Experimental system for positioning out-of-tolerance flowmeter and detection method for out-of-tolerance flowmeter

Abstract

The invention discloses an experiment system for positioning an out-of-tolerance flow meter and a detection method for the out-of-tolerance flow meter, and the method comprises the steps: obtaining a detection task of the out-of-tolerance flow meter, and enabling the detection task of the out-of-tolerance flow meter to carry a to-be-detected target branch line; current actual working condition parameters of the target branch line are obtained, and the actual working condition parameters comprise the pressure, the flow and the valve opening degree of the target branch line; inputting the actual working condition parameters into a pre-fitted objective function to obtain a calculation result; the calculation result is matched with preset data, and under the condition that the calculation result is not matched with the preset data, the out-of-tolerance flow meter corresponding to the target branch line is determined. According to the system for positioning the out-of-tolerance flow meter, the working condition of a water injection pipe network can be simulated, the working condition parameters of the main line can be conveniently calculated according to the working condition parameters of the branch line subsequently, the working condition parameters of the main line are compared with water injection production data, the flow meter with the error exceeding the standard can be quickly positioned, and therefore the working efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of digital automatic control equipment for oil fields, and in particular to an experimental system for positioning an over-tolerance flowmeter and a detection method for the over-tolerance flowmeter. Background Art

[0002] Currently, oil field production basically adopts water injection development. In this process, the basis of fine development is injection-production analysis, and the role of surface water injection volume measurement is to provide first-hand data for this analysis.

[0003] As flowmeters age, the effects of harsh operating conditions such as high pressure, corrosion, and scaling on the instrument's sensor components gradually accumulate. In one oilfield, nearly a quarter of flowmeters experienced errors exceeding 10%. Furthermore, even small leaks in certain locations were being counted as injected water. Clearly, these conditions no longer met the requirements for refined reservoir management.

[0004] To ensure measurement accuracy, flowmeters exceeding the allowable error range (i.e., out-of-tolerance flowmeters) must be identified and inspected to determine whether they need repair or replacement. The obvious approach is to perform on-site calibration measurements, but the pipeline lacks space for a new flowmeter, requiring the use of a clamp-on (or externally mounted) ultrasonic flowmeter. The measurement error of this type of flowmeter is dependent on the installation method, measurement point selection, pipeline parameters, and probe installation distance, making it difficult to find a suitable measurement point on-site.

[0005] Even if all adverse effects could be overcome, direct testing still faces economic challenges. An oilfield can have over 5,000 injection wells, sometimes as few as 1,000, spread over a wide area and spaced far apart. On-site testing would require enormous manpower and resources, and take a long time, resulting in low efficiency and poor economic returns. Regular instrument replacement might be preferable. Summary of the Invention

[0006] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides an experimental system for locating an out-of-tolerance flowmeter and a detection method for an out-of-tolerance flowmeter.

[0007] According to one aspect of an embodiment of the present application, an experimental system for locating an out-of-tolerance flowmeter is provided. The implementation system uses the pressure, valve opening, and flow rate of a water distribution room as modeling objects and is built based on the modeling objects and the topological structure of the water distribution room. The experimental system includes a main line and multiple branches connected to the main line, wherein the main line is used to represent the water supply pipeline of the water distribution room, and the branch lines are used to represent the pipelines between the main line and each wellhead. The target branch line with the out-of-tolerance flowmeter is determined by simulating the actual operating parameters of each branch line, and the actual operating parameters include the pressure, flow and valve opening of the target branch line.

[0008] Furthermore, the trunk line is equipped with a water tank, a water pump and a first flow meter, and the branch line is equipped with a pipeline pressure drop simulation unit, a wellhead pressure simulation unit, an electric valve and a second flow meter; The output end of the water pump discharges water into each branch line through the main line, and simulates the pressure drop of the water discharged into the branch line and adjusts it through the pipeline pressure drop simulation unit deployed on each branch line, and simulates the wellhead pressure of the water discharged into the branch line through the wellhead pressure simulation unit and discharges it. The water discharged from each branch line enters the water tank.

[0009] Furthermore, the pipeline pressure drop simulation unit includes: a first valve combination and a first pressure gauge, wherein the first valve combination includes a first valve and a second valve, and the first valve combination includes a first valve and a second valve for simulating the water flow pressure drop of the branch line, and the first pressure gauge is arranged between the first valve and the second valve.

[0010] Furthermore, the wellhead pressure simulation unit includes: a second valve combination and a second pressure gauge, the second pressure gauge is connected to the flow meter, the second valve combination includes a third valve and a fourth valve, the third valve and the fourth valve are used to simulate the water flow pressure at the wellhead.

[0011] Furthermore, the input end of the pipeline pressure drop simulation unit is connected to the first flow meter on the trunk line, the output end of the pipeline pressure drop simulation unit is connected to the electric valve, the electric valve is connected to the second flow meter, and the second flow meter is connected to the input of the wellhead pressure simulation unit.

[0012] According to another aspect of the embodiments of the present application, a method for detecting an out-of-tolerance flowmeter is provided. The method is applied to the above-mentioned experimental system and includes: Acquire a detection task of an ultra-tolerance flowmeter, wherein the detection task of the ultra-tolerance flowmeter carries a target branch line to be detected; Acquiring current actual operating parameters of the target branch line, wherein the actual operating parameters include pressure, flow, and valve opening of the target branch line; Inputting the actual operating condition parameters into a pre-fitted objective function to obtain a calculation result, wherein the calculation result includes the main line operating condition parameters, and the objective function is obtained by fitting the main line parameters as dependent variables and the branch line parameters as independent variables; The calculation result is matched with the preset data, and when the calculation result does not match the preset data, the out-of-tolerance flowmeter corresponding to the target branch line is determined.

[0013] Furthermore, the method further comprises: Collect historical operating parameters corresponding to the main line and each branch line, wherein the historical operating parameters include: main line parameters and branch line parameters, the main line parameters include main line pressure and main line flow, and the branch line parameters include branch line pressure, branch line flow and valve opening; The main line parameters are used as dependent variables and the branch line parameters are used as independent variables for fitting to obtain the objective function.

[0014] Furthermore, matching the calculation result with preset data, and determining the out-of-tolerance flowmeter corresponding to the target branch line when the calculation result does not match the preset data, includes: Obtaining a data range corresponding to the preset data; matching the calculation result with the data range; If the calculation result exceeds the data range, the target branch line's reverse working condition parameters are reversed using the target function; The reverse working condition parameters are compared with the actual working condition parameters to determine the out-of-tolerance flowmeter corresponding to the target branch line.

[0015] According to another aspect of the embodiment of the present application, a detection device for an out-of-tolerance flowmeter is provided, comprising: A first acquisition module is configured to acquire a detection task of an ultra-tolerance flowmeter, wherein the detection task of the ultra-tolerance flowmeter carries a target branch line to be detected; A second acquisition module is configured to acquire current actual operating parameters of the target branch line, wherein the actual operating parameters include branch line pressure, branch line flow, and valve opening of the target branch line; An input module, configured to input the actual operating condition parameters into a pre-fitted objective function to obtain a calculation result, wherein the calculation result includes the main line operating condition parameters, and the objective function is obtained by fitting the main line parameters as dependent variables and the branch line parameters as independent variables; The processing module is used to match the calculation result with the preset data, and when the calculation result does not match the preset data, determine the out-of-tolerance flowmeter corresponding to the target branch line.

[0016] According to another aspect of an embodiment of the present application, a storage medium is further provided, which includes a stored program, and the above steps are executed when the program is run.

[0017] According to another aspect of an embodiment of the present application, an electronic device is also provided, including a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; wherein: the memory is used to store computer programs; the processor is used to execute the steps in the above method by running the program stored in the memory.

[0018] An embodiment of the present application also provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the steps in the above method.

[0019] The above-mentioned technical solution provided by the embodiment of the present application has the following advantages compared with the existing technology: the system for locating out-of-tolerance flowmeters proposed in the embodiment of the present application can simulate the working conditions of the water injection network, facilitate the subsequent calculation of the main line operating parameters based on the operating parameters of the branch line, and compare the main line operating parameters with the water injection production data, so as to quickly locate the flowmeter with excessive error, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 A schematic diagram of the topological structure of the water distribution room provided in an embodiment of the present application; Figure 2 A structural diagram of a system for positioning an out-of-tolerance flowmeter provided in an embodiment of the present application; Figure 3 A flow chart of a method for detecting an out-of-tolerance flowmeter provided in an embodiment of the present application; Figure 4 A block diagram of a detection device for an out-of-tolerance flowmeter provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another similar entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0025] The present invention provides an experimental system for locating an out-of-tolerance flowmeter and a method for detecting an out-of-tolerance flowmeter. The method provided in the present invention can be applied to any desired electronic device, such as a server or terminal. For ease of description, the method is referred to as an electronic device.

[0026] Example 1 According to one aspect of an embodiment of the present application, an experimental system for locating an out-of-tolerance flowmeter is provided. The experimental system uses the pressure, valve opening, and flow rate of a water distribution room as modeling objects and is built based on the modeling objects and the topological structure of the water distribution room; The experimental system includes a main line and multiple branches connected to the main line. The main line is used to represent the water supply pipeline in the water distribution room, and the branch line is used to represent the pipeline between the main line and each wellhead. The target branch line with the out-of-tolerance flowmeter is determined by simulating the actual operating parameters of each branch line. The actual operating parameters include the branch line pressure, branch line flow and valve opening of the target branch line.

[0027] It should be noted that the topological structure of the water distribution room is as follows: Figure 1As shown, the main water pipe that carries water from a water distribution room is called the trunk line, which has high pressure and flow. The water pipes branching from the trunk line to the wellhead are called branches, which have lower pressure and flow. Each branch line has corresponding instruments and valves. There are multiple branches, and the pressure and flow of each branch line vary greatly due to different water injection requirements, and they may sometimes be closed. Based on this, the model of a water distribution room is a topology with a trunk line and several branches.

[0028] like Figure 2 As shown, the experimental system includes: a water tank, a water pump and a first flow meter are deployed on the main line, and a pipeline pressure drop simulation unit, a wellhead pressure simulation unit 5, an electric valve and a second flow meter are deployed on each branch line; wherein, the output end of the water pump discharges water into each branch line through the main line, and the pipeline pressure drop simulation unit deployed on each branch line simulates the pressure drop of the water discharged into the branch line and adjusts it, and the wellhead pressure simulation unit simulates the wellhead pressure of the water discharged into the branch line and discharges it, and the water discharged from each branch line enters the water tank.

[0029] In addition, the embodiments of the present application are not targeted at a single instrument, but rather take the parameters of a water distribution room, such as the pipelines and instruments, as the modeling objects and extract their topological structure. The established system has the same topological structure of the trunk line, branch line, instruments, etc., and the same number of them. Since it is necessary to simulate different water distribution room operating conditions, the pressure drop is adjusted by controlling the opening of the valve at the front end of the branch line to simulate the actual operating conditions. The valve opening at the back end of the branch line is also controlled to maintain a certain pressure to simulate the actual pressure at the wellhead.

[0030] In an embodiment of the present application, a pipeline pressure drop simulation unit includes: a first valve combination and a first pressure gauge, wherein the first valve combination includes a first valve and a second valve, and the first valve combination includes the first valve and the second valve for simulating the water flow pressure drop of the branch line, and the first pressure gauge is arranged between the first valve and the second valve.

[0031] In the implementation of this application, Figure 2 The valve contained in the dotted box at the front end of the branch line is used to simulate the pressure drop. The pressure drop is simulated through valve No. ① (the first valve), pressure gauge No. ② (the first pressure gauge) is the pressure at the front end of the branch line, and valve No. ③ (the second valve) and the third valve are used for fine-tuning.

[0032] In an embodiment of the present application, the wellhead pressure simulation unit includes: a second valve combination and a second pressure gauge, the second pressure gauge is connected to the flow meter, the second valve combination includes a third valve and a fourth valve, the third valve and the fourth valve are used to simulate the water flow pressure at the wellhead.

[0033] In the embodiments of this application, Figure 2As shown in the figure, pressure gauge No. 4 (the second pressure gauge) is the wellhead pressure, valve No. 5 (the third valve) and valve No. 6 (the fourth valve) are used to maintain a certain pressure to simulate the wellhead pressure. The use of two valves is to minimize the pressure impact of the summary pipeline and enable rapid adjustment.

[0034] In an embodiment of the present application, the input end of the pipeline pressure drop simulation unit is connected to the first flow meter on the trunk line, the output end of the pipeline pressure drop simulation unit is connected to the electric valve, the electric valve is connected to the second flow meter, and the second flow meter is connected to the input of the wellhead pressure simulation unit.

[0035] The purpose of the system provided in this embodiment is to simulate the operating conditions of a water distribution room, read the corresponding operating parameters of the system, substitute these parameters into a pre-fitted function, and compare the results to determine whether they exceed the allowable error range. If so, the instrument parameters of each branch line are reversed and calculated to determine which branch line has the instrument problem, thereby locating the out-of-tolerance flowmeter.

[0036] Example 2 According to one aspect of the embodiments of the present application, a method embodiment of a method for detecting an out-of-tolerance flowmeter is provided. Figure 3 A flow chart of a detection method for an out-of-tolerance flowmeter provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the method includes: Step S11 : obtaining a detection task of the ultra-tolerance flowmeter, wherein the detection task of the ultra-tolerance flowmeter carries a target branch line to be detected.

[0037] The method provided in the embodiment of the present application is applied to the above system. Specifically, the detection task of the over-tolerance flowmeter may be assigned by a staff member, and the detection task of the over-tolerance flowmeter may carry multiple target branches to be detected.

[0038] Step S12: obtaining the current actual operating parameters of the target branch line.

[0039] In the embodiment of the present application, the actual operating parameters include: pressure, flow and valve opening of the target branch line.

[0040] In step S13, the actual operating parameters are input into the pre-fitted objective function to obtain calculation results, wherein the calculation results include the main line operating parameters, and the objective function is obtained by fitting the main line parameters as dependent variables and the branch line parameters as independent variables.

[0041] In an embodiment of the present application, the method also includes: collecting historical operating parameters corresponding to the main line and each branch line, wherein the historical operating parameters include: main line parameters and branch line parameters, the main line parameters include main line pressure and main line flow, and the branch line parameters include branch line pressure, branch line flow and valve opening; fitting the main line parameters as dependent variables and the branch line parameters as independent variables to obtain the objective function.

[0042] Specifically, water flows from the main line to the branch line and then into the injection well. The main line parameters are the input, and the branch line parameters are the output. If the main line parameters are used as the independent variables of the function and the branch line parameters as the dependent variables, it is obviously difficult to establish a suitable function. Therefore, the embodiment of the present application uses the main line parameters as the dependent variables and the branch line parameters as the independent variables to perform function fitting.

[0043] That is, let the main pressure and main flow be and The parameters of the first branch line are branch line pressure, branch line flow, and valve opening, respectively. 、 and The parameters of the second branch line are branch line pressure, branch line flow, and valve opening, respectively. 、 and , until 、 and , then the function is: .

[0044] Based on this, function fitting is performed using the database established through data collection. Later, when used, the actual operating parameters of the branch line can be directly input into the objective function to obtain the calculation results, which include the main line operating parameters, such as the flow rate and pressure of the main line.

[0045] Step S14: Match the calculation result with the preset data. If the calculation result does not match the preset data, determine the out-of-tolerance flowmeter corresponding to the target branch line.

[0046] In an embodiment of the present application, the calculation result is matched with the preset data. If the calculation result does not match the preset data, the out-of-tolerance flowmeter corresponding to the target branch is determined, including: obtaining the data range corresponding to the preset data; matching the calculation result with the data range; if the calculation result exceeds the data range, using the objective function to infer the reverse operating parameters of the target branch; comparing the reverse operating parameters with the actual operating parameters to determine the out-of-tolerance flowmeter corresponding to the target branch.

[0047] Specifically, the actual working condition parameters of each branch are substituted into the fitted function as independent variables to obtain the corresponding calculation results. , and preset data If it exceeds the allowed data range, the fitting function is used to reversely infer the value of each branch line. , reverse the parameters of one branch at a time, such as , then take the other parameters as known quantities and calculate , and the current Compare and judge, and calculate the second and third branches in turn until the out-of-tolerance flowmeter is found.

[0048] It should be noted that in the function, pressure, opening and flow all have an impact, but the actual situation is that the error of the pressure gauge is very small. This method can obviously determine whether the valve opening is out of tolerance, but the main purpose is to locate the out-of-tolerance flowmeter, and the judgment of valve opening is an additional function.

[0049] The system for locating out-of-tolerance flowmeters proposed in the embodiment of the present application can simulate the working conditions of the water injection network, facilitate the subsequent calculation of the main line operating parameters based on the branch line operating parameters, and compare the main line operating parameters with the water injection production data, so as to quickly locate the flowmeter with excessive error, thereby improving work efficiency.

[0050] Example 3 Figure 4 This is a block diagram of a detection device for an out-of-tolerance flowmeter provided in an embodiment of the present application. The device can be implemented as part or all of an electronic device through software, hardware, or a combination of both. Figure 4 As shown, the device includes: A first acquisition module 51 is configured to acquire a detection task of an ultra-tolerance flowmeter, wherein the detection task of the ultra-tolerance flowmeter carries a target branch line to be detected; The second acquisition module 52 is used to obtain the current actual operating parameters of the target branch line, wherein the actual operating parameters include the pressure, flow rate and valve opening of the target branch line; An input module 53 is used to input actual operating parameters into a pre-fitted objective function to obtain calculation results, wherein the calculation results include main line operating parameters. The objective function is obtained by fitting the main line parameters as dependent variables and the branch line parameters as independent variables. The processing module 54 is configured to match the calculation result with the preset data, and determine the out-of-tolerance flowmeter corresponding to the target branch line when the calculation result does not match the preset data.

[0051] In an embodiment of the present application, the device also includes: an acquisition module for collecting historical operating parameters corresponding to the main line and each branch line, wherein the historical operating parameters include: main line parameters and branch line parameters, the main line parameters include main line pressure and main line flow, and the branch line parameters include branch line pressure, branch line flow and valve opening; the main line parameters are used as dependent variables and the branch line parameters are used as independent variables for fitting to obtain the objective function.

[0052] In an embodiment of the present application, a processing module is used to obtain a data range corresponding to preset data; match the calculation result with the data range; when the calculation result exceeds the data range, the objective function is used to reversely infer the reverse operating parameters of the target branch; the reverse operating parameters are compared with the actual operating parameters to determine the out-of-tolerance flowmeter corresponding to the target branch.

[0053] The present application also provides an electronic device, such as Figure 5 As shown, the electronic device may include: a processor 1501 , a communication interface 1502 , a memory 1503 and a communication bus 1504 , wherein the processor 1501 , the communication interface 1502 , and the memory 1503 communicate with each other via the communication bus 1504 .

[0054] Memory 1503, used for storing computer programs; The processor 1501 is configured to implement the steps of the above embodiment when executing the computer program stored in the memory 1503 .

[0055] The communication bus mentioned in the terminal can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is used in the figure, but this does not mean that there is only one bus or only one type of bus.

[0056] The communication interface is used for communication between the above terminal and other devices.

[0057] The memory may include random access memory (RAM) or non-volatile memory, such as at least one disk storage. Alternatively, the memory may be at least one storage device located away from the processor.

[0058] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.

[0059] In another embodiment provided by the present application, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute any of the methods described in the above embodiments.

[0060] In another embodiment provided by the present application, a computer program product including instructions is also provided, which, when executed on a computer, enables the computer to execute any of the methods described in the above embodiments.

[0061] In the above embodiments, all or part of the embodiments can be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., a floppy disk, hard disk, tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive).

[0062] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the scope of protection of the present application.

[0063] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An experimental system for positioning an out-of-tolerance flowmeter, characterized in that: The implementation system takes the pressure, valve opening and flow of the water distribution room as modeling objects and is built based on the modeling objects and the topological structure of the water distribution room; The experimental system includes a main line and multiple branches connected to the main line, wherein the main line is used to represent the water supply pipeline of the water distribution room, and the branch lines are used to represent the pipelines between the main line and each wellhead. The target branch line with the out-of-tolerance flowmeter is determined by simulating the actual operating parameters of each branch line. The actual operating parameters include the branch line pressure, branch line flow and valve opening of the target branch line.

2. The system according to claim 1, wherein: The trunk line is equipped with a water tank, a water pump and a first flow meter, and the branch line is equipped with a pipeline pressure drop simulation unit, a wellhead pressure simulation unit, an electric valve and a second flow meter; The output end of the water pump discharges water into each branch line through the main line, and simulates the pressure drop of the water discharged into the branch line and adjusts it through the pipeline pressure drop simulation unit deployed on each branch line, and simulates the wellhead pressure of the water discharged into the branch line through the wellhead pressure simulation unit and discharges it. The water discharged from each branch line enters the water tank.

3. The system according to claim 2, characterized in that The pipeline pressure drop simulation unit includes: a first valve combination and a first pressure gauge, wherein the first valve combination includes a first valve and a second valve, and the first valve combination includes the first valve and the second valve for simulating the water flow pressure drop of the branch line, and the first pressure gauge is arranged between the first valve and the second valve.

4. The system according to claim 2, wherein: The wellhead pressure simulation unit includes: a second valve combination and a second pressure gauge, the second pressure gauge is connected to the flow meter, the second valve combination includes a third valve and a fourth valve, the third valve and the fourth valve are used to simulate the water flow pressure at the wellhead.

5. The system according to claim 2, wherein: The input end of the pipeline pressure drop simulation unit is connected to the first flow meter on the trunk line, the output end of the pipeline pressure drop simulation unit is connected to the electric valve, the electric valve is connected to the second flow meter, and the second flow meter is connected to the input of the wellhead pressure simulation unit.

6. A method for detecting an out-of-tolerance flowmeter, characterized in that: The method is applied to the experimental system according to claims 1-5, and the method comprises: Acquire a detection task of an ultra-tolerance flowmeter, wherein the detection task of the ultra-tolerance flowmeter carries a target branch line to be detected; Acquiring current actual operating parameters of the target branch line, wherein the actual operating parameters include branch line pressure, branch line flow, and valve opening of the target branch line; Inputting the actual operating condition parameters into a pre-fitted objective function to obtain a calculation result, wherein the calculation result includes the main line operating condition parameters, and the objective function is obtained by fitting the main line parameters as dependent variables and the branch line parameters as independent variables; The calculation result is matched with the preset data, and when the calculation result does not match the preset data, the out-of-tolerance flowmeter corresponding to the target branch line is determined.

7. The method according to claim 6, characterized in that The method further comprises: Collect historical operating parameters corresponding to the main line and each branch line, wherein the historical operating parameters include: main line parameters and branch line parameters, the main line parameters include main line pressure and main line flow, and the branch line parameters include branch line pressure, branch line flow and valve opening; The main line parameters are used as dependent variables and the branch line parameters are used as independent variables for fitting to obtain the objective function.

8. The method according to claim 6, characterized in that The matching of the calculation result with the preset data, and determining the out-of-tolerance flowmeter corresponding to the target branch line when the calculation result does not match the preset data, includes: Obtaining a data range corresponding to the preset data; matching the calculation result with the data range; If the calculation result exceeds the data range, the target branch line's reverse working condition parameters are reversed using the target function; The reverse working condition parameters are compared with the actual working condition parameters to determine the out-of-tolerance flowmeter corresponding to the target branch line.

9. A detection device for an out-of-tolerance flowmeter, characterized in that: include: A first acquisition module is configured to acquire a detection task of an ultra-tolerance flowmeter, wherein the detection task of the ultra-tolerance flowmeter carries a target branch line to be detected; A second acquisition module is configured to acquire current actual operating parameters of the target branch line, wherein the actual operating parameters include pressure, flow, and valve opening of the target branch line; An input module, configured to input the actual operating condition parameters into a pre-fitted objective function to obtain a calculation result, wherein the calculation result includes the main line operating condition parameters, and the objective function is obtained by fitting the main line parameters as dependent variables and the branch line parameters as independent variables; The processing module is used to match the calculation result with the preset data, and when the calculation result does not match the preset data, determine the out-of-tolerance flowmeter corresponding to the target branch line.

10. An electronic device, characterized in that: The system comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; wherein: Memory for storing computer programs; A processor, configured to execute the method according to any one of claims 6 to 8 by running a program stored in a memory.

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