CN111255437A - Detection device and method - Google Patents
Detection device and method Download PDFInfo
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- CN111255437A CN111255437A CN202010076041.4A CN202010076041A CN111255437A CN 111255437 A CN111255437 A CN 111255437A CN 202010076041 A CN202010076041 A CN 202010076041A CN 111255437 A CN111255437 A CN 111255437A
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- transducer
- transmitting transducer
- dipole transmitting
- detection device
- excitation
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Abstract
The embodiment of the invention discloses a detection device, which is applied to detecting a dipole transmitting transducer and comprises: an acoustic transmission medium, a receiving transducer; wherein: the acoustic transmission medium is connected with the dipole transmitting transducer and the receiving transducer and is used for transmitting the acoustic signal excited by the dipole transmitting transducer to the receiving transducer; and the receiving transducer is used for receiving the sound wave signals transmitted by the sound wave transmission medium and is connected with the oscilloscope to display the waveform. By the scheme of the invention, the dipole transmitting transducer is simply, conveniently and accurately detected.
Description
Technical Field
The invention relates to the field of well logging, in particular to a detection device and a detection method.
Background
In acoustic logging, in order to accurately measure the transverse wave velocity of a soft stratum, a dipole transmitting transducer is generally installed on an acoustic logging instrument, bending waves are excited in a borehole through two vibration modes with opposite polarities of the transducer, and the accurate transverse wave velocity of the stratum is obtained according to the principle that the bending wave velocity is the same as the transverse wave velocity of the stratum at low frequency. Meanwhile, when the cross dipole acoustic logging method is used for measuring the size of the stratum anisotropy, the accuracy of the size of the stratum anisotropy is influenced by the accuracy of the installation of the positive electrode and the negative electrode of the cross dipole transmitting transducer, so that the accuracy of the installation of the positive electrode and the negative electrode of the dipole transmitting transducer is extremely important.
In the research and development and manufacturing process of a dipole or orthogonal dipole acoustic logging instrument, the phenomenon that the anode and the cathode are connected reversely easily occurs when the anode and the cathode of a dipole transducer are connected, and bending waves cannot be excited. At present, the detection of whether the anode and the cathode of the dipole transmitting transducer are reversely connected generally adopts the method of disassembling the instrument for line detection, and because the disassembly and the assembly of the instrument are complex, the workload is large and the labor cost is high by using the detection method. Therefore, it is desirable to design a detection device that can simply, conveniently and accurately detect whether the dipole transmitting transducer is installed correctly.
Disclosure of Invention
In order to solve the technical problem, the invention provides a detection device, which can simply, conveniently and effectively detect whether a dipole transmitting transducer is installed correctly.
In order to achieve the object of the present invention, the present invention provides a detection apparatus for detecting a dipole transmission transducer, the detection apparatus comprising: an acoustic transmission medium, a receiving transducer; wherein:
the acoustic wave transmission medium is connected with the dipole transmitting transducer and the receiving transducer and is used for propagating the acoustic wave signals excited by the dipole transmitting transducer to the receiving transducer;
and the receiving transducer is used for receiving the sound wave signals transmitted by the sound wave transmission medium and is connected with an oscilloscope to display waveforms.
In an exemplary embodiment, the acoustic transmission medium is a rubber rod.
In an exemplary embodiment, the detection device further comprises: a clamper.
In an exemplary embodiment, one end of the rubber rod is provided with a thread; the rubber rod is connected and fixed with the holder through threads.
In an exemplary embodiment, the other end of the rubber rod is in coupling contact with a bladder of the dipole transmitting transducer.
In an exemplary embodiment, one end of the rubber rod and the receiving transducer are coupled by a couplant.
In order to solve the above problem, the present invention further provides a detection method, including:
detecting each direction of the dipole transmitting transducer; the detecting operation includes:
connecting a detection apparatus according to any one of the above embodiments to the detected orientation of the dipole transmitting transducer;
acquiring the acoustic wave signal of the dipole transmitting transducer in the direction, and displaying the waveform;
and determining the excitation mode of the orientation according to the characteristics of the displayed waveform, wherein the excitation mode comprises positive excitation or negative excitation.
In an exemplary embodiment, the excitation pattern for determining the orientation based on the characteristics of the displayed waveform includes:
the excitation pattern of the azimuth is determined according to the phase of the head wave,
judging that the head wave is excited by the positive pole when the phase of the head wave is the positive phase;
and judging that the excitation is negative excitation when the phase of the head wave is negative.
In an exemplary embodiment, before the detecting operation is performed for each position of the dipole transmitting transducer, the method further includes:
fixing one end of a sound wave propagation medium in the detection device;
when detection device includes the holder, when the sound wave propagation medium is the rubber stick that one end set up the screw thread, fix the one end of the sound wave propagation medium in the detection device and include:
and connecting and fixing one end of the sound wave propagation medium with a clamp through threads.
In an exemplary embodiment, coupling a detection device to the detected orientation of the dipole transmitting transducer comprises: and the other end of the sound wave propagation medium in the detection device is in coupling contact with the leather bag of the dipole transmitting transducer.
Compared with the prior art, the invention provides a detection device, which is applied to detecting a dipole transmitting transducer and comprises: an acoustic transmission medium, a receiving transducer; wherein: the acoustic transmission medium is connected with the dipole transmitting transducer and the receiving transducer and is used for propagating the acoustic signal excited by the dipole transmitting transducer to the receiving transducer; the receiving transducer is used for receiving the sound wave signals transmitted by the sound wave transmission medium and is connected with the oscilloscope to display the waveform. By the scheme of the invention, whether the dipole transmitting transducer is installed correctly is simply, conveniently and accurately detected.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic view of a detecting apparatus according to an embodiment of the present invention;
FIG. 2 is a further schematic view of a detecting device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a detecting device according to a first embodiment of the present invention;
FIG. 4 is a schematic diagram of a prior art cross-dipole transmitting transducer;
fig. 5 is a flowchart of a detection method according to a first embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Example one
Fig. 1 is a schematic structural view of a detecting apparatus of the present invention, according to which a detecting apparatus of the present invention is applied to detecting a dipole transmission transducer, the detecting apparatus comprising: an acoustic wave transmission medium 11, a receiving transducer 12; wherein:
the detection device is applied to detecting a dipole transmitting transducer, and the dipole transmitting transducer can be a dipole generating transducer of an acoustic logging instrument, and can also be a dipole transmitting transducer in other equipment.
The acoustic wave transmission medium 11 is connected to the dipole transmitting transducer and the receiving transducer, and is configured to propagate an acoustic wave signal excited by the dipole transmitting transducer to the receiving transducer. In this embodiment, an acoustic transmission medium connects a dipole transmitting transducer and the receiving transducer.
And the receiving transducer 12 is used for receiving the acoustic wave signals transmitted by the acoustic wave transmission medium and is connected with an oscilloscope to display waveforms.
In an exemplary embodiment, the acoustic wave transmission medium 11 may be a rubber rod, and the acoustic impedance of the rubber rod is closer to the acoustic impedance value of an instrument epithelial sac based on the rubber rod, so that the acoustic wave energy transmitted from the dipole transmitting transducer to the rubber rod through the epithelial sac is stronger, the acoustic signal received by the receiving transducer is stronger, and the first wave phase discrimination is clearer. The acoustic transmission medium 11 may also be made of metal or PVC. As shown in FIG. 2, the detecting device can design the sound wave transmission medium 11 as a cylindrical rubber rod with a diameter of 50mm and a length of 500mm according to actual needs.
In an exemplary embodiment, the detection apparatus further includes: a holder; the holder can hold a receiving transducer 12 inside, with the holder and the receiving transducer 12 as a whole; the holder may also be provided separately. The clamp holder can be internally provided with a probe, and the sound wave signals transmitted by the sound wave transmission medium can be displayed on an oscilloscope in a waveform mode through the connecting probe.
In an exemplary embodiment, one end of the rubber rod is provided with a thread; the rubber rod is connected and fixed with the holder through threads. And after the rubber rod is fixedly connected with the holder through threads, the rubber rod is coupled with the receiving transducer through a coupling agent.
In an exemplary embodiment, the other end of the rubber rod is in coupling contact with a bladder of the dipole transmitting transducer. As shown in fig. 3, one end of the rubber rod is coupled with the receiving transducer through a coupling agent, and the other end of the rubber rod is in coupling contact with the leather bag of the dipole transmitting transducer. In this embodiment, the rubber stick other end and the leather bag of the dipole transmitting transducer in the acoustic logging instrument are coupled and contacted to adopt the couplant, and the rubber stick other end and the leather bag of the dipole transmitting transducer are more attached to each other through the couplant, so that the energy of the acoustic signals can be better transmitted and the rubber stick is transmitted into the leather bag.
Example two
In order to achieve the object of the present invention, the present invention further provides a detection method, as shown in fig. 5, which performs a detection operation separately for each azimuth of the dipole transmission transducer; the detection operation comprises steps 500-502:
In this embodiment, the detection apparatus may be the detection apparatus in one of the above embodiments, where the dipole transmitting transducer is as shown in fig. 4, the dipole transmitting transducer has multiple orientations, and needs to perform separate detection for each orientation, and after the detection of the dipole transmitting transducer is completed, the detection of the dipole transmitting transducer of the entire acoustic logging tool is further implemented.
The detection device may include: an acoustic transmission medium 11 and a receiving transducer 12.
In an exemplary embodiment, one end of the acoustic wave propagation medium in the detection apparatus is fixed before the detection operation is performed for each orientation of the dipole transmission transducer, respectively; when detection device includes the holder, when the sound wave propagation medium is the rubber stick that one end set up the screw thread, fix the one end of the sound wave propagation medium in the detection device and include: and connecting and fixing one end of the sound wave propagation medium with a clamp through threads.
In an exemplary embodiment, coupling a detection device to a detected orientation of a dipole transmitting transducer comprises: and the other end of the sound wave propagation medium in the detection device is in coupling contact with the leather bag of the dipole transmitting transducer. In this embodiment, when the acoustic wave propagation medium is a rubber rod, a coupling agent such as vaseline or honey is uniformly applied between the other end of the rubber rod in the detection device and the leather bag of the dipole transmitting transducer in a certain direction in the dipole transmitting transducer for coupling contact, so as to ensure that the other end of the acoustic wave propagation medium is in close contact with the leather bag of the dipole transmitting transducer.
And 501, acquiring the acoustic wave signal of the dipole transmitting transducer in the direction, and displaying the waveform.
In this embodiment, when the acoustic logging tool is in operation, the frequency of the acoustic signal excited by the dipole transducer is 1.5KHz to 4KHz, and the excitation mode is as shown in fig. 4, one side emits an excitation positive sine wave and the other side emits an excitation negative sine wave in the X direction, that is, the two X direction emitting connection modes are completely opposite, and the Y direction is identical to the X direction emitting connection mode and the excitation mode. When the dipole transducer works, taking the excitation of an X positive electrode as an example, X + can excite a sine wave with positive phase of a head wave, the sound wave is received by a receiving transducer coupled with the other end of a sound wave propagation medium rubber rod in the detection device, a sound wave signal is converted into a voltage signal, and waveform display is carried out on an oscilloscope. The amplitude of the signal-to-noise wave can be adjusted according to the waveform of the received sound wave signal, so that the waveform can be displayed more clearly.
And 501, determining the excitation mode of the direction according to the characteristics of the displayed waveform, wherein the excitation mode comprises positive excitation or negative excitation.
In this embodiment, according to the principle of an acoustic signal excited by a dipole transducer when the acoustic logging instrument is in operation, an excitation mode of the azimuth is determined based on a waveform head wave phase characteristic displayed on an oscilloscope, where the excitation mode includes positive excitation or negative excitation.
In an exemplary embodiment, the excitation pattern for determining the orientation based on the characteristics of the displayed waveform includes: determining the excitation mode of the azimuth according to the phase of the head wave, and judging that the azimuth is positive excitation when the phase of the head wave is a positive phase; and judging that the excitation is negative excitation when the phase of the head wave is negative.
EXAMPLE III
In one exemplary embodiment, the detection of the dipole transmitting transducer by the detection apparatus is accomplished as follows:
step 1, coupling and contacting an acoustic wave propagation medium in the detection device with a transducer.
In the step, when the sound wave propagation medium in the detection device is a rubber rod, one end of the rubber rod is provided with a thread; and connecting and fixing the rubber rod with the holder through threads, and enabling the rubber rod to be in coupling contact with the receiving transducer to ensure that no gap exists on a contact surface. Wherein, a receiving transducer can be fixedly arranged in the holder, and the holder and the receiving transducer are integrated; the holder may also be provided separately.
And 2, electrifying the acoustic logging instrument to enable the dipole transmitting transducer to start working.
In this step, the dipole transmitting transducer starts to work, sends the acoustic wave signal to the receiving transducer through the acoustic wave transmission medium, receives the acoustic wave signal transmitted by the acoustic wave transmission medium, and is connected with the oscilloscope for waveform display. The holder on the receiving transducer can be internally provided with a probe, and the sound wave signal transmitted by the sound wave transmission medium can be displayed on an oscilloscope in a waveform mode through the connecting probe.
And 3, connecting the receiving transducer with an oscilloscope.
And 4, coupling and contacting the other end of the rubber rod with a leather bag of the dipole transmitting transducer in a certain direction.
In the step, coupling agents such as vaseline or honey are uniformly coated between the other end of the rubber rod and the leather bag at a certain position of the dipole transmitting transducer, so that the rubber rod and the leather bag are in close contact.
And 5, adjusting the signal-to-noise ratio and the amplitude of the received waveform on an oscilloscope.
And 6, determining the excitation mode of the direction according to the characteristics of the processed waveform, wherein the excitation mode comprises positive excitation or negative excitation.
In this step, determining the excitation pattern of the orientation based on the characteristics of the displayed waveform includes: determining the excitation mode of the azimuth according to the phase of the head wave, and judging that the azimuth is positive excitation when the phase of the head wave is a positive phase; and judging that the excitation is negative excitation when the phase of the head wave is negative.
And 7, after the detection operation is respectively completed for each direction of the dipole transmitting transducer, determining whether the installation of the dipole transmitting transducer is correct.
Through the steps of the invention, a simple, convenient and effective detection device for the acoustic logging instrument dipole generation transducer is realized. The device is convenient in actual operation, good in flexibility, high in universality, accurate in measuring result, small in workload and low in labor cost. The problem of need tear the instrument open among the prior art and detect is solved.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. A sensing device for sensing a dipole transmitting transducer, the sensing device comprising: an acoustic transmission medium, a receiving transducer; wherein:
the acoustic wave transmission medium is connected with the dipole transmitting transducer and the receiving transducer and is used for propagating the acoustic wave signals excited by the dipole transmitting transducer to the receiving transducer;
and the receiving transducer is used for receiving the sound wave signals transmitted by the sound wave transmission medium and is connected with an oscilloscope to display waveforms.
2. The detection device of claim 1, wherein the acoustic transmission medium is a rubber rod.
3. The detection device of claim 1, further comprising: a clamper.
4. The detection device according to claim 3, wherein one end of the rubber rod is provided with a thread;
the rubber rod is connected and fixed with the holder through threads.
5. The test device of claim 4, wherein the other end of the rubber rod is in coupling contact with a bladder of the dipole transmitting transducer.
6. The detecting device for detecting the rotation of a motor rotor as claimed in claim 5, wherein one end of the rubber rod and the receiving transducer are coupled and connected through a couplant.
7. A method of detection, the method comprising:
detecting each direction of the dipole transmitting transducer; the detecting operation includes:
connecting a detection device according to any one of claims 1-6 to an orientation of the dipole transmitting transducer detected;
acquiring the acoustic wave signal of the dipole transmitting transducer in the direction, and displaying the waveform;
and determining the excitation mode of the orientation according to the characteristics of the displayed waveform, wherein the excitation mode comprises positive excitation or negative excitation.
8. The detection method of claim 7, wherein determining the excitation pattern of the orientation based on the characteristics of the displayed waveform comprises:
the excitation pattern of the azimuth is determined according to the phase of the head wave,
judging that the head wave is excited by the positive pole when the phase of the head wave is the positive phase;
and judging that the excitation is negative excitation when the phase of the head wave is negative.
9. The method of claim 7, wherein prior to performing the respective sensing operations for each orientation of the dipole transmitting transducer, further comprising:
fixing one end of a sound wave propagation medium in the detection device;
when detection device includes the holder, when the sound wave propagation medium is the rubber stick that one end set up the screw thread, fix the one end of the sound wave propagation medium in the detection device and include:
and connecting and fixing one end of the sound wave propagation medium with a clamp through threads.
10. The method of claim 9, wherein said coupling a sensing device to the sensed orientation of the dipole transmitting transducer comprises:
and the other end of the sound wave propagation medium in the detection device is in coupling contact with the leather bag of the dipole transmitting transducer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010076041.4A CN111255437A (en) | 2020-01-23 | 2020-01-23 | Detection device and method |
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| CN202010076041.4A CN111255437A (en) | 2020-01-23 | 2020-01-23 | Detection device and method |
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| CN111255437A true CN111255437A (en) | 2020-06-09 |
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| CN202010076041.4A Pending CN111255437A (en) | 2020-01-23 | 2020-01-23 | Detection device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982557A (en) * | 2021-10-24 | 2022-01-28 | 武汉三江航天远方科技有限公司成都分公司 | Energy emission direction detection device and measurement method of dipole emission sensor |
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| US20050226098A1 (en) * | 2004-04-07 | 2005-10-13 | Baker Hughes Incorporated | Dynamic acoustic logging using a feedback loop |
| CN102918424A (en) * | 2010-06-03 | 2013-02-06 | 雪佛龙美国公司 | Device and method for generating a beam of acoustic energy from a borehole, and applications thereof |
| CN205786497U (en) * | 2016-06-02 | 2016-12-07 | 中国海洋石油总公司 | A kind of sound insulating structure experiment test device |
| CN107605473A (en) * | 2017-08-16 | 2018-01-19 | 中国科学院地质与地球物理研究所 | One kind is with brill orientation acoustic wave apparatus sound source test device |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4208733A (en) * | 1962-12-20 | 1980-06-17 | Csf-Compagnie Generale De Telegraphie Sans Fil | Sound source detecting systems |
| US20050226098A1 (en) * | 2004-04-07 | 2005-10-13 | Baker Hughes Incorporated | Dynamic acoustic logging using a feedback loop |
| CN102918424A (en) * | 2010-06-03 | 2013-02-06 | 雪佛龙美国公司 | Device and method for generating a beam of acoustic energy from a borehole, and applications thereof |
| CN205786497U (en) * | 2016-06-02 | 2016-12-07 | 中国海洋石油总公司 | A kind of sound insulating structure experiment test device |
| CN107605473A (en) * | 2017-08-16 | 2018-01-19 | 中国科学院地质与地球物理研究所 | One kind is with brill orientation acoustic wave apparatus sound source test device |
| US20190055840A1 (en) * | 2017-08-16 | 2019-02-21 | Institute Of Geology And Geophysics, Chinese Academy Of Sciences | Acoustic source testing apparatus of azimuthally acoustic logging while drilling (lwd) instrument |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113982557A (en) * | 2021-10-24 | 2022-01-28 | 武汉三江航天远方科技有限公司成都分公司 | Energy emission direction detection device and measurement method of dipole emission sensor |
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Application publication date: 20200609 |