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CN115539014B - Pipeline sand-containing monitoring device with double probes - Google Patents

Pipeline sand-containing monitoring device with double probes Download PDF

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Publication number
CN115539014B
CN115539014B CN202211095223.1A CN202211095223A CN115539014B CN 115539014 B CN115539014 B CN 115539014B CN 202211095223 A CN202211095223 A CN 202211095223A CN 115539014 B CN115539014 B CN 115539014B
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sand
wave signal
pipeline
piezoelectric transducer
sound wave
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CN115539014A (en
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高凌霄
蒋晓斌
高海宾
刘海超
曲杰
苑世宁
韩雪艳
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CNOOC Tianjin Pipeline Engineering Technology Co Ltd
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CNOOC Tianjin Pipeline Engineering Technology Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/006—Detection of corrosion or deposition of substances

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  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

本发明公开了一种具有双探头的管道含砂监测装置，包括；电源模块、显示终端、分析主机、至少一个压电换能器，利用弯头压电换能器获取包括环境噪声信号和砂粒与管道内壁碰撞产生的第一声波信号，利用直管压电换能器获取环境噪声引起的第二声波信号。通过分析主机对第一声波信号和第二声波信号进行处理和分析，最终通过显示终端显示管道含砂情况。采用本方法解决了单探头含砂监测装置受环境因素干扰产生的易漏报、误报的问题。

The present invention discloses a pipeline sand content monitoring device with dual probes, including: a power module, a display terminal, an analysis host, and at least one piezoelectric transducer. The elbow piezoelectric transducer is used to obtain a first sound wave signal including an environmental noise signal and the collision of sand particles with the inner wall of the pipeline, and the straight tube piezoelectric transducer is used to obtain a second sound wave signal caused by the environmental noise. The first sound wave signal and the second sound wave signal are processed and analyzed by the analysis host, and finally the sand content of the pipeline is displayed through the display terminal. The method solves the problem of easy omission and false alarm caused by the interference of environmental factors in the single-probe sand content monitoring device.

Description

Pipeline sand-containing monitoring device with double probes
Technical Field
The invention relates to a sand-containing monitoring and detecting device for an oil-gas field pipeline, which is particularly suitable for a real-time monitoring device for the sand-containing condition of an offshore oil-gas field wellhead pipeline.
Background
In the exploitation process of oil and gas wells, sand production is a common phenomenon, is also one of the difficulties in oilfield exploitation, and especially in the middle and later stages of oilfield exploitation, the reservoir framework is also greatly damaged due to long-term water injection or gas injection exploitation, so that the sand production of the oil well is caused.
Sand-containing monitoring devices based on acoustic principles used in current offshore oil and gas fields generally have the problem of false alarm and missing report due to the influence of noise such as platform vibration, offshore stormy waves and manual operation. Meanwhile, when the environment is changed, the parameters of the monitoring device need to be reset, and because the equipment has strong specialization, manufacturers need to debug the offshore platform, and the time is long. Because the sand-containing condition of the pipeline cannot be accurately monitored, the sand prevention and sand removal lag of the offshore platform is caused, and the production of offshore oil and gas fields is greatly influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the pipeline sand-containing monitoring device with the double probes, which can not generate sand content missing report and false report.
The aim of the invention is achieved by the following technical scheme.
The invention discloses a sand-containing monitoring device for a pipeline with double probes, which is characterized in that an elbow piezoelectric transducer is fixed at an elbow of the pipeline, at least one straight pipe piezoelectric transducer is fixed on a straight pipe section of the pipeline at intervals, the elbow piezoelectric transducer is used for acquiring a first sound wave signal generated by collision of an environmental noise signal and sand grains with the inner wall of the pipeline, the straight pipe piezoelectric transducer is used for acquiring a second sound wave signal caused by the environmental noise, the distance between the straight pipe piezoelectric transducer and the elbow piezoelectric transducer is 1-2m, the elbow piezoelectric transducer and the straight pipe piezoelectric transducer are respectively connected with an analysis host through signal wires, the first sound wave signal and the second sound wave signal are respectively transmitted to the analysis host, and the analysis host executes the following steps:
Judging whether the number of the second acoustic signals is larger than 1, if so, comparing every two waveforms of the second acoustic signals, if the waveforms of the second acoustic signals are consistent, judging that the straight pipe piezoelectric transducers are installed correctly, and then executing a second step, otherwise, adjusting the mutual positions of the straight pipe piezoelectric transducers or replacing the straight pipe piezoelectric transducers until the waveforms of the second acoustic signals are consistent, and then executing the second step;
Comparing the waveforms of the first waveform signal and the second waveform signal, if the waveforms are consistent, judging that no sand exists in the pipeline, otherwise, judging that sand exists in the pipeline, and then executing the next step;
Thirdly, calculating collision energy of sand particles in the pipeline according to an amplitude difference value between the first acoustic signal and the second acoustic signal for a wave band with inconsistent waveforms of the first waveform signal and the second acoustic signal, calculating the mass of the sand particles according to the fluid flow rate of the pipeline, and performing sand particle mass accumulation calculation in a period of time to obtain total mass of the sand particles, wherein the total mass of the sand particles is the total sand content in the period of time;
The display terminal is connected with the analysis host computer through a signal wire and is used for outputting a first acoustic signal waveform, a second acoustic signal waveform and a judging result of whether sand is contained or not, and if the sand is contained, the total mass of sand is displayed according to the calculating result of the third step.
Compared with the prior art, the invention has the beneficial effects that:
(1) The technical value is that the technical level of sand-containing monitoring of the offshore oil and gas pipeline of an enterprise is improved, a solution is provided for the problem of false alarm missing in sand-containing monitoring, and the defect of the existing sand-containing monitoring equipment is overcome.
(2) The economic value is that the sand content of the oil field extract gradually rises along with the entering of the offshore oil field into the middle and later stages and the exploitation of thick oil, and the sand content monitoring equipment is mainly applied to the Bohai sea oil field and the south sea oil field, so that the large-scale application can be realized, and the expected application times are more than 100.
(3) The device has the application value that the problem of sand production of current offshore oil and gas fields is more and more, and the device can be used for monitoring sand content of pipelines and providing data support for effective sand prevention and sand control of offshore platforms.
Drawings
FIG. 1 is a block diagram of a dual probe pipe sand monitoring device of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
As shown in figure 1, in the pipeline sand-containing monitoring device with the double probes, an elbow piezoelectric transducer 4 is fixed at an elbow of a pipeline 1, at least one straight pipe piezoelectric transducer 6 is fixed on a straight pipe section of the pipeline at intervals, the straight pipe piezoelectric transducer 6 and the elbow piezoelectric transducer 4 can be fixed on the pipeline 1 by adopting stainless steel hoops, and the straight pipe piezoelectric transducer 6 and the elbow piezoelectric transducer 4 are all available in the market by adopting the existing piezoelectric transducers.
The elbow piezoelectric transducer 4 is used for acquiring a first sound wave signal 3 generated by collision of an environmental noise signal and sand grains with the inner wall of a pipeline, and the straight pipe piezoelectric transducer 6 is used for acquiring a second sound wave signal caused by the environmental noise, wherein the sand grain motion track is shown as 2.
The distance between the straight pipe piezoelectric transducer 6 and the elbow piezoelectric transducer 4 is 1-2m, so that sand grains in the pipeline can impact the inner wall of the elbow of the pipeline, and after being acquired by the elbow piezoelectric transducer 4, sound wave signals are attenuated to 0 when being transmitted to the area of the straight pipe piezoelectric transducer 6. At this time, the signals acquired by the elbow piezoelectric transducer 4 include an environmental noise signal and an acoustic wave signal of collision of sand grains with the inner wall of the pipeline, and the straight pipe piezoelectric transducer 6 acquires only the environmental noise signal.
The elbow piezoelectric transducer 4 and the straight pipe piezoelectric transducer 6 are respectively connected with an analysis host through signal wires, the first acoustic wave signal and the second acoustic wave signal are respectively transmitted to the analysis host, and the analysis host executes the following steps:
Judging whether the number of the second acoustic signals is larger than 1, if so, comparing every two waveforms of the second acoustic signals, if the waveforms of the second acoustic signals are consistent, judging that the straight pipe piezoelectric transducer 6 is installed correctly, and then executing the second step, otherwise, adjusting the mutual positions of the straight pipe piezoelectric transducers or replacing the straight pipe piezoelectric transducers until the waveforms of the second acoustic signals are consistent, and then executing the second step;
Comparing the waveforms of the first waveform signal and the second waveform signal, if the waveforms are consistent, judging that no sand exists in the pipeline, otherwise, judging that sand exists in the pipeline, and then executing the next step;
thirdly, calculating the collision energy of sand particles in the pipeline according to the amplitude difference between the first acoustic signal and the second acoustic signal for the wave bands where the waveforms of the first waveform signal and the second acoustic signal are inconsistent (a calculation formula is shown in a formula 1 below), calculating the mass of sand particles according to the flow rate of the fluid in the pipeline (a calculation formula is shown in a formula 3), and performing sand particle mass accumulation calculation in a period of time to obtain the total mass of sand particles, wherein the total mass of sand particles is the total sand content in the period of time.
(1)
Wherein: is the collision energy of the ith sand grain, The difference in amplitude between the first acoustic signal and the second acoustic signal at the ith grit is the voltage difference.The conversion coefficient between the amplitude difference value between the first acoustic wave signal and the second acoustic wave signal and the collision energy is an empirical value, and the value is obtained through a laboratory sand-containing monitoring test, namely in a laboratory environment, the collision energy of sand particles can be obtained according to the movement speed of the sand particles by adopting a formula 3, and the amplitude difference value between the first acoustic wave signal and the second acoustic wave signal can be obtained through a piezoelectric transducer, namely the value can be reversely deduced through a formula 2,Can be measured in advance. Namely:
(2)
(3)
Wherein: is the collision energy of the ith sand grain, The intrinsic parameters of the piezoelectric transducer are empirical values, the value is usually 0.8,And v is the fluid velocity for the mass of the ith grit.
The display terminal is connected with the analysis host computer through a signal wire and is used for outputting a first acoustic signal waveform, a second acoustic signal waveform and a judging result of whether sand is contained or not, and if the sand is contained, the total mass of sand is displayed according to the calculating result of the third step.
The analysis host and the display terminal are powered by the power supply module, and the power supply module is used for supplying 24V power for the analysis host and the display terminal.
Although the function and operation of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to the above-described specific functions and operations, but the above-described specific embodiments are merely illustrative, not restrictive, and many forms can be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are included in the protection of the present invention.

Claims (1)

1.一种具有双探头的管道含砂监测装置的使用方法，其特征在于：在管道的弯头处固定有弯头压电换能器，在管道的直管段上分别间隔固定有至少一个直管压电换能器，所述的弯头压电换能器用于获取包括环境噪声信号和砂粒与管道内壁碰撞产生的第一声波信号，直管压电换能器用于获取环境噪声引起的第二声波信号；所述的直管压电换能器与弯头压电换能器的距离为1-2m；所述的弯头压电换能器和直管压电换能器分别通过信号线与分析主机相连，所述的第一声波信号和第二声波信号分别传输至分析主机，所述的分析主机执行以下步骤：1. A method for using a pipeline sand monitoring device with dual probes, characterized in that: an elbow piezoelectric transducer is fixed at the elbow of the pipeline, and at least one straight tube piezoelectric transducer is fixed at intervals on the straight pipe section of the pipeline, the elbow piezoelectric transducer is used to obtain a first sound wave signal including an environmental noise signal and a collision between sand particles and the inner wall of the pipeline, and the straight tube piezoelectric transducer is used to obtain a second sound wave signal caused by the environmental noise; the distance between the straight tube piezoelectric transducer and the elbow piezoelectric transducer is 1-2m; the elbow piezoelectric transducer and the straight tube piezoelectric transducer are respectively connected to an analysis host through signal lines, the first sound wave signal and the second sound wave signal are respectively transmitted to the analysis host, and the analysis host performs the following steps: 第一步，判断第二声波信号数量是否大于1，若是，则将第二声波信号波形两两相互进行对比，若第二声波信号各个波形一致，则判定直管压电换能器安装正确，然后执行第二步；否则，调整直管压电换能器相互位置或更换直管压电换能器直至各个第二声波信号的波形一致为止，然后执行第二步；如果判断第二声波信号数量为，则执行第二步；The first step is to determine whether the number of second acoustic wave signals is greater than 1. If so, the waveforms of the second acoustic wave signals are compared with each other. If the waveforms of the second acoustic wave signals are consistent, it is determined that the straight tube piezoelectric transducer is installed correctly, and then the second step is executed; otherwise, the straight tube piezoelectric transducers are adjusted relative to each other or replaced until the waveforms of the second acoustic wave signals are consistent, and then the second step is executed; if it is determined that the number of second acoustic wave signals is, the second step is executed; 第二步，将第一波形信号与第二声波信号的波形进行对比，若两者波形一致，则判定无砂粒在管道内；否则，判定管道内存在砂粒，然后执行下一步；The second step is to compare the waveforms of the first waveform signal and the second sound wave signal. If the waveforms of the two are consistent, it is determined that there is no sand in the pipeline; otherwise, it is determined that there are sand in the pipeline, and then the next step is executed; 第三步，对于第一波形信号与第二声波信号的波形不一致的波段依据第一声波信号和第二声波信号之间的波幅差值计算管道内砂粒碰撞能量，并根据管道流体流速利用波幅差值计算管道内砂粒碰撞能量公式反算砂粒的质量，并在一段时间内进行砂粒质量累积计算得到砂粒总质量，砂粒总质量即为该段时间内的含砂总量；The third step is to calculate the collision energy of the sand particles in the pipeline according to the amplitude difference between the first sound wave signal and the second sound wave signal for the wave band where the waveforms of the first sound wave signal and the second sound wave signal are inconsistent, and the mass of the sand particles is inversely calculated according to the flow rate of the pipeline fluid using the formula for calculating the collision energy of the sand particles in the pipeline using the amplitude difference, and the total mass of the sand particles is obtained by accumulating the mass of the sand particles over a period of time, and the total mass of the sand particles is the total amount of sand contained in the period of time; 波幅差值计算管道内砂粒碰撞能量公式为：The formula for calculating the collision energy of sand particles in the pipeline using the amplitude difference is: Si＝C1*ΔAi S i =C 1 *ΔA i 式中：Si为第i个砂粒的碰撞能量，ΔAi为在第i个砂粒时的第一声波信号和第二声波信号之间的波幅差值，为电压差值，C1为第一声波信号和第二声波信号之间的波幅差值与碰撞能量之间转换系数，C2为压电换能器固有参数，mi为第i个砂粒的质量，v为流体速度；Where: S i is the collision energy of the i-th sand particle, ΔA i is the amplitude difference between the first acoustic wave signal and the second acoustic wave signal at the i-th sand particle, is the voltage difference, C 1 is the conversion coefficient between the amplitude difference between the first acoustic wave signal and the second acoustic wave signal and the collision energy, C 2 is the inherent parameter of the piezoelectric transducer, m i is the mass of the i-th sand particle, and v is the fluid velocity; 第四步，显示终端通过信号线与分析主机相连，所述显示终端输出第一声波信号波形和第二声波信号波形以及是否含砂的判断结果，如果含砂则依据上述第三步计算结果，显示砂粒总质量。In the fourth step, the display terminal is connected to the analysis host through a signal line, and the display terminal outputs the first sound wave signal waveform and the second sound wave signal waveform as well as the judgment result of whether sand is contained. If sand is contained, the total mass of sand particles is displayed according to the calculation result of the third step above.
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