Electric submersible pump characteristic curve correction method and related system

Abstract

The invention provides a method for correcting a characteristic curve of an electric submersible pump and a related system, and belongs to the technical field of oil extraction processes. Specifically, a delivery characteristic curve of the electric submersible pump is obtained; carrying out viscosity correction on the delivery characteristic curve of the electric submersible pump; performing gas correction on the characteristic curve after viscosity correction; whether the electric submersible pump subjected to gas correction works in a well or not is judged; if the device works in the well, curve correction is carried out; and if the electric submersible pump does not work in the well, the electric submersible pump characteristic curve under different operation frequencies is calculated, and the corrected electric submersible pump characteristic curve is obtained. According to the method, firstly, the electric submersible pump leaving a factory is corrected through viscosity correction and gas correction, then the electric submersible pump working in a well is corrected through a curve correction method including lift curve correction and power curve correction, and through correction of the lift curve and the power curve, an efficiency curve is also corrected; therefore, the working state of the oil well is optimized.

Description

Technical Field

[0001] This invention belongs to the field of oil production technology, specifically relating to a method and system for correcting the characteristic curve of a submersible electric pump. Background Technology

[0002] A submersible electric pump (SAP) has three characteristic curves: head, power, and efficiency. The data provided by the manufacturer is for clean water conditions. However, in actual operating conditions, the fluids are mostly not clean water, but complex fluids such as oil, oil-water emulsions, or oil-gas-water mixtures. The operating curves of a SSP may differ slightly under different fluid viscosities, gas-liquid ratios, and other conditions. Furthermore, after a period of operation, the characteristic curves may shift due to component wear and other factors. Therefore, the actual characteristic curves of the pump may deviate significantly from the factory-measured curves, requiring calibration before use.

[0003] In the selection, design, and optimization analysis of submersible electric pump (ESP) units, inaccurate ESP characteristic curves will cause errors in unit selection, frequency calculation, and output calculation. Therefore, it is necessary to correct the ESP characteristic curves before using them.

[0004] Currently, there are two main approaches to correcting the characteristic curves of submersible electric pumps: correction based on measured operating points and correction using computational models.

[0005] When measured pump inlet and outlet pressure data are available, the characteristic curve can be shifted and scaled according to the corresponding displacement and head at the measured points. Calibration methods include four approaches: flow rate proportionality factor, flow rate offset, head proportionality factor, and head offset. By shifting or scaling the head curve to pass through the calibration point, the final corrected performance curve is obtained; based on the corrected submersible pump performance curve, the corresponding flow rate can be calculated. The method based on measured operating points is generally only applicable when the pump inlet and outlet pressures can be directly measured, and this method only supports head curve correction; power and efficiency curves are difficult to correct. The method using computational models can predict and correct the performance characteristics of submersible pumps under different operating conditions, but the accuracy of the correction results depends on the precision and reliability of the mathematical model.

[0006] Therefore, the present invention provides a method for calculating the characteristic curve of a submersible electric pump. When the pump inlet and outlet pressures are difficult to measure, the characteristic curve of the electric pump can be corrected based on the properties of the fluid inside the pump. Summary of the Invention

[0007] The purpose of this invention is to overcome the limitations of existing submersible electric pump (FET) curve correction methods, which are only applicable to the correction of specific curves and lack a systematic method for correcting FET characteristic curves. This invention provides a method and related system for correcting FET characteristic curves. It can calculate the actual characteristic curve of the FET under given fluid properties, FET unit operating parameters, and measured operating conditions.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a method for correcting the characteristic curve of a submersible electric pump, comprising the following steps: Obtain the factory characteristic curve of the submersible electric pump; Viscosity correction was performed on the factory characteristic curve of the submersible electric pump. Perform gas correction on the viscosity-corrected characteristic curve; Determine whether the submersible pump, after gas calibration, is operating in the well; If the submersible electric pump is operating in the well, then perform curve correction on the submersible electric pump; If the submersible electric pump is not working in the well, calculate the submersible electric pump characteristic curves at different operating frequencies to obtain the corrected submersible electric pump characteristic curves. Curve correction includes head curve correction and power curve correction.

[0009] If the submersible pump is operating in the well, the curve correction method is as follows: Set the gas-corrected submersible electric pump to a given frequency, calculate and plot its characteristic curve; Obtain the inlet and outlet pressure data and internal flow data of the submersible electric pump at a given frequency, and calculate and plot the head curve and power curve of the submersible electric pump. The head and power curves were corrected, and the pump efficiency was recalculated.

[0010] The method for correcting the head curve and power curve and recalculating the pump efficiency is as follows: The head curve is corrected using the head proportional factor method, and the power characteristic curve is corrected using the power proportional factor method. The actual power consumption of the electric pump is calculated based on the electrical parameters, and the pump efficiency is calculated using the corrected head curve and the actual power consumption. The corrected head curve is expressed as follows: ; The corrected power curve is represented as follows: ; The actual power consumption of the electric pump is: ; Recalculate the points on the corrected power characteristic curve: ; Pump efficiency: ; in, This represents the corrected head curve. Indicates the head ratio factor. This represents the original head curve; This represents the corrected power curve. Indicates the power scaling factor. This represents the original power curve; This indicates the actual power consumption of the electric pump. These represent the voltage, current, and power factor of the submersible electric pump, respectively. Points on the corrected power characteristic curve Indicates in traffic The actual power consumption of the electric pump; This represents the ratio of output power to input power. It is the density of the liquid in the well. It is gravitational acceleration. This represents the flow rate of the liquid in the well.

[0011] The formula for calculating the head proportionality factor is: , The formula for calculating the power ratio factor is: .

[0012] If the submersible electric pump is not operating in the well, the characteristic curves at different operating frequencies can be calculated directly using the similarity law of submersible electric pumps, and the corrected characteristic curves of the submersible electric pump can be obtained.

[0013] The method for viscosity correction of the factory characteristic curve of the submersible electric pump is as follows: Based on the fluid properties of the oil well, the average fluid viscosity inside the pump is calculated, and the viscosity is corrected for the factory characteristic curve of the submersible electric pump using the calculation model given in ANSI-HI 9.6.7.

[0014] The method for gas calibration of the factory characteristic curve of the submersible electric pump is as follows: Based on the fluid flow parameters in the oil well and the design parameters of the submersible electric pump, the average gas volume fraction in the pump is calculated, and the gas correction of the submersible electric pump characteristic curve is performed using the Turpin model.

[0015] Secondly, the present invention provides a system for correcting the characteristic curve of a submersible electric pump, comprising: The acquisition module is used to acquire the factory characteristic curves of the submersible electric pump; The viscosity correction module is used to correct the viscosity of the factory characteristic curve of the submersible electric pump. The gas correction module is used to correct the gas content of the viscosity-corrected characteristic curve. The working status judgment module is used to determine whether the submersible electric pump is working in the well after the gas calibration is completed; The curve correction module is used to correct the curve of a submersible electric pump that is working in the well. The frequency characteristic calculation module is used to calculate the characteristic curves of the submersible electric pump at different operating frequencies and obtain the corrected characteristic curves of the submersible electric pump.

[0016] Thirdly, the present invention provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of a method for correcting the characteristic curve of a submersible electric pump.

[0017] Fourthly, the present invention provides a storage medium storing a computer program thereon, wherein the computer program, when executed by a processor, implements the steps of a method for correcting the characteristic curve of a submersible electric pump.

[0018] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a method and system for correcting the characteristic curve of a submersible electric pump (Submarine Pump). Specifically, the method involves: obtaining the factory characteristic curve of the Submarine Pump; performing viscosity correction on the factory characteristic curve; performing gas correction on the viscosity-corrected characteristic curve; determining whether the Submarine Pump with gas correction completed is currently operating in the well; if the Submarine Pump is operating in the well, performing curve correction; if the Submarine Pump is not operating in the well, calculating the Submarine Pump characteristic curves at different operating frequencies to obtain the corrected Submarine Pump characteristic curve. This invention first corrects the factory-made Submarine Pump through viscosity and gas correction, and then corrects the Submarine Pump currently operating in the well using a curve correction method, including head curve correction and power curve correction. Through the correction of the head and power curves, the efficiency curve is also corrected, thereby optimizing the working state of the oil well.

[0019] Furthermore, for new wells, this invention facilitates more precise selection and design of submersible electric pump units; for submersible electric pumps already operating in oil wells, the corrected characteristic curves can be used to analyze the well's operating status and perform targeted optimization. Attached Figure Description

[0020] Figure 1 This is a flowchart of the present invention; Figure 2 This is a system diagram of the present invention; Figure 3 This is a factory characteristic curve of the submersible electric pump in Embodiment 3 of the present invention; Figure 4 This is a comparison chart of viscosity correction for the submersible electric pump of the present invention; Figure 5 This is a comparison chart of gas calibration for the submersible electric pump of the present invention; Figure 6 This is a comparison graph of the characteristic curves of the present invention at the rated frequency and the operating frequency; Figure 7 This is a comparison chart of the characteristic curves before and after correction at actual operating conditions of the present invention; Figure 8 This is a comparison chart of the characteristic curves of the present invention at different operating frequencies; Figure 9 This is a system diagram of Embodiment 4 of the present invention. Detailed Implementation

[0021] To further understand the content of this invention, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0022] Example 1: like Figure 1 As shown, a method for correcting the characteristic curve of a submersible electric pump includes the following steps: S1: Obtain the factory characteristic curve of the submersible electric pump; S2: Perform viscosity correction on the factory characteristic curve of the submersible electric pump; S3: Perform gas correction on the viscosity-corrected characteristic curve; S4: Determine whether the submersible pump is working in the well after the gas calibration is completed; S5: If the submersible pump is operating in the well, perform curve correction; S6: If the submersible electric pump is not operating in the well, calculate the submersible electric pump characteristic curves at different operating frequencies to obtain the corrected submersible electric pump characteristic curves.

[0023] Specifically, in S2, the average fluid viscosity inside the pump is calculated based on the fluid property parameters of the oil well, and the viscosity is corrected for the factory characteristic curve of the submersible electric pump using the calculation model given in ANSI-HI 9.6.7.

[0024] Specifically, in S3, based on the fluid flow parameters in the oil well and the design parameters of the submersible electric pump, the average gas volume fraction in the pump is calculated, and the Turpin model is used to perform gas correction on the characteristic curve of the submersible electric pump.

[0025] Specifically, in step S4, it is determined whether the submersible pump is working in the well. If it is working in the well, step S5 is performed; otherwise, step S6 is executed.

[0026] Specifically, in S5, if the submersible electric pump is operating in the well, the curve correction method is as follows: 1) Set the submersible electric pump with gas calibration at a given frequency, calculate and plot its characteristic curve; 2) Obtain the inlet and outlet pressure data and pump flow data of the submersible electric pump at a given frequency, and calculate and plot the head curve and power curve of the submersible electric pump; 3) The head curve is corrected using the head proportional factor method, and the power characteristic curve is corrected using the power proportional factor method; the actual power consumption of the electric pump is calculated based on the electrical parameters, and the pump efficiency is calculated using the corrected head curve and the actual power consumption. The corrected head curve is expressed as follows: ; The corrected power curve is represented as follows: ; The actual power consumption of the electric pump is: ; Recalculate the points on the corrected power characteristic curve: ; Pump efficiency: ; in, This represents the corrected head curve. Indicates the head ratio factor. This represents the original head curve; This represents the corrected power curve. Indicates the power scaling factor. This represents the original power curve; This indicates the actual power consumption of the electric pump. These represent the voltage, current, and power factor of the submersible electric pump, respectively. Points on the corrected power characteristic curve Indicates in traffic The actual power consumption of the electric pump; This represents the ratio of output power to input power. It is the density of the liquid in the well. It is gravitational acceleration. This represents the flow rate of the liquid in the well.

[0027] The formula for calculating the head proportionality factor is: , The formula for calculating the power ratio factor is: .

[0028] Specifically, in S6, if the submersible electric pump is not working in the well, the characteristic curves at different operating frequencies are calculated directly using the similarity law of the submersible electric pump to obtain the corrected characteristic curves of the submersible electric pump.

[0029] Example 2: like Figure 2 As shown, a calibration system for the characteristic curve of a submersible electric pump includes: The acquisition module is used to acquire the factory characteristic curves of the submersible electric pump; The viscosity correction module is used to correct the viscosity of the factory characteristic curve of the submersible electric pump. The gas correction module is used to correct the gas content of the viscosity-corrected characteristic curve. The working status judgment module is used to determine whether the submersible electric pump is working in the well after the gas calibration is completed; The curve correction module is used to correct the curve of a submersible electric pump that is working in the well. The frequency characteristic calculation module is used to calculate the characteristic curves of the submersible electric pump at different operating frequencies and obtain the corrected characteristic curves of the submersible electric pump.

[0030] Example 3: S1: As Figure 3 As shown, the pump used is a 100-class Centrilift 400 P60, and the factory characteristic curve is shown at a rated frequency of 60Hz.

[0031] The submersible electric pump operates in the oil well. According to calculations, the average kinematic viscosity of the fluid inside the pump is 3 × 10⁻⁶. -5 m 2 / s, gas volume fraction 30%, density 800 kg / m³ 3 The suction inlet pressure is 2 MPa. The pump operates at a frequency of 55 Hz, and the average flow rate within the pump is 615 m³ / h. 3 / d, head 450m, power consumption 63000W.

[0032] S2: Viscosity correction of the submersible electric pump characteristic curve Based on the ANSI-HI 9.6.7 model, viscosity correction was performed on the characteristic curve of the submersible electric pump. The corrected characteristic curve was compared with the original curve. Figure 4 As shown.

[0033] S3: Perform gas correction on the viscosity-corrected characteristic curve. The average free gas fraction within the pump was calculated, and the Turpin gas correction model was used to correct the submersible pump characteristic curve for gas-containing operating conditions. The corrected characteristic curve was compared with the viscosity correction curve obtained in the previous step. Figure 5 As shown.

[0034] S4: Determine whether the submersible pump that has completed gas calibration is working in the well. If it is, proceed to S5; otherwise, jump to S6.

[0035] S5: For pumps currently in use in the well, the characteristic curve is finally corrected using actual operating data. The correction method is as follows: 1) such as Figure 6As shown: Using the gas-corrected characteristic curve in S3, calculate and plot the submersible electric pump characteristic curve at 55Hz; 2) Obtain the inlet and outlet pressure data and pump flow data of the submersible electric pump at a given frequency, and calculate and plot the head curve and power curve of the submersible electric pump; 3) Use the head proportionality factor method and the power proportionality factor method to perform relevant corrections on the head and power curves; calculate the actual power consumption of the electric pump based on the electrical parameters, and use the corrected head curve and actual power consumption to calculate the pump efficiency; Based on the characteristic curve calculated at 55Hz, 615m 3 The head corresponding to / d (daily emissions) is 493.2m, and the power is 63420W. Therefore, the calculated head proportionality factor and power proportionality factor are as follows:

[0036]

[0037] The obtained characteristic curves for head and power are multiplied by the head proportionality factor and power proportionality factor, respectively, and the pump efficiency is recalculated. Results Figure 7 As shown, the star symbol represents the actual operating point: S6: The characteristic curves at different operating frequencies can be calculated using the similarity law of submersible electric pumps.

[0038] The above steps calculate the characteristic curve at 55Hz. Afterwards, you can calculate the characteristic curves at different operating frequencies as needed, such as the characteristic curves for 50Hz and 60Hz. Figure 8 As shown.

[0039] Example 4: like Figure 9 As shown, the present invention also provides an electronic device 100 for a method of correcting the characteristic curve of a submersible electric pump; the electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104.

[0040] The memory 101 can be used to store the computer program 103. The processor 102 implements the steps of the submersible electric pump characteristic curve correction method described in Embodiment 1 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101. The memory 101 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device 100 (such as audio data), etc. In addition, the memory 101 may include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0041] The at least one processor 102 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 102 may be a microprocessor or any conventional processor. The processor 102 is the control center of the electronic device 100, connecting various parts of the electronic device 100 via various interfaces and lines.

[0042] The memory 101 in the electronic device 100 stores multiple instructions to implement a method for correcting the characteristic curve of a submersible electric pump, and the processor 102 can execute the multiple instructions to achieve the following: Obtain the factory characteristic curve of the submersible electric pump; Viscosity correction was performed on the factory characteristic curve of the submersible electric pump. Gas calibration is performed on the factory characteristic curve of the submersible electric pump; Determine whether the calibrated submersible pump is working in the well; If working is underway in a well, then curve correction should be performed; If not operating in the well, calculate the characteristic curves of the submersible electric pump at different operating frequencies to obtain the corrected characteristic curves of the submersible electric pump.

[0043] Example 5: If the modules / units integrated in the electronic device 100 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0044] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0045] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0046] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0047] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for correcting the characteristic curve of a submersible electric pump, characterized in that, Includes the following steps: Obtain the factory characteristic curve of the submersible electric pump; Viscosity correction was performed on the factory characteristic curve of the submersible electric pump. Perform gas correction on the viscosity-corrected characteristic curve; Determine whether the submersible pump, after gas calibration, is operating in the well; If the submersible electric pump is operating in the well, then perform curve correction on the submersible electric pump; If the submersible electric pump is not working in the well, calculate the submersible electric pump characteristic curves at different operating frequencies to obtain the corrected submersible electric pump characteristic curves. Curve correction for submersible electric pumps includes head curve correction and power curve correction.

2. The method for correcting the characteristic curve of a submersible electric pump according to claim 1, characterized in that, If the submersible pump is operating in the well, the curve correction method is as follows: Set the gas-corrected submersible electric pump to a given frequency, calculate and plot its characteristic curve; Obtain the inlet and outlet pressure data and internal flow data of the submersible electric pump at a given frequency, and calculate and plot the head curve and power curve of the submersible electric pump. The head and power curves were corrected, and the pump efficiency was recalculated.

3. The method for correcting the characteristic curve of a submersible electric pump according to claim 2, characterized in that, The method for correcting the head curve and power curve and recalculating the pump efficiency is as follows: The head curve is corrected using the head proportional factor method, and the power characteristic curve is corrected using the power proportional factor method. The actual power consumption of the electric pump is calculated based on the electrical parameters, and the pump efficiency is calculated using the corrected head curve and the actual power consumption. The corrected head curve is expressed as follows: ; The corrected power curve is represented as follows: ; The actual power consumption of the electric pump is: ; Recalculate the points on the corrected power characteristic curve: ; Pump efficiency: ; in, This represents the corrected head curve. Indicates the head ratio factor. This represents the original head curve; This represents the corrected power curve. Indicates the power scaling factor. This represents the original power curve; This indicates the actual power consumption of the electric pump. These represent the voltage, current, and power factor of the submersible electric pump, respectively. Points on the corrected power characteristic curve Indicates in traffic The actual power consumption of the electric pump; This represents the ratio of output power to input power. It is the density of the liquid in the well. It is gravitational acceleration. This represents the flow rate of the liquid in the well.

4. The method for correcting the characteristic curve of a submersible electric pump according to claim 3, characterized in that, The formula for calculating the head proportionality factor is: , The formula for calculating the power ratio factor is: .

5. The method for correcting the characteristic curve of a submersible electric pump according to claim 1, characterized in that, If the submersible electric pump is not operating in the well, the characteristic curves at different operating frequencies can be calculated directly using the similarity law of submersible electric pumps, and the corrected characteristic curves of the submersible electric pump can be obtained.

6. The method for correcting the characteristic curve of a submersible electric pump according to claim 1, characterized in that, The method for viscosity correction of the factory characteristic curve of the submersible electric pump is as follows: Based on the fluid properties of the oil well, the average fluid viscosity inside the pump is calculated, and the viscosity is corrected for the factory characteristic curve of the submersible electric pump using the calculation model given in ANSI-HI 9.6.

7.

7. The method for correcting the characteristic curve of a submersible electric pump according to claim 1, characterized in that, The method for gas correction of the viscosity-corrected characteristic curve is as follows: Based on the fluid flow parameters in the oil well and the design parameters of the submersible electric pump, the average gas volume fraction in the pump is calculated, and the gas correction of the submersible electric pump characteristic curve is performed using the Turpin model.

8. A calibration system for the characteristic curve of a submersible electric pump, characterized in that, include: The acquisition module is used to acquire the factory characteristic curves of the submersible electric pump; The viscosity correction module is used to correct the viscosity of the factory characteristic curve of the submersible electric pump. The gas correction module is used to correct the gas content of the viscosity-corrected characteristic curve. The working status judgment module is used to determine whether the submersible electric pump is working in the well after the gas calibration is completed; The curve correction module is used to correct the curve of a submersible electric pump that is working in the well. The frequency characteristic calculation module is used to calculate the characteristic curves of the submersible electric pump at different operating frequencies and obtain the corrected characteristic curves of the submersible electric pump.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method for correcting the characteristic curve of a submersible electric pump according to any one of claims 1 to 7.

10. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method for correcting the characteristic curve of a submersible electric pump according to any one of claims 1 to 7.

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