A troubleshooting method, system, equipment, medium and product for profile control construction

Abstract

The present application provides a troubleshooting method, system, equipment, medium and product for profile control construction, which relates to the field of profile control technology, including: first obtaining the plunger pump outlet pressure, plunger pump outlet flow, inverter state, inverter frequency and stirring tank liquid level, and then comparing the plunger pump outlet pressure and the plunger pump outlet flow with preset thresholds to obtain comparison results, and then, according to the comparison results, troubleshooting the causes of the fault in turn. If the comparison results show that the plunger pump outlet pressure and the plunger pump outlet flow are both close to zero, the working conditions of the inverter and the stirring tank liquid level are judged in turn. If the inverter or the stirring tank fails, the cause of the fault is prompted. After excluding the failure of the inverter and the stirring tank, it is determined that the cause of the fault is a failure of the plunger pump, and a prompt of the cause of the fault is given. This method can improve the troubleshooting efficiency during the profile control construction process.

Description

Technical Field

[0001] The present application relates to the field of profile adjustment technology, and in particular to a troubleshooting method, system, equipment, medium and product for profile adjustment construction. Background Art

[0002] In order to increase oil production during oil reservoir exploitation, water injection development is required, that is, water is injected into the oil reservoir through a special injection well, and the oil is driven out by water, thereby increasing the oil recovery rate. However, due to the different permeabilities of formation water caused by continental sedimentation, the high permeability layer has a strong water absorption capacity, and the low permeability layer has a poor water absorption capacity. During the water injection development process, the difference in water absorption capacity of different formations causes water to flow into the high permeability layer, and the oil reservoir in the low permeability layer cannot be driven out, which leads to low oil recovery. Therefore, it is necessary to use profile adjustment technology to adjust the water absorption capacity of the water absorption profile.

[0003] During the profile control construction process, a plunger pump is used to extract chemicals and inject them into the parts or sections with strong water absorption capacity of the high permeability layer of the formation, thereby reducing the permeability of the high permeability layer and changing the direction of water flow so that water flows into the low permeability layer to increase the water absorption capacity of the low permeability oil layer, alleviate the contradiction between layers, and improve the water drive effect. Under normal circumstances, the pressure and flow rate at the outlet of the plunger pump should be maintained within a certain range to achieve a good profile control effect. However, during the profile control construction process, the plunger pump outlet pressure and flow rate are often abnormal, resulting in low oil field development efficiency. Existing technologies usually require manual analysis to troubleshoot the causes of abnormal pump outlet pressure and flow rate.

[0004] However, this manual analysis and troubleshooting method is limited by personnel experience, which seriously affects the efficiency of troubleshooting. Summary of the invention

[0005] The purpose of this application is to address the above problems and provide a troubleshooting method, system, equipment, medium and product for profile control construction to improve the troubleshooting efficiency during profile control construction.

[0006] In a first aspect, the present application provides a method for troubleshooting profile control construction, the method comprising:

[0007] Obtain the plunger pump outlet pressure, plunger pump outlet flow, inverter status, inverter frequency and mixing tank liquid level;

[0008] Compare the plunger pump outlet pressure and the plunger pump outlet flow rate with a first threshold value to obtain a comparison result;

[0009] If the comparison result indicates that the plunger pump outlet pressure is equal to the first threshold value and the plunger pump outlet flow rate is equal to the first threshold value, then determining whether the inverter state is a no-output state;

[0010] If the inverter is in a state of no output, first fault information is generated, wherein the first fault information indicates that the cause of the fault is that the inverter has no output;

[0011] If the inverter state is an output state, determining whether the inverter frequency is within a first interval;

[0012] If the frequency of the inverter is not within the first interval, second fault information is generated, and the second fault information indicates that the cause of the fault is abnormal frequency of the inverter;

[0013] If the frequency converter frequency is within the first interval, determining whether the liquid level of the mixing tank is less than a second threshold;

[0014] If the liquid level in the mixing tank is less than the second threshold, third fault information is generated, wherein the third fault information indicates that the cause of the fault is that the liquid level in the mixing tank is low;

[0015] If the liquid level in the mixing tank is greater than or equal to the second threshold, fourth fault information is generated, and the fourth fault information indicates that the cause of the fault is that the air or liquid inlet valve of the plunger pump is not opened.

[0016] In some possible embodiments, the method further includes:

[0017] If the comparison result indicates that the plunger pump outlet pressure is not equal to the first threshold value and the plunger pump outlet flow rate is not equal to the first threshold value, determining whether the plunger pump outlet pressure is greater than a fourth threshold value;

[0018] If the plunger pump outlet pressure is greater than the fourth threshold, fifth fault information is generated, and the fifth fault information indicates that the cause of the fault is that the plunger pump is overloaded;

[0019] If the plunger pump outlet pressure is less than the third threshold value, and the fourth threshold value is greater than the third threshold value, sixth fault information is generated, and the sixth fault information indicates that the cause of the fault is leakage of the plunger pump liquid inlet pipe;

[0020] If the plunger pump outlet pressure value is within the third interval, the wellhead oil pressure of the oil production well is obtained, the minimum value of the third interval is the third threshold value, and the maximum value is the fourth threshold value;

[0021] If the plunger pump outlet flow rate is less than the fifth threshold, determining whether the wellhead oil pressure is greater than a sixth threshold;

[0022] If the wellhead oil pressure is greater than the sixth threshold, seventh fault information is generated, and the seventh fault information indicates that the fault cause is a wellhead pressure sensor communication fault;

[0023] If the wellhead oil pressure is less than or equal to the sixth threshold, determining whether the wellhead oil pressure is equal to a seventh threshold;

[0024] If the wellhead oil pressure is equal to the seventh threshold, eighth fault information is generated, and the eighth fault information indicates that the fault cause is a wellhead pressure sensor fault;

[0025] If the wellhead oil pressure is not equal to the seventh threshold, ninth fault information is generated, and the ninth fault information indicates that the cause of the fault is high wellhead pressure.

[0026] In some possible embodiments, the method further includes:

[0027] Obtain the wellhead oil pressure of the oil production well;

[0028] If the comparison result indicates that the plunger pump outlet flow rate is not equal to the first threshold value and the plunger pump outlet pressure is equal to the first threshold value, a tenth fault information is generated, and the tenth fault information indicates that the fault cause is a fault of the plunger pump outlet pressure sensor;

[0029] If the plunger pump outlet flow rate is less than the fifth threshold, determining whether the wellhead oil pressure is greater than a sixth threshold;

[0030] If the wellhead oil pressure is greater than the sixth threshold, seventh fault information is generated, and the seventh fault information indicates that the fault cause is a wellhead pressure sensor communication fault;

[0031] If the wellhead oil pressure is less than or equal to the sixth threshold, determining whether the wellhead oil pressure is equal to a seventh threshold;

[0032] If the wellhead oil pressure is equal to the seventh threshold, eighth fault information is generated, and the eighth fault information indicates that the fault cause is a wellhead pressure sensor fault;

[0033] If the wellhead oil pressure is not equal to the seventh threshold, ninth fault information is generated, and the ninth fault information indicates that the cause of the fault is high wellhead pressure.

[0034] In some possible embodiments, the method further includes:

[0035] Obtaining the wellhead casing pressure of the oil production well;

[0036] Determining whether the wellhead casing pressure is less than an eighth threshold;

[0037] If the wellhead casing pressure is less than the eighth threshold, an eleventh fault information is generated, and the eleventh fault information indicates that the cause of the fault is casing leakage.

[0038] In some possible embodiments, the method further includes:

[0039] Get the flow growth rate of the plunger pump outlet;

[0040] If the increase rate of the flow rate at the outlet of the plunger pump is greater than a ninth threshold, determining whether the inverter state is a state of no output;

[0041] If the inverter is in a state of no output, first fault information is generated, wherein the first fault information indicates that the cause of the fault is that the inverter has no output;

[0042] If the inverter state is an output state, determining whether the inverter frequency is within a first interval;

[0043] If the frequency of the inverter is not within the first interval, second fault information is generated, and the second fault information indicates that the cause of the fault is abnormal frequency of the inverter;

[0044] If the frequency of the frequency converter is within the first interval, twelfth fault information is generated, and the twelfth fault information indicates that the cause of the fault is that there is a foreign object in the plunger pump.

[0045] In a second aspect, the present application provides a troubleshooting system for profile control construction, comprising:

[0046] Acquisition module: used to obtain the plunger pump outlet pressure, plunger pump outlet flow, inverter status, inverter frequency and mixing tank liquid level;

[0047] Comparison module: used for comparing the outlet pressure of the plunger pump and the outlet flow rate of the plunger pump with a preset threshold value to obtain a comparison result;

[0048] Troubleshooting module: used for judging whether the inverter state is a state of no output if the comparison result indicates that the outlet pressure of the plunger pump is equal to the first threshold value and the outlet flow rate of the plunger pump is equal to the first threshold value; if the inverter state is a state of no output, generating a first fault message, the first fault message indicating that the cause of the fault is that the inverter has no output; if the inverter state is a state of output, judging whether the inverter frequency is within the first interval; if the inverter frequency is not within the first interval, generating a second fault message, the second fault message indicating that the cause of the fault is that the inverter frequency is abnormal; if the inverter frequency is within the first interval, judging whether the liquid level of the mixing tank is less than the second threshold value; if the liquid level of the mixing tank is less than the second threshold value, generating a third fault message, the third fault message indicating that the cause of the fault is that the liquid level of the mixing tank is low; if the liquid level of the mixing tank is greater than or equal to the second threshold value, generating a fourth fault message, the fourth fault message indicating that the cause of the fault is that the air intake or liquid intake valve of the plunger pump is not opened.

[0049] In some possible implementations, the troubleshooting module is also used to determine whether the plunger pump outlet pressure is greater than a fourth threshold value if the comparison result indicates that the plunger pump outlet pressure is not equal to the first threshold value and the plunger pump outlet flow rate is not equal to the first threshold value; if the plunger pump outlet pressure is greater than the fourth threshold value, a fifth fault message is generated, and the fifth fault message indicates that the cause of the fault is plunger pump overload; if the plunger pump outlet pressure is less than the third threshold value and the fourth threshold value is greater than the third threshold value, a sixth fault message is generated, and the sixth fault message indicates that the cause of the fault is air leakage in the plunger pump inlet pipe; if the plunger pump outlet pressure value is within a third interval, the wellhead oil pressure of the oil well is obtained, and the third interval is The minimum value is the third threshold value, and the maximum value is the fourth threshold value; if the plunger pump outlet flow is less than the fifth threshold value, it is determined whether the wellhead oil pressure is greater than the sixth threshold value; if the wellhead oil pressure is greater than the sixth threshold value, a seventh fault message is generated, and the seventh fault message indicates that the cause of the fault is a wellhead pressure sensor communication failure; if the wellhead oil pressure is less than or equal to the sixth threshold value, it is determined whether the wellhead oil pressure is equal to the seventh threshold value; if the wellhead oil pressure is equal to the seventh threshold value, an eighth fault message is generated, and the eighth fault message indicates that the cause of the fault is a wellhead pressure sensor failure; if the wellhead oil pressure is not equal to the seventh threshold value, a ninth fault message is generated, and the ninth fault message indicates that the cause of the fault is high wellhead pressure.

[0050] In some possible implementations, the troubleshooting module is also used to obtain the wellhead oil pressure of the oil production well; if the comparison result indicates that the plunger pump outlet flow is not equal to the first threshold and the plunger pump outlet pressure is equal to the first threshold, a tenth fault message is generated, and the tenth fault message indicates that the cause of the fault is a plunger pump outlet pressure sensor failure; if the plunger pump outlet flow is less than the fifth threshold, it is determined whether the wellhead oil pressure is greater than the sixth threshold; if the wellhead oil pressure is greater than the sixth threshold, a seventh fault message is generated, and the seventh fault message indicates that the cause of the fault is a wellhead pressure sensor communication failure; if the wellhead oil pressure is less than or equal to the sixth threshold, it is determined whether the wellhead oil pressure is equal to the seventh threshold; if the wellhead oil pressure is equal to the seventh threshold, an eighth fault message is generated, and the eighth fault message indicates that the cause of the fault is a wellhead pressure sensor failure; if the wellhead oil pressure is not equal to the seventh threshold, a ninth fault message is generated, and the ninth fault message indicates that the cause of the fault is high wellhead pressure.

[0051] In some possible implementations, the troubleshooting module is also used to obtain the wellhead casing pressure of the oil well; determine whether the wellhead casing pressure is less than an eighth threshold; if the wellhead casing pressure is less than the eighth threshold, generate an eleventh fault information, and the eleventh fault information indicates that the cause of the fault is casing leakage.

[0052] In some possible implementations, the troubleshooting module is also used to obtain the growth rate of the plunger pump outlet flow rate; if the growth rate of the plunger pump outlet flow rate is greater than a ninth threshold, it is determined whether the inverter state is a state of no output; if the inverter state is a state of no output, a first fault message is generated, and the first fault message indicates that the cause of the fault is that the inverter has no output; if the inverter state is a state of output, it is determined whether the inverter frequency is within a first interval; if the inverter frequency is not within the first interval, a second fault message is generated, and the second fault message indicates that the cause of the fault is abnormal inverter frequency; if the inverter frequency is within the first interval, a twelfth fault message is generated, and the twelfth fault message indicates that the cause of the fault is that there is foreign matter in the plunger pump.

[0053] 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 method described above when executing the computer program.

[0054] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, and the computer program implements the method described above when executed by a processor.

[0055] In a fifth aspect, the present application provides a computer program product, wherein the computer program product comprises instructions, and when the instructions are executed by a computer, the computer performs the method described above.

[0056] Compared with the prior art, the beneficial effects of the present application are as follows: firstly, the plunger pump outlet pressure, plunger pump outlet flow, inverter state, inverter frequency and mixing tank liquid level are obtained, and then the plunger pump outlet pressure and plunger pump outlet flow are compared with the preset threshold value to obtain the comparison result, and then according to the comparison result, the cause of the fault is checked in turn. If the comparison result shows that the plunger pump outlet pressure and the plunger pump outlet flow are close to zero at the same time, the working conditions of the inverter and the mixing tank liquid level are judged in turn. If the inverter or the mixing tank fails, the cause of the fault is prompted. After eliminating the faults of the frequency converter and the mixing tank, it is determined that the cause of the fault is a fault of the plunger pump. If the plunger pump outlet pressure or the plunger pump outlet flow is not close to zero, check whether the plunger pump pressure is too high or too low, or the plunger pump flow is too low. If these faults occur, check the cause of the fault and give a prompt for the cause of the fault so that the user can adjust the system according to the cause of the fault. It can be seen that this method of using the control system to check the cause of the profile adjustment construction can reduce dependence on experienced personnel, eliminate manual troubleshooting and analysis, and improve construction efficiency.

[0057] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in a specific embodiment that does not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solution in this embodiment, the drawings required for use in the description of the embodiment will be briefly introduced below. 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 paying creative work.

[0059] Figure 1 A schematic diagram of an application scenario of a profile control construction process provided in an embodiment of the present application;

[0060] Figure 2 A flowchart of a troubleshooting method for profile control construction provided in an embodiment of the present application;

[0061] Figure 3 A working state curve diagram of a plunger pump provided in an embodiment of the present application;

[0062] Figure 4 A schematic diagram of a troubleshooting system for profile control construction provided in an embodiment of the present application;

[0063] Figure 5 A schematic diagram of a computing device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present application.

[0065] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0066] In order to facilitate the understanding of this application, a brief introduction to the related technology is first given:

[0067] There are a large number of oil wells for oil production in the oil field, and some water injection wells are distributed near the oil wells. Water injection wells are used to increase oil reservoir production. In the process of oil reservoir exploitation, in order to increase oil production, it is necessary to carry out water injection development and profile adjustment and other means of increasing oil reservoir production.

[0068] During the profile control construction process, a profile control fluid with the characteristics of increasing viscosity when in contact with water but not increasing viscosity when in contact with oil is injected into the water injection well to block the high permeability layer to adjust the water absorption profile of the water injection layer section, thereby reducing the permeability of the high permeability layer and increasing the water absorption capacity of the low permeability oil layer. In order to facilitate the introduction of the technical solution of this application, the application scenario of this application is introduced below in conjunction with the accompanying drawings. Figure 1 A schematic diagram of an application scenario of a profile control construction process provided in an embodiment of the present application, such as Figure 1 As shown, the water injection well 4 is near the oil production well 5, and the plunger pump 3 extracts the profile control fluid from the mixing tank 1. Under the control of the frequency converter 2, the profile control fluid is injected into the water injection well 4. During the injection process, the pressure and flow rate at the outlet of the plunger pump 3 need to be controlled within a certain range to achieve a good profile control effect. It should be noted that the application scenario introduced above is only an example of many application scenarios, and the technical solution of this application is not limited to the above application scenario.

[0069] However, during the profile adjustment process, abnormal pressure and flow at the plunger pump outlet often occur, affecting the efficiency of oilfield development. Existing technologies usually require manual analysis to troubleshoot the causes of the abnormal phenomena. This manual analysis and troubleshooting method has very low troubleshooting efficiency.

[0070] In view of this, an embodiment of the present application provides a troubleshooting method for profile control construction, the method comprising:

[0071] First, the plunger pump outlet pressure, plunger pump outlet flow, inverter state, inverter frequency and mixing tank liquid level are obtained, and then the plunger pump outlet pressure and plunger pump outlet flow are compared with the preset threshold value to obtain the comparison result. Then, according to the comparison result, the causes of the fault are checked in turn. If the comparison result shows that the plunger pump outlet pressure and the plunger pump outlet flow are close to zero at the same time, the working conditions of the inverter and the mixing tank liquid level are judged in turn. If the inverter or the mixing tank fails, the cause of the fault is prompted. After eliminating the fault of the inverter and the mixing tank, it is determined that the cause of the fault is a fault of the plunger pump, and a prompt for the cause of the fault is given, so that the user can adjust the system according to the cause of the fault. It can be seen that this method of troubleshooting the cause of the profile adjustment construction through the control system can reduce the dependence on experienced personnel, save manual troubleshooting and analysis, and improve construction efficiency.

[0072] In order to make the technical solution of the present application clearer and easier to understand, a troubleshooting method for profile adjustment construction provided in an embodiment of the present application is introduced below.

[0073] like Figure 2 As shown, the figure is a flow chart of a troubleshooting method for profile control construction provided in an embodiment of the present application, the method comprising the following steps:

[0074] S201. Obtain the plunger pump outlet pressure, plunger pump outlet flow, inverter state, inverter frequency and mixing tank liquid level.

[0075] A pressure sensor and an intelligent electromagnetic flowmeter are installed at the outlet of the plunger pump. The outlet pressure of the plunger pump is obtained through the pressure sensor, and the pump outlet flow rate can be obtained through the intelligent electromagnetic flowmeter. The inverter status refers to the start and stop status of the inverter, and the inverter status and inverter frequency can be obtained through the inverter control cabinet; the mixing tank is used to store the profile control fluid, and the mixing tank level can be obtained through the mixing tank level gauge.

[0076] S202: Compare the plunger pump outlet pressure and the plunger pump outlet flow rate with a first threshold value to obtain a comparison result.

[0077] The first threshold value may be a value close to zero, and the plunger pump outlet pressure and the plunger pump outlet flow are compared with the first threshold value so as to troubleshoot the cause of the abnormality of the plunger pump outlet pressure and the plunger pump outlet flow according to the comparison result.

[0078] S203: If the comparison result indicates that the plunger pump outlet pressure is equal to the first threshold value and the plunger pump outlet flow rate is equal to the first threshold value, determine whether the inverter state is a no-output state.

[0079] The frequency converter directly controls the speed and output of the plunger pump, such as Figure 3 A working state curve diagram of a plunger pump provided in an embodiment of the present application, such as Figure 3 As shown, the horizontal axis represents time and the vertical axis represents the value. a Indicates the inverter status, 0 represents inverter off, 1 represents inverter on, curve b represents the frequency of the inverter in Hz, curve c represents the outlet pressure of the plunger pump in MPa, and curve d Represents the outlet flow rate of the plunger pump in m³ / h. After the inverter is turned on at time point O in the figure, the inverter frequency rises to a stable state in the OA time period, and the outlet flow rate and outlet pressure of the plunger pump reach a stable state. In the AB time period, the inverter frequency is in a stable state, and the outlet flow rate and outlet pressure of the plunger pump reach a stable state and are also in a stable state. At time points B and D, the inverter frequency decreases, and the outlet flow rate and outlet pressure of the plunger pump decrease accordingly in the BC and DE time periods. In the EF time period, the inverter frequency is in a stable state, and the outlet flow rate and outlet pressure of the plunger pump are also stable at a certain value. At time point F, the inverter state changes, and the inverter is in a state of no output. The inverter frequency begins to decrease. At this time, the outlet flow rate and outlet pressure of the plunger pump decrease accordingly, and finally become zero at time point H. It can be seen that the inverter state and inverter frequency are the influencing factors of the outlet pressure and outlet flow of the plunger pump.

[0080] The first threshold value is a value close to zero. When an abnormal situation occurs in which the plunger pump outlet pressure and the plunger pump outlet flow are close to zero, it is determined whether the inverter state is a no-output state.

[0081] S204: If the inverter is in a state of no output, first fault information is generated, and the first fault information indicates that the cause of the fault is that the inverter has no output.

[0082] If the inverter is in a no-output state, the fault is caused by the inverter having no output. In this case, the inverter needs to be turned on.

[0083] S205: If the inverter is in an output state, determine whether the inverter frequency is within a first interval.

[0084] The first interval range is the range under normal working conditions of the inverter. It can be adjusted as needed in actual operation. For example, the inverter frequency is set to X， , and is the frequency value.

[0085] If the inverter is in the output state, continue to determine whether the inverter frequency is within the normal working range.

[0086] S206: If the frequency of the inverter is not within the first interval, generate second fault information, where the second fault information indicates that the cause of the fault is abnormal frequency of the inverter.

[0087] If the inverter frequency is not within the first interval, it indicates that the fault cause is abnormal inverter frequency.

[0088] S207: If the frequency of the frequency converter is within the first interval, determine whether the liquid level in the mixing tank is less than a second threshold.

[0089] The mixing tank is filled with profile control liquid, and the second threshold refers to the liquid level of the profile control liquid that can be normally extracted by the plunger pump. If the frequency of the frequency converter is within the first interval, it is determined whether the liquid level of the mixing tank is lower than the normal liquid level.

[0090] S208. If the liquid level in the mixing tank is less than the second threshold, third fault information is generated, and the third fault information indicates that the cause of the fault is low liquid level in the mixing tank.

[0091] If the mixing tank liquid level is lower than the normal level, it indicates that the fault cause is low mixing tank liquid level.

[0092] S209. If the liquid level in the mixing tank is greater than or equal to the second threshold, fourth fault information is generated, and the fourth fault information indicates that the cause of the fault is that the air or liquid inlet valve of the plunger pump is not opened.

[0093] If the liquid level in the mixing tank is normal, it indicates that the cause of the fault is that the air or liquid inlet valve of the plunger pump is not open.

[0094] The following describes how to judge whether other faults occur in the outlet pressure and outlet flow of the plunger pump when the outlet pressure and outlet flow of the plunger pump are not close to zero. If a fault occurs, the cause of the fault is checked and prompted to the user for reference and decision-making assistance.

[0095] In some embodiments, if the comparison result indicates that the plunger pump outlet pressure is not equal to the first threshold value and the plunger pump outlet flow rate is not equal to the first threshold value, then it is determined whether the plunger pump outlet pressure is greater than the fourth threshold value; if the plunger pump outlet pressure is greater than the fourth threshold value, a fifth fault message is generated, and the fifth fault message indicates that the cause of the fault is plunger pump overload; if the plunger pump outlet pressure is less than the third threshold value and the fourth threshold value is greater than the third threshold value, a sixth fault message is generated, and the sixth fault message indicates that the cause of the fault is air leakage in the plunger pump inlet pipe.

[0096] When the plunger pump outlet pressure and the plunger pump outlet flow are not close to zero, it is determined whether there are other faults in the pump outlet pressure and the plunger pump outlet flow. If there is a fault, the cause of the fault is checked and a fault cause prompt is generated for the user. In actual operation, the order of checking the abnormal pump outlet pressure and the abnormal pump outlet flow is not limited. This application introduces this solution by first checking the cause of the pump outlet pressure fault as an example.

[0097] The plunger pump normally has a pressure range between the third threshold and the fourth threshold. For example, the plunger pump outlet pressure is set to Y , , and If the plunger pump outlet pressure is greater than the fourth threshold, it indicates that the cause of the fault is the plunger pump overload; if the plunger pump outlet pressure is less than the third threshold, it indicates that the cause of the fault is the plunger pump inlet pipe leakage.

[0098] If the plunger pump outlet pressure value is within the normal pressure range, the wellhead oil pressure of the oil well is obtained; if the plunger pump outlet flow rate is less than the fifth threshold, it is determined whether the wellhead oil pressure is greater than the sixth threshold; if the wellhead oil pressure is greater than the sixth threshold, a seventh fault message is generated, and the seventh fault message indicates that the cause of the fault is a wellhead pressure sensor communication failure; if the wellhead oil pressure is less than or equal to the sixth threshold, it is determined whether the wellhead oil pressure is equal to the seventh threshold; if the wellhead oil pressure is equal to the seventh threshold, an eighth fault message is generated, and the eighth fault message indicates that the cause of the fault is a wellhead pressure sensor failure; if the wellhead oil pressure is not equal to the seventh threshold, a ninth fault message is generated, and the ninth fault message indicates that the cause of the fault is high wellhead pressure.

[0099] When the plunger pump outlet pressure value is within the normal range, the cause of the abnormal plunger pump outlet flow is checked through the wellhead oil pressure of the oil production well. In this application, the pressure sensor at the outlet of the oil production well adopts a long-range radio (Long Range Radio, LoRa) communication method, which is far away from the control system, and a wellhead pressure sensor communication failure may occur. When the plunger pump outlet flow is lower than the normal working range and the profile adjustment fluid cannot be injected into the water injection well, according to the value of the wellhead oil pressure, check in turn whether the wellhead pressure sensor of the oil production well is faulty and the communication failure of the wellhead pressure sensor of the oil production well is faulty. If a fault occurs, the cause of the fault is prompted. If the wellhead pressure sensor of the oil production well is normal and the communication of the wellhead pressure sensor of the oil production well is normal, it is determined that the reason for the small plunger pump outlet flow is the high wellhead oil pressure.

[0100] The following describes the troubleshooting process when the plunger pump outlet flow is not close to zero and the plunger pump outlet pressure is close to zero.

[0101] When the plunger pump outlet flow is not close to zero and the plunger pump outlet pressure is close to zero, it is first prompted that the cause of the fault is a failure of the plunger pump outlet pressure sensor. The plunger pump outlet pressure is close to zero due to the failure of the plunger pump outlet pressure sensor. Then the abnormal situation of the plunger pump outlet flow is checked. This troubleshooting process has been described in detail in the previous embodiment and will not be repeated here.

[0102] In some embodiments, the wellhead casing pressure of the oil well is obtained, and the wellhead casing pressure is compared with a preset threshold value, and whether the wellhead casing pressure is abnormal is determined based on the comparison result. Specifically, it is determined whether the wellhead casing pressure is less than the eighth threshold value; if the wellhead casing pressure is less than the eighth threshold value, an eleventh fault information is generated, and the eleventh fault information indicates that the cause of the fault is casing leakage.

[0103] In some embodiments, the growth rate of the plunger pump outlet flow is obtained. When the plunger pump outlet flow fluctuates, the growth rate of the plunger pump outlet flow increases. At this time, first check whether the frequency converter has an abnormality. If the frequency converter has an abnormality, the cause of the plunger pump outlet fluctuation is the frequency converter abnormality. If the frequency converter has no abnormality, it is determined that the cause of the plunger pump flow fluctuation is the plunger pump abnormality.

[0104] Specifically, if the growth rate of the plunger pump outlet flow rate is greater than the ninth threshold, it is determined whether the inverter state is a state of no output; if the inverter state is a state of no output, the cause of the fault is that the inverter has no output; if the inverter state is a state of output, it is determined whether the inverter frequency is within the first interval; if the inverter frequency is not within the first interval, the cause of the fault is abnormal inverter frequency; if the inverter frequency is within the first interval, the cause of the fault is foreign matter in the plunger pump.

[0105] In some embodiments, if the cause of the fault includes no output of the frequency converter, authorization is given to turn on the frequency converter; if the cause of the fault includes low liquid level in the mixing tank, authorization is given to adjust the liquid level in the mixing tank; if the cause of the fault includes air leakage in the plunger pump inlet pipe, authorization is given to turn off the plunger pump; if the cause of the fault includes high oil pressure at the wellhead, authorization is given to adjust the frequency of the frequency converter.

[0106] Combination of the above Figure 2 and Figure 3 A troubleshooting method for profile adjustment construction provided in an embodiment of the present application is introduced in detail. Hereinafter, a troubleshooting system for profile adjustment construction, an electronic device and a computer-readable storage medium will be introduced in conjunction with the accompanying drawings.

[0107] like Figure 4 As shown, this figure is a schematic diagram of a troubleshooting system for profile control construction provided in an embodiment of the present application, the system comprising:

[0108] Acquisition module 41: used to acquire the plunger pump outlet pressure, plunger pump outlet flow, inverter state, inverter frequency and mixing tank liquid level;

[0109] Comparison module 42: used for comparing the outlet pressure of the plunger pump and the outlet flow rate of the plunger pump with a preset threshold value to obtain a comparison result;

[0110] Troubleshooting module 43: used to determine whether the inverter state is a state of no output if the comparison result indicates that the plunger pump outlet pressure is equal to the first threshold value and the plunger pump outlet flow rate is equal to the first threshold value; if the inverter state is a state of no output, generate a first fault message, the first fault message indicating that the cause of the fault is that the inverter has no output; if the inverter state is an output state, determine whether the inverter frequency is within a first interval; if the inverter frequency is not within the first interval, generate a second fault message, the second fault message indicating that the cause of the fault is an abnormal inverter frequency; if the inverter frequency is within the first interval, determine whether the mixing tank liquid level is less than a second threshold value; if the mixing tank liquid level is less than the second threshold value, generate a third fault message, the third fault message indicating that the cause of the fault is a low mixing tank liquid level; if the mixing tank liquid level is greater than or equal to the second threshold value, generate a fourth fault message, the fourth fault message indicating that the cause of the fault is that the plunger pump air or liquid inlet valve is not open.

[0111] In some possible implementations, the troubleshooting module 43 is also used to determine whether the plunger pump outlet pressure is greater than a fourth threshold value if the comparison result indicates that the plunger pump outlet pressure is not equal to the first threshold value and the plunger pump outlet flow rate is not equal to the first threshold value; if the plunger pump outlet pressure is greater than the fourth threshold value, a fifth fault message is generated, and the fifth fault message indicates that the cause of the fault is an overload of the plunger pump; if the plunger pump outlet pressure is less than the third threshold value and the fourth threshold value is greater than the third threshold value, a sixth fault message is generated, and the sixth fault message indicates that the cause of the fault is an air leakage in the plunger pump inlet pipe; if the plunger pump outlet pressure value is within a third interval, the wellhead oil pressure of the oil well is obtained, and the third interval The minimum value is the third threshold value, and the maximum value is the fourth threshold value; if the plunger pump outlet flow is less than the fifth threshold value, it is determined whether the wellhead oil pressure is greater than the sixth threshold value; if the wellhead oil pressure is greater than the sixth threshold value, a seventh fault message is generated, and the seventh fault message indicates that the cause of the fault is a wellhead pressure sensor communication failure; if the wellhead oil pressure is less than or equal to the sixth threshold value, it is determined whether the wellhead oil pressure is equal to the seventh threshold value; if the wellhead oil pressure is equal to the seventh threshold value, an eighth fault message is generated, and the eighth fault message indicates that the cause of the fault is a wellhead pressure sensor failure; if the wellhead oil pressure is not equal to the seventh threshold value, a ninth fault message is generated, and the ninth fault message indicates that the cause of the fault is high wellhead pressure.

[0112] In some possible implementations, the troubleshooting module 43 is also used to obtain the wellhead oil pressure of the oil production well; if the comparison result indicates that the plunger pump outlet flow is not equal to the first threshold and the plunger pump outlet pressure is equal to the first threshold, a tenth fault message is generated, and the tenth fault message indicates that the cause of the fault is a plunger pump outlet pressure sensor failure; if the plunger pump outlet flow is less than the fifth threshold, it is determined whether the wellhead oil pressure is greater than the sixth threshold; if the wellhead oil pressure is greater than the sixth threshold, a seventh fault message is generated, and the seventh fault message indicates that the cause of the fault is a wellhead pressure sensor communication failure; if the wellhead oil pressure is less than or equal to the sixth threshold, it is determined whether the wellhead oil pressure is equal to the seventh threshold; if the wellhead oil pressure is equal to the seventh threshold, an eighth fault message is generated, and the eighth fault message indicates that the cause of the fault is a wellhead pressure sensor failure; if the wellhead oil pressure is not equal to the seventh threshold, a ninth fault message is generated, and the ninth fault message indicates that the cause of the fault is high wellhead pressure.

[0113] In some possible implementations, the troubleshooting module 43 is also used to obtain the wellhead casing pressure of the oil well; determine whether the wellhead casing pressure is less than an eighth threshold; if the wellhead casing pressure is less than the eighth threshold, generate an eleventh fault information, and the eleventh fault information indicates that the cause of the fault is casing leakage.

[0114] In some possible implementations, the troubleshooting module 43 is also used to obtain the growth rate of the plunger pump outlet flow rate; if the growth rate of the plunger pump outlet flow rate is greater than a ninth threshold, it is determined whether the inverter state is a state of no output; if the inverter state is a state of no output, a first fault message is generated, and the first fault message indicates that the cause of the fault is that the inverter has no output; if the inverter state is an output state, it is determined whether the inverter frequency is within a first interval; if the inverter frequency is not within the first interval, a second fault message is generated, and the second fault message indicates that the cause of the fault is an abnormal inverter frequency; if the inverter frequency is within the first interval, a twelfth fault message is generated, and the twelfth fault message indicates that the cause of the fault is that there is foreign matter in the plunger pump.

[0115] The profile adjustment construction troubleshooting system provided in the embodiment of the present application can correspond to executing the profile adjustment construction troubleshooting method described in the embodiment of the present application, and the above functions of each module of the system correspond to implementing Figure 2 For the sake of brevity, the corresponding process of the method shown will not be repeated here.

[0116] An embodiment of the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, a troubleshooting method for profile adjustment construction as described in the above embodiment is implemented.

[0117] like Figure 5 As shown, this figure is a schematic diagram of a computing device provided in an embodiment of the present application, such as Figure 5 As shown, computing device 400 includes bus 701, processor 702, communication interface 703 and memory 704. Processor 702, memory 704 and communication interface 703 communicate with each other via bus 701.

[0118] The bus 701 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0119] The processor 702 may be any one or more of a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor (MP), or a digital signal processor (DSP).

[0120] The communication interface 703 is used for communicating with the outside.

[0121] The memory 704 may include a volatile memory, such as a random access memory (RAM). The memory 704 may also include a non-volatile memory, such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD), or a solid state drive (SSD).

[0122] The memory 704 stores executable codes, and the processor 702 executes the executable codes to perform the aforementioned troubleshooting method for profile adjustment construction.

[0123] The embodiment of the present application also provides a computer-readable storage medium. The computer-readable storage medium can be any available medium that can be stored by a computing device or a data storage device such as a data center containing one or more available media. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid-state hard disk). The computer-readable storage medium includes instructions that instruct the computing device to execute the above-mentioned troubleshooting method for profile adjustment construction.

[0124] The embodiment of the present application further provides a computer program product, which includes one or more computer instructions. When the computer instructions are loaded and executed on a computing device, the process or function described in the embodiment of the present application is generated in whole or in part.

[0125] The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer or data center to another website, computer or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0126] When the computer program product is executed by a computer, the computer executes any of the aforementioned troubleshooting methods for profile adjustment construction. The computer program product may be a software installation package, and when any of the aforementioned troubleshooting methods for profile adjustment construction needs to be used, the computer program product may be downloaded and executed on a computer.

[0127] The descriptions of the processes or structures corresponding to the above-mentioned figures have different emphases. For parts that are not described in detail in a certain process or structure, please refer to the relevant descriptions of other processes or structures.

[0128] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application.

Claims

1. A troubleshooting method for profile control construction, characterized in that: The method comprises: Obtain the plunger pump outlet pressure, plunger pump outlet flow, inverter state, inverter frequency and mixing tank liquid level, wherein the inverter state is the start / stop state of the inverter; Compare the plunger pump outlet pressure and the plunger pump outlet flow rate with a first threshold value to obtain a comparison result; If the comparison result indicates that the plunger pump outlet pressure is equal to the first threshold value and the plunger pump outlet flow rate is equal to the first threshold value, then determining whether the inverter state is a no-output state; If the inverter is in a state of no output, first fault information is generated, wherein the first fault information indicates that the cause of the fault is that the inverter has no output; If the inverter state is an output state, determining whether the inverter frequency is within a first interval; If the frequency of the inverter is not within the first interval, second fault information is generated, and the second fault information indicates that the cause of the fault is abnormal frequency of the inverter; If the frequency converter frequency is within the first interval, determining whether the liquid level of the mixing tank is less than a second threshold; If the liquid level in the mixing tank is less than the second threshold, third fault information is generated, wherein the third fault information indicates that the cause of the fault is that the liquid level in the mixing tank is low; If the liquid level in the mixing tank is greater than or equal to the second threshold, fourth fault information is generated, and the fourth fault information indicates that the cause of the fault is that the air or liquid inlet valve of the plunger pump is not opened.

2. The method according to claim 1, characterized in that: The method further comprises: If the comparison result indicates that the plunger pump outlet pressure is not equal to the first threshold value and the plunger pump outlet flow rate is not equal to the first threshold value, determining whether the plunger pump outlet pressure is greater than a fourth threshold value; If the plunger pump outlet pressure is greater than the fourth threshold, fifth fault information is generated, and the fifth fault information indicates that the cause of the fault is that the plunger pump is overloaded; If the plunger pump outlet pressure is less than the third threshold value, and the fourth threshold value is greater than the third threshold value, sixth fault information is generated, and the sixth fault information indicates that the cause of the fault is leakage of the plunger pump liquid inlet pipe; If the plunger pump outlet pressure value is within the third interval, the wellhead oil pressure of the oil production well is obtained, the minimum value of the third interval is the third threshold value, and the maximum value is the fourth threshold value; If the plunger pump outlet flow rate is less than the fifth threshold, determining whether the wellhead oil pressure is greater than a sixth threshold; If the wellhead oil pressure is greater than the sixth threshold, seventh fault information is generated, and the seventh fault information indicates that the fault cause is a wellhead pressure sensor communication fault; If the wellhead oil pressure is less than or equal to the sixth threshold, determining whether the wellhead oil pressure is equal to a seventh threshold; If the wellhead oil pressure is equal to the seventh threshold, eighth fault information is generated, and the eighth fault information indicates that the fault cause is a wellhead pressure sensor fault; If the wellhead oil pressure is not equal to the seventh threshold, ninth fault information is generated, and the ninth fault information indicates that the cause of the fault is high wellhead pressure.

3. The method according to claim 2, characterized in that The method further comprises: Obtain the wellhead oil pressure of the oil production well; If the comparison result indicates that the plunger pump outlet flow rate is not equal to the first threshold value and the plunger pump outlet pressure is equal to the first threshold value, a tenth fault information is generated, and the tenth fault information indicates that the fault cause is a fault of the plunger pump outlet pressure sensor; If the plunger pump outlet flow rate is less than the fifth threshold, determining whether the wellhead oil pressure is greater than a sixth threshold; If the wellhead oil pressure is greater than the sixth threshold, seventh fault information is generated, and the seventh fault information indicates that the fault cause is a wellhead pressure sensor communication fault; If the wellhead oil pressure is less than or equal to the sixth threshold, determining whether the wellhead oil pressure is equal to a seventh threshold; If the wellhead oil pressure is equal to the seventh threshold, eighth fault information is generated, and the eighth fault information indicates that the fault cause is a wellhead pressure sensor fault; If the wellhead oil pressure is not equal to the seventh threshold, ninth fault information is generated, and the ninth fault information indicates that the cause of the fault is high wellhead pressure.

4. The method according to claim 3, characterized in that The method further comprises: Obtaining the wellhead casing pressure of the oil production well; Determining whether the wellhead casing pressure is less than an eighth threshold; If the wellhead casing pressure is less than the eighth threshold, an eleventh fault information is generated, and the eleventh fault information indicates that the cause of the fault is casing leakage.

5. The method according to claim 4, characterized in that The method further comprises: Get the flow growth rate of the plunger pump outlet; If the increase rate of the flow rate at the outlet of the plunger pump is greater than a ninth threshold, determining whether the inverter state is a state of no output; If the inverter is in a state of no output, first fault information is generated, wherein the first fault information indicates that the cause of the fault is that the inverter has no output; If the inverter state is an output state, determining whether the inverter frequency is within a first interval; If the frequency of the inverter is not within the first interval, second fault information is generated, and the second fault information indicates that the cause of the fault is abnormal frequency of the inverter; If the frequency of the frequency converter is within the first interval, twelfth fault information is generated, and the twelfth fault information indicates that the cause of the fault is that there is a foreign object in the plunger pump.

6. A troubleshooting system for profile control construction, characterized in that: The system comprises: Acquisition module: used to acquire the plunger pump outlet pressure, plunger pump outlet flow, inverter state, inverter frequency and mixing tank liquid level, wherein the inverter state is the start and stop state of the inverter; Comparison module: used for comparing the outlet pressure of the plunger pump and the outlet flow rate of the plunger pump with a preset threshold value to obtain a comparison result; Troubleshooting module: used for judging whether the inverter state is a state of no output if the comparison result indicates that the outlet pressure of the plunger pump is equal to the first threshold value and the outlet flow rate of the plunger pump is equal to the first threshold value; if the inverter state is a state of no output, generating a first fault message, the first fault message indicating that the cause of the fault is that the inverter has no output; if the inverter state is a state of output, judging whether the inverter frequency is within the first interval; if the inverter frequency is not within the first interval, generating a second fault message, the second fault message indicating that the cause of the fault is that the inverter frequency is abnormal; if the inverter frequency is within the first interval, judging whether the liquid level of the mixing tank is less than the second threshold value; if the liquid level of the mixing tank is less than the second threshold value, generating a third fault message, the third fault message indicating that the cause of the fault is that the liquid level of the mixing tank is low; if the liquid level of the mixing tank is greater than or equal to the second threshold value, generating a fourth fault message, the fourth fault message indicating that the cause of the fault is that the air intake or liquid intake valve of the plunger pump is not opened.

7. The system according to claim 6, characterized in that The troubleshooting module is further configured to determine whether the plunger pump outlet pressure is greater than a fourth threshold value if the comparison result indicates that the plunger pump outlet pressure is not equal to the first threshold value and the plunger pump outlet flow rate is not equal to the first threshold value; If the plunger pump outlet pressure is greater than the fourth threshold, a fifth fault message is generated, and the fifth fault message indicates that the cause of the fault is the plunger pump overload; if the plunger pump outlet pressure is less than the third threshold, and the fourth threshold is greater than the third threshold, a sixth fault message is generated, and the sixth fault message indicates that the cause of the fault is air leakage in the plunger pump inlet pipe; if the plunger pump outlet pressure value is within the third interval, the wellhead oil pressure of the oil production well is obtained, the minimum value of the third interval is the third threshold, and the maximum value is the fourth threshold; if the plunger pump outlet flow is less than the fifth threshold, it is determined whether the wellhead oil pressure is greater than the sixth threshold; If the wellhead oil pressure is greater than the sixth threshold, seventh fault information is generated, and the seventh fault information indicates that the fault cause is a wellhead pressure sensor communication fault; if the wellhead oil pressure is less than or equal to the sixth threshold, it is determined whether the wellhead oil pressure is equal to the seventh threshold; If the wellhead oil pressure is equal to the seventh threshold, the eighth fault information is generated, and the eighth fault information indicates that the cause of the fault is a wellhead pressure sensor failure; if the wellhead oil pressure is not equal to the seventh threshold, the ninth fault information is generated, and the ninth fault information indicates that the cause of the fault is high wellhead pressure.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 5 is implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

10. A computer program product, characterized in that The computer program product comprises instructions, and when the instructions are executed by a computer, the computer performs the method according to any one of claims 1 to 5.

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