CN205841999U - A kind of submarine landslide district oil and gas pipes with new type section - Google Patents
A kind of submarine landslide district oil and gas pipes with new type section Download PDFInfo
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- CN205841999U CN205841999U CN201620370727.3U CN201620370727U CN205841999U CN 205841999 U CN205841999 U CN 205841999U CN 201620370727 U CN201620370727 U CN 201620370727U CN 205841999 U CN205841999 U CN 205841999U
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Abstract
This utility model belongs to sea-bottom oil-gas pipeline production technical field, relate to a kind of submarine landslide district oil and gas pipes with new type section, this oil and gas pipes is made up of steel pipe layer, fusion bonded epoxy coating, polyurethane foam layer, polyethylene layer and concrete layer the most successively, and the cross section of concrete layer is the hexagon with arc drift angle of hollow；The cross section of oil and gas pipes is the hexagon with arc drift angle；The sectional area of steel pipe layer is identical with circular pipe in current engineering.This utility model can reduce drag force and the vertical vibratory forces that submarine landslide impulse piping produces largely, and duct bottom is relatively big with sea bed contact area, increases frictional resistance, effectively improves submarine pipeline stability and safe life；Additionally, this utility model does not affect the oil in current engineering, gas conveying capacity, the production technology of pipeline is also without extensive change, it is simple to promote and actual application.
Description
Technical field
This utility model belongs to sea-bottom oil-gas pipeline production technical field, relates to a kind of seabed with new type section and slides
Slope district oil and gas pipes.
Background technology
Sea-bottom oil-gas pipeline as a kind of from marine mining platform landwards transfer oil, the carrier of natural gas, due to it
The advantages such as conveying is continuous, big, the convenient management of conveying capacity, are widely applied in ocean engineering.And submarine landslide is ocean
One of geological disaster that oil gas engineering is the most dangerous, shows as bottom sediment and local occurs or slides on a large scale, has generation frequency
The features such as numerous, volume is big, speed is fast, actual relative movement length, the fastest up to 30m/s, can produce powerful after contacting with sea-bottom oil-gas pipeline
Impulsive force, directly affects the stability and security of submarine pipeline, even causes the catastrophic failures such as pipeline break, bring great economy
Loss.
Currently, the Practical Project of Marine oil and gas resource exploitation typically chooses circular pipe, in submarine landslide disaster effect
The drag force of lower generation is relatively big, and meanwhile, pipeline vertical direction is affected by wake flow can produce vertical vibratory forces, and these all can
Submarine pipeline is played serious destruction.Additionally, it is less with sea bed contact area, accordingly bottom circular pipe during tiling
Frictional resistance is relatively low, is unfavorable for the stability and security of submarine pipeline.
Utility model content
In order to overcome circular pipe drag force, vertical vibratory forces under the disaster effect of submarine landslide relatively big and bottom
The deficiency that frictional resistance is too small, this utility model provides a kind of submarine landslide district oil and gas pipes with new type section, this oil gas
Pipeline is applicable to Yi Fa district, submarine landslide.
In order to achieve the above object, the technical solution of the utility model is:
A kind of submarine landslide district oil and gas pipes with new type section, this oil and gas pipes includes steel pipe layer the most successively
1, fusion bonded epoxy coating 2, polyurethane foam layer 3, polyethylene layer 4 and fairshaped concrete layer 5, penetralia is steel pipe layer
1；The cross section of described concrete layer 5 is the hexagon with arc drift angle of hollow；The cross section of oil and gas pipes is for having arc
The hexagon of drift angle.Steel pipe layer 1 surface coating fusion bonded epoxy corrosion-inhibiting coating 2, epoxy anticorrosive coating 2 surface spraying polyurethane foam
Plastic, thermal-insulation layer 3, polyurethane foam plastics heat-insulation layer 3 surface coating polyethylene anticorrosive coating 4, polyethylene anticorrosive coating 4 surface pours
Concrete layer 5.Each layer thickness requires to determine according to specific design.The sectional area of described steel pipe layer 1 is circular with current engineering
Pipeline is identical, with guarantee oil, natural gas conveying capacity consistent with current engineering specification, meet normal supply needs.
Landslide disaster occurs near submarine pipeline, and when slip mass acts on submarine pipeline, fairshaped cross sectional shape can
To reduce drag force and vertical vibratory forces largely；On the other hand, than circular cross-section, hexagonal cross-sectional shape pipe
Road is bigger with the contact area of sea bed, increases frictional resistance, can effectively weaken the percussion of submarine landslide；And face, cross section
Long-pending identical with current circular pipe, with guarantee oil, natural gas conveying capacity consistent with current engineering specification, satisfied normally confession
Give and need.
The beneficial effects of the utility model: this utility model can reduce submarine landslide impulse piping largely and produce
Drag force and vertical vibratory forces, and duct bottom and sea bed contact area are relatively big, increase bottom friction resistance, effectively
Improve submarine pipeline stability and safe life.Additionally, this utility model does not affect the oil in current engineering, gas conveying capacity, pipe
The production technology in road is also without extensive change, it is simple to promote and actual application.
Accompanying drawing explanation
Fig. 1 is normal axomometric drawing of the present utility model
Fig. 2 is sectional view of the present utility model.
In figure: 1 steel pipe layer；2 fusion bonded epoxy coatings；3 polyurethane foam layers；4 polyethylene layers；5 concrete layers.
Detailed description of the invention
Below in conjunction with describing detailed description of the invention of the present utility model in detail with accompanying drawing.
In fig. 1 and 2, a kind of submarine landslide district oil and gas pipes with new type section of this utility model, oil and gas pipes
It is made up of five parts: be followed successively by steel pipe layer 1, fusion bonded epoxy coating 2, polyurethane foam layer 3, polyethylene layer from inside to outside
4 and concrete layer 5.Concrete layer 5 is designed to streamlined；Pipeline section is the hexagon with arc drift angle.Steel pipe layer 1 surface
Coating fusion bonded epoxy corrosion-inhibiting coating 2, epoxy anticorrosive coating 2 surface spraying polyurethane foam plastics heat-insulation layer 3, polyurethane foam is moulded
Material heat-insulation layer 3 surface coating polyethylene anticorrosive coating 4, polyethylene anticorrosive coating 4 surface casting concrete layer 5 becomes and has arc drift angle
Hexagon.Each layer thickness requires to determine according to specific design.In Fig. 2, the area of section of steel pipe layer is circular with current engineering
Pipeline is identical, with guarantee oil, natural gas conveying capacity consistent with current engineering specification, meet normal supply needs.
Claims (1)
1. a submarine landslide district oil and gas pipes with new type section, it is characterised in that this submarine landslide district oil and gas pipes is
Inside is steel pipe layer (1), steel pipe layer (1) surface coating fusion bonded epoxy corrosion-inhibiting coating (2), epoxy anticorrosive coating (2) surface spraying
Polyurethane foam plastics heat-insulation layer (3), polyurethane foam plastics heat-insulation layer (3) surface coating polyethylene anticorrosive coating (4), polyethylene
Anticorrosive coat (4) surface casting concrete layer (5)；The cross section of described submarine landslide district oil and gas pipes is six with arc drift angle
Limit shape；The hexagon with arc drift angle that cross section is hollow of described concrete layer (5)；Cutting of described steel pipe layer (1)
Area is identical with circular pipe in current engineering, with guarantee oil, natural gas conveying capacity consistent with current engineering specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620370727.3U CN205841999U (en) | 2016-04-27 | 2016-04-27 | A kind of submarine landslide district oil and gas pipes with new type section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620370727.3U CN205841999U (en) | 2016-04-27 | 2016-04-27 | A kind of submarine landslide district oil and gas pipes with new type section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205841999U true CN205841999U (en) | 2016-12-28 |
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ID=57627693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620370727.3U Active CN205841999U (en) | 2016-04-27 | 2016-04-27 | A kind of submarine landslide district oil and gas pipes with new type section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205841999U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091379A (en) * | 2017-06-27 | 2017-08-25 | 大连理工大学 | A kind of streamlined energy conduit of mitigation submarine landslide impact |
| CN107676551A (en) * | 2017-09-22 | 2018-02-09 | 中国石油大学(北京) | A kind of fine multiple material concrete steel double-walled combination sea-bottom oil-gas delivery pipe of New Type of Carbon |
| CN111210502A (en) * | 2019-11-25 | 2020-05-29 | 温州大学 | Computer method for predicting vertical impact force of landslide on submarine pipeline |
| CN117077496A (en) * | 2023-10-16 | 2023-11-17 | 西南石油大学 | Safety evaluation method for pipeline containing corrosion defects under landslide effect |
-
2016
- 2016-04-27 CN CN201620370727.3U patent/CN205841999U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091379A (en) * | 2017-06-27 | 2017-08-25 | 大连理工大学 | A kind of streamlined energy conduit of mitigation submarine landslide impact |
| CN107676551A (en) * | 2017-09-22 | 2018-02-09 | 中国石油大学(北京) | A kind of fine multiple material concrete steel double-walled combination sea-bottom oil-gas delivery pipe of New Type of Carbon |
| CN111210502A (en) * | 2019-11-25 | 2020-05-29 | 温州大学 | Computer method for predicting vertical impact force of landslide on submarine pipeline |
| CN111210502B (en) * | 2019-11-25 | 2023-11-07 | 温州大学 | Calculation method for predicting vertical impact acting force of landslide suffered by submarine pipeline |
| CN117077496A (en) * | 2023-10-16 | 2023-11-17 | 西南石油大学 | Safety evaluation method for pipeline containing corrosion defects under landslide effect |
| CN117077496B (en) * | 2023-10-16 | 2024-01-23 | 西南石油大学 | Safety evaluation method for pipeline containing corrosion defects under landslide effect |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |