CN208564465U - A kind of offshore oil drilling riser buoyance compensation device - Google Patents
A kind of offshore oil drilling riser buoyance compensation device Download PDFInfo
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- CN208564465U CN208564465U CN201820734329.4U CN201820734329U CN208564465U CN 208564465 U CN208564465 U CN 208564465U CN 201820734329 U CN201820734329 U CN 201820734329U CN 208564465 U CN208564465 U CN 208564465U
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- buoyant mass
- buoyance
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Abstract
The utility model belongs to riser buoyance compensation device field, in particular to a kind of offshore oil drilling riser buoyance compensation device, the offshore oil drilling riser buoyance compensation device includes the buoyant mass axially extending along marine riser, the buoyant mass inner surface is provided with the cambered surface matched with marine riser main pipeline, and the buoyant mass inner surface is provided with the notch axially extended matched with subsidiary conduit.The utility model provides a kind of durable, at low cost, standardized offshore oil drilling riser buoyance compensation device.
Description
Technical field
The utility model belongs to riser buoyance compensation device field, in particular to a kind of offshore oil drilling marine riser is floating
Force compensating device.
Background technique
During marine petroleum exploitation, drilling water-separation pipe is between sea bed and production platform, as the conduit of drilling rod,
Mainly for the protection of internal drilling rod and provide transport channel.It by series of identical or similar carbon steel material pipeline
Composition.Under deep-marine-environment, marine riser itself has huge weight, it is connected with the stretcher of offshore drilling platform, prevents
Inner drill rods bend.However, needing to mitigate marine riser in water to guarantee that pulling force is in the reasonable scope suffered by stretcher
Net weight to reduce the pulling force of stretcher.For this purpose, buoyancy compensation device is mounted with outside marine riser, buoyancy compensation device packet
A series of buoyant mass along marine riser axial direction are contained, these blocks are usually made of light material such as composite foam, have cost
It is low, it is high pressure resistant the features such as.Themselves lighter in weight, density is usually in 0.29-0.48g/cm3.Buoyant mass generates upward
Lifting force passes to marine riser by the thrust ring being mounted on pipeline.With the increase of the drilling depth of water, for it is standardized every
The demand of water pipe buoyant mass is obviously improved.
Therefore, these problems are based on, a kind of durable, at low cost, standardized offshore oil drilling riser buoyance is provided
Compensation device has important practical significance.
Utility model content
The utility model is to solve technical problem present in well-known technique and provide a kind of durable, at low cost, standardization
Offshore oil drilling riser buoyance compensation device.
The utility model is adopted the technical scheme that solve technical problem present in well-known technique:
A kind of offshore oil drilling riser buoyance compensation device, the offshore oil drilling riser buoyance compensation device
Including the buoyant mass axially extending along marine riser, the buoyant mass inner surface is provided with the cambered surface matched with marine riser main pipeline,
The buoyant mass inner surface is provided with the notch axially extended matched with subsidiary conduit.
The utility model can also use following technical scheme:
In above-mentioned offshore oil drilling riser buoyance compensation device, further, the quantity of the buoyant mass is
Two, the buoyant mass outer surface is provided with plane notch, and two buoyant mass are tightened together by stud, described double
Hook bolt is passed through out of described plane notch.
In above-mentioned offshore oil drilling riser buoyance compensation device, further, in the buoyant mass inner surface
The semicircular notch axially extending along marine riser there are two being opened in plane between outer surface, two phases of two buoyant mass
Pair semicircular notch combine and constitute the through-hole that passes through for pipeline.
In above-mentioned offshore oil drilling riser buoyance compensation device, further, the diameter of the notch is bigger
In the diameter of subsidiary conduit, the diameter of the through-hole is slightly larger than the diameter of the pipeline.
In above-mentioned offshore oil drilling riser buoyance compensation device, further, the buoyant mass inner surface
Cambered surface diameter is slightly larger than marine riser main pipeline diameter.
In above-mentioned offshore oil drilling riser buoyance compensation device, further, between two buoyant mass
There are gaps.
In above-mentioned offshore oil drilling riser buoyance compensation device, further, the buoyant mass end face and institute
The junction for stating buoyant mass periphery is equipped with chamfering.
In above-mentioned offshore oil drilling riser buoyance compensation device, further, on the end face of the buoyant mass
It is provided with cavity, the cavity profile arc shape is consistent with internal pipeline arc shape, is connected between cambered surface by plane, the sky
Chamber overall size is greater than the size of buoyant mass inner surface notch and cambered surface.
In above-mentioned offshore oil drilling riser buoyance compensation device, further, the cylinder in the buoyant mass
Face opens up groove, and installs elastomeric pad in the groove.
In above-mentioned offshore oil drilling riser buoyance compensation device, further, the buoyancy stock material is used
The three-phase composite foam of resin, cenosphere and composite hollow ball system, the composite hollow ball are dispersed in resin and hollow micro-
In the two-phase composite foam that pearl is constituted, high density polyethylene (HDPE) shell is wrapped up outside the buoyant mass.
The utility model has the advantages and positive effects of:
1, the utility model has the advantages that durable, at low cost, is that standardized offshore oil drilling riser buoyance is mended
Repay device.
2, the diameter of the utility model notch is slightly larger than the diameter of subsidiary conduit, and the diameter of through-hole is straight slightly larger than pipeline
Diameter, to adapt to the case where pipe bending deforms；The cambered surface diameter of further buoyant mass inner surface is slightly larger than marine riser main pipeline
Diameter, to guarantee that buoyant mass is fixed on the correct position of marine riser main pipeline.
3, the utility model is equipped with chamfering in buoyant mass end face and the junction of buoyant mass periphery, avoids because of marine riser
Bending deformation and the stress raisers for causing end face.
4, be provided with cavity on the end face of the utility model buoyant mass, cavity to marine riser main pipeline and subsidiary conduit occur compared with
Large deformation slot milling avoids buoyant mass from being destroyed because of marine riser main pipeline and subsidiary conduit overbending.
5, the utility model buoyant mass inner cylinder face opens up groove, and installs elastomeric pad in the groove, uses double end
During bolt fastens buoyant mass, flexible deformation occurs for gasket, is deformed and is compressed by the elastomeric pad in buoyant mass
Marine riser, effectively prevents buoyant mass and marine riser directly contacts, and buoyant mass is destroyed caused by preventing because of marine riser bending deformation.
Detailed description of the invention
The technical solution of the utility model is described in further detail below with reference to drawings and examples, still
It should be known that these attached drawings are designed for task of explanation, therefore not as the restriction of the scope of the utility model.In addition,
Unless otherwise indicated, these attached drawings are meant only to conceptually illustrate structure construction described herein, without to carry out to scale
It draws.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the scheme of installation of the utility model.
In figure:
1, buoyant mass, 2, marine riser main pipeline, 3, cambered surface, 4, subsidiary conduit, 5, notch, 6, plane notch, 7, double end spiral shell
Bolt, 8, semicircular notch, 9, through-hole, 10, chokes pipeline, 11 kill-job pipelines, 12, gap, 13, chamfering, 14, cavity, 15, recessed
Slot, 16, elastomeric pad.
Specific embodiment
Firstly, it is necessary to which explanation, illustrates the offshore oil drilling of the utility model for by way of example below
Specific structure, features and advantages of riser buoyance compensation device etc., however what all descriptions were intended merely to be illustrated, and
It should not be construed as forming any restrictions to the utility model.In addition, be described by each embodiment mentioned by this paper or
Implicit any single technical characteristic, or shown or implicit any single technical characteristic in the drawings, still can be
Continue any combination between these technical characteristics (or its equivalent) or deletes, it may be not direct herein to obtain
More other embodiments of the utility model referred to.In addition, for the sake of simplifying drawing, same or like technical characteristic
It may only be indicated at one in the same figure.
It will be understood that when component ' attach ' to another component when it is said that, it can be directly connected to another component or
There may be intermediate members.On the contrary, when component " being directly connected to " being arrived another component when it is said that, then it represents that middle part is not present
Part.
Fig. 1 gives the structural schematic diagram of the utility model, and is illustrated by the installation that Fig. 2 gives the utility model
Figure, below just illustrate the utility model in conjunction with Fig. 1 to Fig. 2.
For the utility model content, feature and effect that can further appreciate that the utility model, the following examples are hereby given, and
It is described in detail with the accompanying drawings as follows:
A kind of offshore oil drilling riser buoyance compensation device, the offshore oil drilling riser buoyance compensation device
Including the buoyant mass 1 axially extending along marine riser, 1 inner surface of buoyant mass is provided with the arc matched with marine riser main pipeline 2
Face 3,1 inner surface of buoyant mass are provided with the notch 5 axially extended matched with subsidiary conduit 4.
The utility model has the advantages that durable, at low cost, is the compensation of standardized offshore oil drilling riser buoyance
Device.
For further, it can also consider in the present invention, the quantity of the buoyant mass 1 is two, described floating
1 outer surface of power block is provided with plane notch 6, and two buoyant mass 1 are tightened together by stud 7, the stud 7
It is passed through out of described plane notch 6.
It should be pointed out that opening in plane between described 1 the inner surface and the outer surface of buoyant mass, there are two along marine riser axis
To the semicircular notch 8 of extension, the opposite semicircular notch 8 of two of two buoyant mass 1 combines composition for pipe
The through-hole 9 that road passes through.
It should be pointed out that the diameter of the notch 5 is slightly larger than the diameter of subsidiary conduit 4, the diameter of the through-hole 9 is bigger
In the diameter of the pipeline.
It should be pointed out that 3 diameter of cambered surface of 1 inner surface of buoyant mass is slightly larger than 2 diameter of marine riser main pipeline.
The diameter of the utility model notch 5 is slightly larger than the diameter of subsidiary conduit 4, and the diameter of through-hole 9 is straight slightly larger than pipeline
Diameter, to adapt to the case where pipe bending deforms；3 diameter of cambered surface of 1 inner surface of further buoyant mass is responsible for slightly larger than marine riser
2 diameter of road, to guarantee that buoyant mass 1 is fixed on the correct position of marine riser main pipeline 2.
It should be pointed out that between two buoyant mass 1, there are gaps 12.
For further, it can also consider in the present invention, 1 end face of buoyant mass and the buoyant mass 1 circle
The junction of circumferential surface is equipped with chamfering 13.
The utility model is equipped with chamfering 13 in 1 end face of buoyant mass and the junction of 1 periphery of buoyant mass, avoids because of water proof
Pipe bending deformation and the stress raisers for causing end face.
For further, it can also consider in the present invention, be provided with cavity 14 on the end face of the buoyant mass 1,
14 profile cambered surface of cavity, 3 shape is consistent with 3 shape of internal pipeline cambered surface, is connected between cambered surface 3 by plane, the cavity 14
Overall size is greater than the size of 1 inner surface notch 5 of buoyant mass and cambered surface 3.
Cavity 14 is provided on the end face of the utility model buoyant mass 1, cavity 14 gives marine riser main pipeline 2 and subsidiary conduit 4
Moderate finite deformation slot milling occurs, buoyant mass 1 is avoided to be destroyed because of marine riser main pipeline 2 and 4 overbending of subsidiary conduit.
For further, it can also consider in the present invention, open up groove in 1 inner cylinder face of buoyant mass
15, and elastomeric pad 16 is installed in the groove 15.
1 inner cylinder face of the utility model buoyant mass opens up groove 15, and elastomeric pad 16 is installed in the groove 15, uses
During stud 7 fastens buoyant mass 1, flexible deformation occurs for gasket, passes through the elastomeric pad 16 in buoyant mass 1
Deformation compresses marine riser, effectively prevents buoyant mass 1 and marine riser directly contacts, buoyancy caused by preventing because of marine riser bending deformation
Block 1 is destroyed.
For further, it can also consider in the present invention, 1 material of buoyant mass is using resin, hollow micro-
The three-phase composite foam of pearl and composite hollow ball system, the composite hollow ball are dispersed in the two-phase that resin and cenosphere are constituted
In composite foam, high density polyethylene (HDPE) shell is wrapped up outside the buoyant mass 1.
As an example, in the present embodiment, the buoyant mass 1 of semi-cylindrical as shown in the accompanying drawings 1 has hard
High density polyethylene (HDPE) shell, inside are filled with buoyant material core material, and material is three-phase composite foam, it is answered by a series of low-density
Hollow sphere is closed to be dispersed among two-phase composite foam and form.Composite hollow ball has different sizes (Φ 2.5cm- Φ 15cm),
Tightly packed to realize, density range is 0.15-0.45g/cm3, material is phenolic resin, one in polyester or epoxy resin
Kind, it can be used or do not use glass fiber reinforcement, hollow ball inside can be hollow or filled polystyrene foam, polyphenyl
Vinyl foam density is 0.039g/cm3.Two-phase composite foam is made of resin and cenosphere, and resin is epoxy resin, gathers
One of ester, urethanes, phenolic resin, it is also necessary to a large amount of cenospheres be added with lightening material density, partial size exists
Between 5-500 μm, useful ceramics, glass or polymer manufacture cenosphere.This patent uses silicon boron glass microballon and thermosetting property
Epoxy resin.Plastic shell has uniformly completely been wrapped in core material outer surface.End face and outer surface junction are made into the conical surface, prevent
Only stress is concentrated.Cavity 14 is provided on end face, main function is that buoyant mass 1 is avoided to be destroyed because of pipeline overbending.In notch 5
Elastomeric pad 16 is installed, during being fastened with stud 7 to buoyant mass 1, flexible deformation occurs for gasket, compresses water proof
Pipe.1 inside cambered surface 3 of buoyant mass and marine riser main pipeline 2 match, and cambered surface 3 and subsidiary conduit 4 match.
As an example, in the present embodiment, it is made of two buoyant mass 1, is tightened together by stud 7.In buoyancy
Chamfering 13 is designed in 1 outer surface of block and end face junction, and stress is avoided to concentrate.There is cavity 14 in endface, and main function is to avoid floating
Power block 1 is destroyed because of pipeline overbending.The cambered surface 3 of 1 inner surface of buoyant mass, diameter are slightly larger than water proof pipe diameter, guarantee buoyancy
Block 1 is fixed on the correct position of marine riser, and also there are gaps 12 between two buoyant mass 1.Inner surface, which has, to be axially extended
Notch 5 and subsidiary conduit 4 match, and two opposite semicircular notch 8 combine the through-hole 9 and chokes pipeline of composition
10 match with kill-job pipeline 11.Two end faces and be equipped with plug hole.The moulding process of this material are as follows: high density polyethylene (HDPE)
Shell is made of roll moulding shaping technology first, and composite hollow ball (Φ 2.5cm- Φ 15cm) is tightly packed in the outer of given shape
Among shell, shell is pumped by plug hole using epoxy resin and hollow glass micropearl as the composite foam slurry of main component
Interior, composite foam slurry forms high-intensitive buoyant material after solidifying, after the completion of pumping, plug hole is closed.Lightweight shell exists
There is promotion in terms of material performance index and manufacture efficiency, and shell is not susceptible to destroy in transport and installation process.
In conclusion the utility model can provide, one kind is durable, and at low cost, standardized offshore oil drilling marine riser is floating
Force compensating device.
The utility model is described in detail in above embodiments, but the content is only the preferable reality of the utility model
Example is applied, should not be considered as limiting the scope of the present invention.Equalization made according to the scope of application of this utility model
Variation and improvement etc., should still belong within the patent covering scope of the utility model.
Claims (9)
1. a kind of offshore oil drilling riser buoyance compensation device, it is characterised in that: the offshore oil drilling marine riser is floating
Force compensating device includes the buoyant mass axially extending along marine riser, and marine riser includes marine riser main pipeline and subsidiary conduit, described
Buoyant mass inner surface is provided with the cambered surface matched with marine riser main pipeline, and the buoyant mass inner surface is provided with to match with subsidiary conduit
The notch axially extended closed.
2. offshore oil drilling riser buoyance compensation device according to claim 1, it is characterised in that: the buoyant mass
Quantity be two, the buoyant mass outer surface is provided with plane notch, and two buoyant mass are fastened on one by stud
It rises, the stud is passed through out of described plane notch.
3. offshore oil drilling riser buoyance compensation device according to claim 2, it is characterised in that: in the buoyancy
The semicircular notch axially extending along marine riser there are two being opened in plane between block the inner surface and the outer surface, two buoyant mass
Two opposite semicircular notch combine and constitute the through-hole that passes through for pipeline.
4. offshore oil drilling riser buoyance compensation device according to claim 3, it is characterised in that: the notch
Diameter is greater than the diameter of subsidiary conduit, and the diameter of the through-hole is greater than the diameter of the pipeline.
5. offshore oil drilling riser buoyance compensation device according to claim 3, it is characterised in that: the buoyant mass
The cambered surface diameter of inner surface is greater than marine riser main pipeline diameter.
6. offshore oil drilling riser buoyance compensation device according to claim 2, it is characterised in that: two described floating
There are gaps between power block.
7. offshore oil drilling riser buoyance compensation device according to claim 1, it is characterised in that: the buoyant mass
End face and the junction of the buoyant mass periphery are equipped with chamfering.
8. offshore oil drilling riser buoyance compensation device according to claim 1, it is characterised in that: the buoyant mass
End face on be provided with cavity, the profile arc shape of the cavity is consistent with the arc shape of pipeline inside the buoyant mass,
It is connected between cambered surface by plane, the cavity overall size is greater than the size of buoyant mass inner surface notch and cambered surface.
9. offshore oil drilling riser buoyance compensation device according to claim 1, it is characterised in that: in the buoyancy
Block inner cylinder face opens up groove, and installs elastomeric pad in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820734329.4U CN208564465U (en) | 2018-05-17 | 2018-05-17 | A kind of offshore oil drilling riser buoyance compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820734329.4U CN208564465U (en) | 2018-05-17 | 2018-05-17 | A kind of offshore oil drilling riser buoyance compensation device |
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| CN208564465U true CN208564465U (en) | 2019-03-01 |
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| CN201820734329.4U Active CN208564465U (en) | 2018-05-17 | 2018-05-17 | A kind of offshore oil drilling riser buoyance compensation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294098A (en) * | 2021-04-25 | 2021-08-24 | 四川宏华石油设备有限公司 | Connecting device and assembling method of marine drilling riser and riser structure |
-
2018
- 2018-05-17 CN CN201820734329.4U patent/CN208564465U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294098A (en) * | 2021-04-25 | 2021-08-24 | 四川宏华石油设备有限公司 | Connecting device and assembling method of marine drilling riser and riser structure |
| CN113294098B (en) * | 2021-04-25 | 2022-03-22 | 四川宏华石油设备有限公司 | Connecting device and assembling method of marine drilling riser and riser structure |
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