Drilling fluid level monitoring method and device, electronic equipment and storage medium

Abstract

The invention provides a drilling fluid level monitoring method and device, electronic equipment and a storage medium, and the method comprises the steps: monitoring the liquid level of a circulation tank, and obtaining radar data information; analyzing the radar data information to obtain the liquid level height of the circulating tank; calculating the liquid volume of the circulating tank according to the liquid level height of the circulating tank; and obtaining a current monitoring event of the circulation tank based on the liquid volume of the circulation tank. The liquid level of the circulation tank is accurately measured through the high-frequency radar, the accuracy and flexibility of measuring the liquid volume of the circulation tank are effectively improved, and well kick and well leakage conditions are judged in time.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas drilling pressure control, and in particular to a drilling fluid level monitoring method, device, electronic equipment and storage medium. Background Art

[0002] Drilling investment accounts for a significant proportion of oil and gas production, and safe and efficient drilling is crucial for cost savings and ensuring operational safety. Kicks and lost circulation, caused by complex geological conditions (including fractured carbonate reservoirs, high-temperature and high-pressure formations, and deepwater formations with narrow safety density windows) and imperfect construction techniques, can severely impact safe drilling, resulting in significant losses in manpower, financial resources, and material resources. Therefore, monitoring and early warning of kicks and lost circulation are crucial for improving drilling safety and ensuring efficient drilling.

[0003] In existing technology, drilling sites primarily rely on monitoring inlet and outlet flow rates and changes in the liquid level in the circulation tank to determine well kicks or lost circulation. This is typically done manually, with regular observations, recording, and comparisons. Monitoring the liquid level within the tank is the most cost-effective and effective monitoring method. Commonly used liquid level monitoring methods include: setting target and anchor points on the tank wall, ultrasonic liquid level detection, and high-precision monitoring based on wide-mouth liquid level changes using amplification.

[0004] However, the existing method of monitoring the liquid level of the circulation tank is difficult to accurately measure the volume change of the circulation tank, and it is difficult to timely judge the occurrence of well kick and well leakage, and the flexibility is poor because the liquid level of the circulation tank is always in dynamic change. Summary of the Invention

[0005] Based on this, it is necessary to provide a drilling fluid level monitoring method, device, electronic equipment and storage medium to address the above technical problems.

[0006] A drilling fluid level monitoring method, comprising:

[0007] Monitor the liquid level of the circulation tank and obtain radar data information;

[0008] Analyzing the radar data information to obtain the liquid level of the circulation tank;

[0009] Calculating the liquid volume of the circulation tank according to the liquid level height of the circulation tank;

[0010] A current monitoring event of the circulation tank is obtained based on the liquid volume of the circulation tank.

[0011] In one embodiment, the current monitoring events of the circulation tank include overflow events and leakage events;

[0012] The step of obtaining the current monitoring event of the circulation tank based on the liquid volume of the circulation tank comprises:

[0013] comparing the liquid volume of the circulation tank with the initial liquid volume;

[0014] When the difference between the liquid volume of the circulation tank and the initial liquid volume is greater than a preset change threshold, determining that the current monitoring event of the circulation tank is an overflow event, and determining the difference between the liquid volume of the circulation tank and the initial liquid volume as the overflow amount;

[0015] detecting whether the overflow amount is greater than a first overflow threshold;

[0016] When the overflow amount is greater than a first overflow threshold, an overflow warning message is issued.

[0017] In one embodiment, after the step of issuing overflow warning information when the overflow amount is greater than the first overflow threshold, the method further includes:

[0018] detecting whether the overflow amount is less than or equal to a second overflow threshold, wherein the second overflow threshold is greater than the first overflow threshold;

[0019] When the overflow amount is less than or equal to a second overflow threshold, a first overflow execution event is acquired, and the execution of the first overflow execution event is controlled.

[0020] In one embodiment, after the step of detecting whether the overflow amount is less than or equal to the second overflow threshold, the method further includes:

[0021] When the overflow amount is greater than a second overflow threshold, a second overflow execution event is acquired, and the second overflow execution event is controlled to be executed.

[0022] In one embodiment, after the step of comparing the liquid volume of the circulation tank with the initial liquid volume, the method further comprises:

[0023] When the difference between the liquid volume of the circulation tank and the initial liquid volume is less than a preset change threshold, determining that the current monitoring event of the circulation tank is a leakage event, and determining the difference between the liquid volume of the circulation tank and the initial liquid volume as the leakage amount;

[0024] detecting whether the leakage amount is greater than a first leakage threshold;

[0025] When the leakage amount is greater than a first leakage threshold, a leakage warning message is issued.

[0026] In one embodiment, after the step of issuing a leakage warning message when the leakage amount is greater than a first leakage threshold, the step further includes:

[0027] detecting whether the leakage amount is less than or equal to a second leakage threshold, wherein the second leakage threshold is greater than the first leakage threshold;

[0028] When the leakage amount is less than or equal to a second leakage threshold, a first leakage execution event is acquired, and the execution of the first leakage execution event is controlled.

[0029] A drilling fluid level monitoring system, comprising: a high-frequency radar, an early warning analysis unit, and a control unit;

[0030] The control unit is used to monitor the liquid level of the circulation tank through the high-frequency radar to obtain radar data information; analyze the radar data information to obtain the liquid level height of the circulation tank; calculate the liquid volume of the circulation tank according to the liquid level height of the circulation tank through the early warning analysis unit; and obtain the current monitoring event of the circulation tank based on the liquid volume of the circulation tank.

[0031] A drilling fluid level monitoring device, comprising:

[0032] Data acquisition module, used to monitor the liquid level of the circulation tank and obtain radar data information;

[0033] An analysis module, configured to analyze the radar data information to obtain the liquid level of the circulation tank;

[0034] a calculation module, configured to calculate the liquid volume of the circulation tank according to the liquid level of the circulation tank;

[0035] An event acquisition module is used to obtain a current monitoring event of the circulation tank based on the liquid volume of the circulation tank.

[0036] An electronic device includes a memory and a processor, wherein the memory stores a computer program, and wherein the processor performs the following steps when executing the computer program:

[0037] Monitor the liquid level of the circulation tank and obtain radar data information;

[0038] Analyzing the radar data information to obtain the liquid level of the circulation tank;

[0039] Calculating the liquid volume of the circulation tank according to the liquid level height of the circulation tank;

[0040] A current monitoring event of the circulation tank is obtained based on the liquid volume of the circulation tank.

[0041] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the following steps:

[0042] Monitor the liquid level of the circulation tank and obtain radar data information;

[0043] Analyzing the radar data information to obtain the liquid level of the circulation tank;

[0044] Calculating the liquid volume of the circulation tank according to the liquid level height of the circulation tank;

[0045] A current monitoring event of the circulation tank is obtained based on the liquid volume of the circulation tank.

[0046] The drilling fluid level monitoring method, device, electronic device, and storage medium described above monitor the liquid level in the circulation tank using high-frequency radar, obtain radar data, and analyze the radar data to determine the liquid level in the circulation tank. After determining the liquid level, the liquid volume in the circulation tank is calculated based on the liquid level, and the current monitoring event for the circulation tank is then determined based on the liquid volume. In this way, precise measurement of the liquid level in the circulation tank using high-frequency radar effectively improves the accuracy and flexibility of measuring the liquid volume in the circulation tank, enabling timely identification of well kicks and lost circulation events. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 1 is a flow chart of a drilling fluid level monitoring method in one embodiment;

[0048] Figure 2 is a structural block diagram of a drilling fluid level monitoring device in one embodiment;

[0049] Figure 3 is a diagram of the internal structure of an electronic device in one embodiment;

[0050] Figure 4 is a schematic structural diagram of a drilling fluid level monitoring system in another embodiment;

[0051] Figure 5 is a schematic structural diagram of a fixed fence in one embodiment;

[0052] Figure 6 is a flow chart of a drilling fluid level monitoring method in another embodiment;

[0053] Figure 7 The figure is a schematic diagram showing the principle of measuring liquid level using a high-frequency radar in one embodiment. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0055] Example 1

[0056] In this embodiment, Figure 1 As shown, a drilling fluid level monitoring method is provided, which includes:

[0057] Step 110: Monitor the liquid level of the circulation tank to obtain radar data information.

[0058] In this embodiment, one or more high-frequency radars are installed above the circulation tank, and the high-frequency radar performs real-time signal acquisition to monitor the liquid level of the circulation tank. The high-frequency radar has a ranging accuracy of millimeters, and the measurement of the liquid level in the circulation tank is more accurate, so that changes in the amount of drilling fluid circulating at the bottom of the well can be displayed in a timely manner, facilitating earlier warning of the presence of overflow or leakage downhole. In some embodiments, the top of the circulation tank is mostly a steel fence structure, which is easy to disassemble. The high-frequency radar can be connected to the flange structure. After being connected to the flange structure, the high-frequency radar can be installed on the fixed fence, thereby fixing the high-frequency radar on the top of the circulation tank to monitor the liquid level of the circulation tank and obtain radar data information. The high-frequency radar monitoring liquid level height is not affected by the circulation tank structure or other ground facilities, and there is no need to change the overall structure of the circulation tank, so there is no additional cost such as modifying the circulation tank, and it can also be installed as soon as it is measured, which is convenient and economical.

[0059] Step 120: parse the radar data information to obtain the liquid level of the circulation tank.

[0060] In this embodiment, radar data information includes the time of radar wave transmission, the time of reflected radar wave, the difference frequency between the transmitted and reflected radar waves, the effective bandwidth, the target distance, the sweep period, etc. In one embodiment, the high-frequency radar performs real-time signal acquisition by operating in the modes of transmitting radar waves, reflecting radar waves, and receiving radar waves. Specifically, the high-frequency radar calculates the distance by measuring the time difference and difference frequency between the transmitted and reflected radar waves. The relationship is:

[0061]

[0062] Where, f b is the difference frequency, B is the effective bandwidth, and T is the frequency sweep period.

[0063] In addition, radar waves propagate at the speed of light c, and the time required for a round trip to the target distance D (i.e., the time difference) is calculated using the following relationship:

[0064]

[0065] Substituting formula (1) into formula (2) can obtain the actual distance D, which is:

[0066]

[0067] It should be noted that the actual distance measurement refers to the distance between the high-frequency radar and the liquid surface of the circulation tank. After calculating the actual distance measurement, the distance from the radar to the bottom of the circulation tank is obtained. The actual liquid level height is calculated based on the distance from the radar to the bottom of the circulation tank. The relationship is:

[0068] H=LD; (4)

[0069] Where L is the distance from the radar to the bottom of the circulation tank, and H is the height of the liquid level in the circulation tank.

[0070] Step 130: Calculate the liquid volume of the circulation tank according to the liquid level of the circulation tank.

[0071] In this embodiment, the liquid level is calculated by comparing the distance from the radar to the bottom of the circulation tank with the actual distance measurement, and the cross-sectional area of ​​the circulation tank is obtained. The liquid volume of the circulation tank is obtained by calculating the liquid level and the cross-sectional area of ​​the circulation tank. The relationship is:

[0072] V=HS; (5)

[0073] Where V is the liquid volume of the circulation tank and S is the cross-sectional area of ​​the circulation tank.

[0074] By substituting the liquid level height and the cross-sectional area of ​​the circulation tank into formula (5), the liquid volume of the circulation tank can be calculated.

[0075] In some embodiments, a signal processor processes the transmitted radar wave signal and the reflected radar wave signal from the high-frequency radar, converting both the transmitted radar wave signal and the reflected radar wave signal into digital signals to facilitate subsequent processing of the radar data information. Subsequently, the obtained digital signal is further processed by a calculation program to obtain the liquid level height and the liquid volume of the circulation tank (also referred to as the liquid volume of the circulation tank), and at the same time, the liquid surface curve of the circulation tank at that moment is depicted to monitor the change trend of the liquid volume of the circulation tank in real time. The propagation speed of the high-frequency radar is faster than the surging speed of the circulation tank liquid level, and during measurement, one or more radars can be used to measure the liquid level height of the circulation tank and redraw the liquid surface curve of the circulation tank at a certain moment, so that accurate measurement can be performed without being affected by the surging of the circulation tank liquid level. In this way, the occurrence of well kicks and well leaks can be effectively avoided, and safe and efficient drilling can be effectively guaranteed, thereby ensuring safe drilling and reducing the loss of manpower, material and financial resources.

[0076] Step 140: Obtain a current monitoring event of the circulation tank based on the liquid volume of the circulation tank.

[0077] In this embodiment, after obtaining the liquid volume of the circulation tank, the current monitoring event of the circulation tank is obtained based on the change in the liquid volume of the circulation tank. Here, the current monitoring event of the circulation tank is used to determine whether a well kick or a lost circulation condition occurs during the drilling process.

[0078] In the above embodiment, the liquid level of the circulation tank is monitored by a high-frequency radar to obtain radar data information, and the radar data information is analyzed to obtain the liquid level height of the circulation tank. After obtaining the liquid level height of the circulation tank, the liquid volume of the circulation tank is calculated based on the liquid level height of the circulation tank, and then the current monitoring event of the circulation tank is obtained based on the liquid volume of the circulation tank. In this way, the propagation speed of the high-frequency radar is faster than the surging speed of the liquid level in the circulation tank, and during measurement, the liquid level height of the circulation tank can be measured by one or more radars and the liquid surface curve of the circulation tank at a certain moment can be redrawn, so that accurate measurement can be performed without being affected by the surging of the liquid level in the circulation tank. This effectively improves the accuracy and flexibility of measuring the liquid volume of the circulation tank, and timely judges the occurrence of well kicks and well leaks.

[0079] In one embodiment, the current monitoring events of the circulation tank include overflow events and leakage events;

[0080] The step of obtaining the current monitoring event of the circulation tank based on the liquid volume of the circulation tank comprises:

[0081] comparing the liquid volume of the circulation tank with the initial liquid volume;

[0082] When the difference between the liquid volume of the circulation tank and the initial liquid volume is greater than a preset change threshold, determining that the current monitoring event of the circulation tank is an overflow event, and determining the difference between the liquid volume of the circulation tank and the initial liquid volume as the overflow amount;

[0083] detecting whether the overflow amount is greater than a first overflow threshold;

[0084] When the overflow amount is greater than a first overflow threshold, an overflow warning message is issued.

[0085] In this embodiment, the current monitoring event includes an overflow event and a leakage event, wherein an overflow event refers to a well kick during the drilling process, and a leakage event refers to a well leakage during the drilling process. In some embodiments, the radar data information collected by the high-frequency radar is converted into a signal and analyzed by a signal processor to obtain the liquid level in the circulation tank, and the liquid volume is calculated based on the liquid level. Subsequently, the difference between the liquid volume and the initial liquid volume is calculated. When the difference between the liquid volume of the circulation tank and the initial liquid volume is greater than a preset change threshold, it can be determined that a well kick occurred during the drilling process, and the current monitoring event of the circulation tank is determined to be an overflow event, and the difference between the liquid volume of the circulation tank and the initial liquid volume is determined as the overflow amount. Then, it is detected whether the overflow amount is greater than the first overflow threshold. When the overflow amount is greater than the first overflow threshold, an overflow warning message is issued.

[0086] In some embodiments, the preset change threshold is set to 0L. Of course, the preset change threshold can also be adjusted according to actual drilling conditions. When the overflow volume is greater than 0L, that is, the liquid volume in the circulation tank is greater than the initial liquid volume, the overflow volume continues to be monitored. When the overflow volume exceeds a first overflow threshold, an overflow warning message is issued. The overflow warning message here can be implemented via a light signal and / or an audio signal, thereby warning construction personnel to remind the pressure driller or driller and other construction personnel to prepare for well killing. In some embodiments, the first overflow threshold is set to 80L. Of course, the first overflow threshold can also be adjusted according to actual drilling conditions. When the overflow volume exceeds 80L, an overflow warning message is issued.

[0087] In one embodiment, after the step of issuing overflow warning information when the overflow amount is greater than the first overflow threshold, the method further includes:

[0088] detecting whether the overflow amount is less than or equal to a second overflow threshold, wherein the second overflow threshold is greater than the first overflow threshold;

[0089] When the overflow amount is less than or equal to a second overflow threshold, a first overflow execution event is acquired, and the execution of the first overflow execution event is controlled.

[0090] In this embodiment, when the overflow volume is detected to be greater than the first overflow threshold, an overflow warning message is issued to alert construction personnel. Furthermore, the overflow volume needs to be monitored. Therefore, the overflow volume is detected to be less than or equal to the second overflow threshold. If the overflow volume is less than or equal to the second overflow threshold, a first overflow execution event is generated and controlled to execute. Specifically, when the overflow volume is less than or equal to the second overflow threshold, the corresponding drilling equipment is controlled to use a pressure-controlled drilling method to maintain a minimal overflow without interrupting drilling. The second overflow threshold is greater than the first overflow threshold.

[0091] In some embodiments, the second overflow threshold is set to 300 L. Of course, the second overflow threshold can also be adjusted based on actual drilling conditions. When the overflow volume is less than or equal to 300 L, a first overflow execution event is acquired and controlled to execute. That is, when the overflow volume is less than or equal to the second overflow threshold, the corresponding drilling equipment is controlled to use a pressure-controlled drilling mode to maintain a slight overflow without stopping drilling.

[0092] In one embodiment, after the step of detecting whether the overflow amount is less than or equal to the second overflow threshold, the method further includes:

[0093] When the overflow amount is greater than a second overflow threshold, a second overflow execution event is acquired, and the second overflow execution event is controlled to be executed.

[0094] In this embodiment, during further monitoring of the overflow volume, if the overflow volume is detected to be greater than a second overflow threshold, a second overflow execution event is acquired and controlled to execute. Specifically, when the overflow volume is greater than the second overflow threshold, the corresponding drilling equipment is controlled to be handed over to the driller for well kill. The second overflow threshold is greater than the first overflow threshold. In some embodiments, when the overflow volume is greater than 300 L, a second overflow execution event is acquired and controlled to execute. Specifically, when the overflow volume is greater than the second overflow threshold, the corresponding drilling equipment is controlled to be handed over to the driller for well kill.

[0095] In one embodiment, after the step of comparing the liquid volume of the circulation tank with the initial liquid volume, the method further comprises:

[0096] When the difference between the liquid volume of the circulation tank and the initial liquid volume is less than a preset change threshold, determining that the current monitoring event of the circulation tank is a leakage event, and determining the difference between the liquid volume of the circulation tank and the initial liquid volume as the leakage amount;

[0097] detecting whether the leakage amount is greater than a first leakage threshold;

[0098] When the leakage amount is greater than a first leakage threshold, a leakage warning message is issued.

[0099] In this embodiment, when the difference between the liquid volume of the circulation tank and the initial liquid volume is less than a preset change threshold, it can be determined that a leak occurs during the drilling process, the current monitoring event of the circulation tank is determined to be a leak event, and the difference between the liquid volume of the circulation tank and the initial liquid volume is determined as the leak amount. Then, it is detected whether the leak amount is greater than the first leak threshold. When the leak amount is greater than the first leak threshold, a leak warning message is issued. The leak warning message here can be realized by light signals and / or sound signals, thereby warning the construction personnel. In some embodiments, the first leak threshold is set to 80L. Of course, the first leak threshold can also be adjusted according to the actual drilling situation. When the leak amount is greater than 80L, a leak warning message is issued.

[0100] In one embodiment, after the step of issuing a leakage warning message when the leakage amount is greater than a first leakage threshold, the method further includes:

[0101] detecting whether the leakage amount is less than or equal to a second leakage threshold, wherein the second leakage threshold is greater than the first leakage threshold;

[0102] When the leakage amount is less than or equal to a second leakage threshold, a first leakage execution event is acquired, and the execution of the first leakage execution event is controlled.

[0103] In this embodiment, when the leakage volume is detected to be greater than the first leakage threshold, in addition to issuing a leakage warning message to alert construction personnel, the leakage volume must also be further monitored. Therefore, the leakage volume is detected to be less than or equal to the second leakage threshold. If the leakage volume is less than or equal to the second leakage threshold, a first leakage execution event is acquired and controlled to execute. Specifically, when the leakage volume is less than or equal to the second leakage threshold, the corresponding drilling equipment is controlled to use pressure-controlled drilling to maintain low-leakage drilling without stopping.

[0104] In some embodiments, the second leakage threshold is set to 300 L. Of course, the second leakage threshold can also be adjusted based on actual drilling conditions. When the leakage volume is less than or equal to 300 L, a first leakage execution event is acquired and controlled to execute. Specifically, when the leakage volume is less than or equal to the second leakage threshold, the corresponding drilling equipment is controlled to use managed pressure drilling to maintain low-leakage drilling without stopping drilling.

[0105] In one embodiment, after the step of detecting whether the leakage amount is less than or equal to the second leakage threshold, the method further includes:

[0106] When the leakage amount is greater than a second leakage threshold, a second leakage execution event is acquired, and the second leakage execution event is controlled to be executed.

[0107] In this embodiment, during further monitoring of the leakage volume, if the leakage volume is detected to be greater than a second leakage threshold, a second leakage execution event is acquired and controlled to execute. Specifically, when the leakage volume is greater than the second leakage threshold, the corresponding drilling equipment is controlled to shut in the well or take other measures to control well loss. The second leakage threshold is greater than the first leakage threshold. In some embodiments, when the leakage volume is greater than 300 L, a second leakage execution event is acquired and controlled to execute. Specifically, when the leakage volume is greater than the second leakage threshold, the corresponding drilling equipment is controlled to shut in the well or take other measures to control well loss.

[0108] It should be understood that although Figure 1 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. In addition, Figure 1 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0109] Example 2

[0110] In this embodiment, Figure 4 As shown, a drilling fluid level monitoring system is provided, comprising: a high-frequency radar 410, an early warning analysis unit 430 and a control unit;

[0111] The control unit is used to monitor the liquid level of the circulation tank 450 through the high-frequency radar 410 to obtain radar data information; parse the radar data information to obtain the liquid level height of the circulation tank 450; calculate the liquid volume of the circulation tank 450 according to the liquid level height of the circulation tank 450 through the early warning analysis unit 430; and obtain the current monitoring event of the circulation tank 450 based on the liquid volume of the circulation tank 450.

[0112] In this embodiment, a high-frequency radar 410 is used to monitor the liquid level in the circulation tank 450, thereby generating radar data. This radar data includes information such as the time of radar wave transmission, the time of reflected radar wave, the difference frequency between the transmitted and reflected radar waves, the effective bandwidth, the target distance, and the frequency sweep period. High-frequency radar 410 offers millimeter-level ranging accuracy, enabling more precise measurement of the liquid level in the circulation tank 450. This allows for timely visualization of changes in the amount of drilling fluid circulating downhole, facilitating earlier warning of downhole overflows or leaks. The liquid level in the circulation tank 450 is determined based on the radar data and transmitted to the early warning analysis unit 430. In some embodiments, the drilling fluid level monitoring system further includes a signal processing unit 420, which is connected to the early warning analysis unit 430. Specifically, the signal processing unit 420 includes a signal processor. Furthermore, the early warning analysis unit 430 is a computer, or a device that uses a computer to analyze the liquid level in the circulation tank. The early warning and analysis unit 430 includes an overflow monitoring subunit and a leakage monitoring subunit. The signal processing unit 420 performs signal conversion and data analysis on the data collected by the high-frequency radar 410, transmitting real-time data on the liquid level in the circulation tank 450 to the early warning and analysis unit 430. When the liquid volume in the circulation tank 450 increases (i.e., the difference between the liquid volume in the circulation tank 450 and the initial liquid volume exceeds a preset change threshold), the overflow monitoring subunit enters the monitoring subunit and analyzes whether the overflow volume exceeds a first overflow threshold. If the overflow volume exceeds the first overflow threshold, an overflow warning message is issued, such as a yellow light and an alarm. This is then signaled via the alarm 440, alerting the managed pressure drilling (MPD) personnel or the driller to prepare for well kill. Subsequently, the overflow volume is further monitored. If the overflow volume is stable and the total overflow volume is less than or equal to a second overflow threshold, the relevant drilling equipment is controlled to continue drilling using managed pressure drilling (MPD) to maintain a minimal overflow. If the overflow volume exceeds the second overflow threshold, the relevant drilling equipment is controlled to be handed over to the driller for well kill.

[0113] When the liquid volume in circulation tank 450 decreases—that is, the difference between the liquid volume in circulation tank 450 and the initial liquid volume is less than a preset change threshold—the system enters the leakage monitoring subunit, where it analyzes whether the leakage exceeds a first leakage threshold. If so, a leakage warning message is issued, such as a yellow light and an alarm. The leakage is then further monitored. If the leakage is controllable and less than or equal to a second leakage threshold, the relevant drilling equipment is controlled to adopt pressure-controlled drilling to maintain minimal leakage without stopping. If the leakage exceeds the second leakage threshold, the relevant drilling equipment is controlled to shut in the well or take other measures to control well leakage.

[0114] In one embodiment, the drilling fluid level monitoring system further includes an alarm 440 , which is connected to the early warning analysis unit 430 to generate an alarm after receiving overflow early warning information or leakage early warning information.

[0115] In one embodiment, Figure 5 As shown, the drilling fluid level monitoring system also includes a fixed fence 460. The top of the circulation tank 450 is usually a steel fence structure. The fixed fence 460 can be detachably mounted on the steel fence structure on the top of the circulation tank 450. By connecting the high-frequency radar 410 to the flange structure, the high-frequency radar 410 connected to the flange structure can be installed on the fixed fence 460, thereby fixing the high-frequency radar 410 on the top of the circulation tank 450 to monitor the fluid level in the circulation tank 450 and obtain radar data information. The high-frequency radar 410 monitors the fluid level height unaffected by the structure of the circulation tank 450 or other ground facilities, and does not require the overall structure of the circulation tank 450 to be modified. Therefore, there is no additional cost such as modifying the circulation tank 450, and it can be installed as soon as the measurement is made, which is convenient and economical.

[0116] Example 3

[0117] In this embodiment, Figure 6 As shown, a drilling fluid level monitoring method is provided, comprising:

[0118] First, if Figure 7 As shown, high-frequency radar calculates distance by measuring the time difference and difference frequency between the transmitted radar wave and the reflected radar wave. The relationship is:

[0119]

[0120] Where, f b is the difference frequency, B is the effective bandwidth, and T is the frequency sweep period.

[0121] In addition, radar waves propagate at the speed of light c, and the time required for a round trip to the target distance D (i.e., the time difference) is calculated using the following relationship:

[0122]

[0123] Substituting formula (1) into formula (2) can obtain the actual distance D, which is:

[0124]

[0125] It should be noted that the actual distance measurement refers to the distance between the high-frequency radar and the liquid surface of the circulation tank. After calculating the actual distance measurement, the distance from the radar to the bottom of the circulation tank is obtained. The actual liquid level height is calculated based on the distance from the radar to the bottom of the circulation tank. The relationship is:

[0126] H=LD; (4)

[0127] Where L is the distance from the radar to the bottom of the circulation tank, and H is the height of the liquid level in the circulation tank.

[0128] Step 130: Calculate the liquid volume of the circulation tank according to the liquid level of the circulation tank.

[0129] In this embodiment, the liquid level is calculated by comparing the distance from the radar to the bottom of the circulation tank with the actual distance measurement, and the cross-sectional area of ​​the circulation tank is obtained. The liquid volume of the circulation tank is obtained by calculating the liquid level and the cross-sectional area of ​​the circulation tank. The relationship is:

[0130] V=HS; (5)

[0131] Where V is the liquid volume of the circulation tank and S is the cross-sectional area of ​​the circulation tank.

[0132] By substituting the liquid level height and the cross-sectional area of ​​the circulation tank into formula (5), the liquid volume of the circulation tank can be calculated.

[0133] In one embodiment, a high-frequency radar collects real-time signals by operating in radar wave transmission, reflection, and reception modes. A signal processing unit receives the radar wave signals, filters them, amplifies them, and converts them into digital signals. Through Fourier transform and data analysis, the liquid level data in the circulation tank is transmitted in real time to a well kick and well leakage early warning and analysis system. By monitoring the range of liquid level fluctuations in real time, the system determines whether overflow or leakage has occurred at the bottom of the well. If overflow is detected, a red light illuminates and an alarm sounds. If leakage is detected, a yellow light illuminates and an alarm sounds.

[0134] The circulating tank liquid level monitoring method of this embodiment can monitor changes in the circulating tank liquid level in real time. A high-frequency radar transmits radar waves, continuously acquiring data on the transmitted and reflected waves. Through signal conversion, Fourier transform, and data processing, the data is converted into changes in the circulating tank liquid volume. Continuous data acquisition and processing can obtain real-time liquid level measurements, thereby obtaining real-time liquid level and liquid volume data. The high-frequency radar has millimeter-level ranging accuracy, making it more accurate to measure the circulating tank liquid level. This allows for timely visualization of changes in the volume of drilling fluid circulating downhole, facilitating earlier warning of downhole overflows or leaks. Furthermore, the high-frequency radar liquid level measurement proposed by the present invention is not affected by the circulating tank structure or other surface facilities, and does not alter the overall structure of the circulating tank. It is an independent measurement system, eliminating the additional costs of modifying the circulating tank and enabling installation at the same time as the measurement, making it convenient and economical. The propagation speed of radar waves is faster than the surging speed of the circulating tank liquid level. During measurement, one or more radars can measure the circulating tank liquid level and redraw the liquid surface curve of the circulating tank at a specific moment, allowing for accurate measurement without being affected by the surging of the circulating tank liquid level.

[0135] In this embodiment, Figure 4As shown, a drilling fluid level monitoring system is provided, including: a fixed fence 460, a high-frequency radar 410, a signal processing unit 420, an early warning analysis unit 430 and an alarm 440. The top of the circulation tank 450 is a steel fence structure, which is easy to disassemble. Figure 5 As shown, the fence structure designed in this embodiment can be directly replaced with the on-site fence plate, and there is no need to cut the original structure or perform other processes. The flange structure connected to the high-frequency radar 410 on the fixed fence 460 can be directly connected to the high-frequency radar 410 and fixed on the top of the circulation tank 450.

[0136] Signal processing unit 420 converts and analyzes radar data collected by high-frequency radar 410, transmitting real-time data on the liquid level in circulation tank 450 to early warning analysis unit 430. When the liquid volume in circulation tank 450 increases, the overflow monitoring module analyzes whether the overflow exceeds 80L. If so, a warning signal is issued, a yellow light illuminates, an alarm sounds, and an alarm is sounded via alarm 440, alerting the managed pressure driller or driller to prepare for well kill. Further monitoring of the overflow volume is performed. If the overflow volume is stable and the total overflow volume does not exceed 300L, managed pressure drilling is adopted to maintain a minimal overflow without interrupting drilling. If the overflow volume exceeds 300L, the well is killed by the driller. When the 450 liquid volume in the circulation tank decreases, the system enters the well leakage monitoring and processing module. When the leakage exceeds 80L, a warning is issued, a yellow light is on, and an alarm sounds. If the leakage is controllable and does not exceed 300L, pressure-controlled drilling is used to maintain micro-leakage drilling without stopping. If the leakage exceeds 300L, the well is shut in or other measures are taken to control well leakage.

[0137] The drilling fluid level monitoring system in this embodiment integrates kick and lost circulation monitoring into a single program. Based on the accuracy of monitoring data, a micro-flow overflow and loss alarm program is implemented, providing timely warnings of complex bottomhole situations. Responsibilities for overflow and loss are also divided based on the degree of fluid level fluctuation in the circulating tank 450. Within a controllable overflow range, drilling can continue despite micro-leakage and overflow. When the flow rate fluctuates significantly, the driller is requested to perform well killing or other lost circulation measures. Different alarm colors are also set based on the increase or decrease in the circulating tank 450 fluid level, allowing monitoring personnel to quickly identify complex bottomhole situations.

[0138] In one embodiment, by adjusting the frequency of the high-frequency radar 410, a reasonable frequency is set according to the measurement accuracy requirements, and the high-frequency radar 410 is connected to the signal processing unit 420 on the ground, the signal processing unit 420 is connected to the early warning analysis unit 430, and the early warning analysis unit 430 is connected to the alarm 440 on the ground. The entire measuring machine alarm device is tested to ensure that the high-frequency radar 410, the early warning analysis unit 430, and the alarm 440 are all in the correct working state, and then the high-frequency radar 410 fixed fence 460 is used to replace the circulation tank 450 fence for height monitoring.

[0139] The judgment steps are as follows: the signal processing unit 420 processes the transmission wave and reflection wave signals from the high-frequency radar 410, converts the wave signals into digital signals, and further processes the digital signals through a calculation program to obtain the liquid level height and liquid volume of the circulation tank 450, and at the same time depicts the liquid surface curve of the circulation tank 450 at that moment, and monitors the change trend of the liquid volume of the circulation tank 450 in real time. When the change range of the liquid volume of the circulation tank 450 is within ±80L, it is regarded as an acceptable change range. When the liquid volume change range is within ±300L, an alarm is issued, and different alarm colors are displayed according to the increase or decrease of the liquid volume. The drilling can be carried out without stopping the drilling in a micro-leakage or micro-overflow state using pressure control technology. When the liquid volume change range is outside ±300L, it is regarded as uncontrollable overflow or leakage, and must be handed over to the driller for well pressure or well leakage treatment.

[0140] In this embodiment, a high-frequency radar 410 is installed to perform contactless, real-time liquid level measurement of the circulating tank 450 independently of the circulating tank 450 structure, achieving millimeter-level accuracy. An early warning analysis unit 430 is also designed. Based on the range of liquid level variations in the circulating tank 450 obtained through high-precision data measurement and processing, different alarm modes are configured, along with a reasonable range of variation that requires no action, a reasonable range within which pressure control equipment can be used for continuous drilling, and a reasonable range within which complex incidents such as kicks and lost circulation require driller intervention. Operators experiencing different degrees of kicks and lost circulation are categorized to ensure clear responsibilities and division of labor.

[0141] Example 4

[0142] In this embodiment, Figure 2 As shown, a drilling fluid level monitoring device is provided, comprising:

[0143] The data acquisition module 210 is used to monitor the liquid level of the circulation tank and obtain radar data information;

[0144] An analysis module 220 is used to analyze the radar data information to obtain the liquid level of the circulation tank;

[0145] A calculation module 230 is configured to calculate the liquid volume of the circulation tank according to the liquid level of the circulation tank;

[0146] The event acquisition module 240 is configured to obtain a current monitoring event of the circulation tank based on the liquid volume of the circulation tank.

[0147] In one embodiment, the event acquisition module 240 includes:

[0148] a comparing unit, configured to compare the liquid volume of the circulation tank with the initial liquid volume;

[0149] a first determining unit, configured to determine, when a difference between the liquid volume of the circulation tank and the initial liquid volume is greater than a preset change threshold, that a current monitoring event of the circulation tank is an overflow event, and determine the difference between the liquid volume of the circulation tank and the initial liquid volume as an overflow amount;

[0150] a first overflow detection unit, configured to detect whether the overflow amount is greater than a first overflow threshold;

[0151] The overflow warning unit is used to issue an overflow warning message when the overflow amount is greater than a first overflow threshold.

[0152] In one embodiment, the event acquisition module 240 further includes:

[0153] a second overflow detection unit, configured to detect whether the overflow amount is less than or equal to a second overflow threshold, wherein the second overflow threshold is greater than the first overflow threshold;

[0154] The first overflow execution unit is configured to obtain a first overflow execution event and control the execution of the first overflow execution event when the overflow amount is less than or equal to a second overflow threshold.

[0155] In one embodiment, the event acquisition module 240 further includes:

[0156] The second overflow execution unit is configured to obtain a second overflow execution event and control the execution of the second overflow execution event when the overflow amount is greater than a second overflow threshold.

[0157] In one embodiment, the event acquisition module 240 further includes:

[0158] a second determining unit, configured to determine, when a difference between the liquid volume of the circulation tank and the initial liquid volume is less than a preset change threshold, that a current monitoring event of the circulation tank is a leakage event, and determine the difference between the liquid volume of the circulation tank and the initial liquid volume as a leakage amount;

[0159] a first leakage detection unit, configured to detect whether the leakage amount is greater than a first leakage threshold;

[0160] The leakage warning unit is used to issue a leakage warning message when the leakage amount is greater than a first leakage threshold.

[0161] In one embodiment, the event acquisition module 240 further includes:

[0162] a second leakage detection unit, configured to detect whether the leakage amount is less than or equal to a second leakage threshold, wherein the second leakage threshold is greater than the first leakage threshold;

[0163] The first missed execution unit is configured to obtain a first missed execution event and control the execution of the first missed execution event when the missed amount is less than or equal to a second missed threshold.

[0164] In one embodiment, the event acquisition module 240 further includes:

[0165] The second missed execution unit is configured to obtain a second missed execution event and control the execution of the second missed execution event when the missed amount is greater than a second missed threshold.

[0166] The specific definition of the drilling fluid level monitoring device can be found in the definition of the drilling fluid level monitoring method above and will not be repeated here. Each unit in the aforementioned drilling fluid level monitoring device can be implemented in whole or in part through software, hardware, or a combination thereof. Each of the aforementioned units can be embedded in or independent of a processor in an electronic device in hardware form, or can be stored in a memory in the electronic device in software form, so that the processor can call and execute the corresponding operations of each of the aforementioned units.

[0167] Example 5

[0168] In this embodiment, an electronic device is provided. Its internal structure diagram can be shown as follows: Figure 3 As shown. The electronic device includes a processor, a memory, a network interface, a display screen and an input device connected via a system bus. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program, and the non-volatile storage medium is deployed with a database, which is used to store radar data information. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The network interface of the electronic device is used to communicate with other electronic devices that have deployed application software. When the computer program is executed by the processor, a drilling fluid level monitoring method is implemented. The display screen of the electronic device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the electronic device can be a touch layer covering the display screen, or a button, trackball or touchpad provided on the electronic device housing, or an external keyboard, touchpad or mouse.

[0169] Those skilled in the art will understand that Figure 3 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the electronic device to which the solution of the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0170] In one embodiment, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0171] Monitor the liquid level of the circulation tank and obtain radar data information;

[0172] Analyzing the radar data information to obtain the liquid level of the circulation tank;

[0173] Calculating the liquid volume of the circulation tank according to the liquid level height of the circulation tank;

[0174] A current monitoring event of the circulation tank is obtained based on the liquid volume of the circulation tank.

[0175] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0176] comparing the liquid volume of the circulation tank with the initial liquid volume;

[0177] When the difference between the liquid volume of the circulation tank and the initial liquid volume is greater than a preset change threshold, determining that the current monitoring event of the circulation tank is an overflow event, and determining the difference between the liquid volume of the circulation tank and the initial liquid volume as the overflow amount;

[0178] detecting whether the overflow amount is greater than a first overflow threshold;

[0179] When the overflow amount is greater than a first overflow threshold, an overflow warning message is issued.

[0180] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0181] detecting whether the overflow amount is less than or equal to a second overflow threshold, wherein the second overflow threshold is greater than the first overflow threshold;

[0182] When the overflow amount is less than or equal to a second overflow threshold, a first overflow execution event is acquired, and the execution of the first overflow execution event is controlled.

[0183] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0184] When the overflow amount is greater than a second overflow threshold, a second overflow execution event is acquired, and the second overflow execution event is controlled to be executed.

[0185] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0186] When the difference between the liquid volume of the circulation tank and the initial liquid volume is less than a preset change threshold, determining that the current monitoring event of the circulation tank is a leakage event, and determining the difference between the liquid volume of the circulation tank and the initial liquid volume as the leakage amount;

[0187] detecting whether the leakage amount is greater than a first leakage threshold;

[0188] When the leakage amount is greater than a first leakage threshold, a leakage warning message is issued.

[0189] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0190] detecting whether the leakage amount is less than or equal to a second leakage threshold, wherein the second leakage threshold is greater than the first leakage threshold;

[0191] When the leakage amount is less than or equal to a second leakage threshold, a first leakage execution event is acquired, and the execution of the first leakage execution event is controlled.

[0192] Example 6

[0193] In this embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0194] Monitor the liquid level of the circulation tank and obtain radar data information;

[0195] Analyzing the radar data information to obtain the liquid level of the circulation tank;

[0196] Calculating the liquid volume of the circulation tank according to the liquid level height of the circulation tank;

[0197] A current monitoring event of the circulation tank is obtained based on the liquid volume of the circulation tank.

[0198] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0199] comparing the liquid volume of the circulation tank with the initial liquid volume;

[0200] When the difference between the liquid volume of the circulation tank and the initial liquid volume is greater than a preset change threshold, determining that the current monitoring event of the circulation tank is an overflow event, and determining the difference between the liquid volume of the circulation tank and the initial liquid volume as the overflow amount;

[0201] detecting whether the overflow amount is greater than a first overflow threshold;

[0202] When the overflow amount is greater than a first overflow threshold, an overflow warning message is issued.

[0203] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0204] detecting whether the overflow amount is less than or equal to a second overflow threshold, wherein the second overflow threshold is greater than the first overflow threshold;

[0205] When the overflow amount is less than or equal to a second overflow threshold, a first overflow execution event is acquired, and the execution of the first overflow execution event is controlled.

[0206] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0207] When the overflow amount is greater than a second overflow threshold, a second overflow execution event is acquired, and the second overflow execution event is controlled to be executed.

[0208] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0209] When the difference between the liquid volume of the circulation tank and the initial liquid volume is less than a preset change threshold, determining that the current monitoring event of the circulation tank is a leakage event, and determining the difference between the liquid volume of the circulation tank and the initial liquid volume as the leakage amount;

[0210] detecting whether the leakage amount is greater than a first leakage threshold;

[0211] When the leakage amount is greater than a first leakage threshold, a leakage warning message is issued.

[0212] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0213] detecting whether the leakage amount is less than or equal to a second leakage threshold, wherein the second leakage threshold is greater than the first leakage threshold;

[0214] When the leakage amount is less than or equal to a second leakage threshold, a first leakage execution event is acquired, and the execution of the first leakage execution event is controlled.

[0215] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0216] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0217] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A drilling fluid level monitoring method, characterized in that: include: Monitor the liquid level of the circulation tank and obtain radar data information; Analyzing the radar data information to obtain the liquid level of the circulation tank; Calculating the liquid volume of the circulation tank according to the liquid level height of the circulation tank; A current monitoring event of the circulation tank is obtained based on the liquid volume of the circulation tank.

2. The drilling fluid level monitoring method according to claim 1, characterized in that: The current monitoring events of the circulation tank include overflow events and leakage events; The step of obtaining the current monitoring event of the circulation tank based on the liquid volume of the circulation tank includes: comparing the liquid volume of the circulation tank with the initial liquid volume; When the difference between the liquid volume of the circulation tank and the initial liquid volume is greater than a preset change threshold, determining that the current monitoring event of the circulation tank is an overflow event, and determining the difference between the liquid volume of the circulation tank and the initial liquid volume as the overflow amount; detecting whether the overflow amount is greater than a first overflow threshold; When the overflow amount is greater than a first overflow threshold, an overflow warning message is issued.

3. The drilling fluid level monitoring method according to claim 2, characterized in that: After the step of issuing overflow warning information when the overflow amount is greater than the first overflow threshold, the method further includes: detecting whether the overflow amount is less than or equal to a second overflow threshold, wherein the second overflow threshold is greater than the first overflow threshold; When the overflow amount is less than or equal to a second overflow threshold, a first overflow execution event is acquired, and the execution of the first overflow execution event is controlled.

4. The drilling fluid level monitoring method according to claim 3, characterized in that: After the step of detecting whether the overflow amount is less than or equal to the second overflow threshold, the method further includes: When the overflow amount is greater than a second overflow threshold, a second overflow execution event is acquired, and the second overflow execution event is controlled to be executed.

5. The drilling fluid level monitoring method according to any one of claims 2 to 4, characterized in that: After the step of comparing the liquid volume of the circulation tank with the initial liquid volume, the method further comprises: When the difference between the liquid volume of the circulation tank and the initial liquid volume is less than a preset change threshold, determining that the current monitoring event of the circulation tank is a leakage event, and determining the difference between the liquid volume of the circulation tank and the initial liquid volume as the leakage amount; detecting whether the leakage amount is greater than a first leakage threshold; When the leakage amount is greater than a first leakage threshold, a leakage warning message is issued.

6. The drilling fluid level monitoring method according to claim 5, characterized in that: After the step of issuing a leakage warning message when the leakage amount is greater than a first leakage threshold, the method further includes: detecting whether the leakage amount is less than or equal to a second leakage threshold, wherein the second leakage threshold is greater than the first leakage threshold; When the leakage amount is less than or equal to a second leakage threshold, a first leakage execution event is acquired, and the execution of the first leakage execution event is controlled.

7. A drilling fluid level monitoring system, characterized in that: include: High-frequency radar, early warning analysis unit, and control unit; The control unit is used to monitor the liquid level of the circulation tank through the high-frequency radar to obtain radar data information; Analyzing the radar data information to obtain the liquid level of the circulation tank; The early warning analysis unit calculates the liquid volume of the circulation tank according to the liquid level of the circulation tank; and obtains the current monitoring event of the circulation tank based on the liquid volume of the circulation tank.

8. A drilling fluid level monitoring device, characterized in that: include: Data acquisition module, used to monitor the liquid level of the circulation tank and obtain radar data information; An analysis module, configured to analyze the radar data information to obtain the liquid level of the circulation tank; a calculation module, configured to calculate the liquid volume of the circulation tank according to the liquid level of the circulation tank; An event acquisition module is used to obtain a current monitoring event of the circulation tank based on the liquid volume of the circulation tank.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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