib are provided on the peripheral surface of the plush copper, the outer diameter of second circumferential rib is less than the internal diameter of raised shoulder.The bend limiter is rational in infrastructure, avoids compliant riser and generates overbending, while the structural strength of bend limiter is improved, also improves the heat dissipation performance of bend limiter simultaneously.
Description
Technical field
The present invention relates to offshore oil production production gas technology fields, and in particular to a kind of limit of super-pressure seabed compliant riser is curved
Device.
Background technology
In the prior art, compliant riser is that connection subsea production system and surface unit are most important in the exploitation of deep water hydrocarbon field
Part.The essence of compliant riser is to connect the conduit of water surface floating type device and undersea device, is in submarine pipeline whole system
Important and weak part.Compliant riser in application process, can encounter various problems, as compliant riser Upper float is being run
In generally require the power effect for bearing wind, wave and ocean current, generate complicated response, act on the top of compliant riser, make
It obtains compliant riser to move back and forth, it is possible to lead to the fatigue damage on compliant riser top and platform junction.
The structure of compliant riser is not reasonable in the prior art, and compliant riser easily occurs excessive curved in use
Song deformation, leads to overbending, can not meet the needs of modern deep-sea oil gas resource exploitation.
In addition, though the existing technical solution that compliant riser overbending is avoided using bend limiter in the prior art, still
Bend limiter structural strength of the prior art is inadequate, is particularly applying when on the compliant riser of super-pressure seabed, due to
Structural strength is not enough easy to cause the overbending that can not resist super-pressure seabed compliant riser.And it is of the prior art limit it is curved
Device heat dissipation performance is bad, can not meet the radiating requirements in deep-sea oil gas resource development process.
Invention content
The purpose of the present invention is to provide a kind of bend limiter of super-pressure seabed compliant riser, technical problem to be solved
It is the structure for the bend limiter for how improving compliant riser, improves the structural strength of bend limiter, compliant riser is avoided to generate excessively curved
Song, while it is improved the heat dissipation performance of bend limiter.
The bend limiter of super-pressure seabed of the present invention compliant riser includes plush copper, cylindrical neck portion and sleeve, described
Plush copper, cylindrical neck portion and sleeve be an integral molding structure, the plush copper, cylindrical neck portion connect shape with the inside of sleeve
Into hollow pipeline, the sleeve is internally provided with cavity, and the opening of cavity is provided with raised shoulder, the plush copper it is outer
First annular rib and the second circumferential rib are provided on circumferential surface, the outer diameter of second circumferential rib is less than the internal diameter of raised shoulder.
It is further preferred that the outer diameter of the first annular rib and the second circumferential rib is identical.
The plush copper includes tapered portion and flange, and flange is arranged on the opening of tapered portion, the first annular rib and the
Second ring rib is arranged on the outer circumference surface of tapered portion.
Multiple first longitudinal direction ribs are additionally provided on the outer circumference surface of the tapered portion, the first longitudinal direction rib is perpendicular to described
First annular rib and the second circumferential rib, multiple first longitudinal direction ribs are evenly distributed on the outer circumference surface of the tapered portion.
Multiple third circumferential ribs are provided on the outer circumference surface of the sleeve, the outer diameter of third circumferential rib is more than described first
The outer diameter of circumferential rib and the second circumferential rib.
Multiple second longitudinal direction ribs are additionally provided on the outer circumference surface of the sleeve, the second longitudinal direction rib is perpendicular to described
Three circumferential ribs, multiple second longitudinal direction ribs are evenly distributed on the outer circumference surface of the sleeve.
Technical scheme of the present invention has the following advantages that：
The bend limiter of super-pressure seabed of the present invention compliant riser is simple and reasonable, and structural strength is high, Neng Gouti
For the moment of flexure transition rigidly fixed between end of compliant riser and compliant riser, prevent compliant riser that ratio occurs in use
Larger flexural deformation avoids compliant riser and generates overbending, while the heat dissipation performance of bend limiter of the present invention obtains
Raising is arrived.
Description of the drawings
Fig. 1 is the overall structure diagram of the bend limiter of super-pressure seabed of the present invention compliant riser.
Fig. 2 is the sectional view of the bend limiter.
In figure, including：First bend limiter 1, the second bend limiter 11, plush copper 14, sleeve 16, cavity 18, raised shoulder 22, the
Three circumferential ribs 26, second longitudinal direction rib 28, cylindrical neck portion 30, tapered portion 31, first annular rib 32, the second circumferential rib 32 ', first
Longitudinal rib 34, hollow pipeline 35 and flange 38.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Figures 1 and 2 show that the overall structure of the bend limiter of super-pressure seabed of the present invention compliant riser.Fig. 1 and
The connection relation of the first bend limiter 1 and the second bend limiter 11 is illustratively described in Fig. 2, but those skilled in the art are complete
It is understood that it can be sequentially connected in actual use using any number of bend limiter, connection mode and the first bend limiter 1 and second
The connection of bend limiter 11 is identical, is sequentially connected with.
As depicted in figs. 1 and 2, the first bend limiter 1 of super-pressure seabed of the present invention compliant riser and the second limit are curved
The structure of device 11 is identical, and the first bend limiter 1 or the second bend limiter 11 include plush copper 14, cylindrical neck portion 30 and sleeve
16, the plush copper 14, cylindrical neck portion 30 and sleeve 16 are an integral molding structure, the plush copper 14, cylindrical neck portion 30
It connects to form hollow pipeline 35 with the inside of sleeve 16, the sleeve 16 is internally provided with cavity 18, the opening of cavity 18
Raised shoulder 22 is provided with, first annular 32 and second circumferential rib 32 ' of rib is provided on the peripheral surface of the plush copper 14, it is described
The outer diameter of second circumferential rib 32 ' is less than the internal diameter of raised shoulder 22.
As illustrated in fig. 1 and 2, when connection, the plush copper 14 of the first bend limiter 1 is inserted into the sleeve of the second bend limiter 11
In 16, since the outer diameter of second circumferential rib 32 ' is less than the internal diameter of raised shoulder 22 so that the plush copper 14 of the first bend limiter 1
It is stuck in the cavity 18 of the sleeve 16 of the second bend limiter 11.Super-pressure seabed compliant riser is passed through from hollow pipeline 35,
When being acted on by external force, since the plush copper 14 of the first bend limiter 1 can only be in the cavity 18 of the sleeve 16 of the second bend limiter 11
In limited space in swing, so as to prevent compliant riser that bigger flexural deformation occurs in use, keep away
Exempt from compliant riser and generate overbending.And first annular 32 and second circumferential rib 32 ' of rib is so that the structural strength of bend limiter
It is improved, also improves the heat dissipation performance of bend limiter simultaneously.
It is further preferred that the first annular rib 32 is identical with the outer diameter of the second circumferential rib 32 '.
The plush copper 14 includes tapered portion 31 and flange 38, and flange 38 is arranged on the opening of tapered portion 31, and described first
32 and second circumferential rib 32 ' of circumferential rib is arranged on the outer circumference surface of tapered portion 31.
Multiple first longitudinal direction ribs 34 are additionally provided on the outer circumference surface of the tapered portion 31, the first longitudinal direction rib 34 is vertical
In first annular 32 and second circumferential rib 32 ' of rib, multiple first longitudinal direction ribs 34 are evenly distributed on the outer of the tapered portion 31
On periphery.
Multiple third circumferential ribs 26 are provided on the outer circumference surface of the sleeve 16, the outer diameter of third circumferential rib 26 is more than institute
State the outer diameter of first annular 32 and second circumferential rib 32 ' of rib.
Be additionally provided with multiple second longitudinal direction ribs 28 on the outer circumference surface of the sleeve 16, the second longitudinal direction rib 28 perpendicular to
The third circumferential rib 26, multiple second longitudinal direction ribs 28 are evenly distributed on the outer circumference surface of the sleeve 16.
Multiple first longitudinal direction ribs 34, multiple third circumferential ribs 26 and second longitudinal direction rib 28 are again such that the structure of bend limiter
Intensity is improved, and also improves the heat dissipation performance of bend limiter simultaneously.
The interconnection of multiple bend limiter is similar with the interconnection method of two bend limiter, and details are not described herein.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention belong to the scope of protection of present invention.
Claims (6)
- A kind of 1. bend limiter of super-pressure seabed compliant riser, which is characterized in that the limit of the super-pressure seabed compliant riser Curved device includes plush copper, cylindrical neck portion and sleeve, and the plush copper, cylindrical neck portion and sleeve are an integral molding structure, described Plush copper, cylindrical neck portion connect to form hollow pipeline with the inside of sleeve, the sleeve is internally provided with cavity, cavity Opening is provided with raised shoulder, is provided with first annular rib and the second circumferential rib on the peripheral surface of the plush copper, and described The outer diameter of second ring rib is less than the internal diameter of raised shoulder.
- 2. the bend limiter of super-pressure seabed as described in claim 1 compliant riser, which is characterized in that the first annular rib and The outer diameter of second circumferential rib is identical.
- 3. the bend limiter of super-pressure seabed as claimed in claim 2 compliant riser, which is characterized in that the plush copper includes taper Portion and flange, flange are arranged on the opening of tapered portion, and the first annular rib and the second circumferential rib are arranged on the outer of tapered portion On periphery.
- 4. the bend limiter of super-pressure seabed as claimed in claim 3 compliant riser, which is characterized in that the outer circle of the tapered portion Be additionally provided with multiple first longitudinal direction ribs on circumferential surface, the first longitudinal direction rib perpendicular to the first annular rib and the second circumferential rib, Multiple first longitudinal direction ribs are evenly distributed on the outer circumference surface of the tapered portion.
- 5. the bend limiter of super-pressure seabed as claimed in claim 4 compliant riser, which is characterized in that the excircle of the sleeve It is provided with multiple third circumferential ribs on face, the outer diameter of third circumferential rib is more than the outer of the first annular rib and the second circumferential rib Diameter.
- 6. the bend limiter of super-pressure seabed as claimed in claim 5 compliant riser, which is characterized in that the excircle of the sleeve Multiple second longitudinal direction ribs are additionally provided on face, the second longitudinal direction rib is perpendicular to the third circumferential rib, multiple second longitudinal direction ribs It is evenly distributed on the outer circumference surface of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611213651.4A CN108240202A (en) | 2016-12-25 | 2016-12-25 | A kind of bend limiter of super-pressure seabed compliant riser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611213651.4A CN108240202A (en) | 2016-12-25 | 2016-12-25 | A kind of bend limiter of super-pressure seabed compliant riser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108240202A true CN108240202A (en) | 2018-07-03 |
Family
ID=62704545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611213651.4A Pending CN108240202A (en) | 2016-12-25 | 2016-12-25 | A kind of bend limiter of super-pressure seabed compliant riser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108240202A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538871A (en) * | 2018-10-24 | 2019-03-29 | 中国石油大学(北京) | Anti-bending device and flexible pipe line |
-
2016
- 2016-12-25 CN CN201611213651.4A patent/CN108240202A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538871A (en) * | 2018-10-24 | 2019-03-29 | 中国石油大学(北京) | Anti-bending device and flexible pipe line |
| CN109538871B (en) * | 2018-10-24 | 2020-03-13 | 中国石油大学(北京) | Bending prevention device and flexible pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180703 |