Storage type sound wave variable density logging instrument testing device and method

Abstract

The invention belongs to the technical field of acoustic variable density logging equipment detection, and particularly discloses a storage type acoustic variable density logging instrument testing device and method. Comprising a main control module, and the main control module is electrically connected with a high-voltage ignition pulse shaping processing circuit, a flash memory and a sound wave output circuit; the high-voltage ignition pulse shaping processing circuit is used for acquiring a high-voltage ignition pulse signal from the acoustic variable-density logging instrument, converting the high-voltage ignition pulse signal into a TTL level pulse signal and sending the TTL level pulse signal to the main control module; the main control module is used for communicating with the PC upper computer to obtain sound wave variable density logging data; the flash memory is used for storing sound wave variable density logging data; the sound wave output circuit is used for outputting the obtained sound wave variable density logging data as sound wave signals. According to the invention, the operation state and the performance index of the storage type sound wave variable density instrument are tested by downloading sound wave variable density logging data and outputting sound wave signals through the main control module and the sound wave output circuit, and the test efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of acoustic variable density logging equipment detection, and particularly relates to a testing device and method for a memory acoustic variable density logging instrument. Background Art

[0002] Acoustic variable density logging is a type of acoustic logging, mainly used to evaluate the cementing quality. Its principle is to utilize the significant difference in acoustic impedance between cement and mud (or water) to reflect the bonding quality between cement and casing, and between casing and formation through the attenuation effect of the acoustic wave propagating along the casing axis. An acoustic variable density logging tool generally consists of an electronic circuit and an acoustic assembly. There is a transmitting crystal and two receiving crystals on the acoustic assembly; the source distances are 3 feet and 5 feet respectively. The memory acoustic variable density logging tool is powered by batteries and conducts downhole cementing quality evaluation logging operations through drill pipes or tubing. The logging data is stored in the storage chip inside the tool, and the data is read through a data reading device after the logging is completed.

[0003] Currently, during logging, the memory acoustic variable density logging tool cannot perform on-site empty-casing calibration like a cable logging tool. It is necessary to set the downhole gain before the logging operation and perform calibration after the logging operation is completed. Due to inappropriate gain selection, the first wave of the 3-foot or the full wave train of the 5-foot may be limited, resulting in unqualified logging curves and requiring secondary construction operations.

[0004] The common testing method in the acoustic variable density logging tool workshop is to place the acoustic assembly in an aluminum water tank, seal both ends of the water tank and inject water. The upper end of the acoustic assembly is connected to the electronic circuit for power-on testing. This testing method requires installing and unloading the tool into the water tank, filling and draining water, with low testing efficiency and unable to effectively test the performance consistency of the acoustic variable density electronic circuit. Summary of the Invention

[0005] The purpose of the present invention is to provide a testing device and method for a memory acoustic variable density logging instrument to solve the technical problem that the existing memory acoustic variable density logging instrument requires loading and unloading the water tank and has low testing efficiency.

[0006] To achieve the above purpose, the present invention is implemented by adopting the following technical solutions:

[0007] In the first aspect, the present invention provides a testing device for a memory acoustic variable density logging instrument, including: a main control module;

[0008] The main control module is electrically connected to a high-voltage ignition pulse shaping and processing circuit, a flash memory, and an acoustic wave output circuit respectively;

[0009] The high-voltage ignition pulse shaping and processing circuit is used to obtain a high-voltage ignition pulse signal from a sonic variable density logging tool, and convert the high-voltage ignition pulse signal into a TTL-level pulse signal and send it to the main control module;

[0010] The main control module is used to communicate with a PC host computer to obtain sonic variable density logging data, and store the sonic variable density logging data in a flash memory. The main control module is also used to control a sonic output circuit to output a sonic signal;

[0011] The flash memory is used to store sonic variable density logging data;

[0012] The sonic output circuit is used to obtain sonic variable density logging data, and output the obtained sonic variable density logging data as a sonic signal.

[0013] A further improvement of the present invention is that: it further includes a high-voltage acquisition circuit, and the high-voltage acquisition circuit is used to obtain voltage data of a sonic variable density logging tool and upload the voltage data to the main control module.

[0014] A further improvement of the present invention is that: the main control module is connected to the PC host computer through a USB interface.

[0015] A further improvement of the present invention is that: it further includes an indicator light driving circuit, and the indicator light driving circuit is used to reflect the working states of the sonic output circuit and the high-voltage ignition pulse shaping and processing circuit.

[0016] A further improvement of the present invention is that: the main control module is connected to a display screen through RS485.

[0017] A further improvement of the present invention is that: the sonic output circuit includes a CBL signal output and a VDL signal output.

[0018] A further improvement of the present invention is that: it further includes a low-voltage power supply circuit, and the low-voltage power supply circuit is used to supply low voltage to the main control module.

[0019] A further improvement of the present invention is that: the flash memory is a single-chip K9G8G08U0M.

[0020] A further improvement of the present invention is that: the main control module is an STM32F103VET6.

[0021] In a second aspect, the present invention provides a method for testing a memory-type sonic variable density logging tool, including the following steps:

[0022] The main control module communicates with a PC host computer to download sonic variable density logging data and stores it in the flash memory;

[0023] The main control module reads the acoustic variable density logging data from the flash memory;

[0024] The high-voltage ignition pulse shaping and processing circuit receives the high-voltage ignition pulse signal of the acoustic variable density logging instrument, converts the high-voltage ignition pulse signal into a TTL-level pulse signal and sends it to the main control module, and the main control module cuts off the external port;

[0025] After the external port is cut off, the main control module controls the acoustic wave output circuit to output an acoustic wave signal to the acoustic variable density logging instrument according to the acoustic variable density logging data, completing the test.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] 1. The present invention outputs an acoustic wave signal by downloading the acoustic variable density logging data through the main control module and the acoustic wave output circuit, thereby testing the operating state and performance indicators of the memory acoustic variable density instrument; determining the gain gear selection of the instrument under different casing sizes, ensuring the correct gain selection of the memory acoustic variable density logging instrument during logging operations, without waveform clipping, and improving the logging success rate.

[0028] 2. The present invention outputs two kinds of acoustic wave analog signals, which can replace the acoustic logging system to effectively test the performance consistency of the acoustic variable density electronic circuit and improve the test efficiency; BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0030] In the drawings:

[0031] Figure 1 is a module diagram of a test device for a memory acoustic variable density logging instrument of the present invention;

[0032] Figure 2 is a circuit diagram of the acoustic wave output circuit in a test device for a memory acoustic variable density logging instrument of the present invention;

[0033] Figure 3 is a circuit diagram of the high-voltage ignition pulse shaping and processing circuit in a test device for a memory acoustic variable density logging instrument of the present invention;

[0034] Figure 4 is a circuit diagram of the high-voltage acquisition circuit in a test device for a memory acoustic variable density logging instrument of the present invention;

[0035] Figure 5 is a circuit diagram of the flash memory in a test device for a memory acoustic variable density logging instrument of the present invention;

[0036] Figure 6 This is the peripheral circuit diagram of the main control module in a test device for a memory acoustic variable density logging tool according to the present invention;

[0037] Figure 7 This is the circuit diagram of the DC - DC low - voltage power supply circuit in a test device for a memory acoustic variable density logging tool according to the present invention;

[0038] Figure 8 This is the schematic diagram of the control panel in a test device for a memory acoustic variable density logging tool according to the present invention;

[0039] Figure 9 This is the schematic diagram of the connector in a test device for a memory acoustic variable density logging tool according to the present invention. Detailed implementation manners

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0041] The following detailed descriptions are all exemplary descriptions, aiming to provide further details of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the present invention are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present invention.

[0042] Embodiment 1

[0043] A test device for a memory acoustic variable density logging tool, as Figure 1 shown, includes a main control module, a high - voltage ignition pulse shaping and processing circuit, a high - voltage acquisition circuit, a low - voltage power supply circuit, an RS485 interface, an indicator light driving circuit, a USB interface, a flash memory, and an acoustic wave output circuit;

[0044] The main control module is electrically connected to the high - voltage ignition pulse shaping and processing circuit, the high - voltage acquisition circuit, the low - voltage power supply circuit, the RS485 interface, the indicator light driving circuit, the USB interface, the flash memory, and the acoustic wave output circuit respectively;

[0045] The main control module communicates with the PC host computer through the USB interface, is used to obtain several groups of acoustic variable density logging data, and stores the several groups of acoustic variable density logging data in the flash memory;

[0046] The main control module is electrically connected to the display screen through the RS485 interface, so as to realize human - machine interaction;

[0047] The low - voltage power supply circuit is used to provide multiple low - voltage power supplies for the main control module;

[0048] The high-voltage ignition pulse shaping and processing circuit is used to obtain a high-voltage ignition pulse signal from a sonic variable density logging instrument, and convert the high-voltage ignition pulse signal into a TTL-level pulse signal and send it to the main control module;

[0049] The high-voltage acquisition circuit is used to acquire the voltage value of the sonic variable density logging instrument;

[0050] The flash memory is used to store sonic variable density logging data;

[0051] The acoustic wave output circuit is used to acquire sonic variable density logging data and output the acquired sonic variable density logging data as an acoustic wave signal.

[0052] Specifically, the main control module is STM32F103VET6. STM32F103VET6 is based on the ARM 32-bit Cotex-M3 core, with a maximum operating frequency of 72 MHz; up to 512 KB of FLASH and 64 KB of SRAM memory; two 12-bit D / A converters and three multi-channel 12-bit A / D converters; having multiple 16-bit timers and multiple communication interfaces, and almost all ports can receive 5V signals.

[0053] Specifically, the high-voltage ignition pulse shaping and processing circuit obtains the high-voltage ignition pulse signal from the electronic circuit of the sonic variable density logging instrument.

[0054] Specifically, the acoustic wave output circuit is as Figure 2 shown, and is used to output CBL signals and VDL signals;

[0055] When the acoustic wave output circuit is working, the main control module reads a frame of acoustic wave data from the flash memory. A frame of acoustic wave data is 2 KB bytes, and these data are temporarily stored in the SRAM. When the main control module receives the TTL-level pulse signal and the main control module has an external interrupt, the main control module outputs 8-bit parallel data to the D / A converter AD5424 through the PD0~7 ports, with a conversion interval of 2 us. The two DAC outputs of the microcontroller are used as the voltage reference of the AD7524, and the amplitude of the CBL and VDL signals is adjusted by controlling the output of the DAC. The finally output two-way acoustic wave signals are then returned to the electronic circuit of the sonic variable density logging instrument through the connector interface.

[0056] Specifically, the high-voltage ignition pulse shaping and processing circuit is as Figure 3As shown, the high-voltage ignition pulse signal first enters the transistor output optocoupler 4N25, converting the 150V - 400V pulse signal into a 5V TTL-level pulse signal. Then, the interference signal is removed through the Schmitt trigger 74HC14. The finally output pulse signal enters the main control module. After receiving the pulse signal, the main control module has an external interruption. The main control module controls the DAC of two CBLs and VDLs to output acoustic signals through the acoustic wave output circuit via the parallel port. At the same time, the main control module adopts the up and down edge trigger capture mode, using a 16-bit general timer to measure the pulse width and display it.

[0057] Specifically, the high-voltage acquisition circuit is as Figure 4 shown. The high-voltage acquisition circuit first attenuates the HV high-voltage signal connected to the acoustic wave variable density electronic circuit by 120 times, then passes through a first-order low-pass filter and a voltage follower, and finally inputs it to the 12-bit A / D converter port of the main control module for sampling processing. The high-voltage value after sampling processing is displayed on the display screen, so that the working state of the high-voltage power supply of the acoustic wave variable density electronic circuit can be tested.

[0058] Specifically, the flash memory uses a single-chip K9G8G08U0M as the non-volatile data memory, which can store multiple groups of acoustic wave variable density logging data. K9G8G08U0M has a flash memory capacity of 8Gbit and a spare space of 256Mbit. The page read time for a size of (2K + 64)Byte is 60us, and the write operation time is 800us. The I / O pins can transmit addresses, data, and commands. With 100K programming / erasing cycles to improve reliability, K9K8G08U0M is the best solution for large non-volatile storage applications.

[0059] Specifically, the low-voltage power supply circuit is a DC-DC low-voltage power supply circuit, as Figure 7 shown. The acoustic wave variable density logging instrument provides a DC 72V power supply; the DC 72V passes through the DC-DC low-voltage power supply circuit to output three low-voltage DC power supplies; one +5V passes through the low-dropout (LDO) power supply circuit to output +3.3V for the main control module and peripheral digital circuits, one +15V for the 5-inch touch liquid crystal display and indicator light drive circuit, and one ±5A for the DAC to output CBL and VDL analog signal circuits.

[0060] Specifically, the USB interface, RS485 interface, and indicator light drive circuit are as Figure 6 shown.

[0061] Specifically, it also includes a control panel, as Figure 8 shown. The control panel is provided with a USB interface, a CBL output port, a VLD output port, a main power switch, a display screen, a high-voltage ignition pulse signal interface, and several indicator lights.

[0062] The operation panel consists of a main power supply, a USB interface, a human-machine interface, and a quick test interface.

[0063] The main power switch on the operation panel is used to control the power supply / power-off of the device, and this switch is equipped with an indicator light.

[0064] The USB interface on the operation panel is used for the electrical connection between the PC host computer and the device.

[0065] The human-machine interface (HMI) on the operation panel includes a 5-inch touch industrial serial liquid crystal screen and three status indicator lights. The liquid crystal screen is used for parameter setting and information display. For example, parameter settings include hash selection, CBL gain, VDL gain, playback mode, etc.; for example, information display includes high-voltage voltage, pulse width, etc.

[0066] There are three BNC quick test interfaces on the operation panel, which are used to test input and output signals.

[0067] The main control circuit board is used to receive a high-voltage ignition pulse, output two acoustic signals, control the touch liquid crystal screen through the RS485 interface, and connect to the PC host computer through the USB interface to download and store the acoustic wave waveform data of the cementing quality.

[0068] Specifically, it also includes a connector interface, which is used to electrically connect the present invention to the acoustic wave variable density logging instrument. The connector interface is as Figure 9 shown.

[0069] Embodiment 2

[0070] A testing method for a memory acoustic wave variable density logging instrument includes the following steps:

[0071] The main control module communicates with the PC host computer to download the acoustic wave variable density logging data and stores it in the flash memory;

[0072] The main control module reads the acoustic wave variable density logging data from the flash memory;

[0073] The high-voltage ignition pulse shaping processing circuit receives the high-voltage ignition pulse signal of the acoustic wave variable density logging instrument, converts the high-voltage ignition pulse signal into a TTL level pulse signal and sends it to the main control module, and the main control module cuts off the external port;

[0074] After the external port is cut off, the main control module controls the acoustic wave output circuit to output an acoustic wave signal to the acoustic wave variable density logging instrument according to the acoustic wave variable density logging data to complete the test.

[0075] As is known by common technical knowledge, the present invention can be implemented by other embodiments that do not depart from its spiritual essence or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation manners of the present invention. Any modification or equivalent substitution that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A testing device for a memory acoustic variable density logging tool, characterized in that Including: Main control module; The main control module is electrically connected to a high-voltage ignition pulse shaping and processing circuit, a flash memory, and an acoustic wave output circuit respectively; The high-voltage ignition pulse shaping and processing circuit is used to obtain a high-voltage ignition pulse signal from an acoustic wave variable density logging instrument, and convert the high-voltage ignition pulse signal into a TTL-level pulse signal and send it to the main control module; The main control module is used to communicate with a PC host computer to obtain acoustic wave variable density logging data, and store the acoustic wave variable density logging data in the flash memory. The main control module is also used to control the acoustic wave output circuit to output an acoustic wave signal; The flash memory is used to store acoustic wave variable density logging data; The acoustic wave output circuit is used to obtain acoustic wave variable density logging data, and output the obtained acoustic wave variable density logging data as an acoustic wave signal.

2. The testing device for a memory acoustic variable density logging tool according to claim 1, characterized in that It also includes a high-voltage acquisition circuit, which is used to obtain the voltage data of the acoustic wave variable density logging instrument and upload the voltage data to the main control module.

3. The testing device for a memory acoustic variable density logging tool according to claim 1, characterized in that The main control module is connected to the PC host computer through a USB interface.

4. The testing device for a memory acoustic variable density logging tool according to claim 1, characterized in that It also includes an indicator light driving circuit, which is used to reflect the working states of the acoustic wave output circuit and the high-voltage ignition pulse shaping and processing circuit.

5. The testing device for a memory acoustic variable density logging tool according to claim 1, characterized in that The main control module is connected to the display screen through RS485.

6. The testing device for a memory acoustic variable density logging tool according to claim 1, characterized in that The acoustic wave output circuit includes CBL signal output and VDL signal output.

7. The testing device for a memory acoustic variable density logging tool according to claim 1, characterized in that It also includes a low-voltage power supply circuit, which is used to supply low voltage to the main control module.

8. The testing device for a memory acoustic variable density logging tool according to claim 1, characterized in that The flash memory is a single-chip K9G8G08U0M.

9. The testing device for a memory acoustic variable density logging tool according to claim 1, characterized in that The main control module is STM32F103VET6.

10. A testing method for a memory acoustic variable density logging tool, based on the testing device for a memory acoustic variable density logging tool according to any one of claims 1 to 9, characterized in that Including the following steps: The main control module communicates with the PC host computer to download the acoustic wave variable density logging data and stores it in the flash memory; The main control module reads the acoustic wave variable density logging data from the flash memory; The high-voltage ignition pulse shaping and processing circuit receives the high-voltage ignition pulse signal of the acoustic wave variable density logging instrument, and converts the high-voltage ignition pulse signal into a TTL-level pulse signal and sends it to the main control module. The main control module cuts off the external port; After the external port is cut off, the main control module controls the acoustic wave output circuit to output an acoustic wave signal to the acoustic wave variable density logging instrument according to the acoustic wave variable density logging data to complete the test.

Images