CN106055758A - Free spanning submarine pipeline information calculation method based on ROV survey data - Google Patents
Free spanning submarine pipeline information calculation method based on ROV survey data Download PDFInfo
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Abstract
The present invention discloses a free spanning submarine pipeline information calculation method based on ROV survey data. The method comprises the steps of determining main factors influencing a free spanning submarine pipeline, establishing a pipeline structure finite element model, establishing a pipeline and seabed contact interactional model, inverting the ROV survey data, and calculating displacement, stress and strain distribution information of the pipeline under the current operating condition. Current accurate information of the free spanning submarine pipeline is obtained, free spanning state change caused by operation condition change and the influence on pipeline safety are eliminated, and scientificity of free spanning submarine pipeline safety evaluation is further improved.
Description
Technical field
The invention belongs to marine oil and gas production risk management domain, particularly to a kind of operating mode, submarine pipeline state is affected
Method.
Background technology
Marine oil and gas exploitation and collect defeated during, submarine pipeline is most important oil gas conveying equipment, inevitably
Will be through sea-floor relief rough areas, now sea pipe will appear from serious suspended span phenomenon.China coastal seas has many oil fields in previous generation
Discipline 80～the nineties go into operation and run, and As time goes on, suspended span problem is increasingly severe and causes extensive attention in the industry.?
In present engineering reality, according to code requirement and practical operation situation, produce relevant critical facility equipment to marine oil and gas
At whole ROV inspection to be carried out, the pipeline elevation obtained distribution and suspended span information, and pipeline during ROV investigation
Work information (interior current density, temperature and pressure), and utilize the suspended span state obtained in ROV investigation, in conjunction with industry standard evaluation
The safety of suspended span pipeline.
Under different operating modes, suspended span state changes relatively big, but ROV investigation cost is expensive, lasts longer, the most annual or several
A ROV investigation can be carried out year.Therefore, when sea pipe operating condition changes, ROV survey data under former operating mode several years ago is utilized
The pipe safety error of quality appraisement obtained is relatively big, is badly in need of a kind of free spanning submarine pipeline information projectional technique, thus is used for evaluating operating mode
Method on the impact of submarine pipeline state.
Summary of the invention
It is an object of the invention to: a kind of free spanning submarine pipeline information projectional technique based on ROV survey data is provided, obtains
The accurate information that free spanning submarine pipeline is current, eliminates the suspended span state that working conditions change causes and changes and shadow to pipe safety
Ring, further increase the science of suspended span sea pipe safety evaluation.
The technical scheme is that a kind of free spanning submarine pipeline information projectional technique based on ROV survey data, including
Following steps:
Step one: determine the principal element affecting suspended span sea tubulose state, mainly submarine topography data, the sandy ginseng in seabed
Number, pipe laying parameter, pipeline section parameter, weld seam process quality, expansion loop distribution, pipeline current along the line and temperature；
Step 2: use vector mode Finite Element Method, sets up pipeline configuration FEM (finite element) model, calculates pipeline configuration；
Step 3: according to bottom information, in conjunction with pipeline configuration FEM (finite element) model, set up the mould that pipeline interacts with bottom
Type；
Step 4: utilize the model that pipeline configuration FEM (finite element) model and pipeline interact with bottom, to ROV survey data
Carry out inverting, obtain the piping displacement corresponding to ROV survey result, stress and strain distributed intelligence；
Step 5: change the operational factor of the model that pipeline configuration FEM (finite element) model and pipeline interact, mould with bottom
Intend the displacement of pipeline under ROV survey data to current working, stress and strain along the situation of change of time；
Step 6: calculate the displacement of pipeline under current working, stress and strain distribution.
Closer, the method for optimizing that pipeline configuration described in step 2 calculates is vector mode Nonlinear FEM Space Beam
Unit, comprises the following steps:
A. by structural separation particle and the unit of connection particle；
B. set initial position and the initial velocity of each particle, set the initial internal force of each unit；
C. the computing unit active force to each node, calculates the gravity suffered by each node, buoyancy, hydrodynamic force, the soil body
To system external force such as pipeline active forces；
D. central difference method calculates each particle displacement；
E. the pure deformation displacement of cell node is solved；
F. element force is solved；
G. particle internal force and external force are integrated；
H. update the system physical time, return step D, start future time step particle position and element force calculates；
I. after having calculated, export structure displacement, stress and strain.
Closer, the method for optimizing of the model that pipeline interacts with bottom is set up described in step 3, including following
Step:
A. initial time, sets body and is in contactless state with the soil body, given pipeline and the vertical coordinate of bottom upper surface
Initial value；
B. after updating pipeline site position, it is judged that whether each pipeline node comes in contact with bottom；
If C. pipeline contacts with bottom, according to the relative displacement between pipeline and bottom, solve the bottom active force to pipeline；
Bottom can be caused to deform simultaneously as pipeline contacts with bottom, correspondingly need to update bottom position；
If D. pipeline and bottom are in contactless state, bottom is zero to pipeline active force, and bottom shape is remained stationary.
Closer, described in step 4, ROV survey data is carried out the method for optimizing of inverting, comprises the following steps:
A. transfer cross-section of pipeline parameter, pipe wall material parameter, bottom fluctuating situation and the sandy parameter of bottom, set up pipeline
With bottom FEM (finite element) model；
B., pipeline initial condition is set, including intrinsic pressure and interior stream temperature；Under original state, pipeline is straight to be positioned at above bottom
And it is in contactless state with bottom；
C. residual tensions is applied in pipe ends；
D. applying pipeline gravity and buoyancy, make pipeline slowly land and contact with bottom, obtain after pipe laying is initial
State；
E. transferring conduit running historical data, stream temperature intrinsic pressure including pipeline, interior and External airflow field situation, simulation pipeline is certainly
Lay to ROV investigate time running status, obtain ROV investigate time suspended span duct size information；
F. the suspended span duct size information contrast obtained with ROV investigation, adjusts conduit running history parameters, obtains investigating with ROV
The suspended span pipeline conditions that data are coincide, i.e. completes the inverting of suspended span pipeline conditions.
The present invention is by using vector mode Finite Element Method, setting up pipeline configuration FEM (finite element) model, set up pipeline and bottom
The model interacted, has carried out inverting to ROV survey data, has obtained accurate current pipeline suspended span state and has answered
The mechanics parameter such as power, stress distribution, can be used for current mechanics of piping parameter, to the pipe safety evaluation of suspended span sea, further increasing
The pipe safety evaluation of suspended span sea is scientific.
Accompanying drawing explanation
Fig. 1 is step of the present invention；
Fig. 2 is difference operating mode of the present invention lower three sections of suspended span pipeline conditions change；
Three sections of suspended span pipeline conditions changes when Fig. 3 is difference of the present invention interior stream temperature；
Fig. 4 is statistical result between suspended span length and suspended span area district under difference operating mode of the present invention；
Suspended span length, allowable span length and suspended span altitudes under Fig. 5 present invention segment pipe difference operating mode.
Detailed description of the invention
Embodiment 1: participate in Fig. 1, a kind of free spanning submarine pipeline information projectional technique based on ROV survey data, including with
Lower step:
Step one: determine the principal element affecting suspended span sea tubulose state, mainly submarine topography data, the sandy ginseng in seabed
Number, pipe laying parameter, pipeline section parameter, weld seam process quality, expansion loop distribution, pipeline current along the line and temperature.
Step 2: use vector mode Finite Element Method, sets up pipeline configuration FEM (finite element) model, calculates pipeline configuration；Described
The method for optimizing that pipeline configuration calculates is vector mode Nonlinear FEM spatial beam, comprises the following steps:
A. by structural separation particle and the unit of connection particle；
B. set initial position and the initial velocity of each particle, set the initial internal force of each unit；
C. the computing unit active force to each node, calculates the gravity suffered by each node, buoyancy, hydrodynamic force, the soil body
To system external force such as pipeline active forces；
D. central difference method calculates each particle displacement；
E. the pure deformation displacement of cell node is solved；
F. element force is solved；
G. particle internal force and external force are integrated；
H. update the system physical time, return step D, start future time step particle position and element force calculates；
I. after having calculated, export structure displacement, stress and strain.
Step 3: according to bottom information, in conjunction with pipeline configuration FEM (finite element) model, set up the mould that pipeline interacts with bottom
Type；The described method for optimizing setting up the model that pipeline interacts with bottom, comprises the following steps:
A. initial time, sets body and is in contactless state with the soil body, given pipeline and the vertical coordinate of bottom upper surface
Initial value；
B. after updating pipeline site position, it is judged that whether each pipeline node comes in contact with bottom；
If C. pipeline contacts with bottom, according to the relative displacement between pipeline and bottom, solve the bottom active force to pipeline；
Bottom can be caused to deform simultaneously as pipeline contacts with bottom, correspondingly need to update bottom position；
If D. pipeline and bottom are in contactless state, bottom is zero to pipeline active force, and bottom shape is remained stationary.
Step 4: utilize the model that pipeline configuration FEM (finite element) model and pipeline interact with bottom, to ROV survey data
Carry out inverting, obtain the piping displacement corresponding to ROV survey result, stress and strain distributed intelligence；Described to ROV survey data
Carry out the method for optimizing of inverting, comprise the following steps:
A. transfer cross-section of pipeline parameter, pipe wall material parameter, bottom fluctuating situation and the sandy parameter of bottom, set up pipeline
With bottom FEM (finite element) model；
B., pipeline initial condition is set, including intrinsic pressure and interior stream temperature；Under original state, pipeline is straight to be positioned at above bottom
And it is in contactless state with bottom；
C. residual tensions is applied in pipe ends；
D. applying pipeline gravity and buoyancy, make pipeline slowly land and contact with bottom, obtain after pipe laying is initial
State；
E. transferring conduit running historical data, stream temperature intrinsic pressure including pipeline, interior and External airflow field situation, simulation pipeline is certainly
Lay to ROV investigate time running status, obtain ROV investigate time suspended span duct size information；
F. the suspended span duct size information contrast obtained with ROV investigation, adjusts conduit running history parameters, obtains investigating with ROV
The suspended span pipeline conditions that data are coincide, i.e. completes the inverting of suspended span pipeline conditions.
Step 5: change the operational factor of the model that pipeline configuration FEM (finite element) model and pipeline interact, mould with bottom
Intend the displacement of pipeline under ROV survey data to current working, stress and strain along the situation of change of time.
Step 6: calculate the displacement of pipeline under current working, stress and strain distribution.
Fig. 4 a and Fig. 4 b give blank pipe, water filling and the suspended span length of operation next section of true submarine pipeline of three kinds of operating modes and
Suspended span height change.Obtain the maximum allowable critical span length under different operating mode according to industry standard, be output in Fig. 5 a, can see
Going out: under blank pipe operating mode, only suspended span 8 is dangerous suspended span；Under water filling operating mode, only suspended span 8 is dangerous suspended span；Running work
Under condition, suspended span 8 and suspended span 13 are dangerous suspended span；
It practice, this segment pipe has been on active service for many years, carry out the ROV investigation under blank pipe operating mode, thereafter period in construction
Investigation pipeline is in water filling operating mode every time, but the pipeline overwhelming majority is under operating condition the time.If direct basis ROV investigates
Data carry out analysis, can determine suspended span 8 dangerous, neglect dangerous suspended span 13, and this is likely to result in serious environment and warp
Ji consequence.To dope the ROV investigation that dangerous suspended span 13 needs to carry out under operating condition in practical situation, but ROV investigation
Not only the time cycle is long, and somewhat expensive.Use the present invention, according only to the last ROV survey data, so that it may the most pre-
Measure dangerous suspended span 8 and dangerous suspended span 13, greatly improve the science that pipe safety is evaluated, save valuable time simultaneously
And expense.
Claims (4)
1. a free spanning submarine pipeline information projectional technique based on ROV survey data, it is characterised in that comprise the following steps:
Step one: determine the principal element affecting suspended span sea tubulose state, mainly submarine topography data, the sandy parameter in seabed, pipe
Parameter, pipeline section parameter, weld seam process quality, expansion loop distribution, pipeline current along the line and temperature are laid in road；
Step 2: use vector mode Finite Element Method, sets up pipeline configuration FEM (finite element) model, calculates pipeline configuration；
Step 3: according to bottom information, in conjunction with pipeline configuration FEM (finite element) model, set up the model that pipeline interacts with bottom；
Step 4: the model utilizing pipeline configuration FEM (finite element) model and pipeline to interact with bottom, is carried out ROV survey data
Inverting, obtains the piping displacement corresponding to ROV survey result, stress and strain distributed intelligence；
Step 5: change the operational factor of the model that pipeline configuration FEM (finite element) model and pipeline interact with bottom, simulation is certainly
ROV survey data is to the displacement of pipeline under current working, stress and strain along the situation of change of time；
Step 6: calculate the displacement of pipeline under current working, stress and strain distribution.
A kind of free spanning submarine pipeline information projectional technique based on ROV survey data, its feature exists
In, the method for optimizing that pipeline configuration described in step 2 calculates is vector mode Nonlinear FEM spatial beam, including following step
Rapid:
A. by structural separation particle and the unit of connection particle；
B. set initial position and the initial velocity of each particle, set the initial internal force of each unit；
C. the computing unit active force to each node, calculates the gravity suffered by each node, buoyancy, hydrodynamic force, the soil body to pipe
The system external force such as road active force；
D. central difference method calculates each particle displacement；
E. the pure deformation displacement of cell node is solved；
F. element force is solved；
G. particle internal force and external force are integrated；
H. update the system physical time, return step D, start future time step particle position and element force calculates；
I. after having calculated, export structure displacement, stress and strain.
A kind of free spanning submarine pipeline information projectional technique based on ROV survey data, its feature exists
In, set up the method for optimizing of the model that pipeline interacts with bottom described in step 3, comprise the following steps:
A. initial time, sets body and is in contactless state with the soil body, and given pipeline and the vertical coordinate of bottom upper surface are initial
Value；
B. after updating pipeline site position, it is judged that whether each pipeline node comes in contact with bottom；
If C. pipeline contacts with bottom, according to the relative displacement between pipeline and bottom, solve the bottom active force to pipeline；With
Time, bottom can be caused to deform owing to pipeline contacts with bottom, correspondingly need to update bottom position；
If D. pipeline and bottom are in contactless state, bottom is zero to pipeline active force, and bottom shape is remained stationary.
A kind of free spanning submarine pipeline information projectional technique based on ROV survey data, its feature exists
In, described in step 4, ROV survey data is carried out the method for optimizing of inverting, comprises the following steps:
A. transfer cross-section of pipeline parameter, pipe wall material parameter, bottom fluctuating situation and the sandy parameter of bottom, set up pipeline and the end
Bed FEM (finite element) model；
B., pipeline initial condition is set, including intrinsic pressure and interior stream temperature；Under original state, pipeline is straight be positioned at above bottom and with
Bottom is in contactless state；
C. residual tensions is applied in pipe ends；
D. apply pipeline gravity and buoyancy, make pipeline slowly land and contact with bottom, obtain the original state after pipe laying；
E. transferring conduit running historical data, stream temperature intrinsic pressure including pipeline, interior and External airflow field situation, simulation pipeline is from laying
To ROV investigate time running status, obtain ROV investigation time suspended span duct size information；
F. the suspended span duct size information contrast obtained with ROV investigation, adjusts conduit running history parameters, obtains and ROV survey data
The suspended span pipeline conditions coincideing, i.e. completes the inverting of suspended span pipeline conditions.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107609759A (en) * | 2017-08-29 | 2018-01-19 | 广州海洋地质调查局 | A kind of seabed engineering geology of exploiting ocean natural gas hydrates influences evaluation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561839A (en) * | 2008-05-13 | 2009-10-21 | 赵汝江 | Method for analyzing and measuring safety of petroleum pipeline suspended on seabed |
| CN103969268A (en) * | 2014-04-04 | 2014-08-06 | 中国科学院华南植物园 | Method for inverting surface soil physical parameters through passive microwave remote sensing |
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2016
- 2016-05-25 CN CN201610352735.XA patent/CN106055758B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561839A (en) * | 2008-05-13 | 2009-10-21 | 赵汝江 | Method for analyzing and measuring safety of petroleum pipeline suspended on seabed |
| CN103969268A (en) * | 2014-04-04 | 2014-08-06 | 中国科学院华南植物园 | Method for inverting surface soil physical parameters through passive microwave remote sensing |
Non-Patent Citations (3)
| Title |
|---|
| LEIGE XU.ET AL: ""Integrate pipe-soil Interaction Model with the Vector Form Intrinsic Finite Element Method-Nonlinear Analysis of Free-Span"", 《PROCEEDINGS OF THE TWENTY-FOURTH(2014) INTERNATIONAL OCEAN AND POLAR ENGINEERING CONFERENCE》 * |
| 曹玉龙 等: ""基于ANSYS的近底床悬跨海管建模技术研究"", 《力学与实践》 * |
| 许雷阁 等: ""基于向量式有限元方法的长输海底管道不平整度分析"", 《海管与船运》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107609759A (en) * | 2017-08-29 | 2018-01-19 | 广州海洋地质调查局 | A kind of seabed engineering geology of exploiting ocean natural gas hydrates influences evaluation method |
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