A high-voltage transmitting module rapid detection device and method of a nuclear magnetic resonance logging instrument

Abstract

The application discloses a kind of nuclear magnetic resonance logging instrument high-pressure emission module rapid detection device and method, by detection device shell, voltage and current display screen, low-voltage DC power supply, low-voltage control signal source, adjustable load and high-voltage DC power supply etc..Low-voltage DC power supply, low-voltage control signal source, adjustable load and high-voltage DC power supply are placed in detection device shell, corresponding low-voltage DC power supply wiring, low-voltage control signal wiring, load wiring, high-voltage DC power supply wiring can be quickly connected with nuclear magnetic resonance logging instrument high-pressure emission module;Voltage and current display screen is placed on the outer wall of shell, and the voltage and current size of low-voltage DC power supply and high-voltage DC power supply are displayed in real time.The detection device application improves high-pressure emission module detection maintenance efficiency and reliability, reduces failure rate, and provides convenience for engineering application.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of oil logging, and particularly relates to a rapid detection device and method for a high-pressure emission module of a nuclear magnetic resonance logging instrument. BACKGROUND

[0002] In the logging operation construction process of the nuclear magnetic resonance logging instrument, the logging speed is limited, the operation duration is relatively long, the high-pressure emission power reaches the 10kW level, and the performance requirements for the high-pressure emission module are harsh; the nuclear magnetic resonance logging instrument mainly comprises a high-pressure energy storage sub, an electronic instrument sub and a probe, wherein the electronic instrument sub comprises two high-pressure emission modules; the high-pressure emission module mainly generates a high-pressure radio frequency pulse signal under the control of a low-voltage direct current power supply, a low-voltage control signal and a high-voltage direct current power supply, and the signal can excite the hydrogen nucleus of the formation to generate nuclear magnetic resonance after high-voltage filtering and synthesis processing; the high-pressure emission module of the nuclear magnetic resonance logging instrument has a complex structure, poor reliability, complicated detection and maintenance, and a high failure rate. SUMMARY

[0003] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide a rapid detection device and method for a high-pressure emission module of a nuclear magnetic resonance logging instrument, so as to solve the problems of the prior art, such as complex structure, poor reliability, complicated detection and maintenance, and high failure rate.

[0004] In order to achieve the above-mentioned purpose, the following technical solutions are adopted in the present application:

[0005] A rapid detection device for a high-pressure emission module of a nuclear magnetic resonance logging instrument comprises a detection device shell, wherein a low-voltage direct current power supply, a low-voltage control signal source, an adjustable load and a high-voltage direct current power supply are arranged in the detection device shell.

[0006] The low-voltage direct current power supply and the low-voltage control signal source are connected.

[0007] The low-voltage direct current power supply is provided with LVCC± and GND wires; the low-voltage control signal source is provided with RCV and GD± wires; the adjustable load is provided with LOAD± wires; and the high-voltage direct current power supply is provided with HV± wires.

[0008] Further improvements of the present application are as follows:

[0009] Preferably, a voltage and current display screen is arranged in the detection device shell, and the voltage and current display screen is connected with the low-voltage direct current power supply and the high-voltage direct current power supply.

[0010] Preferably, the detection device shell is provided with a heat dissipation material, and the adjustable load is arranged on the heat dissipation material.

[0011] Preferably, the low-voltage DC power supply and the high-voltage DC power supply are both powered by an external 220V AC power supply.

[0012] A detection method of the high-voltage transmitting module rapid detection device of the nuclear magnetic resonance logging instrument, comprising the following steps:

[0013] Step 1, connect the low-voltage DC power supply, the low-voltage control signal source, the adjustable load and the high-voltage DC power supply to the high-voltage transmitting module;

[0014] Step 2, detect whether the low-voltage current of the high-voltage transmitting module is normal through the low-voltage DC power supply;

[0015] Step 3, set the adjustable load to the low gear, and detect whether the high-voltage current and the low-voltage current of the high-voltage transmitting module are normal through the high-voltage DC power supply;

[0016] Step 4, set the adjustable load to the middle gear, and detect whether the high-voltage current and the low-voltage current of the high-voltage transmitting module are normal through the high-voltage DC power supply;

[0017] Step 5, set the adjustable load to the high gear, and detect whether the high-voltage current and the low-voltage current of the high-voltage transmitting module are normal through the high-voltage DC power supply;

[0018] Step 6, set the adjustable load to the high gear all the time, and detect whether the high-voltage current and the low-voltage current of the high-voltage transmitting module are normal through the high-voltage DC power supply under different temperature conditions.

[0019] Preferably, in Step 1, connect the LVCC± wire, the GND wire, the RCV wire and the GD± wire to the low-voltage input end of the high-voltage transmitting module; connect the LOAD± wire to the high-voltage output end of the high-voltage transmitting module; and connect the HV± wire to the high-voltage input end of the high-voltage transmitting module.

[0020] Preferably, in Step 2, the low-voltage DC power supply provides the low-voltage DC power supply ±15V to the high-voltage transmitting module, detects whether the low-voltage current of the high-voltage transmitting module is normal, checks and repairs the low-voltage circuit part of the high-voltage transmitting module until the low-voltage current of the high-voltage transmitting module is normal.

[0021] Preferably, in Step 3, set the adjustable load to the 600-ohm gear, the high-voltage DC power supply provides the DC high-voltage power supply to the high-voltage transmitting module, gradually increases the DC high-voltage power supply voltage from 0 to 600V, detects whether the high-voltage current and the low-voltage current of the high-voltage transmitting module are normal, checks and repairs the high-voltage circuit part of the high-voltage transmitting module until the high-voltage current and the low-voltage current of the high-voltage transmitting module are normal.

[0022] Preferably, in step 4, the adjustable load is set to 450 ohms, the high-voltage DC power supply provides a DC high-voltage power supply for the high-voltage emission module, the DC high-voltage power supply voltage is gradually increased from 0 to 600V, and whether the high-voltage current and the low-voltage current of the high-voltage emission module are normal is detected, if the high-voltage current and the low-voltage current of the high-voltage emission module are not normal, the high-voltage circuit part of the high-voltage emission module is checked and repaired until the high-voltage current and the low-voltage current of the high-voltage emission module are normal.

[0023] Preferably, in step 5, the adjustable load is set to 300 ohms, the high-voltage DC power supply provides a DC high-voltage power supply for the high-voltage emission module, the DC high-voltage power supply voltage is gradually increased from 0 to 600V, and whether the high-voltage current and the low-voltage current of the high-voltage emission module are normal is detected, if the high-voltage current and the low-voltage current of the high-voltage emission module are not normal, the high-voltage circuit part of the high-voltage emission module is checked and repaired until the high-voltage current and the low-voltage current of the high-voltage emission module are normal.

[0024] In step 6, the adjustable load is set to 300 ohms, the high-voltage DC power supply provides a DC high-voltage power supply for the high-voltage emission module, the temperature is increased from normal temperature to 175 DEG C, and the temperature is kept constant for 2h; during the process of keeping constant for 2h, whether the high-voltage current and the low-voltage current of the high-voltage emission module are normal is detected, if the high-voltage current and the low-voltage current of the high-voltage emission module are not normal, the high-voltage circuit part of the high-voltage emission module is checked and repaired until the high-voltage current and the low-voltage current of the high-voltage emission module are normal.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] The application discloses a kind of high-pressure emission module rapid detection device of nuclear magnetic resonance logging instrument, by detection device shell, voltage and current display screen, low-voltage DC power supply, low-voltage control signal source, adjustable load and high-voltage DC power supply etc..Low-voltage DC power supply, low-voltage control signal source, adjustable load and high-voltage DC power supply are placed in detection device shell, corresponding low-voltage DC power supply wiring, low-voltage control signal wiring, load wiring, high-voltage DC power supply wiring can be connected with high-pressure emission module of nuclear magnetic resonance logging instrument quickly;Voltage and current display screen is placed on the outer wall of shell, and the voltage and current size of low-voltage DC power supply and high-voltage DC power supply are displayed in real time.The detection device of the application improves the detection and repair efficiency and reliability of high-voltage emission module, reduces failure rate, and provides convenience for engineering application.

[0027] This invention also discloses a testing method for a rapid testing device of the high-pressure transmitting module of a nuclear magnetic resonance logging tool. This method, based on the testing device, quickly determines the normality of the low-voltage and high-voltage circuits of the high-pressure transmitting module by analyzing the real-time displayed current. Under different load and temperature conditions, it simulates real formation conditions to further verify the stability and reliability of the high-pressure transmitting module, reducing its failure rate. This can improve the efficiency and reliability of testing and maintenance of the high-pressure transmitting module of a nuclear magnetic resonance logging tool, and reduce the failure rate. Attached Figure Description

[0028] Figure 1 Diagram of the high-pressure emission module testing device for nuclear magnetic resonance logging tool;

[0029] Figure 2 Diagram of the testing method for the high-pressure emission module of a nuclear magnetic resonance logging tool;

[0030] The components include: 1. Detection device housing, 2. Voltage and current display screen, 3. Low-voltage DC power supply, 4. Low-voltage control signal source, 5. Adjustable load, and 6. High-voltage DC power supply. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings:

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] This invention discloses as follows Figure 1As shown, the detection device includes a detection device housing 1, a voltage and current display screen 2, a low-voltage DC power supply 3, a low-voltage control signal source 4, an adjustable load 5 and a high-voltage DC power supply 6; the low-voltage DC power supply 3 is located in the detection device housing 1, and supplies power to the low-voltage control signal source 4 and the voltage and current display screen 2, and leads out LVCC±low-voltage DC power supply output signal) and GND(ground) wiring from the detection device housing 1; the low-voltage control signal source 4 is located in the detection device housing 1, and is powered by the low-voltage DC power supply 4, and leads out control signal RCV and control signal GD±wiring from the detection device housing 1, which are used to control the working process of the high-voltage emission module; the adjustable load 5 is located in the detection device housing 1, and is placed on a heat dissipation material, specifically an aluminum alloy plate, and does not need to be powered, and leads out load lead LOAD±wiring from the detection device housing 1; the high-voltage DC power supply 6 is located at the right end of the detection device housing 1, and the voltage and current input of the high-voltage DC power supply 6 is connected to the voltage and current display screen 2, and leads out HV±(high-voltage DC power supply output signal) wiring from the detection device housing 1; the low-voltage DC power supply 3 and the high-voltage DC power supply 6 are powered by an external 220V AC power supply.

[0034] As shown in Figure 2 The high-voltage emission module detection method based on the detection device includes the following steps:

[0035] Step 21, complete the connection of the detection device and the high-voltage emission module, including: LVCC±wiring, GND wiring, RCV wiring and GD±wiring are connected to the low-voltage input end of the high-voltage emission module, LOAD±wiring is connected to the high-voltage output end of the high-voltage emission module, HV±wiring is connected to the high-voltage input end of the high-voltage emission module, and after ensuring that there is no error, step 22 is performed.

[0036] Step 22, complete the low-voltage DC power supply, and detect whether the low-voltage current is normal, including: providing low-voltage DC power supply ±15V for the high-voltage emission module through the low-voltage DC power supply 3, detecting whether the low-voltage DC power supply 3 is normal, and checking the current situation through the voltage and current display screen 2, if the low-voltage current is not normal, the low-voltage circuit part of the high-voltage emission module should be checked, and after ensuring that the low-voltage circuit is normal, step 22 is performed again; if the low-voltage current is normal, step 23 is performed.

[0037] Step 23, complete load low, supply DC high voltage power supply, detection of high voltage current and low voltage current is normal, including: the load is set to 600 ohm, through the high voltage DC power supply 6 to the high voltage emission module output DC high voltage power supply voltage, from 0 to 600V gradually improve the DC high voltage power supply voltage, detection of high voltage current and low voltage current is normal, at the same time through the voltage and current display screen 2 current situation, if the high voltage current or low voltage current is not normal, should focus on the high voltage emission module high voltage circuit part, ensure that the high voltage circuit is normal, then re step 23; if the high voltage current and low voltage current are normal, then directly to step 24.

[0038] Step 24, step 24 complete load set in the middle, through the high voltage DC power supply 6 to the high voltage emission module output DC high voltage power supply voltage, detection of high voltage current and low voltage current is normal, at the same time through the voltage and current display screen 2 current situation; specific including: the load is set to 450 ohm, from 0 to 600V gradually improve the DC high voltage power supply voltage, detection of high voltage current and low voltage current is normal, if the high voltage current or low voltage current is not normal, should focus on the high voltage emission module high voltage circuit part, ensure that the high voltage circuit is normal, then re step 24; if the high voltage current and low voltage current are normal, step 25.

[0039] Step 25, complete load high, through the high voltage DC power supply 6 to the high voltage emission module output DC high voltage power supply voltage, detection of high voltage current and low voltage current is normal, at the same time through the voltage and current display screen 2 current situation; specific including: load is set to 300 ohm, from 0 to 600V gradually improve the DC high voltage power supply voltage, detection of high voltage current and low voltage current is normal, if the high voltage current or low voltage current is not normal, should focus on the high voltage emission module high voltage circuit part, ensure that the high voltage circuit is normal, then re step 25; if the high voltage current and low voltage current are normal, step 26.

[0040] Step 26, complete different temperature conditions, load high, supply DC high voltage power supply, detection of high voltage current and low voltage current is normal, including: the load is set to 300 ohm, temperature from room temperature to 175 DEG C, constant temperature 2h, detection of high voltage current and low voltage current is normal, if the high voltage current or low voltage current is not normal, should focus on the high voltage emission module high voltage circuit part, ensure that the high voltage circuit is normal, then re step 26; if the high voltage current and low voltage current are normal, the high voltage emission module detection is completed.

[0041] The detection device has high integration, easy to operate and use, can improve the detection and maintenance efficiency and reliability of the high voltage emission module, and reduce the failure rate.

[0042] The above merely provides the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A detection method of a rapid detection device of a high-voltage transmitting module of a nuclear magnetic resonance logging instrument, characterized in that, The detection method is based on the high-voltage emission module rapid detection device of the nuclear magnetic resonance logging instrument; the detection device shell (1) is provided with a low-voltage DC power supply (3), a low-voltage control signal source (4), an adjustable load (5), and a high-voltage DC power supply (6) in the detection device shell (1); The low-voltage DC power supply (3) and the low-voltage control signal source (4) are connected; The low-voltage DC power supply (3) has LVCC± and GND connections; the low-voltage control signal source (4) has RCV and GD± connections; the adjustable load (5) has LOAD± connections; and the high-voltage DC power supply (6) has HV± connections; The detection device shell (1) is provided with a voltage and current display screen (2), which is connected with the low-voltage DC power supply (3) and the high-voltage DC power supply (6); The detection method comprises the following steps: Step 1, the low-voltage DC power supply (3), the low-voltage control signal source (4), the adjustable load (5), and the high-voltage DC power supply (6) are connected with the high-voltage emission module; Step 2, the low-voltage DC power supply (3) is used to detect whether the low-voltage current of the high-voltage emission module is normal; in step 2, the low-voltage DC power supply (3) provides low-voltage DC power supply ±15V for the high-voltage emission module, detects whether the low-voltage current of the high-voltage emission module is normal, checks and repairs the low-voltage circuit part of the high-voltage emission module until the low-voltage current of the high-voltage emission module is normal; Step 3, the adjustable load (5) is set to the low gear, and the high-voltage DC power supply (6) is used to detect whether the high-voltage current and the low-voltage current of the high-voltage emission module are normal; in step 3, the adjustable load (5) is set to 600 ohm gear, the high-voltage DC power supply (6) provides DC high-voltage power supply for the high-voltage emission module, gradually increases the DC high-voltage power supply voltage from 0 to 600V, detects whether the high-voltage current and the low-voltage current of the high-voltage emission module are normal, checks and repairs the high-voltage circuit part of the high-voltage emission module until the high-voltage current and the low-voltage current of the high-voltage emission module are normal; Step 4, the adjustable load (5) is set to the middle gear, and the high-voltage DC power supply (6) is used to detect whether the high-voltage current and the low-voltage current of the high-voltage emission module are normal; in step 4, the adjustable load (5) is set to 450 ohm gear, the high-voltage DC power supply (6) provides DC high-voltage power supply for the high-voltage emission module, gradually increases the DC high-voltage power supply voltage from 0 to 600V, detects whether the high-voltage current and the low-voltage current of the high-voltage emission module are normal, checks and repairs the high-voltage circuit part of the high-voltage emission module until the high-voltage current and the low-voltage current of the high-voltage emission module are normal; Step 5, the adjustable load (5) to high gear, through the high-voltage DC power supply (6) to detect whether the high-voltage current and low-voltage current of the high-voltage transmitting module are normal; in step 5, the adjustable load (5) is set to 300 ohm gear, the high-voltage DC power supply (6) provides DC high-voltage power supply for the high-voltage transmitting module, gradually increases the DC high-voltage power supply voltage from 0 to 600V, detects whether the high-voltage current and low-voltage current of the high-voltage transmitting module are normal, if the high-voltage current and low-voltage current of the high-voltage transmitting module are not normal, checks and repairs the high-voltage circuit part of the high-voltage transmitting module until the high-voltage current and low-voltage current of the high-voltage transmitting module are normal; Step 6, the adjustable load (5) is always set to high gear, under different temperature conditions, through the high-voltage DC power supply (6) to detect whether the high-voltage current and low-voltage current of the high-voltage transmitting module are normal; The adjustable load (5) is set to 300 ohm gear, the high-voltage DC power supply (6) provides DC high-voltage power supply for the high-voltage transmitting module, the temperature is increased from normal temperature to 175℃, and the temperature is kept constant for 2h; during the process of keeping the temperature constant for 2h, it is detected whether the high-voltage current and low-voltage current of the high-voltage transmitting module are normal, if the high-voltage current and low-voltage current of the high-voltage transmitting module are not normal, the high-voltage circuit part of the high-voltage transmitting module is checked and repaired until the high-voltage current and low-voltage current of the high-voltage transmitting module are normal.

2. The detection method of the high-voltage transmitting module rapid detection device of the nuclear magnetic resonance logging instrument according to claim 1, characterized in that, In step 1, the LVCC± wiring, the GND wiring, the RCV wiring and the GD± wiring are all connected with the low-voltage input end of the high-voltage transmitting module; the LOAD± wiring is connected with the high-voltage output end of the high-voltage transmitting module; and the HV± wiring is connected with the high-voltage input end of the high-voltage transmitting module.

3. The detection method of the high-voltage transmitting module rapid detection device of the nuclear magnetic resonance logging instrument according to claim 1, characterized in that, The detection device housing (1) is provided with a heat dissipation material, and the adjustable load (5) is arranged on the heat dissipation material.

4. The detection method of the high-voltage transmitting module rapid detection device of the nuclear magnetic resonance logging instrument according to claim 1, characterized in that, The low-voltage DC power supply (3) and the high-voltage DC power supply are both supplied by external 220V AC power supply.

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