CN205638254U - Be used for underwater expandable formula riser pipe - Google Patents
Be used for underwater expandable formula riser pipe Download PDFInfo
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- CN205638254U CN205638254U CN201620438382.0U CN201620438382U CN205638254U CN 205638254 U CN205638254 U CN 205638254U CN 201620438382 U CN201620438382 U CN 201620438382U CN 205638254 U CN205638254 U CN 205638254U
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- riser pipe
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- catheter body
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Abstract
The utility model provides a be used for underwater expandable formula riser pipe, be used for underwater expandable formula riser pipe includes: the pipe body, the cover is established chance water inflation layer outside the pipe body. Show the bearing capacity who has improved the riser pipe under the condition of going into the degree of depth under riser pipe size or the riser pipe not increasing, guaranteeing the stability of marine brill well completion well head. The utility model discloses do not change the construction flow of conventional riser pipe at the site operation in -process, can use the construction equipment and the equipment of conventional riser pipe, realize that the construction method routinizes, make things convenient for site operations. The utility model discloses but the wide application is in various marine resource exploration and development fields.
Description
Technical field
This utility model relates to commonly used equipment and product in marine resources exploration, is applied to especially with regard to one
Exploratory engineering of off-shore petroleum/gas reservoir development process is drilled well shaft use riser pipe equipment, a kind of for inflatable under water every
Water conduit.
Background technology
Riser pipe is that it is offshore drilling and production of hydrocarbons to one layer of pipe in sea-bottom shallow ground from offshore platform
First critical point.Its major function is insulating sea water, forms circulation of drilling fluid and the passage of production of hydrocarbons, simultaneously as sea
The holding force structure of well head.During being drilled well operations and production of hydrocarbons, the driving depth of riser pipe and stability are for sea
On be drilled well operations and production safety is most important.
At sea during oil gas drilling, riser pipe is as well head holding force structure well head to be born load (preventer, well head
Head, production tree) and the load such as inner sleeve weight.These load that riser pipe is born are intended to by riser pipe appearance
Frictional force between area and seafloor soil provides support, so the load that riser pipe bears needs exist for the most greatly sufficiently large
Riser pipe external surface area, conventional method is the most only by increasing riser pipe outside dimension or increasing riser pipe in seabed
Driving depth in soil realizes.If single from the method increasing riser pipe outside dimension, riser pipe weight can be increased
Amount, thus can adds additional and be drilled well engineering cost.If it is single from the method increasing riser pipe driving depth,
So can increase riser pipe usage amount, and then adds additional and be drilled well engineering cost.
In sum, prior art there is problems in that existing riser pipe, the bearing capacity meeting of riser pipe to be improved
Increase and be drilled well engineering cost.
Utility model content
This utility model provides a kind of for inflatable riser pipe under water, to solve existing riser pipe, improve
The bearing capacity of riser pipe can increase the problem being drilled well engineering cost.
To this end, the utility model proposes a kind of for inflatable riser pipe under water, described for inflatable under water
Riser pipe includes:
Catheter body；
It is set in the water-swellable layer outside described catheter body.
Further, outside described water-swellable layer is set in described catheter body by bonding.
Further, the thickness of described water-swellable layer is less than the 20% of catheter body diameter.
Further, the thickness of described water-swellable layer is less than the 10% of catheter body diameter.
Further, within the expansion rate of described water-swellable layer is 3 times.
Further, described catheter body external diameter is 30 inches, and before meeting water, the thickness of described water-swellable layer is 1 inch,
After meeting water, the thickness of described water-swellable layer is 3 inches.
Further, described catheter body external diameter is 20 inches, and before meeting water, the thickness of described water-swellable layer is 1 inch,
After meeting water, the thickness of described water-swellable layer is 3 inches.
Further, a length of 1 meter to 20 meters of single described catheter body.
Further, the connected mode between single described catheter body is: screwed connection mode, joint connection manner or weldering
Connect connected mode.
Further, the material of described water-swellable layer is expanded rubber or expansion plastic.
After riser pipe is lowered into the bottom or submarine soil layer, the water-swellable layer of riser pipe necessarily postpones running into aqueous medium
After time, automatically expand, it is achieved increase riser pipe outside dimension effect, under not increasing riser pipe depth profile
Improve riser pipe bearing capacity.
Owing to taking above technical scheme, this utility model has the advantage that
1, the inflatable riser pipe that this utility model uses, is not increasing riser pipe size or riser pipe depth of setting
In the case of significantly improve the bearing capacity of riser pipe, it is ensured that sea is drilled the stability of well well head.
2, the inflatable riser pipe that this utility model uses, does not change executing of conventional riser pipe at the scene in work progress
Work flow process, can use construction equipment and the equipment of conventional riser pipe, it is achieved construction method routinizes, and facilitates field operation.
3, the inflatable riser pipe that this utility model uses, is providing under same holding power premise for well head, with commonly every
Water conduit is compared, and can save riser pipe weight and reach more than 30%, thus save sea and be drilled well engineering cost.
This utility model can be widely applied in various marine resources exploration field.
Accompanying drawing explanation
Fig. 1 is the structural representation for inflatable riser pipe under water of the present utility model；
Fig. 2 is the scheme of installation for inflatable riser pipe under water of the present utility model.
Drawing reference numeral illustrates:
1 catheter body 2 water-swellable layer 3 duct cavity 5 submarine soil layer 6 subsea equipment 7 marine riser 8 sea 9
Mud line 10 is for inflatable riser pipe under water
Detailed description of the invention
In order to be more clearly understood from technical characteristic of the present utility model, purpose and effect, now comparison accompanying drawing illustrates this reality
With novel.
Including for inflatable riser pipe 10 under water according to this utility model embodiment as shown in Figure 1: conduit is originally
Body 1 and the water-swellable layer 2 outside being set in described catheter body.Catheter body 1 has duct cavity 3 or conduit annular space.
During use, after riser pipe 10 is lowered into the bottom or submarine soil layer 5, the water-swellable layer 2 of riser pipe is running into water Jie
After matter certain time delay, automatically expand, it is achieved increase riser pipe outside dimension effect, do not increasing riser pipe
Riser pipe bearing capacity is improve under depth profile.Compared with common surface conductor pipe, the inflatable water proof under water is led
Catheter body 1 internal diameter size of pipe 10 is constant, and surface conductor pipe wall thickness (i.e. catheter body 1 wall thickness) can suitably reduce (
The 50% of common wall thickness can be reduced to greatly), it is achieved reduce the effect of this body weight of surface conductor pipe, save riser pipe engineering cost.
Further, described water-swellable layer 2 is set in outside described catheter body 1 by bonding, in such manner, it is possible to adapt to
The needs of water-swellable under water, and connect easy to make.Wherein, water-swellable layer 2 have reasonable adhesion strength and
Tensile property, in order to be firmly bonded with catheter body 1, and the frictional force between seafloor soil 5 can be born.
Further, within the expansion rate of described water-swellable layer is 3 times, i.e. radial direction after water-swellable layer 2 water-swellable
Within size is radial dimension of 3 times before meeting water, to obtain expansion effect the most under water.
Further, the thickness of described water-swellable layer 2 is less than the 20% of catheter body 1 diameter, and main purpose is convenient
Construction is entered under surface conductor pipe (or catheter body, or riser pipe 10).The riser pipe 10 of this ratio and structure, is suitable for
In drilling for deep water hydrocarbon.
Further, described catheter body 1 external diameter for example, 30 inches (76.2cm), before meeting water, described water-swellable layer
Thickness be 1 inch (2.54cm), meet after water, the thickness of described water-swellable layer is 3 inches (7.62cm), i.e. expands
Rear surface conductor pipe external diameter is up to 36 inches (91.44cm).This is suitably sized to drill for deep water hydrocarbon, it is possible to reduce table
The effect of layer catheter body weight, saves surface conductor pipe engineering cost.
Further, the thickness of described water-swellable layer 2 is less than the 10% of catheter body diameter 1.This ratio and structure
Riser pipe 10, be adapted for use in shallow water oil gas drilling, facilitate surface conductor pipe (or catheter body, or riser pipe 10)
Under enter construction.
Further, described catheter body 1 external diameter for example, 20 inches (50.8cm), before meeting water, described water-swellable layer
Thickness be 1 in2 .54cm), meet after water, the thickness of described water-swellable layer is 3 inches (7.62cm), after i.e. expanding
Surface conductor pipe external diameter is up to 26 inches (66.04cm).This is suitably sized to for shallow water oil gas drilling, it is possible to reduce top layer
The effect of catheter body weight, saves surface conductor pipe engineering cost.
Further, a length of 1 meter to 20 meters of single described catheter body.For inflatable riser pipe under water
The 10 visual site operations of length require to make the joint length in the range of 1 meter to 20 meters.Multiple single being used under water
Inflatable riser pipe 10 couple together formed whole for inflatable riser pipe under water, in other words, whole
Using split type making or split-type structural for inflatable riser pipe under water, whole is used for inflatable under water
Riser pipe is formed by single connecting for inflatable riser pipe 10 under water or inflatable riser pipe unit.This
Sample, it is simple to make, it is simple under enter in water.
Further, the connected mode between single described catheter body 10 is: screwed connection mode, joint connection manner
Or snap joint connected mode or welding connecting mode, in order to form stable connection.Such as, as it is shown in figure 1, conduit
The top of body 1 is exposed outside water-swellable layer 2, in order to processing screw thread or screw thread, or processing, jointing or welding.
Further, the material of described water-swellable layer 2 is expanded rubber or expansion plastic, or expanding layer material is grouped
Point: rubber mass, cotton fiber, water-absorbing resin, white carbon, plasticizer, antiaging agent, accelerator.Rubber mass is fourth
Base rubber, nitrile rubber, weight content 42%, water-absorbing resin is sodium polyacrylate, weight content 31%, and plasticizer is not
Satisfied fatty acid zinc soap, weight content 8%, antiaging agent is methyl dihydrogenated quinoline polymer, weight content 5%, promotes
Agent is cyclohexylbenzothiazole sulfenamide, weight content 5%, other weight content 9%.These materials can run into water
After medium certain time delay, automatically expanding effect, the time expanded can be by these materials at interpolation
Reason agent adjusts, and typical time can be controlled in 4 hours to 12 hours.
As in figure 2 it is shown, be the surface conductor pipe (inflatable riser pipe 10) of band expanding material in seabed installation site order
Depth of setting scope is: the depth of setting of seabed mud line 9 to the surface conductor pipe design under sea or the water surface 8, and is positioned at
The common surface conductor pipe that seabed mud line 9 is used without expanding material with up to this length section of subsea equipment 6 is (the most common
Marine riser 7).As such, it is possible to save the cost of the surface conductor pipe of seabed mud line more than 9.
This utility model can be widely applied in various marine resources exploration field.This utility model can not increase every
The bearing capacity of riser pipe is greatly improved in the case of water conduit size or depth of setting.
The foregoing is only the schematic detailed description of the invention of this utility model, be not limited to scope of the present utility model.
Can be mutually combined under conditions of not conflicting for each ingredient of the present utility model, any those skilled in the art,
Without departing from equivalent variations done on the premise of design of the present utility model and principle and amendment, this utility model all should be belonged to
The scope of protection.
Claims (8)
1. the inflatable riser pipe being used under water, it is characterised in that described for inflatable under water
Riser pipe includes:
Catheter body；
It is set in the water-swellable layer outside described catheter body.
2. as claimed in claim 1 for inflatable riser pipe under water, it is characterised in that described chance water
Expanding layer is set in outside described catheter body by bonding.
3. as claimed in claim 1 for inflatable riser pipe under water, it is characterised in that described chance water
The thickness of expanding layer is less than the 20% of catheter body diameter.
4. as claimed in claim 1 for inflatable riser pipe under water, it is characterised in that described chance water
The thickness of expanding layer is less than the 10% of catheter body diameter.
5. as claimed in claim 1 for inflatable riser pipe under water, it is characterised in that described conduit
This body diameter is 30 inches, and before meeting water, the thickness of described water-swellable layer is 1 inch, after meeting water, and described chance water
The thickness of expanding layer is 3 inches.
6. as claimed in claim 1 for inflatable riser pipe under water, it is characterised in that described conduit
This body diameter is 20 inches, and before meeting water, the thickness of described water-swellable layer is 1 inch, after meeting water, and described chance water
The thickness of expanding layer is 3 inches.
7. as claimed in claim 1 for inflatable riser pipe under water, it is characterised in that single described
A length of 1 meter to 20 meters of catheter body.
8. as claimed in claim 7 for inflatable riser pipe under water, it is characterised in that single described
Connected mode between catheter body is: screwed connection mode, joint connection manner or welding connecting mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620438382.0U CN205638254U (en) | 2016-05-13 | 2016-05-13 | Be used for underwater expandable formula riser pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620438382.0U CN205638254U (en) | 2016-05-13 | 2016-05-13 | Be used for underwater expandable formula riser pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205638254U true CN205638254U (en) | 2016-10-12 |
Family
ID=57059084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620438382.0U Active CN205638254U (en) | 2016-05-13 | 2016-05-13 | Be used for underwater expandable formula riser pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN205638254U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909180A (en) * | 2016-05-13 | 2016-08-31 | 中国石油大学(北京) | Underwater inflatable water insulation duct |
| CN109441371A (en) * | 2018-11-26 | 2019-03-08 | 中国石油大学(北京) | Inner-rotary type conduit bearing capacity stiffening device and its application method |
-
2016
- 2016-05-13 CN CN201620438382.0U patent/CN205638254U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909180A (en) * | 2016-05-13 | 2016-08-31 | 中国石油大学(北京) | Underwater inflatable water insulation duct |
| WO2017193838A1 (en) * | 2016-05-13 | 2017-11-16 | 中国石油大学(北京) | Underwater expandable riser |
| CN105909180B (en) * | 2016-05-13 | 2019-05-28 | 中国石油大学(北京) | For underwater inflatable riser pipe |
| CN109441371A (en) * | 2018-11-26 | 2019-03-08 | 中国石油大学(北京) | Inner-rotary type conduit bearing capacity stiffening device and its application method |
| CN109441371B (en) * | 2018-11-26 | 2023-12-08 | 中国石油大学(北京) | Internal rotation type catheter bearing capacity reinforcing device and application method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |