Remote burst synchronization system test device for self-controlled shooting gathering

Abstract

The application provides a self-control excitation collection remote explosion synchronization system testing device, which comprises an encoder testing signal interface circuit, a decoder testing signal interface circuit, a signal pickup circuit, a data collection module, a time sequence measurement module and a data analysis module, the encoder testing signal interface circuit collects TB signals of an encoder, the decoder testing signal interface circuit collects CTB signals and high voltage output signals of a decoder, the signal pickup circuit converts the three signals from analog signals into digital signals, the data collection module completes data collection, the time sequence measurement module measures time sequence values and output high voltage signals according to the collected data, and the data analysis module calculates synchronization precision and output voltage. The self-control excitation collection remote explosion synchronization system testing device can test and calibrate the synchronization precision of a remote explosion system, the testing precision reaches 1us, the excitation time interval is controlled in the millisecond level, and the reliability of the system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oilfield development, and particularly relates to a remote explosion synchronization system testing device for self-control excitation collection. BACKGROUND

[0002] The remote explosion synchronization system (hereinafter referred to as the remote explosion synchronization system) refers to a system for controlling the synchronization of seismic wave excitation and reception when a well gun is used for seismic exploration. The remote explosion equipment generally needs to test the synchronization precision in the synchronization system before use or after maintenance, and the index directly affects the accuracy of seismic data. The precision range is 0-100 μs. The existing testing techniques are as follows:

[0003] (1) The seismic data acquisition system is used for acquisition, and the minimum sampling rate is generally 0.5 ms, so the maximum synchronization precision is 500 μs. Obviously, the test precision requirement cannot be met.

[0004] (2) The time sequence relationship of the signal is displayed by the oscilloscope, and the test is captured to obtain the result. This method is not self-controlled in the excitation time, the sampling precision is high, the figure is not easy to capture, and the conclusion cannot be digitized.

[0005] (3) The professional data acquisition equipment is used to calibrate the time of the signal of the encoder to obtain the synchronization precision. This method is not self-controlled in the excitation time, and lacks data analysis, so the conclusion is not intuitive.

[0006] In the Chinese application with the application number CN201110364182.7, a geophysical exploration special synchronization system testing device is provided, which is a geophysical exploration special remote explosion synchronization system testing device for detecting and calibrating the remote explosion synchronization system explosion time and the start recording time of the seismic instrument in oil exploration. The device is composed of an embedded control computer, a wellhead simulation signal circuit and a detonator simulation circuit. The high-voltage signal of the explosion machine is divided by a resistor, and then stabilized at 12V by two voltage stabilizing tubes. Then, the high-voltage signal is connected to the TB and ANALOG signals through a signal extraction circuit. The microprocessor outputs a sine wave to the wellhead simulation circuit. When the explosion machine explodes, the simulation detonator explodes to generate a verification TB, and the result is displayed. The test precision is within 5 μs.

[0007] In the Chinese patent application with the application number CN200920082999.3, a remote explosion system detection device is related to the detection equipment of remote explosion system in the field of geophysical exploration technology, which comprises an encoder detection box for detecting and recording the clock time-off signal, verification time-off signal and wellhead signal, an encoder signal detection cable, a decoder detection box for detecting and recording the high-voltage explosion signal and generating an analog detector signal, a high-voltage detection cable and a decoder wellhead cable. The utility model overcomes the problem of time precision encountered in the detection of digital remote explosion system by using the traditional detection method, and no detonator is used in the detection, so that the detection is safer and more reliable. The high-voltage explosion signal can be directly detected, and the test can be carried out under the condition that the encoder and the decoder are separated by a sufficient distance, so that the test result is more rigorous and reliable.

[0008] In the Chinese patent application with the application number CN201310230824.3, a double-sleeve instrument asynchronous excitation control device and method are related to the automatic control technology field of seismic instrument excitation in two adjacent work areas in the geophysical prospecting industry. The first ARIES seismic instrument is connected to the first controller, the line connecting the first ARIES seismic instrument and the SHOTPRO encoder is the ignition line, the SHOTPRO encoder is connected to the first controller, the first controller is connected to the first antenna, the SHOTPRO encoder is connected to the ninth antenna, the SHOTPRO exploder is connected to the fourth antenna, the second ARIES seismic instrument is connected to the second controller, the second controller is connected to the BOOM-BOX encoder, the line connecting the second ARIES seismic instrument and the BOOM-BOX encoder is the ignition line, the second controller is connected to the second antenna, the BOOM-BOX encoder is connected to the tenth antenna, and the BOOM-BOX exploder is connected to the eighth antenna.

[0009] The above prior art has great differences from the present application and cannot solve the technical problems we want to solve. Therefore, we have invented a new self-control excitation collection remote explosion synchronization system test device. SUMMARY

[0010] The purpose of the present application is to provide a self-control excitation collection remote explosion synchronization system test device which can self-control excitation collection, test and calibrate the time difference between the encoder clock TB generation time and the pulse source excitation time, and output voltage.

[0011] The purpose of the present application can be realized by the following technical measures: the self-control excitation collection remote explosion synchronization system test device comprises an encoder test signal interface circuit, a decoder test signal interface circuit, a signal pickup circuit, a data acquisition module, a time sequence measurement module and a data analysis module, the encoder test signal interface circuit collects TB signals of an encoder, the decoder test signal interface circuit collects CTB signals and high voltage output signals of a decoder, the signal pickup circuit is connected to the encoder test signal interface circuit and the decoder test signal interface circuit, and converts the three signals from analog signals into digital signals, the data acquisition module is connected to the signal pickup circuit, and completes data acquisition, the time sequence measurement module is connected to the data acquisition module, and measures time sequence values and output high voltage signals according to collected data, and the data analysis module is connected to the time sequence acquisition module, and calculates synchronization accuracy and output voltage values.

[0012] The purpose of the present application can also be realized by the following technical measures:

[0013] The decoder test signal interface circuit adopts a group of high-power resistors to replace simulated detonators, and is connected to the decoder CTB circuit and the high voltage terminal of the decoder respectively, so as to collect CTB signals of the decoder during initiation, and simultaneously collect voltage signals output from the sampling high voltage terminal end in a voltage division and current division mode.

[0014] The data acquisition module adopts a sampling rate of 1MHz, and the data per second reaches one million, and the test accuracy is 1us.

[0015] The signal pickup circuit transmits the TB signals to the data acquisition module through channel 1, and transmits the CTB signals and high voltage output signals to the data acquisition module through channel 2.

[0016] The data acquisition module is a channel synchronous sampling, that is, channel 1 and channel 2 each have an independent AD conversion unit, and when collecting signals, the analog signals of TB, CTB and high voltage output are converted into digital signals, and enter the time sequence measurement module through channel 1 and channel 2.

[0017] The time sequence measurement module collects the encoder TB signals in channel 1, and judges the collected data in real time, and observes whether the corresponding pulse is detected in the signals, the pulse value is defined as 3 times the mean background noise, and once the corresponding pulse is detected, the counter is started, and the value of the counter at this time is T0; then jump to channel 2 for continuous detection, and once the corresponding pulse is detected in channel 2, the counter stops counting, and the value in the counter at this time is T1, the measured time sequence value and output high voltage signal enter the data analysis module.

[0018] The data analysis module calculates the synchronous time difference T of the remote blasting system through the formula T=T1-T0 by using the measured time sequence value.

[0019] The data analysis module also screens the maximum voltage U1 according to the collected high voltage signal, and calculates the voltage U0 of the high voltage output of the decoder by using the voltage division formula U0=U1(R1+R2) / R1, wherein R1 and R2 are high-power resistors connected in series to the high voltage terminal.

[0020] The self-control excitation and collection remote blasting synchronous system test device further comprises a display screen connected to the data analysis module to display the synchronous precision value, image and high voltage output value of the high voltage terminal.

[0021] The self-control excitation and collection remote blasting synchronous system test device further comprises a self-control excitation interface circuit connected to the detonation signal and +5V power supply, and sends the excitation instruction to the decoder.

[0022] The self-control excitation and collection remote blasting synchronous system test device further comprises a serial port control module connected to the self-control excitation interface circuit, the data collection module and the encoder test signal interface circuit. When the self-control excitation interface circuit receives the detonation signal, the +5V power supply is turned on. At this time, the encoder starts to be in a waiting command state, and the serial port control module is turned on. After being turned on, the data collection module is started first, and then when the trigger delay ends, the detonation signal is sent to the encoder through the encoder test signal interface circuit. The encoder starts to work and sends the detonation signal to the decoder which has been fully charged through the radio station, so as to realize the self-control excitation and signal collection of the remote blasting system.

[0023] The serial port control module controls three times; the click delay is the delay time collected by the data collection module; the trigger delay refers to the delay time of the serial port control module being turned on, that is, the encoder excitation delay time; and the trigger time refers to the time during which the serial port control module is continuously turned on.

[0024] The self-control excitation and collection remote blasting synchronous system test device of the present application adopts a 1MHz sampling rate data collection module, a time sequence measurement module and a data analysis module, so that the test precision can be improved to 1μs. The self-control excitation system is adopted, so that the encoder and the data collection module can be logically controlled according to the time sequence, excitation and collection are performed, and the reliability of the collected data is improved. The present application can realize the accurate test and calibration of the synchronous precision of the remote blasting system by the encoder, the precision reaches 1μs, the output voltage value is tested, the test data and image can be directly displayed, the self-control excitation system can logically control the encoder and the data collection module according to the time sequence, excitation and collection are performed, and the collected data is accurate and reliable. Compared with the prior art, the present application has the following advantages:

[0025] (1) can test, calibration remote explosion system synchronization accuracy, test accuracy to 1 μs.

[0026] (2) automatic excitation technology can control remote explosion system excitation and data acquisition module acquisition, the excitation time interval control in millisecond level, improve the reliability of the system.

[0027] (3) direct display synchronization precision value and output voltage value, and the image of two. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a specific embodiment of the structure diagram of the remote explosion synchronization system test device of the application. DETAILED DESCRIPTION

[0029] It should be noted that the following detailed description is exemplary, and is intended to provide further explanation of the application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application belongs.

[0030] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation and / or combination thereof.

[0031] The remote explosion synchronization system test device of the application includes an encoder test signal interface circuit, a decoder test signal interface circuit, a signal pickup circuit, a data acquisition module, a time sequence measurement module, a data analysis module, a serial port control module, an automatic excitation interface circuit and a display screen.

[0032] The encoder test signal interface circuit acquires TB signal, the decoder test signal interface circuit acquires CTB signal and high voltage output signal, and the three signals are converted into digital signals by the signal pickup circuit, which are sent to the data acquisition module by channel 1 and channel 2, to complete the data acquisition work. The collected data, the measured time sequence value and the output high voltage signal enter the data analysis module, and the synchronization accuracy and the output voltage are calculated, and finally the test data and the image are displayed on the display screen.

[0033] The encoder test signal interface circuit of the synchronous precision testing device collects the TB signal of the encoder, and the decoder test signal interface circuit of the synchronous precision testing device adopts a group of high-power resistors to replace the simulated detonator, collects the detonator explosion signal released during detonation, and simultaneously collects the voltage and current signals output from the sampling high-voltage terminal in a voltage-dividing and current-dividing manner.

[0034] The three signals pass through the signal pickup circuit, the multiplexer (MUX), the amplifier, the sample-and-hold circuit and the A / D converter, are converted into digital signals, and are sent to the data acquisition module to complete the data acquisition work.

[0035] The collected data pass through the time sequence measurement module, and firstly, the collected TB data are judged in channel 1, the collected value is defined as 3 times of the average background noise as the effective signal value, once the corresponding effective signal value is detected, the counter is started, and the value of the counter is T0 (the counter is set in a downward counting mode); then, the detection is continued in channel 2, and once the corresponding value is detected in channel 2, the counter is stopped, and the value in the counter is T1.

[0036] The measured time sequence value and the output high-voltage signal enter the data analysis module, the synchronous precision and the output voltage are calculated, and finally, the synchronous precision value, the image and the output high-voltage value of the high-voltage terminal are displayed on the display screen.

[0037] Due to the large amount of collected data and short time, the manual operation is difficult, and the automatic and self-controlled collection and excitation system is designed. The self-controlled excitation interface circuit is connected with the detonation signal and the +5V power supply, when the serial port control module is turned on, the data acquisition module is firstly started, then when the trigger delay ends, the detonation signal is sent to the encoder through the encoder test signal interface circuit, the encoder starts to work, and sends the detonation signal to the decoder which has been fully charged through the radio station, so that the self-controlled excitation and signal collection of the remote blasting system are realized.

[0038] The following are several specific embodiments of the application.

[0039] Embodiment 1

[0040] In the specific embodiment 1 of the application, as shown in Figure 1 The encoder test signal interface circuit 1 is connected with the encoder CLKTB circuit, can collect the TB signal of the encoder, is connected with the signal pickup circuit 3, can send the collected TB signal of the encoder to the signal pickup circuit 3, and is connected with the serial port control module 8, and controls the excitation time of the encoder.

[0041] The decoder test signal interface circuit 2 uses a set of high-power resistors to replace the simulated detonator, which is connected to the decoder CTB circuit and the high-voltage terminal of the decoder, respectively, to collect the CTB signal of the decoder during detonation, and simultaneously collects the voltage signal output from the sampling high-voltage terminal by using a voltage division and current division method; and is connected to the signal pickup circuit 3, so as to send the two collected signals to the signal pickup circuit 3.

[0042] The signal pickup circuit 3 is connected to the encoder test signal interface circuit 1, the decoder test signal interface circuit 2 and the data acquisition module 4. The three analog signals collected by the encoder test signal interface circuit 1 and the decoder test signal interface circuit 2 are input into the data acquisition module 4 through channel 1 and channel 2 after passing through a multiplexer (MUX), an amplifier and a sample-and-hold circuit, so as to complete the data acquisition work.

[0043] The data acquisition module 4 is connected to the time sequence measurement module 5. The data acquisition module uses a sampling rate of 1 MHz, so that the data per second reaches one million, and the test precision is 1 μs. This module is a channel synchronous sampling, that is, channel 1 and channel 2 each have an independent AD conversion unit, so that the data collected by each channel is synchronized in time when collecting signals. The analog signals of TB, CTB and high-voltage output are converted into digital signals, which are input into the time sequence measurement module 5 through channel 1 and channel 2.

[0044] The time sequence measurement module 5 is connected to the data analysis module 6. After the data enters the time sequence measurement module 5, the encoder analog signal TB is collected in channel 1 first, and the collected data is judged in real time to observe whether the corresponding pulse is detected in the signal. The pulse value is defined as 3 times the mean background noise. Once the corresponding pulse is detected, the counter is started, and the value of the counter at this time is T0 (the counter is set in a downward counting mode). Then, the detection is continued in channel 2, and once the corresponding pulse is detected in channel 2, the counter stops counting, and the value in the counter at this time is T1. The measured time sequence value and the output high-voltage signal enter the data analysis module 6.

[0045] The data analysis module 6 is connected to the display screen 9. In the data analysis module, the measured time sequence value is calculated to obtain the synchronization time difference value T of the remote blasting system by the formula: T = T1-T0. In the data analysis module, the collected high-voltage signal is screened to obtain the maximum voltage U1, and the voltage U0 of the high-voltage output of the decoder is calculated by using the voltage division formula: U0 = U1(R1+R2) / R1 (R1 and R2 are high-power resistors connected in series to the high-voltage terminal, and the power of each is 10 W, R1 = 0.5 Ω and R2 = 21 Ω). Finally, the test data and images are displayed on the display screen 9.

[0046] Due to the limitation of the maximum writing amount of the data analysis module, the maximum number of collected points of each channel is 1048576, and the data exceeding the maximum number will not be recorded, that is, the effective collection time is 1s, which makes it difficult to collect and trigger the system manually, and therefore, a self-control collection and triggering system is designed.

[0047] The self-control triggering interface circuit 7 is connected with the detonation signal and +5V power supply, and sends the triggering command to the decoder.

[0048] The self-control triggering interface circuit 7 is connected with the serial port control module 8, when the self-control triggering interface circuit 7 receives the detonation signal, the +5V power supply is connected, at this time, the encoder is started in the waiting command state, and the serial port control module 8 is turned on. After being turned on, the data collection module 4 is started first, and then when the trigger delay ends, the detonation signal is sent to the encoder through the encoder test signal interface circuit 1, the encoder starts to work, and sends the detonation signal to the decoder which has been fully charged through the radio station, so as to realize the self-control triggering and signal collection of the remote explosion system, and the triggering interval precision can be controlled to the millisecond level.

[0049] The serial port control module 8 can control three times. The click delay is the delay time of the data collection module 4; the trigger delay is the delay time of the serial port control module 8, that is, the encoder triggering delay time; and the trigger time is the time during which the serial port control module 8 is continuously turned on.

[0050] Embodiment 2:

[0051] In the application of a specific embodiment 2 of the present application, the settings of the three times of the serial port control module 8 are respectively: the click delay is set to 0ms, the trigger delay is set to 400ms, and the trigger time is set to 300ms, so that the self-control triggering and collection can be effectively realized.

[0052] Embodiment 3:

[0053] In the application of a specific embodiment 3 of the present application, the settings of the three times of the serial port control module 8 are respectively: the click delay is set to 0ms, the trigger delay is set to 600ms, and the trigger time is set to 300ms, so that the self-control triggering and collection can be effectively realized.

[0054] Therefore, the settings of the three times of the serial port control module 8 are respectively: the click delay is set to 0ms, the trigger delay is set to 400-600ms, and the trigger time is set to 300ms, so that the self-control triggering and collection can be effectively realized.

[0055] The application adopts a data acquisition module with a 1MHz sampling rate to collect TB, CTB and output voltage three-way signals, and can test and calibrate the synchronization precision of a remote explosion system to 1us. Through a timing measurement module and a data analysis module, the collected data is filtered and analyzed, and the test results are displayed in the form of "synchronization precision and output voltage test data" and "synchronization precision and output voltage test graphics", which is simple and very intuitive. Since the amount of collected data is large and the time is short, manual operation is difficult, and the application designs a self-control collection and excitation system. The self-control excitation circuit and the serial control module are used to control the logic of the encoder and the data acquisition module according to the timing, to excite and collect, and to control the excitation time interval to the millisecond level, thereby improving the reliability of the system. The self-control excitation technology can be applied to the research of node excitation system.

[0056] Finally, it should be noted that: the above only for the preferred embodiments of the application, and not for the purpose of limiting the application, although the application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or to replace some of the technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application shall be included in the protection scope of the application.

[0057] In addition to the technical features described in the specification, they are known to those skilled in the art.

Claims

1. A test device for a remote burst synchronization system for self-activated shooting gather, characterized in that, The remote explosion synchronization system testing device of the self-control excitation collection comprises an encoder testing signal interface circuit, a decoder testing signal interface circuit, a signal pickup circuit, a data collection module, a time sequence measurement module and a data analysis module, the encoder testing signal interface circuit collects TB signals of an encoder, the decoder testing signal interface circuit collects CTB signals and high voltage output signals of a decoder, the signal pickup circuit is connected to the encoder testing signal interface circuit and the decoder testing signal interface circuit, and converts the three signals from analog signals into digital signals, the data collection module is connected to the signal pickup circuit, and completes data collection, the time sequence measurement module is connected to the data collection module, and measures time sequence values and output high voltage signals according to collected data, and the data analysis module is connected to the time sequence collection module, and calculates synchronization precision and output voltage values.

2. The test device for a remote burst synchronization system for self-consistent excitation acquisition according to claim 1, characterized in that, The decoder testing signal interface circuit adopts a group of high-power resistors to replace simulated detonators, and is connected to a decoder CTB circuit and a high voltage terminal of the decoder respectively, so as to collect CTB signals of the decoder at the time of initiation, and simultaneously collect voltage signals output from the high voltage terminal by means of voltage division and current division.

3. The test apparatus for a remote burst synchronization system for self-consistent excitation acquisition of claim 1, wherein, The data collection module adopts a sampling rate of 1 MHz, and the data per second reaches one million, and the testing precision is 1 μs.

4. The test apparatus for a remote burst synchronization system for self-consistent excitation acquisition of claim 1, wherein, The signal pickup circuit transmits the TB signals to the data collection module through channel 1, and transmits the CTB signals and the high voltage output signals to the data collection module through channel 2.

5. The test device for a remote burst synchronization system for self-consistent excitation and acquisition according to claim 4, characterized in that The data collection module is a channel synchronous sampling, that is, channel 1 and channel 2 each have an independent AD conversion unit, and when collecting signals, the analog signals of TB, CTB and high voltage output are converted into digital signals, and then enter the time sequence measurement module through channel 1 and channel 2.

6. The test device for a remote burst synchronization system for self-consistent excitation and acquisition according to claim 5, characterized in that The time sequence measurement module collects the encoder TB signals through channel 1, and judges the collected data in real time, and observes whether corresponding pulses are detected in the signals, the pulse value is defined as 3 times the average background noise, once the corresponding pulses are detected, the counter is started, and the value of the counter at this time is T0; then jump to channel 2 for continuous detection, and once the corresponding pulses are detected in channel 2, the counter stops counting, and the value in the counter at this time is T1, the measured time sequence value and the output high voltage signal enter the data analysis module.

7. The test device for a remote burst synchronization system for self-consistent excitation and acquisition according to claim 6, characterized in that The data analysis module calculates the synchronization time difference T of the remote explosion system through the formula: T = T1-T0.

8. The test device for a remote burst synchronization system for self-consistent excitation and acquisition according to claim 7, characterized in that The data analysis module also screens the maximum voltage U1 according to the collected high voltage signals, and calculates the high voltage output voltage U0 of the decoder by using the voltage division formula U0 = U1(R1+R2) / R1, wherein R1 and R2 are high-power resistors connected in series to the high voltage terminal.

9. The test device for a remote burst synchronization system for self-consistent excitation and acquisition according to claim 8, characterized in that The remote explosion synchronization system testing device of the self-control excitation collection further comprises a display screen connected to the data analysis module, so as to display the synchronization precision value, image and high voltage value output by the high voltage terminal.

10. The test device for a remote burst synchronization system for self-consistent excitation acquisition according to claim 1, characterized in that, The self-control excitation collection remote explosion synchronization system test device further comprises a self-control excitation interface circuit connected with the detonation signal and the +5V power supply and sending the excitation instruction to the decoder.

11. The test device for a self-contained shot acquisition, remote burst synchronization system of claim 1, wherein, The self-control excitation collection remote explosion synchronization system test device further comprises a serial port control module connected with the self-control excitation interface circuit, the data collection module and the encoder test signal interface circuit; when the self-control excitation interface circuit receives the detonation signal, the +5V power supply is turned on; at this time, the encoder starts to be in a waiting command state, and the serial port control module is turned on; after being turned on, the data collection module is started first, and then when the trigger delay ends, the detonation signal is sent into the encoder through the encoder test signal interface circuit; the encoder starts to work and sends the detonation signal to the decoder which has been fully charged through the radio station, so as to realize the self-control excitation and signal collection of the remote explosion system.

12. The test device for a remote burst synchronization system for self-consistent excitation and acquisition according to claim 11, characterized in that The serial port control module controls three times; the click delay is the delay time collected by the data collection module; the trigger delay refers to the delay time of the serial port control module being turned on, that is, the encoder excitation delay time; the trigger time refers to the time of the serial port control module being continuously turned on.

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