CN108007792A - In-service deep seafloor buried pipeline earthquake-high pressure load combination loading test method - Google Patents
In-service deep seafloor buried pipeline earthquake-high pressure load combination loading test method Download PDFInfo
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- CN108007792A CN108007792A CN201711129432.2A CN201711129432A CN108007792A CN 108007792 A CN108007792 A CN 108007792A CN 201711129432 A CN201711129432 A CN 201711129432A CN 108007792 A CN108007792 A CN 108007792A
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- high temperature
- temperature oil
- nacelle
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- pipeclay
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
- G01N2203/0232—High pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
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- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of in-service deep seafloor buried pipeline earthquake high pressure load combination loading test method, used device includes nacelle, and nacelle includes nacelle main body (4) and hatchcover (3)；Experiment pipe fitting (30) is located at nacelle body interior, front end is connected with high temperature oil input hard tube (24), it penetrates pipe fitting front end flange (23) respectively, after front end flange rubber interlayer (22), front end connecting flange (21) and nacelle front end flange (20), it is connected with the high temperature oil input hole (17) on hatchcover；There is pipeclay pressurized strut (26) in the external stability of experiment pipe fitting (30), which is provided with data cable punched out (29).Test method：Close osculum, using inlet opening to nacelle internal water flooding, treat that water filling finishes, stand certain time, after the soil body is saturated-water phase inside pipeclay pressurized strut, using external high temperature oil equipment, via high temperature oil input hole to experiment inside pipe fitting injection high temperature oil, and exported by high temperature oil delivery outlet to high temperature oil equipment.
Description
Technical field
The present invention provides a kind of in-service buried pipeline earthquake in deep-sea-high pressure combination loading experimental rig, using the device,
It can realize that buried pipeline is subject to the synergy of high pressure and seismic (seismal at the same time, can taken with approximate simulation seabed buried pipeline
Acted on during labour be subject to earthquake and submarine geological hazard, realize the security evaluation to in-service seabed buried pipeline.
Technical background
The core competitiveness of energy security and world economy is increasingly dependent on the utilize and exploitation journey to marine resources
On degree, China South Sea oil and gas reserves is huge, and is largely clean energy resource, and extraction value is huge.In recent years, China is led at deep-sea
Domain oil and gas development field achieves significant progress, and substantial amounts of experience is have accumulated in shallow sea field.But in deep-sea field, especially exist
China South Sea field, since its environment is complicated and changeable, and the more geological disasters in seabed so that oil-gas mining difficulty is lifted suddenly, is related to
And key core technology is urgently to be resolved hurrily.
Deep-sea petroleum pipeline is huge in deep-sea oil gas exploration project Investment portion, its design-build and correlation technique are deep-seas
The key of petrol resources exploitation.Lifeline of the petroleum pipeline as Marine oil and gas resource, its safe operation are deep-sea oil gas resources
The important leverage being utilized effectively.To ensure the On-bottom stability of pipe-line, big multipair oil gas is defeated in practice for engineering
Send pipeline to take embedded processing, its during operation can be subject in high pressure, high temperature stream and seismic (seismal be acted on, and the South Sea by
In its special geographical location and geological conditions so that seismic (seismal becomes the major control load of buried pipeline, all depths
Extra large pipe-line has to pass through dynamic load accounting and verification experimental verification, but due to its special buried environment, is needed during experiment
To apply high pressure-dynamic load connected load at the same time, while take into account pipeclay coupling, be educational circles's problem all the time.
Lot of research both domestic and external all shows that, by correlation principles such as ratio approximations, contracting can make than ruler result of the test
For the normative reference of actual design.Now both at home and abroad in shortcoming present on deep-sea oil gas pipeline combined loading test method
Mainly have：
1. in terms of ultimate load research, mostly carry out experiment by building special pressure equipment both at home and abroad, can simulate
External load it is single, the influence to submarine pipeline mechanical property of axial force or moment of flexure mainly under hydraulic pressure effect, it is impossible to
Enough realize the local stability experiment under a variety of load synergy, and cannot consider that pipeclay coupling is mutual during experiment
Effect；
2. buried pipeline is as considered pipeclay coupling, apply seismic (seismal, domestic and international relevant device can only be
Carry out similar experiment under normal pressure or under shallow-water environment, it is impossible to simulate the high pressure load suffered by pipelines in deep sea；
3. domestic and international relevant apparatus can not be realized under the effect of high hydraulic pressure, while dynamic load(loading), into horizontal high voltage under depth
The dynamic test experiment of extra large pipe-line.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide can simulate in-service deep-sea buried pipeline earthquake-
The test method of high pressure combination loading.Invention introduces pipeclay coupling, stream acts in high temperature, exterior high hydraulic pressure and ground
Shake load, it is possible to achieve stream, exterior high hydraulic pressure and seismic (seismal combination loading in high temperature.Technical scheme is as follows：
A kind of in-service deep seafloor buried pipeline earthquake-high pressure load combination loading test method, used device bag
Nacelle is included, nacelle includes nacelle main body (4) and hatchcover (3)；
Nacelle is provided with some perforates, including data acquisition hole (6), pressurizes hole (7), the vertical application well that impulses (8), laterally
The application well that impulses (11), bottom opening (10), lateral perforate (13), inlet opening (14), osculum (15), high temperature oil input hole
(17) and high temperature oil delivery outlet (16)；The dress that impulses is installed in the vertical application well that impulses (8) and lateral application well (11) place that impulses
Put, for radially applying oscillating load to pipe fitting；
Experiment pipe fitting (30) is located at nacelle body interior, and front end is connected with high temperature oil input hard tube (24), it is penetrated respectively
Pipe fitting front end flange (23), via front end flange rubber interlayer (22), front end connecting flange (21) and nacelle front end flange (20)
Afterwards, it is connected with the high temperature oil input hole (17) on hatchcover；Rear end is equally connected with high temperature oil output hard tube (39), it penetrates pipe fitting
Flange at tail end (38), after flange at tail end rubber interlayer (37), tail end connecting flange (36) and nacelle flange at tail end (35), with
The high temperature oil delivery outlet (16) of nacelle rear end is connected；
Experiment pipe fitting (30) external stability have pipeclay pressurized strut (26), which is provided with data cable punched out (29) to
Ensure DATA REASONING line by while, can also ensure that high pressure water passes through；The internal both ends of pipeclay pressurized strut (26) are equipped with height
Rubber (25) is played, its cross section is annulus, and outer wall is contacted with pipeclay pressurized strut (26) inner wall, inner wall and experiment pipe fitting (30) outer wall
Contact, to ensure that the soil body is not scattered in experimentation；
Test procedure includes：After experiment pipe fitting and pipeclay pressurized strut are installed in place, lateral perforate and bottom opening point are utilized
Operating bar is not impulsed by vertical and the lateral operating bar that impulses is connected with vertical shock excitation device and lateral shock excitation device, seal respectively afterwards
Lateral perforate and bottom opening are closed, closes osculum, using inlet opening to nacelle internal water flooding, treats that water filling finishes, stands certain
Time, after the soil body is saturated-water phase inside the pipeclay pressurized strut, using external high temperature oil equipment, via high temperature oil input hole to
Inside pipe fitting injection high temperature oil is tested, and is exported by high temperature oil delivery outlet to high temperature oil equipment.
The present invention considers high pressure-seismic (seismal combination loading under pipeclay coupling, can realize contracting deep water more in-service than ruler
Apply stream -- earthquake -- high pressure connected load in high temperature under buried pipeline pipeclay coupling condition at the same time, simulate deep seafloor underground pipe
Road limit operation environment.It is of the invention to be had the following advantages compared with the domestic and international prior art：It can realize high pressure-oscillating load
Combination loading, pipeclay coupling interaction is realized using pipeclay pressurized strut, and can apply direction vibration load and high temperature oil at the same time
Compressive load, makes load working condition fitting actual as far as possible.
Brief description of the drawings
Fig. 1 high pressure nacelle front views
Figure label explanation：1-- hatchcovers locking device supports；2-- hatchcover locking devices；3-- hatchcovers；4-- nacelle main bodys；
5-- nacelles support；6-- data acquisitions hole；7-- pressurizations hole；The vertical application well that impulses of 8--；The vertical shock excitation devices of 9--；10-- bottoms
Portion's perforate；14-- water injection holes；15-- osculums；16-- high temperature oil delivery outlets；17-- high temperature oil input holes；18-- tail studs；
19-- tail stud fixing nuts.
Fig. 2 high pressure nacelle top views
Figure label explanation：2-hatchcover locking device；3-hatchcover；4-nacelle main body；6-data acquisition hole；7-add
Press hole；8-vertical shock excitation device；11-- laterally impulses application well；12-lateral shock excitation device；The lateral perforates of 13--；14-- is noted
Water hole；16-high temperature oil delivery outlet；17-high temperature oil input hole.
Fig. 3 pipeclay pressurized strut schematic diagrames
Figure label explanation：20-- nacelle front end flanges；21-front end connecting flange；22-- front end flange rubber interlayers；
23-- pipe fitting front end flanges；24-- high temperature oils input hard tube；25-- elastomers；26-- pipeclay pressurized struts；27-- inside pipe fittings
High temperature conveying oil；The 28-- soil bodys；29-- data cable punched out；30-- tests pipe fitting；The vertical operating bars that impulse of 31--；32-- is vertical
Impulse operating bar；The spherical link slots of 33--；34-- impulses loaded ring；35-- nacelle flange at tail end；36-- tail end connecting flanges；
37-- flange at tail end rubber interlayers；38-- pipe fitting flange at tail end；39-- high temperature oils export hard tube；40-- laterally impulses operating bar；
41-- laterally impulses operating bar；The spherical link slots of 42--.
Fig. 4 Section A-A schematic diagrames
Figure label explanation：26-- pipeclay pressurized struts；27-- inside pipe fittings high temperature conveying oil；The 28-- soil bodys；29-- data
Line punched out；30-- tests pipe fitting；The vertical operating bars that impulse of 31--；The vertical operating bars that impulse of 32--；The spherical link slots of 33--；
34-- impulses loaded ring；40-laterally impulse operating bar；41-- laterally impulses operating bar；The spherical link slots of 42--.
Embodiment：
Below in conjunction with the accompanying drawings, the embodiment of the present invention is described further：
As depicted in figs. 1 and 2, closed hyperbaric environment is formed using deepwater high-pressure chamber device, the equipment is mainly by nacelle
Main body 4, hatchcover 3 and its locking device 2 form.Whole nacelle by the support of saddle 5 by being fixed on ground, end cap 3 and its locking
Device 2 is supported by hatchcover locking device support 1 and is fixed on ground.Some perforates are provided with cylinder main body, including data are adopted
Collect hole 6, hole 7 of pressurizeing, the vertical application well 8 that impulses, bottom opening 10, the application well that laterally impulses 11, lateral perforate 13, inlet opening
14, osculum 15, high temperature oil delivery outlet 16, high temperature oil input hole 17.30 both ends of experiment pipe fitting are shut, and pipe fitting front end is connected with height
Warm oil input hard tube 24, it penetrates pipe fitting front end flange 23, via front end flange rubber interlayer 22, front end connecting flange 21, cabin
Body front end flange 20 and hatchcover 3 are connected with the high temperature oil input hole 17 in nacelle, and it is defeated that rear end is equally connected with high temperature high pressure oil
Go out hard tube 39, it penetrates pipe fitting flange at tail end 38, via end flange rubber interlayer 37, tail end connecting flange 36, nacelle tail end
After flange 35 and tail stud 18, it is connected with the high temperature oil delivery outlet 16 in nacelle.There is height inside such guarantee test pipe fitting 30
Warm oil, to simulate its actual operation state.
As shown in Figure 3 and Figure 4, its pipeclay pressurized strut schematic device.The inside of pipeclay pressurized strut 26 dress can have different materials
The matter soil body 28, its top be equipped with data cable punched out 29 to ensure DATA REASONING line by while, can also ensure high pressure water
Pass through.26 inside both ends of pipeclay pressurized strut are equipped with elastomer 25, its cross section is annulus, outer wall and pipeclay pressurized strut 26
Inner wall contacts, and inner wall is contacted with experiment 30 outer wall of pipe fitting, to ensure that the soil body is not scattered in experimentation.Impulse first 9
Servo hydraulic oil cylinder is utilized with 12, different types of seismic (seismal can be applied, it by preceding operating bar 31 and 40, passes through ten thousand respectively
It is connected to ball with operating bar 32 and 41,32 and 41 other end of operating bar is spherical on loaded ring 34 with impulsing by multi-directional ball respectively
Link slot 33 and 42 connect, can so ensure it is two-way impulse while load, do not disturb.
During experiment, test after pipe fitting 30 and pipeclay pressurized strut 29 be installed in place, opened using lateral perforate 13 and bottom
Hole 10 is respectively by vertical operating bar 31 and lateral impulse operating bar 40 and 12 phase of vertical shock excitation device 9 and lateral shock excitation device of impulsing
Even.Lateral perforate 13 and bottom opening 10 are closed off afterwards, closes osculum 15, are noted using inlet opening 14 to nacelle inside
Water, treats that water filling finishes, and stands certain time, after the 29 inside soil body of pipeclay pressurized strut is saturated-water phase, utilizes external high temperature
Oily equipment, via high temperature oil input hole 17 to high temperature oil is injected inside experiment pipe fitting 30, and is exported by high temperature oil delivery outlet 16
To high temperature oil equipment.
Claims (1)
1. a kind of in-service deep seafloor buried pipeline earthquake-high pressure load combination loading test method, used device include
Nacelle, nacelle include nacelle main body (4) and hatchcover (3)；
Nacelle is provided with some perforates, including data acquisition hole (6), pressurizes hole (7), the vertical application well that impulses (8), laterally impulses
Application well (11), bottom opening (10), lateral perforate (13), inlet opening (14), osculum (15), high temperature oil input hole (17) and
High temperature oil delivery outlet (16)；Shock excitation device is installed in the vertical application well that impulses (8) and lateral application well (11) place that impulses, is used for
Oscillating load is radially applied to pipe fitting；
Experiment pipe fitting (30) is located at nacelle body interior, and front end is connected with high temperature oil input hard tube (24), it penetrates pipe fitting respectively
Front end flange (23), after front end flange rubber interlayer (22), front end connecting flange (21) and nacelle front end flange (20), with
High temperature oil input hole (17) on hatchcover is connected；Rear end is equally connected with high temperature oil output hard tube (39), it penetrates pipe fitting tail end
Flange (38), after flange at tail end rubber interlayer (37), tail end connecting flange (36) and nacelle flange at tail end (35), with nacelle
The high temperature oil delivery outlet (16) of rear end is connected；
There is pipeclay pressurized strut (26) in the external stability of experiment pipe fitting (30), which is provided with data cable punched out (29) to ensure
DATA REASONING line by while, can also ensure that high pressure water passes through；The internal both ends of pipeclay pressurized strut (26) are equipped with high-elastic rubber
Glue (25), its cross section are annulus, and outer wall is contacted with pipeclay pressurized strut (26) inner wall, and inner wall connects with experiment pipe fitting (30) outer wall
Touch, to ensure that the soil body is not scattered in experimentation；
Test procedure includes：After experiment pipe fitting and pipeclay pressurized strut are installed in place, respectively will using lateral perforate and bottom opening
It is vertical to impulse operating bar and the lateral operating bar that impulses is connected with vertical shock excitation device and lateral shock excitation device, side is closed off afterwards
To perforate and bottom opening, osculum is closed, using inlet opening to nacelle internal water flooding, treats that water filling finishes, stands certain time,
After the soil body is saturated-water phase inside the pipeclay pressurized strut, using external high temperature oil equipment, via high temperature oil input hole to experiment
Inside pipe fitting injects high temperature oil, and is exported by high temperature oil delivery outlet to high temperature oil equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711129432.2A CN108007792B (en) | 2017-11-15 | 2017-11-15 | Earthquake-high pressure load combined loading test method for in-service deep sea seabed buried pipeline |
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|---|---|---|---|
| CN201711129432.2A CN108007792B (en) | 2017-11-15 | 2017-11-15 | Earthquake-high pressure load combined loading test method for in-service deep sea seabed buried pipeline |
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| CN108007792A true CN108007792A (en) | 2018-05-08 |
| CN108007792B CN108007792B (en) | 2020-05-08 |
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Cited By (8)
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| CN108801798A (en) * | 2018-06-15 | 2018-11-13 | 中国海洋石油集团有限公司 | A kind of hydraulic pressure provides the complex load experimental rig of axle power load |
| CN110018047A (en) * | 2019-03-12 | 2019-07-16 | 天津大学 | A kind of deep-sea pipeline Complicated Loads combination loading pilot system |
| CN110196156A (en) * | 2019-03-12 | 2019-09-03 | 天津大学 | A kind of deep-sea pipeline Complicated Loads combination loading test method |
| CN112197925A (en) * | 2020-09-30 | 2021-01-08 | 天津大学 | Experimental device for simulating fatigue damage of deep-water steel catenary riser contact section |
| CN112461468A (en) * | 2020-11-18 | 2021-03-09 | 中国核动力研究设计院 | Seismic test equipment pipe connection load simulation device and simulation method |
| CN112577826A (en) * | 2020-12-02 | 2021-03-30 | 天津大学 | Test platform for simulating uniform load of pipeline in deepwater environment |
| CN112577827A (en) * | 2020-12-02 | 2021-03-30 | 天津大学 | Test method for simulating uniform load of pipeline in deepwater environment |
| CN114018539A (en) * | 2021-09-15 | 2022-02-08 | 山东大学 | Seabed oil and gas pipeline stability model test device and test method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801798A (en) * | 2018-06-15 | 2018-11-13 | 中国海洋石油集团有限公司 | A kind of hydraulic pressure provides the complex load experimental rig of axle power load |
| CN108801798B (en) * | 2018-06-15 | 2021-02-09 | 中国海洋石油集团有限公司 | Complicated load test device for providing axial force loading by water pressure |
| CN110018047A (en) * | 2019-03-12 | 2019-07-16 | 天津大学 | A kind of deep-sea pipeline Complicated Loads combination loading pilot system |
| CN110196156A (en) * | 2019-03-12 | 2019-09-03 | 天津大学 | A kind of deep-sea pipeline Complicated Loads combination loading test method |
| CN110196156B (en) * | 2019-03-12 | 2024-03-22 | 天津大学 | Deep sea pipeline complex load combined loading test method |
| CN112197925A (en) * | 2020-09-30 | 2021-01-08 | 天津大学 | Experimental device for simulating fatigue damage of deep-water steel catenary riser contact section |
| CN112461468A (en) * | 2020-11-18 | 2021-03-09 | 中国核动力研究设计院 | Seismic test equipment pipe connection load simulation device and simulation method |
| CN112577826A (en) * | 2020-12-02 | 2021-03-30 | 天津大学 | Test platform for simulating uniform load of pipeline in deepwater environment |
| CN112577827A (en) * | 2020-12-02 | 2021-03-30 | 天津大学 | Test method for simulating uniform load of pipeline in deepwater environment |
| CN112577827B (en) * | 2020-12-02 | 2022-03-29 | 天津大学 | Test method for simulating uniform load of pipeline in deepwater environment |
| CN114018539A (en) * | 2021-09-15 | 2022-02-08 | 山东大学 | Seabed oil and gas pipeline stability model test device and test method |
| CN114018539B (en) * | 2021-09-15 | 2023-08-29 | 山东大学 | Submarine oil and gas pipeline stability model test device and test method |
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