CN107940241A - Transient model-based frozen point position diagnosis system for gathering and transportation oil pipeline - Google Patents
Transient model-based frozen point position diagnosis system for gathering and transportation oil pipeline Download PDFInfo
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- CN107940241A CN107940241A CN201711105868.8A CN201711105868A CN107940241A CN 107940241 A CN107940241 A CN 107940241A CN 201711105868 A CN201711105868 A CN 201711105868A CN 107940241 A CN107940241 A CN 107940241A
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- petroleum pipeline
- point position
- collection petroleum
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- 230000001052 transient effect Effects 0.000 title claims abstract description 25
- 238000003745 diagnosis Methods 0.000 title description 6
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 230000005284 excitation Effects 0.000 claims abstract description 9
- 239000003208 petroleum Substances 0.000 claims description 31
- 230000009466 transformation Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 18
- 239000003921 oil Substances 0.000 description 14
- 230000000903 blocking effect Effects 0.000 description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipeline Systems (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a transient model-based system for diagnosing the position of a frozen and blocked point of an oil gathering and transportation pipeline, which comprises a computer, a transient excitation unit, a pressure acquisition unit and a temperature acquisition unit, wherein the transient excitation unit is used for applying pressure waves in the oil gathering and transportation pipeline, the pressure acquisition unit is used for detecting pressure signals at a monitoring point on the oil gathering and transportation pipeline, and the temperature acquisition unit is used for detecting temperature information at the monitoring point on the oil gathering and transportation pipeline.
Description
Technical field
The invention belongs to oil field digitlization and oil field gathering and transportation technical field, it is related to a kind of collection petroleum pipeline based on transient model
Line frozen block point position diagnostic system.
Background technology
Oil gas pipeline is the lifeline of China's energy industry, since north of china in winter temperature is generally in -10~-30 degree
Left and right, within ice period, being dehydrated the incomplete or aqueous wax that contains can agglomerate on oil pipeline or gas pipeline inner wall, cause to be situated between in pipe
Mass flow moves aperture and diminishes, constricted flow, and energy consumption increase, will cause pipeline part ice to block up or fill wax, so as to cause to stop when serious
It is defeated, bring very big puzzlement to bother to oil field production run, while during employee's de-plugging, severe natural environment is made for unimpeded work
Into very big difficulty.In winter, due to freezing reason, geology is very hard, for buried pipeline, it is necessary to the work for operation of digging pit repeatedly
Make, very effort, have great demand for man power and material.
The common method that must find crude oil gathering pipelines frozen block point can be mainly divided into two major classes at present, and one kind is experience
Method, by having there is experience, one by one investigate pipeline reducing at, low-lying place, past easily freeze locate etc..But this method causes to stop well
Time is grown, and manpower expends very big, heavy workload, has seriously affected the normal production run work in oil field.Two classes are by each
The metering method of determining and calculating of class sensor, mainly common are oiling pressure testing method, ess-strain method, discharge oil process, partial pressure method, theoretical value
It is worth analytic approach etc..
Oiling pressure testing method is suitable for completely plugged processed oil pipeline.This method regards plugging point with pipeline one end as closed
Container, to during the closed container oiling, using injection flow and the relation of pressure change, calculates containment vessel volume, so that really
Determine frozen block point position.It is more to pipeline requirements but this method requires frozen block point completely plugged, it is more to be not suitable with situation.
Ess-strain method need to be to carrying out excavation operation at pipeline survey.To blocking pipeline pressurization, sensor and strain are used
Instrument carries out the detection of plugging point.Ice, which blocks up position monitor instrument, to be designed based on ess-strain principle, is added and subtracted characteristic using electric bridge, is obtained
The deformation data of its measuring point is obtained, the relative position of measurement point and plugging point is judged by deformation data, then using gold
Segmentation repeatedly sounds out point principle positioning and blocks section, so as to judge that ice blocks up position a little.Then this method has one disadvantage in that needs
Positioning is repeatedly explored, therefore in buried section of pipeline, it is necessary to excavate frozen soil layer repeatedly, workload is larger.
Discharge oil process is drained the oil release repeatedly first, by oil volume compress (expansion) formula calculate it is thick to blocking section
Slightly position, stifled point range is narrowed down within 1000m.Then block up in the ice calculated and a little taken respectively in the range of upper and lower each 1000m
Optimum seeking method excavate test pit and drilling and drains the oil multiple exploration, reduces the scope of the stifled point of prediction.Finally when approaching ice and blocking up,
The accurate location that macropore determines stifled point with reinforcing bar inspecting hole is bored on pipeline, then carries out unimpeded operation.We can from description
It is also required to excavate deep-buried pipeline repeatedly to this method, workload is larger.
Partial pressure method blocks up situation for detecting natural gas line ice.This method is based on thermodynamic principles and fluid mass conservation is former
Reason, it is necessary to the tank of a known volume size, using this, oneself knows that the tank of volume comes out a partial pressure part in ice blocked pipeline,
Accurately measure the temperature and pressure changing value blocked before and after pipeline section partial pressure, it is possible to ice blocking position is obtained by calculation.But should
Method is only limitted to natural gas line, and pendulous frequency is related with natural gas tube line length and diameter, such as 2Km
The pipeline of 150mm needs measurement 8 times, could obtain more satisfied positioning accuracy.
Therefore need to design a kind of collection petroleum pipeline frozen block point position diagnosis easy to operate, cost is low, positioning accuracy is high
System, the reference information for formulating unimpeded plan is provided for manager, and timely purging line blocks, recovers normal conveying, reduce by
Manpower and materials loss in stopping transportation caused by blocking and unimpeded work just seems very necessary.
The content of the invention
A kind of the shortcomings that it is an object of the invention to overcome the above-mentioned prior art, there is provided collection oil transportation based on transient model
Pipeline frozen block point position diagnostic system, the system can realize the position diagnosis of collection petroleum pipeline frozen block point, and with positioning
The characteristics of precision is high, cost is low and easy to operate.
To reach above-mentioned purpose, the collection petroleum pipeline frozen block point position diagnostic system of the present invention based on transient model
Unit is excited including computer, for applying the transient state of pressure wave in collection petroleum pipeline, is supervised for detecting on collection petroleum pipeline
The pressure acquisition unit of pressure signal and the temperature for detecting temperature information at monitoring point on collection petroleum pipeline are adopted at measuring point
Collect unit, wherein, the output terminal of temperature collecting cell and the output terminal of pressure acquisition unit are connected with computer.
Transient state excitation unit includes compressor, portable pressure wave producer and connection valve, wherein, compressor and just
The control terminal for taking formula pressure wave generator is connected, and the output terminal of portable pressure wave producer is through connection valve and collection petroleum pipeline
It is connected, liquid is housed in the collection petroleum pipeline.
Computer includes denoising module, wavelet transformation module, singular point identification module, characteristic time identification module and blocking
Point position computation module, wherein, the output terminal of pressure sensor is identified through denoising module, wavelet transformation module, singular point successively
Module and characteristic time identification module are connected with plugging point position computation module.
Temperature collecting cell and pressure acquisition unit are connected by optical fiber or wireless communication module with computer.
Wireless communication module is wireless bridge, GPRS module or 4G modules.
The pressure acquisition unit includes pressure sensor, data acquisition and control module and memory, wherein, pressure sensing
The output terminal of device is connected with the input terminal of data acquisition and control module, the output terminal of data acquisition and control module and memory and
Computer is connected.
The invention has the advantages that：
Collection petroleum pipeline frozen block point position diagnostic system of the present invention based on transient model leads in concrete operations
Cross transient state excitation unit and produce pressure wave, and the pressure wave is put on and is treated in diagnosis collection petroleum pipeline, when pressure wave passes through
When at monitoring point, then there is a singular point in the pressure signal of pressure sensor detection, and pressure wave at blocking through reflecting, Ran Houzai
During through monitoring point, there is another singular point in the pressure signal of pressure sensor detection, and computer can be according to two singular points
Between time difference the distance between calculate at blocking with monitoring point, easy to operate, positioning accuracy is higher, and cost is low, energy
Enough exceptions for finding pipeline performance in time, avoid artificially finding plugging point, avoid excavating frozen soil layer repeatedly in severe cold winter, reduce
Employee work intensity, reduces due to stopping well and shutdown time caused by pipeline frozen block, improves fault reaction speed and oil field operation
Efficiency.
Brief description of the drawings
Fig. 1 is the principle of the present invention figure；
Fig. 2 is the structure diagram that transient state excites unit 1 in the present invention；
Fig. 3 is the structure diagram of pressure acquisition unit 2 in the present invention.
Wherein, 1 it is transient state excitation unit, 2 be pressure acquisition unit, 3 be computer, 4 be compressor, 5 is portable pressure
Wave generator, 6 be connection valve, 7 be pressure sensor, 8 be data acquisition and control module, 9 be memory.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, the collection petroleum pipeline frozen block point position diagnostic system of the present invention based on transient model includes meter
Calculation machine 3, the transient state excitation unit 1 for applying pressure wave in collection petroleum pipeline, the monitoring point on detection collection petroleum pipeline
Locate the pressure acquisition unit 2 of pressure signal and the temperature acquisition list for detecting temperature information at monitoring point on collection petroleum pipeline
Member, wherein, the output terminal of temperature collecting cell and the output terminal of pressure acquisition unit 2 are connected with computer 3.
The transient state excitation unit 1 includes compressor 4, portable pressure wave producer 5 and connection valve 6, wherein, compressor
4 are connected with the control terminal of portable pressure wave producer 5, and the output terminal of portable pressure wave producer 5 is through connection valve 6 and collection
Petroleum pipeline is connected, and liquid is housed in the collection petroleum pipeline.
Temperature collecting cell and pressure acquisition unit 2 are connected by optical fiber or wireless communication module with computer 3；Nothing
Line communication module is wireless bridge, GPRS module or 4G modules.
The pressure acquisition unit 2 includes pressure sensor 7, data acquisition and control module 8 and memory 9, wherein, pressure
The output terminal of sensor 7 is connected with the input terminal of data acquisition and control module 8, the output terminal of data acquisition and control module 8 with
Memory 9 and computer 3 are connected.
The present invention specific work process be：
Compressor 4 carries out pressure adjusting to portable pressure wave producer 5, and portable pressure wave producer 5 is being waited to diagnose
Collect and apply pressure wave in the liquid in petroleum pipeline, make pressure wave treat to propagate in diagnosis collection petroleum pipeline, the pressure wave passes
When being delivered at blocking, then reflect, pressure sensor 7 and temperature sensor are by the temperature signal and pressure of the monitoring point collected
Force signal is sent into computer 3, and computer 3 collects pressure signal according to pressure sensor 7 and draws pressure oscillation curve,
And the two neighboring singular point on pressure oscillation curve is obtained, further according to the time difference between two neighboring singular point and pressure wave
Spread speed calculate spacing between monitoring point at blocking, realize the positioning of plugging point, relevant operation personnel are according to diagnosis
As a result, carrying out site inspection and troubleshooting, and the operating mode after troubleshooting is fed back, increased so as to fulfill machine learning
Sample storehouse, forms closed loop management.It should be noted that when pressure-wave emission is to monitoring point, occur one on pressure oscillation curve
It is unusual to there is another after being reflected at blocking when traveling to monitoring point again, on pressure oscillation curve for a singular point, pressure wave
Point.
Embodiment one
Computer 3 includes denoising module, wavelet transformation module, singular point identification module, characteristic time identification module and blocks up
Plug point position computation module, wherein, the output terminal of pressure sensor 7 is known through denoising module, wavelet transformation module, singular point successively
Other module and characteristic time identification module are connected with plugging point position computation module, and in concrete operations, denoising module is to pressure
Force signal carries out denoising, retransmits into wavelet transformation module, and wavelet transformation module carries out wavelet transformation to the signal after denoising,
Then the modulus maximum point of wavelet transformation under each scale is calculated by unusual point module, then according to wavelet transformation under each scale
Film maximum point obtains some wavelet transform modulus, then carries out on wavelet transform modulus determining for two singular point positions, then root
According to the time difference between two singular points of location determination of two singular points, then further according to the time difference between two singular points
Calculate the spacing between monitoring point at blocking.
Embodiment two
Computer 3 directly displays pressure signal, then can search out two singular values on pressure signal curve, then
The distance between plugging point and monitoring point are calculated further according to the time difference between two singular values on pressure oscillation curve.
Claims (6)
1. a kind of collection petroleum pipeline frozen block point position diagnostic system based on transient model, it is characterised in that including computer
(3), for applying the transient state excitation unit (1) of pressure wave in collection petroleum pipeline, for detecting monitoring point on collection petroleum pipeline
Locate the pressure acquisition unit (2) of pressure signal and the temperature acquisition for detecting temperature information at monitoring point on collection petroleum pipeline
Unit, wherein, the output terminal of the output terminal and pressure acquisition unit (2) of temperature collecting cell is connected with computer (3).
2. the collection petroleum pipeline frozen block point position diagnostic system according to claim 1 based on transient model, its feature exist
In, the transient state excitation unit (1) includes compressor (4), portable pressure wave producer (5) and connection valve (6), wherein, pressure
Contracting machine (4) is connected with the control terminal of portable pressure wave producer (5), the output terminal warp of portable pressure wave producer (5)
Connection valve (6) is connected with collection petroleum pipeline, and liquid is housed in the collection petroleum pipeline.
3. the collection petroleum pipeline frozen block point position diagnostic system according to claim 1 based on transient model, its feature exist
In computer (3) includes denoising module, wavelet transformation module, singular point identification module, characteristic time identification module and plugging point
Position computation module, wherein, the output terminal of pressure sensor (7) is identified through denoising module, wavelet transformation module, singular point successively
Module and characteristic time identification module are connected with plugging point position computation module.
4. the collection petroleum pipeline frozen block point position diagnostic system according to claim 1 based on transient model, its feature exist
In temperature collecting cell and pressure acquisition unit (2) are connected by optical fiber or wireless communication module with computer (3).
5. the collection petroleum pipeline frozen block point position diagnostic system according to claim 4 based on transient model, its feature exist
In wireless communication module be wireless bridge, GPRS module or 4G modules.
6. the collection petroleum pipeline frozen block point position diagnostic system according to claim 1 based on transient model, its feature exist
In, the pressure acquisition unit (2) includes pressure sensor (7), data acquisition and control module (8) and memory (9), wherein,
The output terminal of pressure sensor (7) is connected with the input terminal of data acquisition and control module (8), data acquisition and control module (8)
Output terminal be connected with memory (9) and computer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711105868.8A CN107940241A (en) | 2017-11-10 | 2017-11-10 | Transient model-based frozen point position diagnosis system for gathering and transportation oil pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711105868.8A CN107940241A (en) | 2017-11-10 | 2017-11-10 | Transient model-based frozen point position diagnosis system for gathering and transportation oil pipeline |
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| CN107940241A true CN107940241A (en) | 2018-04-20 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711105868.8A Pending CN107940241A (en) | 2017-11-10 | 2017-11-10 | Transient model-based frozen point position diagnosis system for gathering and transportation oil pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109578816A (en) * | 2018-12-14 | 2019-04-05 | 中冶京诚工程技术有限公司 | Water supply pipe network pipe burst detection method and device, and control method and device |
| CN109780449A (en) * | 2018-12-26 | 2019-05-21 | 西安交通大学 | A kind of apparatus and method detecting natural gas line ice blocking position |
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Application publication date: 20180420 |