Oil well production measurement method and device

Abstract

This application provides an oil well production metering method and device, comprising: obtaining a measured electrical parameter curve for a target oil well within a preset number of pumping unit stroke cycles; obtaining an electrical parameter difference curve corresponding to the target oil well based on a preset standard electrical parameter curve and the measured electrical parameter curve; and obtaining the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the electrical parameter difference curve and a preset standard production rate. This application can improve the accuracy and automation of oil well production metering, thereby enhancing production efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of oilfield mechanical oil production, and in particular to an oil well production metering method and device. Background Art

[0002] A well pumping system primarily consists of three components: the pumping unit, the sucker rod, and the pump. Driven by a motor, the pumping unit's suspension point reciprocates, transmitting surface power to the downhole pump through the sucker rod, which in turn drives the plunger pump to pump oil. A fixed valve is located at the top of the pump barrel, while a movable valve is located inside the plunger. During the up-and-down stroke, the movable and fixed valves open and close, lifting crude oil to the surface. Measuring oil well production is a crucial component of oilfield production. Accurate and timely measurement of well production is crucial for understanding well conditions, reservoir dynamics, and formulating production plans.

[0003] Currently, the main methods used in oilfields to measure oil well production include glass tube orifice plate gas measurement, tipping bucket orifice plate gas measurement, two-phase separation density method, and three-phase separation method. These methods require specialized oil measurement equipment, consume a lot of manpower, and cannot achieve daily measurement. The glass tube orifice plate gas measurement method uses intermittent oil measurement to convert production, resulting in a 10% to 20% error in the measurement results. The tipping bucket orifice plate gas measurement method uses oil measurement equipment consisting of an oil gauge and a counter. When one bucket is full, it is tipped over to drain oil, and the other bucket is filled. This cycle accumulates oil. Because the tipping bucket may contain liquid that was not tipped out from the previous measurement, or the last bucket of oil in the current measurement process was not tipped out, the measurement results may have a 20% to 25% error. Summary of the Invention

[0004] In response to the problems in the prior art, the present application proposes an oil well production metering method and device, which can improve the accuracy and automation of oil well production metering, thereby improving the efficiency of mining.

[0005] In order to solve the above technical problems, this application provides the following technical solutions:

[0006] In a first aspect, the present application provides a method for measuring oil well production, comprising:

[0007] Obtaining a measured electrical parameter curve of a target oil well within a preset number of pumping unit stroke cycles;

[0008] Based on a preset standard electrical parameter curve and the measured electrical parameter curve, an electrical parameter difference curve corresponding to the target oil well is obtained;

[0009] According to the electrical parameter difference curve and the preset standard production, the actual production of the target oil well within the preset number of pumping unit stroke cycles is obtained.

[0010] Furthermore, obtaining the electrical parameter difference curve corresponding to the target oil well based on the preset standard electrical parameter curve and the measured electrical parameter curve includes:

[0011] An electrical parameter difference curve is obtained based on the crank angles in the preset standard electrical parameter curve and the measured electrical parameter curve and the electrical parameters at the same crank angle.

[0012] Furthermore, obtaining the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the electrical parameter difference curve and a preset standard production includes:

[0013] Obtaining a pump fullness difference of the target oil well according to a critical crank angle of a difference region in the electrical parameter difference curve;

[0014] Obtaining a production change of the target oil well within a preset number of pumping unit stroke cycles according to the preset standard production and the difference between the pump filling levels;

[0015] According to the preset standard production and production change, the actual production of the target oil well within the preset number of pumping unit stroke cycles is obtained.

[0016] Furthermore, before obtaining the electrical parameter difference curve corresponding to the target oil well based on the preset standard electrical parameter curve and the measured electrical parameter curve, the method further includes:

[0017] Obtaining historical production data of the target oil well;

[0018] Based on the historical production data, the standard electrical parameter curve and standard output are obtained.

[0019] In a second aspect, the present application provides an oil well production metering device, comprising:

[0020] An acquisition module, used to obtain a measured electrical parameter curve of a target oil well within a preset number of pumping unit stroke cycles;

[0021] A difference curve acquisition module is used to obtain an electrical parameter difference curve corresponding to the target oil well based on a preset standard electrical parameter curve and the measured electrical parameter curve;

[0022] The actual production acquisition module is used to obtain the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the electrical parameter difference curve and the preset standard production.

[0023] Furthermore, the module for obtaining the difference curve includes:

[0024] The difference curve obtaining unit is used to obtain an electrical parameter difference curve according to the crank angle in the preset standard electrical parameter curve and the measured electrical parameter curve and the electrical parameters at the same crank angle.

[0025] Furthermore, the module for obtaining actual output includes:

[0026] a difference determination unit, configured to obtain a pump fullness difference of the target oil well according to a critical crank angle of a difference region in the electrical parameter difference curve;

[0027] a production change obtaining unit, configured to obtain a production change of the target oil well within a preset number of pumping unit stroke cycles according to the preset standard production and a difference between the pump filling levels;

[0028] The production determination unit is used to obtain the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the preset standard production and production change.

[0029] Furthermore, the oil well production metering device further includes:

[0030] A historical data acquisition module is used to acquire historical production data of the target oil well;

[0031] The standardization module is used to obtain the standard electrical parameter curve and standard output based on the historical production data.

[0032] In a third aspect, the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the oil well production metering method when executing the program.

[0033] In a fourth aspect, the present application provides a computer-readable storage medium having computer instructions stored thereon, which implement the oil well production metering method when the instructions are executed.

[0034] As can be seen from the above technical solution, the present application provides an oil well production measurement method and device. The method includes: obtaining a measured electrical parameter curve for a target oil well within a preset number of pumping unit stroke cycles; obtaining an electrical parameter difference curve corresponding to the target oil well based on a preset standard electrical parameter curve and the measured electrical parameter curve; and obtaining the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the electrical parameter difference curve and the preset standard production rate. This method can improve the accuracy and automation of oil well production measurement, thereby improving production efficiency. By comprehensively considering the relationship between the electrical parameter curve and the oil well production rate, the difference curve can offset the influence of pumping unit structural parameters and balance block factors during oil well production measurement, focusing effective information on changes in pumping unit liquid production. This method eliminates the need for additional oil measuring devices, such as bucket oil measuring devices and glass tube oil measuring devices, and utilizes readily available data to improve production measurement accuracy by 1 to 2 orders of magnitude. The method is powerful, highly accurate, and highly automated, and can achieve continuous production measurement, saving manpower and investment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 1 is a flow chart of the oil well production measurement method in an embodiment of the present application;

[0037] Figure 2 is a flow chart of an oil well production measurement method in another embodiment of the present application;

[0038] Figure 3 1 is a flow chart of an oil well production measurement method in another embodiment of the present application;

[0039] Figure 4 It is a flow chart of the oil well production measurement method in the specific application example of this application;

[0040] Figure 5 It is a comparative diagram of the standard electrical parameter curve and the measured electrical parameter curve in the specific application example of this application;

[0041] Figure 6 It is a line drawing of the difference curve in the specific application example of this application;

[0042] Figure 7 This is a schematic structural diagram of an oil well production metering device in an embodiment of the present application;

[0043] Figure 8 This is a schematic block diagram of the system structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] To address the aforementioned issues in the prior art, this application considers changing the existing method of measuring oil well production, applying a simple and highly recognized electrical parameter production curve in oil fields. By setting a template for the oil well electrical parameter curve, the actual production electrical parameter curve and the template curve are used to calculate the change in oil well production. The change in production is then superimposed on the template production curve, ultimately calculating the actual oil well production corresponding to the current electrical parameter curve. This application is primarily aimed at measuring the actual displacement of oil and gas well pumps, but is not limited to oil and gas wells.

[0046] Based on this, in order to improve the accuracy and automation of oil well production measurement and thus enhance production efficiency, an embodiment of the present application provides an oil well production metering device, which can be a server or client device. The client device can include a smartphone, a tablet electronic device, a network set-top box, a portable computer, a desktop computer, a personal digital assistant (PDA), a vehicle-mounted device, and a smart wearable device. The smart wearable device can include smart glasses, smart watches, and smart bracelets.

[0047] In practical applications, the oil well production metering process can be performed on the server side as described above, or all operations can be performed on the client device. The specific selection can be based on the processing capabilities of the client device and the limitations of the user's usage scenario. This application does not impose any restrictions on this. If all operations are performed on the client device, the client device may also include a processor.

[0048] The client device may include a communication module (i.e., a communication unit) that can establish a communication connection with a remote server to implement data transmission with the server. The server may include a server on the task scheduling center side, and in other implementation scenarios, may also include a server on an intermediate platform, such as a server on a third-party server platform that has a communication link with the task scheduling center server. The server may include a single computer device, a server cluster consisting of multiple servers, or a server structure of a distributed device.

[0049] The server and the client device may communicate using any suitable network protocol, including network protocols not yet developed on the date of filing this application. Examples of such network protocols include TCP / IP, UDP / IP, HTTP, and HTTPS. Furthermore, examples of such network protocols include RPC (Remote Procedure Call Protocol) and REST (Representational State Transfer) protocols, which are used on top of the aforementioned protocols.

[0050] It should be noted that the oil well production metering method and device provided in this application can be used in the field of oil field mechanical oil production technology, and can also be used in all engineering application fields involving oil-water pumps pumping fluids. The application field of the oil well production metering method and device disclosed in this application is not limited.

[0051] The details are described in the following embodiments.

[0052] In order to improve the accuracy and automation of oil well production measurement and thus improve the efficiency of mining, this embodiment provides an oil well production measurement method in which the execution subject is an oil well production measurement device, and the oil well production measurement device includes but is not limited to a server, such as Figure 1 As shown, the method specifically includes the following contents:

[0053] Step 100: Obtaining the measured electrical parameter curve of the target oil well within a preset number of pumping unit stroke cycles.

[0054] Specifically, the number of stroke cycles can be set according to actual conditions, and this application does not impose any restrictions on this. The production data of the target oil well within at least one stroke cycle can be obtained; the measured electrical parameter curve can be obtained by measurement.

[0055] Step 200: Based on a preset standard electrical parameter curve and the measured electrical parameter curve, an electrical parameter difference curve corresponding to the target oil well is obtained.

[0056] Specifically, the number of pumping unit stroke cycles corresponding to the preset standard electrical parameter curve and the measured electrical parameter curve may be the same.

[0057] Step 300: According to the electrical parameter difference curve and a preset standard production, the actual production of the target oil well within the preset number of pumping unit stroke cycles is obtained.

[0058] Specifically, the daily production of the target oil well can be obtained based on the actual production within the preset number of pumping unit stroke cycles.

[0059] In order to further improve the reliability of obtaining the difference curve, in one embodiment of the present application, see Figure 2 , step 200 includes:

[0060] Step 201: Obtain an electrical parameter difference curve based on the crank angles in the preset standard electrical parameter curve and the measured electrical parameter curve and the electrical parameters at the same crank angle.

[0061] In order to further improve the reliability of obtaining the output change, in one embodiment of the present application, see Figure 3 , step 300 includes:

[0062] Step 301: Obtain the pump fullness difference of the target oil well according to the critical crank angle of the difference region in the electrical parameter difference curve.

[0063] Specifically, the difference region may be a crank angle range in the electrical parameter difference curve where the standard electrical parameter curve and the measured electrical parameter curve have the same crank angle but different electrical parameters. The critical crank angle may represent the crank angles at both ends of the difference region. The pump fullness difference Δη may be obtained by the following formula:

[0064] Δα=α2-α1

[0065] η=(π-Δα) / π

[0066] Δη=1-η

[0067] Wherein, a1 and a2 both represent the critical crank angles of the difference region in the difference curve, η represents the actual pump filling degree, and the standard pump filling degree is preset to 1.

[0068] Step 302: Obtaining the production change of the target oil well within the preset number of pumping unit stroke cycles based on the preset standard production and the difference between the pump filling levels.

[0069] Specifically, the output change △Q can be obtained by the following formula:

[0070] △Q=Q0×△η

[0071] Among them, Q0 represents the preset standard output.

[0072] Step 303: According to the preset standard production and production change, the actual production of the target oil well within the preset number of pumping unit stroke cycles is obtained.

[0073] Specifically, the actual output Q1 can be obtained by the following formula:

[0074] Q1=Q0-△Q

[0075] In order to further improve the reliability of calibrating the standard electrical parameter curve and the standard yield, in one embodiment of the present application, before step 200, the following steps are further included:

[0076] Step 021: Obtain historical production data of the target oil well.

[0077] Step 022: Based on the historical production data, obtain the standard electrical parameter curve and standard output.

[0078] Specifically, the historical production data may include the historical power of the target oil well's pumping unit, the corresponding crank angle, and production, etc.; after the target oil well has been in stable production for a period of time, the electrical parameter curve and liquid production of the well may be obtained and tested synchronously, and this pair of electrical parameter curves and corresponding production volume may be used as the standard electrical parameter curve and standard production volume of the well. In this application, the electrical parameter curve may refer to the motor power curve. The number of pumping unit stroke cycles corresponding to each piece of historical production data may be the same as the number of pumping unit stroke cycles corresponding to the production data, and therefore, the obtained standard production volume and the number of pumping unit stroke cycles corresponding to the production change volume are the same.

[0079] In order to further illustrate this solution, this application provides a specific application example of a method for measuring oil well production affected by gas, see Figure 4 In this specific application example, the method includes:

[0080] S1: Calibrate the standard electrical parameter curve P0 and standard production Q0 of the oil well based on the historical production data of the oil well.

[0081] Specifically, it includes: template calibration, calibrating the standard power curve and corresponding production based on the historical production data of the normal operation of the pumping well, and serving as the standard template for subsequent production measurement. The standard template contains at least one period of continuous measured power values ​​and measured production values.

[0082] S2: Measure the electrical parameter curve P1 of at least one stroke cycle of the oil well.

[0083] S3: Taking the difference between the measured electrical parameter curve P1 and the standard electrical parameter curve P0 to obtain a difference curve △P, which is the above-mentioned electrical parameter difference curve.

[0084] Specifically include: production calculation, gas will affect the change of oil well power and production. Figure 5 As shown in the figure, the standard power curve and the measured power curve of at least one cycle are aligned by the crank angle. Curve ① is the standard electrical parameter curve P0 of the oil well, that is, the motor power curve. Curve ② is the part where the measured power curve and the standard power curve do not overlap. The other parts of the two curves are roughly coincident. By taking the difference between the two curves, the difference curve △P of the power curve can be obtained, as shown in the figure. Figure 6 shown.

[0085] ΔP=P1-P0

[0086] S4: Use the difference curve △P to calculate the change in output △Q.

[0087] Among them, for oil wells affected by gas, the change in the power curve is mainly caused by the load unloading of the stroke under the influence of gas. The power difference in this part can be corresponded to Figure 5 The missing part A below the "handle" in the middle. The filling degree is calculated by applying the following formula based on the critical crank angles α1 and α2 of the difference area on the difference curve △P.

[0088] Δα=α2-α1

[0089] η=(π-Δα) / π

[0090] The fullness of the standard output for the standard electrical parameter curve in step S1 is regarded as 1, 1-η is the difference Δη between the fullness of the template data and the measured data, that is, the difference in the fullness of the pump mentioned above, and the output difference △Q=Q0×△η.

[0091] S5: Subtract the production change from the standard production to obtain the actual production of the well.

[0092] The actual production Q1 = Q0 - ΔQ. The production can also be obtained from the power curves of other oil well operating conditions using the above process.

[0093] From the software level, in order to improve the accuracy and automation of oil well production measurement, and thus improve the efficiency of mining, the present application provides an embodiment of an oil well production measurement device for realizing all or part of the contents of the oil well production measurement method, see Figure 7 The oil well production metering device specifically includes the following contents:

[0094] The acquisition module 10 is used to obtain the measured electrical parameter curve of the target oil well within a preset number of pumping unit stroke cycles.

[0095] The difference curve acquisition module 20 is used to obtain the electrical parameter difference curve corresponding to the target oil well based on a preset standard electrical parameter curve and the measured electrical parameter curve.

[0096] The actual production acquisition module 30 is used to obtain the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the electrical parameter difference curve and the preset standard production.

[0097] In one embodiment of the present application, the module for obtaining the difference curve includes:

[0098] The difference curve obtaining unit is used to obtain an electrical parameter difference curve according to the crank angle in the preset standard electrical parameter curve and the measured electrical parameter curve and the electrical parameters at the same crank angle.

[0099] In one embodiment of the present application, the module for obtaining actual output includes:

[0100] The difference determination unit is configured to obtain a pump fullness difference of the target oil well according to a critical crank angle of a difference region in the electrical parameter difference curve.

[0101] The production change obtaining unit is used to obtain the production change of the target oil well within the preset number of pumping unit stroke cycles according to the preset standard production and the difference between the pump filling degree.

[0102] The production determination unit is used to obtain the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the preset standard production and production change.

[0103] In one embodiment of the present application, the oil well production metering device further includes:

[0104] The historical data acquisition module is used to acquire the historical production data of the target oil well.

[0105] The standardization module is used to obtain the standard electrical parameter curve and standard output based on the historical production data.

[0106] The embodiment of the oil well production metering device provided in this specification can be specifically used to execute the processing flow of the embodiment of the above-mentioned oil well production metering method. Its functions are not described in detail here, and reference can be made to the detailed description of the embodiment of the above-mentioned oil well production metering method.

[0107] From the above description, it can be seen that the oil well production metering method and device provided in the present application can improve the accuracy and automation of oil well production metering, thereby improving the efficiency of mining; comprehensively considering the relationship between the electrical parameter curve of the oil well and the oil well production, the difference curve can offset the influence of the pumping unit structural parameters and balance block factors in the oil well production metering process, and concentrate effective information on the changes in the pumping unit liquid production. There is no need to add additional oil measuring devices. By using simple and easily available data, the production metering accuracy can be improved by 1 to 2 orders of magnitude. It has powerful functions, high precision, high automation and can achieve continuous measurement of production, saving manpower and investment costs.

[0108] From a hardware perspective, in order to improve the accuracy and automation of oil well production measurement and thereby enhance production efficiency, the present application provides an embodiment of an electronic device for implementing all or part of the oil well production measurement method. The electronic device specifically includes the following:

[0109] A processor, a memory, a communications interface, and a bus; wherein the processor, memory, and communications interface communicate with each other via the bus; the communications interface is used to transmit information between the oil well production metering device and related devices such as a user terminal; the electronic device may be a desktop computer, a tablet computer, a mobile terminal, etc., but this embodiment is not limited thereto. In this embodiment, the electronic device can be implemented with reference to the embodiments for implementing the oil well production metering method and the embodiments for implementing the oil well production metering device, the contents of which are incorporated herein and any repetitions are omitted.

[0110] Figure 8 Schematic block diagram of the system structure of the electronic device 9600 according to an embodiment of the present application. Figure 8 As shown, the electronic device 9600 may include a central processing unit 9100 and a memory 9140; the memory 9140 is coupled to the central processing unit 9100. It is worth noting that the Figure 8 is exemplary; other types of structures may also be used to supplement or replace this structure to implement telecommunication functions or other functions.

[0111] In one or more embodiments of the present application, the oil well production metering function may be integrated into the central processing unit 9100. The central processing unit 9100 may be configured to perform the following control:

[0112] Step 100: Obtaining the measured electrical parameter curve of the target oil well within a preset number of pumping unit stroke cycles.

[0113] Step 200: Based on a preset standard electrical parameter curve and the measured electrical parameter curve, an electrical parameter difference curve corresponding to the target oil well is obtained.

[0114] Step 300: Obtaining the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the electrical parameter difference curve.

[0115] It can be seen from the above description that the electronic device provided in the embodiments of the present application can improve the accuracy and automation of oil well production measurement, thereby improving the efficiency of mining.

[0116] In another embodiment, the oil well production metering device can be configured separately from the central processor 9100. For example, the oil well production metering device can be configured as a chip connected to the central processor 9100, and the oil well production metering function can be realized through the control of the central processor.

[0117] like Figure 8 As shown, the electronic device 9600 may further include: a communication module 9110, an input unit 9120, an audio processor 9130, a display 9160, and a power supply 9170. It is worth noting that the electronic device 9600 does not necessarily have to include Figure 8 In addition, the electronic device 9600 may also include all components shown in Figure 8 For components not shown, reference may be made to the prior art.

[0118] like Figure 8 As shown, the central processing unit 9100 is sometimes also referred to as a controller or operation control, and may include a microprocessor or other processor device and / or logic device. The central processing unit 9100 receives input and controls the operation of various components of the electronic device 9600.

[0119] Memory 9140 can be, for example, one or more of a cache, flash memory, hard drive, removable media, volatile memory, non-volatile memory, or other suitable devices. It can store the aforementioned failure-related information and also store programs that execute the relevant information. The CPU 9100 can execute the programs stored in memory 9140 to implement information storage or processing.

[0120] The input unit 9120 provides input to the central processing unit 9100. The input unit 9120 may be, for example, a keypad or touch input device. The power supply 9170 is used to provide power to the electronic device 9600. The display 9160 is used to display objects such as images and text. The display may be, for example, an LCD display, but is not limited thereto.

[0121] The memory 9140 may be a solid-state memory, such as a read-only memory (ROM), a random access memory (RAM), or a SIM card. Alternatively, it may be a memory that retains information even when power is off, can be selectively erased, and is provided with more data. Examples of such memory are sometimes referred to as EPROMs. The memory 9140 may also be some other type of device. The memory 9140 includes a buffer memory 9141 (sometimes referred to as a buffer). The memory 9140 may include an application / function storage unit 9142 for storing application programs and function programs or processes for executing the operation of the electronic device 9600 by the central processing unit 9100.

[0122] The memory 9140 may also include a data storage unit 9143 for storing data, such as contacts, digital data, pictures, sounds, and / or any other data used by the electronic device. The driver storage unit 9144 of the memory 9140 may include various driver programs for communication functions of the electronic device and / or for executing other functions of the electronic device (such as messaging applications, address book applications, etc.).

[0123] The communication module 9110 is a transmitter / receiver 9110 that transmits and receives signals via an antenna 9111. The communication module (transmitter / receiver) 9110 is coupled to the central processor 9100 to provide input signals and receive output signals, which may be the same as in a conventional mobile communication terminal.

[0124] Based on different communication technologies, multiple communication modules 9110 can be provided in the same electronic device, such as a cellular network module, a Bluetooth module, and / or a wireless local area network module. The communication module (transmitter / receiver) 9110 is also coupled to a speaker 9131 and a microphone 9132 via an audio processor 9130 to provide audio output via the speaker 9131 and receive audio input from the microphone 9132, thereby implementing common telecommunication functions. The audio processor 9130 may include any suitable buffer, decoder, amplifier, etc. Furthermore, the audio processor 9130 is also coupled to the central processing unit 9100, enabling local recording via the microphone 9132 and playback of stored audio via the speaker 9131.

[0125] As can be seen from the above description, the electronic device provided in the embodiments of the present application can improve the accuracy and automation of oil well production measurement, thereby improving the efficiency of mining.

[0126] The embodiments of the present application also provide a computer-readable storage medium capable of implementing all steps of the oil well production measurement method in the above embodiments. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, all steps of the oil well production measurement method in the above embodiments are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0127] Step 100: Obtaining the measured electrical parameter curve of the target oil well within a preset number of pumping unit stroke cycles.

[0128] Step 200: Based on a preset standard electrical parameter curve and the measured electrical parameter curve, an electrical parameter difference curve corresponding to the target oil well is obtained.

[0129] Step 300: Obtaining the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the electrical parameter difference curve.

[0130] It can be seen from the above description that the computer-readable storage medium provided in the embodiments of the present application can improve the accuracy and automation of oil well production measurement, thereby improving the efficiency of mining.

[0131] In this application, the various embodiments of the above method are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. For related parts, please refer to the partial description of the method embodiment.

[0132] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0133] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1A device that provides the functions specified in a block or multiple blocks.

[0134] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0135] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0136] Specific embodiments are used in this application to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A method for measuring oil well production, characterized in that: include: Obtaining a measured electrical parameter curve of a target oil well within a preset number of pumping unit stroke cycles; Based on a preset standard electrical parameter curve and the measured electrical parameter curve, an electrical parameter difference curve corresponding to the target oil well is obtained; According to the electrical parameter difference curve and a preset standard production, the actual production of the target oil well within the preset number of pumping unit stroke cycles is obtained; The step of obtaining the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the electrical parameter difference curve and the preset standard production includes: Obtaining a pump fullness difference of the target oil well according to a critical crank angle of a difference region in the electrical parameter difference curve; Obtaining a production change of the target oil well within a preset number of pumping unit stroke cycles based on the preset standard production and the difference between the pump filling levels; According to the preset standard production and production change, the actual production of the target oil well within the preset number of pumping unit stroke cycles is obtained; The step of obtaining the pump fullness difference of the target oil well according to the critical crank angle of the difference region in the electrical parameter difference curve includes: The pump filling degree difference △η is obtained by the following formula: Δα=α2-α1 η=(π-Δα) / π △η=1-η Where a1 and a2 represent the critical crank angles of the difference region in the difference curve, and η represents the actual pump filling degree; The method of obtaining the production change of the target oil well within the preset number of pumping unit stroke cycles based on the preset standard production and the difference between the pump filling levels includes: The output change △Q is obtained by the following formula: △Q=Q0×△η Among them, Q0 represents the preset standard output; The step of obtaining the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the preset standard production and production change includes: The actual output Q1 is obtained by the following formula: Q1=Q0-△Q The step of obtaining an electrical parameter difference curve corresponding to the target oil well based on a preset standard electrical parameter curve and the measured electrical parameter curve includes: An electrical parameter difference curve is obtained based on the crank angles in the preset standard electrical parameter curve and the measured electrical parameter curve and the electrical parameters at the same crank angle.

2. The oil well production measurement method according to claim 1, characterized in that: Before obtaining the electrical parameter difference curve corresponding to the target oil well based on the preset standard electrical parameter curve and the measured electrical parameter curve, the method further includes: Obtaining historical production data of the target oil well; Based on the historical production data, the standard electrical parameter curve and standard output are obtained.

3. An oil well production metering device, characterized in that: include: An acquisition module, used to obtain a measured electrical parameter curve of a target oil well within a preset number of pumping unit stroke cycles; A difference curve acquisition module is used to obtain an electrical parameter difference curve corresponding to the target oil well based on a preset standard electrical parameter curve and the measured electrical parameter curve; An actual production acquisition module is used to obtain the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the electrical parameter difference curve and a preset standard production; The actual output acquisition module includes: a difference determination unit, configured to obtain a pump fullness difference of the target oil well according to a critical crank angle of a difference region in the electrical parameter difference curve; a production change obtaining unit, configured to obtain a production change of the target oil well within a preset number of pumping unit stroke cycles according to the preset standard production and a difference between the pump filling levels; a production determination unit, configured to obtain the actual production of the target oil well within the preset number of pumping unit stroke cycles according to the preset standard production and production change; The step of obtaining the pump fullness difference of the target oil well according to the critical crank angle of the difference region in the electrical parameter difference curve includes: The pump filling degree difference △η is obtained by the following formula: Δα=α2-α1 η=(π-Δα) / π △η=1-η Where a1 and a2 represent the critical crank angles of the difference region in the difference curve, and η represents the actual pump filling degree; The method of obtaining the production change of the target oil well within the preset number of pumping unit stroke cycles based on the preset standard production and the difference between the pump filling levels includes: The output change △Q is obtained by the following formula: △Q=Q0×△η Among them, Q0 represents the preset standard output; The step of obtaining the actual production of the target oil well within the preset number of pumping unit stroke cycles based on the preset standard production and production change includes: The actual output Q1 is obtained by the following formula: Q1=Q0-△Q; The module for obtaining a difference curve includes: The difference curve obtaining unit is used to obtain an electrical parameter difference curve according to the crank angle in the preset standard electrical parameter curve and the measured electrical parameter curve and the electrical parameters at the same crank angle.

4. The oil well production metering device according to claim 3, characterized in that: Also includes: A historical data acquisition module is used to acquire historical production data of the target oil well; The standardization module is used to obtain the standard electrical parameter curve and standard output based on the historical production data.

5. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the oil well production measurement method according to claim 1 or 2 is implemented.

6. A computer-readable storage medium having computer instructions stored thereon, characterized in that: When the instructions are executed, the oil well production measurement method according to claim 1 or 2 is implemented.

Images