CN107246912A - A kind of marine riser vortex-induced vibration monitoring method based on accidental resonance - Google Patents
A kind of marine riser vortex-induced vibration monitoring method based on accidental resonance Download PDFInfo
- Publication number
- CN107246912A CN107246912A CN201710480805.4A CN201710480805A CN107246912A CN 107246912 A CN107246912 A CN 107246912A CN 201710480805 A CN201710480805 A CN 201710480805A CN 107246912 A CN107246912 A CN 107246912A
- Authority
- CN
- China
- Prior art keywords
- marine riser
- signal
- vibration
- vortex
- monitoring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
Abstract
The invention provides a kind of marine riser vortex-induced vibration monitoring method based on accidental resonance, monitoring system is installed on marine riser, obtain the vibration signal of marine riser, first pass around Nonlinear harmonic oscillator unit-stochastic resonance system and carry out signal transacting, then the frequency of water proof vortex-induced vibration is obtained by analysis of spectrum, and then discriminates whether occur vortex-induced vibration.The present invention can detect marine riser vortex-induced vibration frequency from complicated seanoise background, improve the Monitoring Performance of monitoring system.
Description
Technical field
The present invention relates to ocean engineering and deep water oil field, especially with regard to a kind of deep water suitable for long service every
Water pipe vortex-induced vibration monitoring method.
Background technology
In offshore oil field, marine riser is to connect subsea wellheads and the throat thoroughfare of operations offshore platform, is deep water oil
The important weapon of gas exploration exploitation, also deepwater oil-gas development technically require the part of highest, most challenge.Mesh
Before, marine oil and gas drilling well is marched to the even deeper marine sites of 3000m.Compared with phytal zone, abyssal environment is more severe.In recent years,
Occur a series of marine riser fatigue failure accidents in many areas, this not only embodies the excessive risk of deepwater petroleum exploration exploitation,
The necessity and importance of marine riser fatigue monitoring are more fullyd illustrate.Marine riser is under the effect of wave, ocean current and internal load
Complexity move steady-error coefficient be water proof tube failure major reason, particularly vortex-induced vibration produce alternating stress load be water proof
The main cause of tube failure.Swash in the whirlpool for occurring to be characterized with fluid structurecoupling under the effect of the complex environment such as ocean current and wave load
Vibration, its alternate stress produced causes the fatigue of marine riser, damaged as low cycle fatigue loading, or even induction pipeline break,
A series of accidents such as leakage.The monitoring of marine riser vortex-induced vibration is analyze marine riser stability, assess its fatigue life premise and
Basis, is to reduce failure risk, generation of preventing accident, ensure the optimal selection of safety military service.
But, under complicated ambient sea noise, it is difficult to which on-line checking goes out the vibration frequency of marine riser.In real time obtain every
The vibration frequency of water pipe, it is ensured that marine riser is operated in safe range, is that the problem cracked is needed in deep water petroleum operations badly.Look back institute
There is the signal detecting method of Weak characteristic, no matter being realized using hardware or software, all based on noise is suppressed, arranged using various
Apply and suppress noise as far as possible, then useful signal is extracted.Marine riser vortex-induced vibration frequency signal is complete under strong noise background
Total flooding is in noise, it is impossible to detected.Noise is often suppressed using the method for linear filtering at this stage, but when noise frequency
When rate is close with vibration frequency, linear filtering can also weaken vibration signal.However, stochastic resonance method is then different, it passes through one
Individual nonlinear system, strengthens detection Weak characteristic signal using the energy of noise is converted into the mechanism of signal energy.For a long time
Since, people it is more think that " noise " is disagreeable thing, the ordering behavior that it destroys system reduces the performance of system,
It is a big obstacle of Detection of Weak Signals, and uses the method detection signal of accidental resonance, the increase of noise will not deteriorates specific
The characteristic signal of output in frequency band range, on the contrary, output local SNR can be caused to be improved, strengthens the aobvious of signal
It is existing.Using the signal processing method of accidental resonance, marine riser vortex-induced vibration frequency signal can be detected from strong noise background.
The content of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of marine riser vortex-induced vibration monitoring based on accidental resonance
Method, first passes around Nonlinear harmonic oscillator unit-stochastic resonance system and carries out signal transacting, then obtained by analysis of spectrum
The frequency of water proof vortex-induced vibration, and then discriminate whether occur vortex-induced vibration.The present invention can be from complicated seanoise background
Marine riser vortex-induced vibration frequency is detected, the Monitoring Performance of monitoring system is improved.
The technical solution adopted for the present invention to solve the technical problems comprises the following steps：
1) marine riser vortex-induced vibration monitoring system, including monitoring system and monitoring and display centre are set；Described monitoring
System includes sensor, Stochastic Resonance Signal processing system, processor, power amplifier and underwater sound transmitting transducer；Described
Monitoring includes underwater sound receive transducer, A/D converter, amplifier, demodulator and decoder with display centre；
2) marine riser enters before water, and monitoring system is installed on marine riser；After the completion of marine riser deployment, working sensor is obtained
The vibration signal of marine riser is taken, described Stochastic Resonance Signal processing system improves the noise of vibration signal using accidental resonance
Than detecting the vibration frequency of marine riser by processor；Vibration frequency signal passes through power amplifier and underwater sound transmitting transducer
Acoustical signal transmitting is transformed to, is transmitted by underwater acoustic channel to monitoring and display centre；
3) underwater sound receive transducer of monitoring and display centre receives acoustical signal and is converted to electric signal, is changed by A/D
Demodulator and decoder is sent to after device and amplifier filter and amplification, is demodulated and decodes, marine riser vibration frequency number is obtained
According to；
4) judge whether marine riser occurs vortex-induced vibration according to marine riser vibration information.
In the Stochastic Resonance Signal processing system, output signal x inverseFormula
In, V (x) is nonlinear bistability potential function, and s (t) is external drive signal, and η (t) is ambient noise.
Described underwater sound receive transducer, which is hung, is located at 10~20m positions below drilling platforms, swashs for receiving marine riser whirlpool
The frequency signal of vibration.
The beneficial effects of the invention are as follows：
1) small-signal is carried out signal enhancing by the present invention by Nonlinear harmonic oscillator unit-stochastic resonance system, should
Stochastic resonance system, it is possible to use noise-excitation goes out to be hidden in the small-signal in strong noise background, improves water proof tube vibration letter
Number signal to noise ratio, there is obvious superiority compared with linear filter.
2) because the present invention can realize on-line checking to marine riser vibration frequency, relatively transmission initial data data volume substantially drops
Low, data transmission period is decreased, under same transmission power, lower power consumption, therefore under conditions of the energy content of battery is constant,
Improve the life cycle of marine riser inclined angle monitoring system.
In summary, the characteristics of present invention has high detection performance, energy-conservation and long lifespan, can be widely applied to deep-sea ring
In the marine riser vortex-induced vibration monitoring in border.
Brief description of the drawings
Fig. 1 is the marine riser vortex-induced vibration Fundamentals of Supervisory Systems schematic diagram of the present invention；
The marine riser vortex-induced vibration monitoring system that Fig. 2 is the present invention installs general illustration.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples, and the present invention includes but are not limited to following implementations
Example.
A kind of marine riser vortex-induced vibration monitoring method based on accidental resonance that the present invention is provided, including herein below：1)
Setting one includes marine riser vibration frequency detecting system, underwater sound signal reception device and the marine riser vortex-induced vibration of Surveillance center prison
Examining system；Marine riser vibration detecting system includes sensor, Stochastic Resonance Signal processing system, processor, power amplifier, water
Acoustic emission transducer and power supply；Data receiver includes underwater sound receive transducer, A/D converter, amplifier, demodulation with display platform
Device and decoder；Its connected mode such as accompanying drawing 1, its interface does not have special connected mode；2) marine riser enters before water, on marine riser
Marine riser vortex-induced vibration monitoring system is installed, after the completion of marine riser deployment, monitoring system, which is started working, obtains shaking for marine riser
Dynamic information.In strong noise background, much noise is mingled with the vibration signal of acquisition, often vibration signal is submerged in completely
In noise.The linear filter technology of abandoning tradition in the present invention, using Nonlinear harmonic oscillator unit, using accidental resonance technology
The signal to noise ratio of vibration signal is improved, signal processor is more readily detected the frequency of water proof tube vibration；3) underwater sound is believed
Number reception device, which is hung, is located at 10~20m positions below drilling platforms, the frequency signal for receiving marine riser vortex-induced vibration.Specifically
For：The acoustical signal for including marine riser vortex-induced vibration information received from underwater acoustic channel is converted to electric signal warp by receive transducer
Be sent to that demodulator and decoder is demodulated respectively and decoding obtains marine riser vibration frequency data after filter and amplification, and by its
It is sent to data monitor center；4) data monitor center is shown and preserved to the marine riser vibration frequency data of reception, prison
The marine riser vibration information that control care workers show according to data control center judges now whether marine riser occurs whirlpool exciting
It is dynamic, and take corresponding measure.
The step 2) in signal processing unit-stochastic resonance system can be described by Langevin equation, specific formula for calculation
For：
In formula：It is output signal x inverse, V (x) is nonlinear bistability potential function, and s (t) is external drive signal, η
(t) it is ambient noise.Analysis by docking the collection of letters number determines the systematic parameter of best match.
As shown in figure 1, the marine riser vortex-induced vibration monitoring system of the embodiment of the present invention includes a marine riser vibration monitoring system
System 20 and monitoring and display centre 21.Marine riser vibration monitor system 20 includes：Sensor 7 is used to obtain vibration data, at random
The application accidental resonance technology enhancing weak signal of resonator system 8, processor 9 is used for realizing the on-line checking of vibration frequency, and will be every
SD card 10 is arrived in vibration initial data and the frequency storage of water pipe, and processor 9 is additionally operable to the work of marine riser vibration monitor system 20
Row control, power amplifier 12 is used to the signal detected carrying out power amplification, and transmitting transducer is used to convert electrical signals to sound
Signal, is transmitted by underwater acoustic channel 14.Monitoring includes with display centre 21：Receive transducer 15, A/D converter 16, preceding storing
Big device 17, demodulation/decoding 18.Wherein receive transducer 15 is used for receiving marine riser vibration frequency acoustical signal, and realizes acoustical signal
To the conversion of electric signal.Electric signal after filter and amplification is subjected to A/D conversions 16, analog electrical signal is converted into data signal.
As shown in Fig. 2 before 3 times water of marine riser, the deployment marine riser vortex-induced vibration monitoring system 5 in precalculated position, every
Water pipe is gradually transferred on ocean platform 1, untill water proof bottom of the tube is docked with well head 4.Underwater sound receive transducer 6 is main
For receiving the vibration frequency acoustical signal of marine riser, and acoustical signal is converted into electric signal, monitoring and display centre 2 are mainly used to
The marine riser vibration frequency data currently obtained are preserved, ocean platform staff can be presented by monitoring and display centre 2
Marine riser vibration frequency, judge whether current marine riser 3 occurs vortex-induced vibration, and take corresponding measure in time, prevention whirlpool is swashed
The generation of vibration.Based on above-mentioned marine riser vortex-induced vibration monitoring system, marine riser vortex-induced vibration monitoring method bag of the invention
Include herein below：
1st, marine riser 3 enters before water, vortex-induced vibration monitoring system 5 is installed on the precalculated position of marine riser 3, marine riser 3 is supported
Up to after subsea wellheads 4, vortex-induced vibration monitoring system 5 is initially entered in normal operating conditions.Monitoring system gathers water proof in real time
The vibration information of pipe 3, the vibration information after collection carries out the pretreatment of vibration signal by stochastic resonance system 8, is strengthened with this
Signal.It will be detected, at the same time write the initial data collected by the vibration signal of pretreatment with preprocessor 9
SD card 10 preserves data.The frequency information detected completes message sink coding and letter first in source encoder and channel encoder
Road is encoded, it is encoded after signal entering signal modulator be modulated, and the signal after modulation is sent to power amplification
Device 12 carries out power amplification, and the signal after power amplification will be included water proof by power amplifier 12 through underwater sound transmitting transducer 13
The electric signal of tube vibration frequency information is converted to acoustical signal and launched, and acoustical signal is propagated through underwater acoustic channel.
2nd, underwater sound signal reception device 6 is hung and is located at some position below sea (by underwater sound signal in the embodiment of the present invention
Reception device dipping shot is in b.s.l. 50m or so, but not limited to this, as long as signal can be received), for receiving
The vibration frequency data of marine riser 3, be specially：Underwater sound receive transducer 6 includes water proof tube vibration by what is received from underwater acoustic channel
The acoustical signal of frequency is converted to electric signal and by, by A/D converter 16, the electric signal of simulation being converted to after filter and amplification
Data signal.Demodulation/decoder 18 is demodulated respectively and decoding obtains marine riser vibration frequency data, and sends it to whirlpool
Excited vibration Surveillance center 19.
3rd, the marine riser vibration frequency data of 19 pairs of receptions of vortex-induced vibration Surveillance center are shown and preserved, working platform
The marine riser vibration frequency information that personnel can show according to vortex-induced vibration data monitor center 19 judges turning for current marine riser
State.
The various embodiments described above are merely to illustrate the present invention, and wherein each implementation steps of method etc. are all to be varied from
, every equivalents carried out on the basis of technical solution of the present invention and improvement should not exclude the protection in the present invention
Outside scope.
Claims (3)
1. a kind of marine riser vortex-induced vibration monitoring method based on accidental resonance, it is characterised in that comprise the steps：
1) marine riser vortex-induced vibration monitoring system, including monitoring system and monitoring and display centre are set；Described monitoring system
Including sensor, Stochastic Resonance Signal processing system, processor, power amplifier and underwater sound transmitting transducer；Described monitoring
Include underwater sound receive transducer, A/D converter, amplifier, demodulator and decoder with display centre；
2) marine riser enters before water, and monitoring system is installed on marine riser；When marine riser deployment after the completion of, working sensor obtain every
The vibration signal of water pipe, described Stochastic Resonance Signal processing system improves the signal to noise ratio of vibration signal using accidental resonance, by
Processor detects the vibration frequency of marine riser；Vibration frequency signal is transformed to by power amplifier and underwater sound transmitting transducer
Acoustical signal is launched, and is transmitted by underwater acoustic channel to monitoring and display centre；
3) monitoring receives acoustical signal with the underwater sound receive transducer of display centre and is converted to electric signal, by A/D converter and
Demodulator and decoder is sent to after amplifier filter and amplification, is demodulated and decodes, marine riser vibration frequency data are obtained；
4) judge whether marine riser occurs vortex-induced vibration according to marine riser vibration information.
2. the marine riser vortex-induced vibration monitoring method according to claim 1 based on accidental resonance, it is characterised in that：It is described
In Stochastic Resonance Signal processing system, output signal x inverseIn formula, V (x) is non-thread
Property bistable state potential function, s (t) be external drive signal, η (t) be ambient noise.
3. the marine riser vortex-induced vibration monitoring method according to claim 1 based on accidental resonance, it is characterised in that：It is described
Underwater sound receive transducer hang and be located at 10~20m positions below drilling platforms, the frequency for receiving marine riser vortex-induced vibration is believed
Number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710480805.4A CN107246912A (en) | 2017-06-22 | 2017-06-22 | A kind of marine riser vortex-induced vibration monitoring method based on accidental resonance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710480805.4A CN107246912A (en) | 2017-06-22 | 2017-06-22 | A kind of marine riser vortex-induced vibration monitoring method based on accidental resonance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107246912A true CN107246912A (en) | 2017-10-13 |
Family
ID=60019455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710480805.4A Pending CN107246912A (en) | 2017-06-22 | 2017-06-22 | A kind of marine riser vortex-induced vibration monitoring method based on accidental resonance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107246912A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541677A (en) * | 2019-08-13 | 2019-12-06 | 中国石油大学(华东) | Device, marine riser and method for inhibiting vortex-induced vibration |
| CN111829747A (en) * | 2020-07-18 | 2020-10-27 | 扬州大学 | Coastal bridge vortex-induced resonance wind field monitoring system based on fixed-wing unmanned aerial vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191804A (en) * | 2007-12-03 | 2008-06-04 | 中国人民解放军国防科学技术大学 | Self-adapting random resonant weak signal detection method |
| CN201292834Y (en) * | 2008-10-08 | 2009-08-19 | 抚州市临川白勇海洋工程有限公司 | Riser monitoring system based on underwater sound |
| CN101561293A (en) * | 2009-05-11 | 2009-10-21 | 天津大学 | Weak characteristic information recovery system based on stochastic resonance |
| CN102162769A (en) * | 2011-01-05 | 2011-08-24 | 中国海洋石油总公司 | Fatigue multi-point wireless monitoring system of marine riser |
| CN102226740A (en) * | 2011-04-18 | 2011-10-26 | 中国计量学院 | Bearing fault detection method based on manner of controlling stochastic resonance by external periodic signal |
| CN102426773A (en) * | 2011-09-01 | 2012-04-25 | 西北工业大学 | Measurement and transmission apparatus for marine riser fatigue parameter and calculation method of optimal repeater spacing |
-
2017
- 2017-06-22 CN CN201710480805.4A patent/CN107246912A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191804A (en) * | 2007-12-03 | 2008-06-04 | 中国人民解放军国防科学技术大学 | Self-adapting random resonant weak signal detection method |
| CN201292834Y (en) * | 2008-10-08 | 2009-08-19 | 抚州市临川白勇海洋工程有限公司 | Riser monitoring system based on underwater sound |
| CN101561293A (en) * | 2009-05-11 | 2009-10-21 | 天津大学 | Weak characteristic information recovery system based on stochastic resonance |
| CN102162769A (en) * | 2011-01-05 | 2011-08-24 | 中国海洋石油总公司 | Fatigue multi-point wireless monitoring system of marine riser |
| CN102226740A (en) * | 2011-04-18 | 2011-10-26 | 中国计量学院 | Bearing fault detection method based on manner of controlling stochastic resonance by external periodic signal |
| CN102426773A (en) * | 2011-09-01 | 2012-04-25 | 西北工业大学 | Measurement and transmission apparatus for marine riser fatigue parameter and calculation method of optimal repeater spacing |
Non-Patent Citations (1)
| Title |
|---|
| 任立通 等: ""基于随机共振预处理的振动故障特征提取研究"", 《振动与冲击》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541677A (en) * | 2019-08-13 | 2019-12-06 | 中国石油大学(华东) | Device, marine riser and method for inhibiting vortex-induced vibration |
| CN111829747A (en) * | 2020-07-18 | 2020-10-27 | 扬州大学 | Coastal bridge vortex-induced resonance wind field monitoring system based on fixed-wing unmanned aerial vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7313052B2 (en) | System and methods of communicating over noisy communication channels | |
| US9557434B2 (en) | Apparatus and method for detecting fracture geometry using acoustic telemetry | |
| CN105318964B (en) | A kind of submarine pipeline suspended span vortex-induced vibration actively monitoring system and method | |
| US7123161B2 (en) | Method and apparatus enhanced acoustic mud pulse telemetry | |
| CN108549105A (en) | A kind of seismic wave characteristic extracting method of self-adapting random resonant | |
| CN107246912A (en) | A kind of marine riser vortex-induced vibration monitoring method based on accidental resonance | |
| RU2485311C2 (en) | Method and system for transfer of data on well shaft | |
| US10175094B2 (en) | Fiber optic communications with subsea sensors | |
| US9435197B2 (en) | Distributed marinized borehole system | |
| CN205374739U (en) | All -round monitored control system under water | |
| WO2011137375A2 (en) | Ultrasonic communication systems for communication through rf-impervious enclosures and abutted structures | |
| CN107575212A (en) | Ultrasonic wave is with brill gas cut monitoring device and method | |
| CN104613927A (en) | Method for monitoring rotating angle of deep marine riser | |
| WO2022052622A1 (en) | Apparatus for monitoring deep-sea polymetallic nodule mining sediment environment | |
| CN109281657A (en) | A kind of deep sea drilling gas incursion check system | |
| CN209673327U (en) | For studying the interior estimates generating device of interior estimates test | |
| Booth et al. | Apparatus investigates geological aspects of gas hydrates | |
| CN114704250A (en) | Sound wave wireless transmission method and device, electronic equipment and storage medium | |
| Tabella et al. | Data fusion for subsea oil spill detection through wireless sensor networks | |
| CN114109358B (en) | Emergency sonar monitoring system and method for blowout preventer at wellhead of deep sea oil field | |
| CN208248433U (en) | A kind of tsunami monitoring anchor containing auxiliary anchor device | |
| CN110572344B (en) | Demodulation method for deep sea vertical underwater acoustic communication | |
| CN204421880U (en) | A kind of deep water riser corner monitoring system | |
| CN205506138U (en) | Mine pipeline water flow monitoring device | |
| CN112412447B (en) | Methane logging system for open-circuit drilling wellhead |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171013 |