Intelligent control management method and equipment for oil well production based on the Internet of Things

Abstract

The present invention discloses an intelligent control and management method and equipment for oil well production based on the Internet of Things, and relates to the technical field of oil well production control. The intelligent control and management method for oil well production based on the Internet of Things includes the following steps: power transmission evaluation; power transmission optimization evaluation; and safety cutoff. The present invention obtains the transmission coefficient of the oil well power transmission line by performing a power transmission evaluation and determines whether to perform oil well power transmission line transmission optimization. If the oil well power transmission line transmission optimization is not performed, a power transmission optimization evaluation is performed to obtain the pressure stability coefficient of the well opening control circuit, and based on the pressure stability coefficient of the well opening control circuit, it is determined whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device, thereby achieving the effect of improving the accuracy of the circuit pressure monitoring data during the oil well safety production control process, and solving the problem of low accuracy of the circuit pressure monitoring data during the oil well safety production control process based on the Internet of Things in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of oil well production control, and in particular to an intelligent control management method and equipment for oil well production based on the Internet of Things. Background Art

[0002] The Internet of Things (IoT) is an emerging technology that connects various physical objects through networks, enabling information exchange and intelligent management. With the continuous development of IoT technology, oil well production management is moving towards intelligentization. IoT-based intelligent control and management methods for oil well production utilize various sensors and intelligent devices to achieve real-time collection and monitoring of oil well production data. Furthermore, they utilize advanced technologies such as cloud computing, big data, and artificial intelligence to analyze and process the collected data, providing a scientific basis for production decisions.

[0003] Existing methods mainly ensure stable and safe production by real-time monitoring and control of key parameters such as oil well pressure, temperature, and flow.

[0004] For example, the Industrial Internet-based safety production management system and method, published in patent publication CN117389217B, includes real-time monitoring and data analysis to accurately capture temperature, vibration, and other data from drill bits and drill pipes. A digital twin model, coupled with the Industrial Internet, analyzes and predicts temperature changes at the drill bit and drill pipe joint. By deploying sensors and collecting real-time data, the system continuously monitors key parameters of the drilling site, oil well drilling equipment, and storage tanks. If the data exceeds a preset safety threshold, the system triggers an immediate warning, enabling operators to take timely action to prevent potential accidents.

[0005] For example, the invention patent announcement with announcement number CN106707769B discloses an oilfield management system and method, including: an oil well management module and a cloud management module; the oil well management module is abstracted into a corresponding Web service, and the Web services of a single oil well are combined to form an interoperability model of a single oil well; the interoperability model includes a data acquisition unit for collecting oil well data; it also includes a data transmission unit for storing and transmitting the oil well data to the cloud management module; it is also used to update the local algorithm library according to the optimization control strategy; it also includes a control unit for adjusting the production strategy of the oil well in real time according to the updated local algorithm library; the cloud management module includes a data management unit for receiving and storing the oil well data sent by the interoperability model; it also includes a strategy calculation unit for calculating the optimization strategy of the oil well based on the received oil well data, and sending the optimization strategy to the interoperability model.

[0006] The above technology has at least the following technical problems:

[0007] In the existing technology, due to the possible presence of a large number of metal ions, electrolytes and other interfering substances in a corrosive environment, these substances may interfere with the voltage stability of the transmission line and then interfere with the pressure stability of the oil well control loop, resulting in the problem of low accuracy of loop pressure monitoring data during oil well safety production control based on the Internet of Things. Summary of the Invention

[0008] The present invention solves the problem of low accuracy of loop pressure monitoring data in the process of oil well production safety control based on the Internet of Things in the prior art by providing an intelligent control management method and equipment for oil well production based on the Internet of Things, and achieves improved accuracy of loop pressure monitoring data in the process of oil well production safety control.

[0009] The present invention provides an intelligent control and management method for oil well production based on the Internet of Things, comprising the following steps:

[0010] S1, based on the acquired oil well power transmission line transmission stability data, a power transmission evaluation is performed to obtain the oil well power transmission line transmission coefficient, and based on the oil well power transmission line transmission coefficient, it is determined whether to perform oil well power transmission line transmission optimization; S2, if the oil well power transmission line transmission optimization is not performed, a power transmission optimization evaluation is performed based on the acquired well opening control loop pressure stability data to obtain the well opening control loop pressure stability coefficient, the well opening control loop pressure stability coefficient being used to evaluate the well opening control loop pressure stability during the intelligent control of oil well production; S3, based on the well opening control loop pressure stability coefficient, it is determined whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device, the wellhead safety hydraulic cutoff device being used to perform oil well safety production control according to the received cutoff prompt.

[0011] Furthermore, the oil well power transmission line transmission stability data is used to reflect the influence of the oil well power transmission line transmission parameters on the power transmission line transmission stability within a preset time period; the oil well power transmission line transmission parameters include the maximum power of the oil well power transmission line, the maximum voltage of the power transmission line, the maximum current of the power transmission line, the maximum impedance of the power transmission line and the maximum corrosion current of the power transmission line; the well opening control loop pressure stability data includes the pilot supply loop pressure data and the downhole booster pump pressure data; the pilot supply loop pressure data is used to reflect the influence of the pilot supply loop pressure parameters on the control stability of the pilot supply loop pressure within a preset time period Qualitative impact; the pilot supply circuit pressure parameters include the maximum pilot supply circuit pressure, the maximum control valve flow, the maximum fluid flow rate and the pipeline length; the downhole booster pump back pressure data is used to reflect the influence of the downhole booster pump back pressure parameters on the control stability of the downhole booster pump back pressure within a preset time period; the downhole booster pump back pressure parameters include the maximum downhole booster pump back pressure, the maximum fusible plug circuit pressure, the maximum booster pump speed and the maximum booster pump flow; the well opening control circuit pressure stability coefficient includes the pilot supply circuit pressure stability coefficient and the downhole booster pump back pressure stability coefficient.

[0012] Furthermore, the transmission coefficient of the oil well transmission line is obtained by combining the transmission stability data of the oil well transmission line and the preset transmission influence weight group obtained from the database; the transmission stability data of the oil well transmission line is obtained by processing the transmission parameters of the oil well transmission line and the preset transmission threshold and preset transmission weight group obtained from the database; the specific steps for obtaining the transmission stability data of the oil well transmission line are as follows: Step 1, obtaining the oil well power-voltage impact value by processing the maximum evaluation value of the transmission power and voltage, the maximum evaluation value of the transmission power and voltage including the maximum power of the oil well transmission line, the maximum voltage of the transmission line The maximum value, the preset transmission line power maximum threshold, the preset transmission line voltage maximum threshold and the preset transmission line voltage weight; Step 2, by processing the transmission power and current maximum evaluation value to obtain the oil well power-current impact value, the transmission power and current maximum evaluation value includes the oil well transmission line power maximum value, the transmission line current maximum value, the preset transmission line power maximum threshold, the preset transmission line current maximum threshold and the preset transmission line current weight; Step 3, by processing the transmission power and impedance maximum evaluation value to obtain the oil well power-impedance impact value, the transmission power and impedance maximum evaluation value includes the oil well The maximum power of the transmission line, the maximum corrosion current of the transmission line, the preset maximum power threshold of the transmission line, the preset maximum corrosion current threshold and the preset corrosion current weight; Step 4, by processing the maximum evaluation value of the transmission power and the corrosion current, the oil well power-corrosion current impact value is obtained, and the maximum evaluation value of the transmission power and the corrosion current includes the maximum power of the oil well transmission line, the maximum corrosion current of the transmission line, the preset maximum power threshold of the transmission line, the preset maximum corrosion current threshold and the preset corrosion current weight; the transmission stability data of the oil well transmission line includes the oil well power-voltage impact value, the oil well power-current impact value The preset transmission weight group includes a preset transmission line voltage weight, a preset transmission line current weight, a preset transmission line impedance weight and a preset corrosion current weight; the preset transmission impact weight group includes a first oil well power transmission weight value, a second oil well power transmission weight value, a third oil well power transmission weight value and a fourth oil well power transmission weight value.

[0013] Furthermore, the restricted expression of the transmission coefficient of the oil well power transmission line is as follows:

[0014] ;

[0015] Where, Indicates in The transmission coefficient of the oil well transmission line within a preset time period, , Indicates the number of the preset time period, Indicates the total number of preset time periods, Indicates in The oil well power-voltage impact value within a preset time period, Indicates in The oil well power-current impact value within a preset time period, Indicates in The oil well power-impedance impact value within a preset time period, Indicates in Oil well power-corrosion current impact value within a preset time period, Indicates the first weight value of oil well power transmission, represents the second weight value of oil well power transmission, represents the third weight value of oil well power transmission, represents the fourth weight value of oil well power transmission, and e represents a natural constant.

[0016] Furthermore, the specific process of determining whether to perform oil well transmission line transmission optimization based on the oil well transmission line transmission coefficient is as follows: obtaining an oil well transmission line transmission comparison value; when the obtained oil well transmission line transmission comparison value is not higher than 0, it indicates that the oil well transmission line transmission stability is qualified and oil well transmission line transmission optimization is not performed; otherwise, it indicates that the oil well transmission line transmission stability is unqualified and oil well transmission line transmission optimization is performed; the oil well transmission line transmission comparison value is represented by the difference between the oil well transmission line transmission coefficient and a preset transmission influence threshold value obtained from a database.

[0017] Furthermore, the specific process of the oil well transmission line transmission optimization is as follows: sending a prompt to the preset personnel to perform cathodic protection, and at the same time monitoring the transmission coefficient of the oil well transmission line; when the monitored oil well transmission line transmission coefficient is not higher than the preset transmission impact threshold obtained from the database, stopping the cathodic protection, otherwise performing secondary cathodic optimization protection; judging whether the transmission coefficient of the oil well transmission line after the secondary cathodic optimization protection is not higher than the preset transmission impact threshold, if so, stopping the oil well transmission line transmission optimization, otherwise sending an alarm prompt to the preset personnel.

[0018] Furthermore, the specific acquisition process of the pilot supply loop pressure stability coefficient is as follows: SS1, obtain the power transmission and pilot influence factor, the power transmission and pilot influence factor is obtained by processing the pilot influence evaluation value; SS2, obtain the pilot pressure and flow influence value, the pilot pressure and flow influence value is obtained by processing the pilot and flow evaluation value; SS3, obtain the pilot pressure and loop influence value, the pilot pressure and loop influence value is obtained by processing the pilot and flow rate evaluation value; SS4, obtain the pilot pressure and length influence value, the pilot pressure and length influence value is obtained by processing the pilot and length evaluation value; SS5, combined with the pilot supply loop pressure data and the preset pilot supply loop pressure weight group obtained from the database for processing; the pilot influence evaluation value includes the power transmission optimization qualification factor, the pilot supply loop pressure maximum value, and the preset pilot supply loop pressure maximum threshold and preset pilot optimization weight obtained from the database; the pilot and flow evaluation value includes the power transmission and pilot influence factor, the control valve flow maximum value, and the A preset control valve flow maximum threshold and a preset control valve flow weight; the pilot and flow rate evaluation value includes the power transmission and pilot influence factor, the maximum fluid flow rate, and the preset maximum flow rate threshold and preset flow rate weight obtained from the database; the pilot and length evaluation value includes the power transmission and pilot influence factor, the pipeline length, and the preset pipeline maximum threshold and pipeline length weight obtained from the database; the pilot supply loop pressure data includes the pilot pressure and flow influence value, the pilot pressure and loop influence value, and the pilot pressure and length influence value; the power transmission optimization qualification factor represents the oil well power transmission line transmission coefficient that is not higher than the preset power transmission influence threshold; the preset pilot supply loop pressure weight group includes a preset pilot first weight value, a preset pilot second weight value, and a preset pilot third weight value; the pilot supply loop pressure stability coefficient is used to evaluate the control stability of the pilot supply loop pressure during the intelligent control process of oil well production; the preset pilot optimization weight is used to reflect the influence of the power transmission optimization qualification factor and the maximum pilot supply loop pressure on the power transmission and pilot influence factor within a preset time period.

[0019] Furthermore, the specific acquisition process of the downhole booster pump post-pressure stability coefficient is as follows: the power transmission and boosting influence factor is obtained by processing the boosting influence evaluation value; the boosting and fusible plug evaluation value is obtained by processing the boosting and speed evaluation value; the boosting and speed influence value is obtained by processing the boosting and flow evaluation value; the downhole booster pump post-pressure stability coefficient is obtained by processing the downhole booster pump post-pressure data and the preset downhole booster pump post-pressure weight obtained from the database; the boosting influence evaluation value includes the power transmission optimization qualification factor, the downhole booster pump post-pressure maximum value, and the preset downhole booster pump post-pressure maximum threshold value and the preset power transmission and boosting weight obtained from the database; the boosting and fusible plug evaluation value includes the power transmission and boosting influence factor, the fusible plug circuit pressure maximum value, and the preset fusible plug circuit pressure maximum threshold value and the preset fusible plug circuit pressure weight obtained from the database; the The boost and speed evaluation value includes the power transmission and boost influence factor, the maximum boost pump speed, and the preset boost pump speed maximum threshold and preset boost pump speed weight obtained from the database; the boost and flow evaluation value includes the power transmission and boost influence factor, the maximum boost pump flow, and the preset boost pump flow maximum threshold and preset boost pump flow weight obtained from the database; the downhole boost pump post-pressure data includes the boost and fusible plug influence value, the boost and speed influence value, and the boost and flow influence value; the downhole boost pump post-pressure stability coefficient is used to evaluate the control stability of the downhole boost pump post-pressure during the intelligent control process of oil well production; the preset downhole boost pump post-pressure weight includes the preset downhole boost pump post-first weight value, the preset downhole boost pump post-second weight value, and the preset downhole boost pump post-third weight value; the preset power transmission and boost weight is used to reflect the influence of the power transmission optimization qualification factor and the maximum downhole boost pump post-pressure on the power transmission and boost influence factor within a preset time period.

[0020] Furthermore, the specific process of judging whether to send a cut-off prompt to the wellhead safety hydraulic cut-off device based on the well opening control circuit pressure stability coefficient is as follows: judging whether the well opening control circuit pressure stability coefficient meets the control circuit pressure stability condition; when the well opening control circuit pressure stability coefficient does not meet the control circuit pressure stability condition, sending a prompt to the preset personnel to re-optimize the oil well power transmission line, otherwise sending a prompt to adjust the downhole safety valve circuit pressure regulating valve; if the control circuit pressure stability condition is still not met after re-optimizing the oil well power transmission line, sending a cut-off prompt to the wellhead safety hydraulic cut-off device to automatically close the cut-off valve and cut off the wellhead gas source; the control circuit pressure stability condition indicates that the pilot supply circuit pressure stability coefficient is within the preset pilot supply circuit pressure stability range obtained from the database, and at the same time, the downhole booster pump post-pressure stability coefficient is within the preset downhole booster pump post-pressure stability range obtained from the database.

[0021] The present invention also provides an electronic device, which includes a memory for storing computer program instructions and a processor for executing program instructions, wherein when the computer program instructions are executed by the processor, the electronic device is triggered to execute the IoT-based intelligent control and management method for oil well production.

[0022] The one or more technical solutions provided by the present invention have at least the following technical effects or advantages:

[0023] 1. By performing a power transmission evaluation, the transmission coefficient of the oil well power transmission line is obtained and it is determined whether to perform oil well power transmission line optimization. If the oil well power transmission line optimization is not performed, a power transmission optimization evaluation is performed to obtain the pressure stability coefficient of the well opening control circuit. Based on the pressure stability coefficient of the well opening control circuit, it is determined whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device, thereby improving the pressure stability of the well opening control circuit and further improving the accuracy of the circuit pressure monitoring data during the oil well safety production control process. This effectively solves the problem of low accuracy of the circuit pressure monitoring data during the oil well safety production control process based on the Internet of Things in the existing technology.

[0024] 2. The transmission coefficient of the oil well transmission line is obtained by combining the transmission stability data of the oil well transmission line and the preset transmission influence weight group, and then the pilot supply loop pressure data and the preset pilot supply loop pressure weight group are processed to obtain the pilot supply loop pressure stability coefficient. Finally, the downhole booster pump post-pressure data and the preset downhole booster pump post-pressure weight are processed to obtain the downhole booster pump post-pressure stability coefficient, thereby achieving an improvement in the reliability of the control loop pressure monitoring data acquisition, and then achieving an improvement in the accuracy of the control loop pressure monitoring data acquisition.

[0025] 3. By monitoring the transmission coefficient of the oil well transmission line, when the monitored transmission coefficient of the oil well transmission line is not higher than the preset transmission impact threshold obtained from the database, the cathodic protection is stopped, and vice versa, secondary cathodic optimization protection is performed, thereby achieving dynamic optimization of the transmission reliability of the oil well transmission line, and further improving the accuracy of the transmission optimization of the oil well transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A flowchart of an intelligent control and management method for oil well production based on the Internet of Things provided by an embodiment of the present invention;

[0027] Figure 2 This is a statistical diagram of the changes in the pressure stability coefficient after the downhole booster pump, which shows the pressure and flow impact values ​​provided by the embodiment of the present invention. DETAILED DESCRIPTION

[0028] The embodiments of the present invention provide an intelligent control and management method and device for oil well production based on the Internet of Things, which solves the problem of low accuracy of loop pressure monitoring data in the process of oil well safety production control based on the Internet of Things in the prior art. The transmission transmission evaluation is performed by obtaining the transmission stability data of the oil well power transmission line to obtain the oil well power transmission line transmission coefficient. Then, based on the oil well power transmission line transmission coefficient, it is determined whether to perform oil well power transmission line transmission optimization. If the oil well power transmission line transmission optimization is not performed, the transmission optimization evaluation is performed by obtaining the well opening control loop pressure stability data to obtain the well opening control loop pressure stability coefficient. Finally, based on the well opening control loop pressure stability coefficient, it is determined whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device, thereby improving the accuracy of the loop pressure monitoring data in the process of oil well safety production control.

[0029] The technical solution in the embodiment of the present invention is to solve the problem of low accuracy of loop pressure monitoring data in the process of oil well production safety control based on the Internet of Things. The overall idea is as follows:

[0030] By conducting a power transmission evaluation, the transmission coefficient of the oil well power transmission line is obtained and it is determined whether to perform oil well power transmission line optimization. If the oil well power transmission line optimization is not performed, a power transmission optimization evaluation is performed to obtain the pressure stability coefficient of the well opening control loop. Based on the pressure stability coefficient of the well opening control loop, it is determined whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device, thereby achieving the effect of improving the accuracy of the loop pressure monitoring data during the oil well safety production control process.

[0031] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] like Figure 1 As shown, it is a flowchart of the intelligent control and management method for oil well production based on the Internet of Things provided by an embodiment of the present invention. The method includes the following steps: S1, power transmission evaluation: based on the acquired oil well power transmission line transmission stability data, power transmission evaluation is performed to obtain the oil well power transmission line transmission coefficient, and based on the oil well power transmission line transmission coefficient, it is determined whether to perform oil well power transmission line transmission optimization; S2, power transmission optimization evaluation: if the oil well power transmission line transmission optimization is not performed, power transmission optimization evaluation is performed based on the acquired well opening control loop pressure stability data to obtain the well opening control loop pressure stability coefficient, which is used to evaluate the well opening control loop pressure stability during the intelligent control of oil well production; S3, safety cutoff: based on the well opening control loop pressure stability coefficient, it is determined whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device. The wellhead safety hydraulic cutoff device is a safety protection device that can automatically close the cutoff valve and cut off the wellhead gas source. The wellhead safety hydraulic cutoff device is used to perform oil well safety production control according to the received cutoff prompt.

[0033] In this embodiment, there is a mutual influence between the transmission coefficient of the oil well power transmission line, the pressure stability coefficient of the pilot supply circuit, and the pressure stability coefficient after the downhole booster pump. When the monitored transmission coefficient of the oil well transmission line is higher than the preset transmission impact threshold, it indicates that the oil well transmission line transmission is qualified and transmission optimization assessment is carried out. When the monitored pressure stability coefficient of the well opening control loop meets the control loop pressure stability condition, no safety cutoff is performed. Otherwise, a cutoff prompt is sent to the wellhead safety hydraulic cutoff device. When the transmission coefficient of the oil well transmission line is higher than the preset transmission impact threshold, it may cause control signal distortion and thus inaccurate monitoring of the well opening control loop pressure stability coefficient, thereby affecting the transmission performance of the transmission line and the control effect of the downhole booster pump. Through Internet of Things technology and monitoring devices (such as power meters, voltmeters, ammeters, line impedance testers, pressure sensors, etc.), the oil well transmission line transmission coefficient, pilot supply loop pressure stability coefficient, and downhole booster pump post-pressure stability coefficient are monitored, and corresponding prompt information is sent to preset personnel. This realizes real-time monitoring, intelligent analysis, and remote control of the oil well transmission line transmission stability data and well opening control loop pressure stability data, thereby improving the accuracy of loop pressure monitoring data during oil well safety production control.

[0034] It should be added that the oil well transmission line transmission stability data and the well opening control loop pressure stability data are not zero; the oil well transmission line transmission stability data is used to reflect the impact of the oil well transmission line transmission parameters on the transmission stability of the transmission line within a preset time period; the oil well transmission line transmission parameters include the maximum oil well transmission line power, the maximum transmission line voltage, the maximum transmission line current, the maximum transmission line impedance and the maximum transmission line corrosion current.

[0035] During a preset time period, the power at a preset output point of the oil well transmission line is monitored by a power meter and its maximum value is counted to obtain the maximum power of the oil well transmission line; the voltage value at the preset output point of the oil well transmission line is monitored by a voltmeter and its maximum value is counted to obtain the maximum voltage of the transmission line; the current value at the preset output point of the oil well transmission line is monitored by an ammeter and its maximum value is counted to obtain the maximum current of the transmission line; the impedance at a preset position point of the oil well transmission line is monitored by a line impedance tester and its maximum value is counted to obtain the maximum impedance of the transmission line; the current at a preset position point of the oil well transmission line is monitored by an electrochemical corrosion detector and its maximum value is counted to obtain the maximum corrosion current of the transmission line.

[0036] The pilot supply circuit pressure data is used to reflect the influence of the pilot supply circuit pressure parameters on the control stability of the pilot supply circuit pressure within a preset time period; the pilot supply circuit pressure parameters include the maximum pilot supply circuit pressure, the maximum control valve flow, the maximum fluid flow rate and the pipeline length; the pipeline length indicates the length of the hydraulic oil passing through the corresponding hydraulic pipeline within the preset time period.

[0037] During the preset optimization qualified time period, the pressure value of the preset position point of the pilot supply circuit is monitored by a pressure sensor and its maximum value is counted to obtain the maximum pressure of the pilot supply circuit; the hydraulic oil flow at the preset position point of the control valve outlet is monitored by a flow meter and its maximum value is counted to obtain the maximum flow of the control valve; the hydraulic oil flow rate at the preset position point of the hydraulic pipeline is monitored by a flow meter and its maximum value is counted to obtain the maximum fluid flow rate; the length of the hydraulic pipeline is measured by a laser rangefinder to obtain the pipeline length.

[0038] The downhole booster pump pressure data is used to reflect the influence of the downhole booster pump pressure parameters on the control stability of the downhole booster pump pressure within a preset time period; the downhole booster pump pressure parameters include the maximum downhole booster pump pressure, the maximum fusible plug circuit pressure, the maximum booster pump speed and the maximum booster pump flow.

[0039] During the preset optimization qualified time period, the pressure value at the preset position point of the hydraulic pipeline corresponding to the downhole booster pump is monitored by a pressure sensor and its maximum value is counted to obtain the maximum pressure after the downhole booster pump; the pressure value at the preset position point in the fusible plug circuit is monitored by a pressure sensor and its maximum value is counted to obtain the maximum pressure of the fusible plug circuit; the speed sensor is used to monitor the speed of the preset position point of the downhole booster pump and its maximum value is counted to obtain the maximum speed of the booster pump; the flow rate of the hydraulic oil at the preset position point at the outlet of the booster pump is monitored by a flow meter and its maximum value is counted to obtain the maximum flow rate of the booster pump.

[0040] The pressure stability data of the well opening control circuit includes the pilot supply circuit pressure data and the pressure data after the downhole booster pump; the maximum control valve flow rate indicates the maximum value of the hydraulic oil flow through the control valve within the preset time period; the maximum fluid flow rate indicates the maximum value of the hydraulic oil flow rate in the hydraulic pipeline within the preset time period; the maximum booster pump flow rate indicates the maximum value of the hydraulic oil flow through the booster pump within the preset time period.

[0041] Furthermore, the transmission coefficient of the oil well transmission line is obtained by combining the transmission stability data of the oil well transmission line and the preset transmission influence weight group obtained from the database, and is used to evaluate the transmission stability of the transmission line during the intelligent control process of oil well production; the transmission stability data of the oil well transmission line is obtained by processing the transmission parameters of the oil well transmission line and the preset transmission threshold and preset transmission weight group obtained from the database; the specific steps for obtaining the transmission stability data of the oil well transmission line are as follows: Step 1, the oil well power-voltage influence value is obtained by processing the maximum evaluation value of the transmission power and voltage, and the maximum evaluation value of the transmission power and voltage includes The maximum power of the oil well transmission line, the maximum voltage of the transmission line, the preset maximum power threshold of the transmission line, the preset maximum voltage threshold of the transmission line and the preset voltage weight of the transmission line; Step 2, the oil well power-current impact value is obtained by processing the maximum evaluation value of the transmission power and current, and the maximum evaluation value of the transmission power and current includes the maximum power of the oil well transmission line, the maximum current of the transmission line, the preset maximum power threshold of the transmission line, the preset maximum current threshold of the transmission line and the preset current weight of the transmission line; Step 3, the oil well power-impedance impact value is obtained by processing the maximum evaluation value of the transmission power and impedance, and the transmission power The maximum evaluation value of power and impedance includes the maximum power of oil well transmission line, the maximum corrosion current of transmission line, the preset maximum power threshold of transmission line, the preset maximum corrosion current threshold and the preset corrosion current weight; Step 4, the oil well power-corrosion current impact value is obtained by processing the maximum evaluation value of power and corrosion current, and the maximum evaluation value of power and corrosion current includes the maximum power of oil well transmission line, the maximum corrosion current of transmission line, the preset maximum power threshold of transmission line, the preset maximum corrosion current threshold and the preset corrosion current weight; The transmission stability data of oil well transmission line includes the oil well power-voltage impact value, ... Well power-current impact value, oil well power-impedance impact value and oil well power-corrosion current impact value; the preset transmission threshold includes the preset transmission line power maximum threshold, the preset transmission line voltage maximum threshold, the preset transmission line current maximum threshold, the preset transmission line impedance maximum threshold and the preset corrosion current maximum threshold; the preset transmission weight group includes the preset transmission line voltage weight, the preset transmission line current weight, the preset transmission line impedance weight and the preset corrosion current weight; the preset transmission impact weight group includes the first weight value of oil well transmission, the second weight value of oil well transmission, the third weight value of oil well transmission and the fourth weight value of oil well transmission.

[0042] The preset transmission line voltage weight is used to reflect the influence of the maximum power and maximum voltage of the oil well transmission line within the preset time period on the power-voltage impact value of the oil well; the preset transmission line current weight is used to reflect the influence of the maximum power and maximum current of the oil well transmission line within the preset time period on the power-current impact value of the oil well; the preset transmission line impedance weight is used to reflect the influence of the maximum power and maximum impedance of the oil well transmission line within the preset time period on the power-impedance impact value of the oil well; the preset corrosion current weight is used to reflect the influence of the maximum power and maximum corrosion current of the oil well transmission line within the preset time period on the power-corrosion current impact value of the oil well; the preset transmission impact weight group is used to reflect the influence of the transmission stability data of the oil well transmission line within the preset time period on the transmission coefficient of the oil well transmission line.

[0043] Among them, the restricted expression of the transmission coefficient of the oil well transmission line is as follows:

[0044] ;

[0045] ;

[0046] ;

[0047] ;

[0048] ;

[0049] Where, Indicates in The transmission coefficient of the oil well transmission line within a preset time period, , Indicates the number of the preset time period, Indicates the total number of preset time periods, Indicates in The oil well power-voltage impact value within a preset time period, Indicates in The oil well power-current impact value within a preset time period, Indicates in The oil well power-impedance impact value within a preset time period, Indicates in Oil well power-corrosion current impact value within a preset time period, represents the first weight value of oil well power transmission, represents the second weight value of oil well power transmission, represents the third weight value of oil well power transmission, represents the fourth weight value of oil well power transmission, and e represents a natural constant.

[0050] Indicates in The maximum power of the oil well transmission line within a preset time period, Indicates in The maximum value of the transmission line voltage within a preset time period, Indicates in The maximum current of the transmission line within a preset time period, Indicates in The maximum impedance of the transmission line within a preset time period, Indicates in The maximum value of the corrosion current of the transmission line within a preset time period, Indicates the maximum threshold of the preset transmission line power, Indicates the preset maximum threshold value of the transmission line voltage, Indicates the preset maximum threshold value of the transmission line current, Indicates the preset maximum threshold of transmission line impedance, Indicates the preset maximum corrosion current threshold, represents the preset transmission line voltage weight, represents the preset transmission line current weight, represents the preset transmission line impedance weight, Represents the preset corrosion current weight. The maximum oil well transmission line power and the preset maximum transmission line power threshold have the same unit of watts; the maximum transmission line voltage and the preset maximum transmission line voltage threshold have the same unit of volts; the maximum transmission line current, the maximum transmission line corrosion current, the preset maximum transmission line current threshold, and the preset maximum corrosion current threshold all have the same unit of amperes; and the maximum transmission line impedance and the preset maximum transmission line impedance threshold all have the same unit of ohms.

[0051] In this embodiment, the aforementioned database is a database for storing various types of setting data in the intelligent control and management method for oil well production based on the Internet of Things provided in an embodiment of the present invention. The database includes but is not limited to a preset maximum threshold value of transmission line power, a preset maximum threshold value of transmission line voltage, a preset maximum threshold value of transmission line current, etc., wherein various numerical values ​​are directly set by technical personnel; for example, the preset maximum threshold value of transmission line power is represented by the maximum value of the oil well transmission line power in a historical time period, the preset maximum threshold value of transmission line voltage is represented by the maximum value of the oil well transmission line voltage in a historical time period, the preset maximum threshold value of transmission line current is represented by the maximum value of the oil well transmission line current in a historical time period, the preset maximum threshold value of transmission line impedance is represented by the maximum value of the oil well transmission line impedance in a historical time period, and the preset maximum threshold value of corrosion current is represented by the maximum value of the corrosion current of the oil well transmission line in a historical time period.

[0052] It should be explained that this embodiment provides a set of mapping groups, by inputting real-time oil well transmission line transmission stability data into the mapping group to obtain the corresponding preset transmission impact weight group. The mapping group is used to reflect the mapping relationship between the oil well transmission line transmission stability data and the corresponding preset transmission impact weight group. The mapping relationship in the mapping set can be a one-to-one correspondence or a many-to-one relationship; for example, in this embodiment, the weight value range is 0-1.

[0053] A mapping group reflecting the mapping relationships between the maximum value of the oil well transmission line power and the maximum value of the transmission line voltage, the maximum value of the oil well transmission line power and the maximum value of the transmission line current, the maximum value of the oil well transmission line power and the maximum value of the transmission line impedance, and the maximum value of the oil well transmission line power and the maximum value of the transmission line corrosion current and corresponding preset transmission weight groups is obtained from the database; the corresponding preset transmission weight group is obtained by inputting the real-time maximum value of the oil well transmission line power and the maximum value of the transmission line voltage, the maximum value of the oil well transmission line power and the maximum value of the transmission line current, the maximum value of the oil well transmission line power and the maximum value of the transmission line impedance, and the maximum value of the oil well transmission line power and the maximum value of the transmission line corrosion current into the mapping group; the mapping relationships in the mapping set can be one-to-one or many-to-one; for example, in this embodiment, the value range of the weight is 0-1.

[0054] The algorithm in this embodiment combines analysis of oil well transmission line transmission stability data to determine the transmission coefficient of the oil well transmission line. A larger value for the oil well transmission line transmission stability data indicates a greater degree of interference with the transmission stability of the oil well transmission line due to the maximum power and voltage values, the maximum power and current values, the maximum impedance values, and the maximum corrosion current values, resulting in a smaller transmission coefficient. In summary, the transmission stability data for the oil well transmission line is inversely proportional to the transmission coefficient.

[0055] In the algorithm of this embodiment, the transmission stability data of the oil well power transmission line does not exist independently. The variables are interrelated and require comprehensive analysis. The maximum power of the oil well power transmission line may be affected by the maximum voltage and current of the transmission line. When the maximum voltage and current increase, the maximum power of the oil well power transmission line may also increase, thereby increasing the transmission coefficient of the oil well power transmission line. The larger the maximum impedance of the transmission line, the greater the increase in the current of the transmission line. The larger the current of the transmission line, the greater the heating of the transmission line, which accelerates the aging of the line, thereby reducing the transmission coefficient of the oil well power transmission line. The larger the maximum corrosion current of the transmission line, the greater the degree of corrosion of the transmission line, which limits the increase in the maximum power of the oil well power transmission line, thereby reducing the transmission coefficient of the oil well power transmission line. By analyzing the comprehensive influence of the parameters, an accurate assessment of the transmission stability of the transmission line during the intelligent control of oil well production is achieved, thereby improving the accuracy of the loop pressure monitoring data during the safe production control of the oil well.

[0056] Specifically, assuming the oil well power-voltage impact value The range is 0.4-0.6, the oil well power-current impact value The range is 0.4-0.6, the oil well power-impedance impact value The range is 0.4-0.6, oil well power-corrosion current impact value The range is 0.4-0.6, the first weight value of oil well power transmission , the second weight value of oil well power transmission , the third weight value of oil well power transmission and the fourth weight value of oil well power transmission They are fixed at 0.3, 0.3, 0.2 and 0.2 respectively, as shown in Table 1, which is a statistical table of changes in the transmission coefficient of the oil well power transmission line provided in the embodiment of the present application:

[0057] Table 1 Statistics of changes in transmission coefficient of oil well transmission lines

[0058]

[0059] From the above table, we can see that as the oil well power-voltage impact value , Oil well power-current impact value , Oil well power-impedance impact value and oil well power-corrosion current impact value The gradual increase of the transmission coefficient of the oil well transmission line The gradual decrease means that the transmission stability of the power transmission line in the process of intelligent control of oil well production gradually decreases.

[0060] Furthermore, the specific process of determining whether to perform oil well transmission line transmission optimization based on the oil well transmission line transmission coefficient is as follows: obtaining an oil well transmission line transmission comparison value; when the obtained oil well transmission line transmission comparison value is not higher than 0, it indicates that the oil well transmission line transmission stability is qualified and oil well transmission line transmission optimization is not performed; otherwise, it indicates that the oil well transmission line transmission stability is unqualified and oil well transmission line transmission optimization is performed; the oil well transmission line transmission comparison value is represented by the difference between the oil well transmission line transmission coefficient and a preset transmission influence threshold value obtained from a database.

[0061] It should be added that the specific process of transmission optimization of oil well transmission lines is as follows: sending a prompt to the preset personnel to perform cathodic protection, and monitoring the transmission coefficient of the oil well transmission line at the same time; when the monitored transmission coefficient of the oil well transmission line is not higher than the preset transmission impact threshold obtained from the database, stop the cathodic protection, otherwise perform secondary cathode optimization protection; judge whether the transmission coefficient of the oil well transmission line after the secondary cathode optimization protection is not higher than the preset transmission impact threshold, if so, stop the transmission optimization of the oil well transmission line, otherwise send an alarm prompt to the preset personnel; cathodic protection means making the transmission line a cathode by setting a preset external current; secondary cathode optimization protection means sending a prompt to the preset personnel to adjust the output current of the cathode of the oil well transmission line through a constant potentiostat.

[0062] In this embodiment, the preset transmission impact threshold is represented by the average value of the transmission coefficient of the oil well transmission line in the historical time period; after the preset personnel receives the prompt to perform cathodic protection, a preset auxiliary anode is set at a preset position of the oil well transmission line as the positive electrode of the current source, thereby using the oil well transmission line to be protected as the cathode, and the preset personnel controls the output current of the current source through a constant potentiostat to achieve secondary cathode optimization protection; performing cathodic protection and secondary cathode optimization protection helps to ensure the safe, stable and efficient operation of the oil well transmission line by reducing corrosion and improving line performance, thereby improving the accuracy of the loop pressure monitoring data during the oil well production safety control process.

[0063] Furthermore, the specific acquisition process of the pilot supply loop pressure stability coefficient is as follows: SS1, obtain the transmission and pilot influence factors, the transmission and pilot influence factors are obtained by processing the pilot influence evaluation value; SS2, obtain the pilot pressure and flow influence value, the pilot pressure and flow influence value are obtained by processing the pilot and flow evaluation value; SS3, obtain the pilot pressure and loop influence value, the pilot pressure and loop influence value are obtained by processing the pilot and flow rate evaluation value; SS4, obtain the pilot pressure and length influence value, the pilot pressure and length influence value are obtained by processing the pilot and length evaluation value; SS5, combine the pilot supply loop pressure data and the preset pilot supply loop pressure data obtained from the database to obtain the pilot supply loop pressure stability coefficient. The pilot influence evaluation value includes the power transmission optimization qualification factor, the maximum pilot supply circuit pressure, and the preset pilot supply circuit pressure maximum threshold and the preset pilot optimization weight obtained from the database; the pilot and flow evaluation value includes the power transmission and pilot influence factor, the maximum control valve flow, and the preset control valve flow maximum threshold and the preset control valve flow weight obtained from the database; the pilot and flow rate evaluation value includes the power transmission and pilot influence factor, the maximum fluid flow rate, and the preset flow rate maximum threshold and the preset flow rate weight obtained from the database; the pilot and length evaluation value includes the power transmission and pilot influence factor, the pipeline length, and the preset pipeline maximum threshold and pipeline length obtained from the database Weight; pilot supply circuit pressure data includes pilot pressure and flow influence value, pilot pressure and circuit influence value and pilot pressure and length influence value; well opening control circuit pressure stability coefficient includes pilot supply circuit pressure stability coefficient and downhole booster pump pressure stability coefficient; transmission optimization qualification factor represents the oil well transmission line transmission coefficient that is not higher than the preset transmission influence threshold; preset pilot supply circuit pressure weight group includes preset pilot first weight value, preset pilot second weight value and preset pilot third weight value; preset pilot supply circuit pressure weight group is used to reflect the influence of pilot supply circuit pressure data on pilot supply circuit pressure stability coefficient within a preset time period; pilot supply circuit pressure stability coefficient Used to evaluate the control stability of the pilot supply loop pressure during the intelligent control process of oil well production; the preset pilot optimization weight is used to reflect the influence of the power transmission optimization qualification factor and the maximum pilot supply loop pressure on the power transmission and pilot influence factor within the preset time period; the preset control valve flow weight is used to reflect the influence of the power transmission and pilot influence factor and the maximum control valve flow on the pilot pressure and flow influence value within the preset time period; the preset flow rate weight is used to reflect the influence of the power transmission and pilot influence factor and the maximum fluid flow rate on the pilot pressure and loop influence value within the preset time period; the pipeline length weight is used to reflect the influence of the power transmission and pilot influence factor and the pipeline length on the pilot pressure and length influence value within the preset time period.

[0064] The pilot supply circuit pressure stability coefficient is obtained by the following method:

[0065] ;

[0066] ;

[0067] ;

[0068] ;

[0069] ;

[0070] Where, Indicates in The pilot supply circuit pressure stability coefficient for a preset optimized qualified time period, The preset optimization qualified time period represents the preset time period corresponding to when the transmission comparison value of the oil well power transmission line is not higher than 0. Indicates the number of the preset optimization qualified time period. Indicates the total number of preset optimization qualified time periods. Indicates in The pilot pressure and flow impact values ​​of a preset optimization qualified time period, Indicates in The pilot pressure and loop impact value of a preset optimization qualified time period, Indicates in The pilot pressure and length influence values ​​of the preset optimization qualified time period, Indicates the preset first weight value of the leader, Indicates the preset leader second weight value, represents the preset leading third weight value, and e represents a natural constant.

[0071] Indicates in The maximum value of the pilot supply circuit pressure during a preset optimization qualified time period, Indicates in The transmission and pilot influencing factors of the preset optimization qualified time period, Indicates in The maximum value of the control valve flow rate during the preset optimization qualified time period, Indicates in The maximum value of the fluid flow rate in the preset optimization qualified time period, Indicates in The pipeline length of the preset optimization qualified time period, Indicates in The transmission optimization qualification factor of a preset optimization qualification time period, Indicates the preset maximum threshold value of the pilot supply circuit pressure. Indicates the preset maximum threshold value of the control valve flow rate. Indicates the preset maximum flow rate threshold. Indicates the preset maximum threshold of the pipeline. Indicates the preset control valve flow weight, Indicates the preset flow rate weight, represents the pipe length weight, Indicates the preset leader optimization weight.

[0072] In this embodiment, the preset maximum pilot supply circuit pressure threshold is represented by the maximum pilot supply circuit pressure over a historical period; the preset maximum control valve flow rate threshold is represented by the maximum control valve flow rate over a historical period; the preset maximum flow rate threshold is represented by the maximum hydraulic oil flow rate corresponding to the pilot supply circuit over a historical period; and the preset maximum pipeline threshold is represented by the maximum hydraulic pipeline length over a historical period. The units for the maximum pilot supply circuit pressure and the preset maximum pilot supply circuit pressure threshold are both megapascals; the units for the maximum control valve flow rate and the preset maximum control valve flow rate threshold are both cubic meters per second; the units for the maximum fluid flow rate and the preset maximum flow rate threshold are both meters per second; and the units for the pipeline length and the preset maximum pipeline threshold are both meters.

[0073] It should be explained that a mapping group reflecting the mapping relationship between the pilot supply circuit pressure data and the corresponding preset pilot supply circuit pressure weight group is obtained from the database, and the corresponding preset pilot supply circuit pressure weight group is obtained by inputting the real-time pilot supply circuit pressure data into the mapping group. The mapping relationship in the mapping set can be a one-to-one correspondence or a many-to-one relationship; for example, in this embodiment, the weight value range is 0-1.

[0074] This embodiment pre-sets a mapping group that can reflect the mapping relationship between the power transmission and pilot influence factor and the maximum value of the control valve flow, the power transmission and pilot influence factor and the maximum value of the fluid flow rate, and the power transmission and pilot influence factor and the pipeline length and the corresponding preset control valve flow weight, preset flow rate weight, and pipeline length weight. The mapping group is obtained from the database; by inputting the real-time power transmission and pilot influence factor and the maximum value of the control valve flow, the power transmission and pilot influence factor and the maximum value of the fluid flow rate, and the power transmission and pilot influence factor and the pipeline length into the mapping group, the corresponding preset control valve flow weight, preset flow rate weight, and pipeline length weight are obtained. The mapping relationship in the mapping set can be a one-to-one correspondence or a many-to-one relationship; for example, in this embodiment, the weight value range is 0-1.

[0075] A mapping group reflecting the mapping relationship between the power transmission optimization qualification factor and the maximum value of the pilot supply loop pressure and the corresponding preset pilot optimization weight is obtained from the database. The corresponding preset pilot optimization weight is obtained by inputting the real-time power transmission optimization qualification factor and the maximum value of the pilot supply loop pressure into the mapping group. The mapping relationship in the mapping set can be a one-to-one correspondence or a many-to-one relationship; for example, in this embodiment, the value range of the weight is 0-1.

[0076] This embodiment's algorithm combines pilot supply circuit pressure data with analysis to determine the pilot supply circuit pressure stability coefficient. A larger pilot supply circuit pressure value indicates a greater interference from the pilot-to-flow, pilot-to-flow velocity, and pilot-to-length estimates on the control stability of the pilot supply circuit pressure, resulting in a smaller pilot supply circuit pressure stability coefficient. In summary, the pilot supply circuit pressure data and the pilot supply circuit pressure stability coefficient are inversely proportional.

[0077] In the algorithm of this embodiment, the pilot supply circuit pressure data does not exist independently, and the variables are interrelated, requiring comprehensive analysis. Changes in the maximum value of the pilot supply circuit pressure may affect the flow rate of the control valve and the flow rate of the fluid. When the maximum value of the pilot supply circuit pressure increases, the maximum value of the control valve flow rate may be limited. When the maximum value of the control valve flow rate is larger, it may cause greater resistance in the hydraulic pipeline, which may in turn cause the maximum value of the fluid flow rate to decrease. Changes in the pipeline length will also affect the flow rate of the fluid. When the maximum value of the control valve flow rate remains unchanged, the longer the pipeline length, the longer it takes for the hydraulic oil to pass through the hydraulic pipeline, resulting in increased pressure loss, which may cause the pilot supply circuit pressure stability coefficient to decrease. By analyzing the comprehensive impact of the parameters, an accurate assessment of the control stability of the pilot supply circuit pressure in the intelligent control process of oil well production is achieved, thereby improving the accuracy of the circuit pressure monitoring data during the safe production control of oil wells.

[0078] Furthermore, the specific process of obtaining the downhole booster pump pressure stability coefficient is as follows: the power transmission and boosting influence factor is obtained by processing the boosting influence evaluation value; the boosting and fusible plug evaluation value is obtained by processing the boosting and speed evaluation value; the boosting and speed influence value is obtained by processing the boosting and flow evaluation value; the downhole booster pump pressure stability coefficient is obtained by processing the downhole booster pump pressure data and the preset downhole booster pump pressure weight obtained from the database; the boosting influence evaluation value includes the power transmission optimization qualification factor, the downhole booster pump pressure weight ... The maximum pressure value and the preset maximum pressure threshold after the downhole booster pump and the preset power transmission and boosting weight obtained from the database; the boosting and fusible plug evaluation value includes the power transmission and boosting influence factor, the maximum pressure of the fusible plug circuit and the preset maximum pressure threshold of the fusible plug circuit and the preset fusible plug circuit pressure weight obtained from the database; the boosting and speed evaluation value includes the power transmission and boosting influence factor, the maximum speed of the booster pump and the preset maximum speed threshold of the booster pump and the preset speed weight of the booster pump obtained from the database; the boosting and flow evaluation value includes the power transmission and boosting influence factor, the maximum flow of the booster pump and the preset flow of the booster pump obtained from the database Maximum threshold and preset booster pump flow weight; downhole booster pump post-pressure data includes boosting and fusible plug influence value, boosting and speed influence value, and boosting and flow influence value; downhole booster pump post-pressure stability coefficient is used to evaluate the control stability of downhole booster pump post-pressure during the intelligent control of oil well production; preset downhole booster pump post-pressure weight includes preset downhole booster pump post-first weight value, preset downhole booster pump post-second weight value, and preset downhole booster pump post-third weight value; preset power transmission and boosting weight is used to reflect the influence of power transmission optimization qualification factor and maximum downhole booster pump post-pressure value on power transmission and boosting influence factor within a preset time period; The preset downhole booster pump post-pressure weight is used to reflect the influence of the downhole booster pump post-pressure data on the downhole booster pump post-pressure stability coefficient within the preset time period; the preset fusible plug circuit pressure weight is used to reflect the degree of influence of the power transmission and boosting influence factor and the maximum value of the fusible plug circuit pressure on the boosting and fusible plug influence value within the preset time period; the preset booster pump speed weight is used to reflect the degree of influence of the power transmission and boosting influence factor and the maximum value of the booster pump speed on the boosting and speed influence value within the preset time period; the preset booster pump flow weight is used to reflect the degree of influence of the power transmission and boosting influence factor and the maximum value of the booster pump flow on the boosting and flow influence value within the preset time period.

[0079] Among them, the pressure stability coefficient after the downhole booster pump is obtained by the following method:

[0080] ;

[0081] ;

[0082] ;

[0083] ;

[0084] ;

[0085] Where, Indicates in The pressure stability coefficient after the downhole booster pump in a preset optimized qualified time period, , Indicates the number of the preset optimization qualified time period. Indicates the total number of preset optimization qualified time periods. Indicates in The boost and fusible plug impact values ​​for a preset optimization qualified time period, Indicates in The boost and speed impact values ​​of the preset optimization qualified time period, Indicates in The boost and flow impact values ​​of a preset optimization qualified time period, Indicates the preset first weight value of the leader, Indicates the preset leader second weight value, represents the preset leading third weight value, and e represents a natural constant.

[0086] Indicates in The maximum pressure after the downhole booster pump in the preset optimized qualified time period, Indicates in The transmission and boosting influencing factors of the preset optimization qualified time period, Indicates in The maximum value of the fusible plug circuit pressure during a preset optimization qualified time period, Indicates in The maximum boost pump speed during the preset optimization qualified time period, Indicates in The maximum value of the booster pump flow rate during the preset optimization qualified time period, Indicates in The transmission optimization qualification factor of a preset optimization qualification time period, Indicates the maximum pressure threshold after the downhole booster pump is preset. Preset the maximum threshold value of the fusible plug circuit pressure, Indicates the preset maximum threshold of boost pump speed. Indicates the preset maximum threshold of booster pump flow rate. Indicates the preset fusible plug circuit pressure weight, Indicates the preset boost pump speed weight, Indicates the preset booster pump flow weight, Indicates the preset transmission and boost weights.

[0087] In this embodiment, the preset maximum downhole booster pump pressure threshold is represented by the maximum downhole booster pump pressure during a historical period, the preset maximum fusible plug circuit pressure threshold is represented by the maximum fusible plug circuit pressure during a historical period, the preset maximum booster pump speed threshold is represented by the maximum booster pump speed during a historical period, and the preset maximum booster pump flow rate threshold is represented by the maximum booster pump flow rate during a historical period. The units for the maximum downhole booster pump pressure, the maximum fusible plug circuit pressure, the preset maximum downhole booster pump pressure threshold, and the preset maximum fusible plug circuit pressure threshold are all megapascals; the units for the maximum booster pump speed and the preset maximum booster pump speed threshold are both revolutions per minute; and the units for the maximum booster pump flow rate and the preset maximum booster pump flow rate threshold are both cubic meters per second.

[0088] A mapping group is pre-set in the database, which is used to reflect the mapping relationship between the downhole booster pump post-pressure data and the corresponding preset downhole booster pump post-pressure weight. The mapping relationship can be a one-to-one correspondence or a many-to-one relationship. The corresponding preset downhole booster pump post-pressure weight is obtained by inputting the real-time downhole booster pump post-pressure data into the mapping group; for example, in this embodiment, the weight value range is 0-1.

[0089] A mapping group reflecting the mapping relationships between the power transmission and boosting influence factor and the maximum value of the fusible plug circuit pressure, the power transmission and boosting influence factor and the maximum value of the boosting pump speed, and the power transmission and boosting influence factor and the maximum value of the boosting pump flow rate, and the corresponding preset fusible plug circuit pressure weight, preset boosting pump speed weight, and preset boosting pump flow weight is obtained from the database; the corresponding preset fusible plug circuit pressure weight, preset boosting pump speed weight, and preset boosting pump flow weight are obtained by inputting the real-time power transmission and boosting influence factor and the maximum value of the fusible plug circuit pressure, the power transmission and boosting influence factor and the maximum value of the boosting pump speed, and the power transmission and boosting influence factor and the maximum value of the boosting pump flow rate into the mapping group. The mapping relationships in the mapping group can be one-to-one or many-to-one. For example, in this embodiment, the weight value range is 0-1.

[0090] A mapping group reflecting the mapping relationship between the power transmission optimization qualification factor and the maximum pressure after the downhole booster pump and the corresponding preset power transmission and boosting weights is obtained from the database. The corresponding preset power transmission and boosting weights are obtained by inputting the real-time power transmission optimization qualification factor and the maximum pressure after the downhole booster pump into the mapping group. The mapping relationship in the mapping group can be a one-to-one correspondence or a many-to-one relationship; for example, in this embodiment, the weight value range is 0-1.

[0091] The algorithm in this embodiment combines downhole booster pump pressure data with analysis to determine the downhole booster pump pressure stability coefficient. A higher downhole booster pump pressure data indicates a greater degree of interference from the boost pressure and fusible plug assessment, the boost pressure and speed assessment, and the boost pressure and flow assessment on the downhole booster pump pressure stability, leading to a decrease in the downhole booster pump pressure stability coefficient. In summary, the downhole booster pump pressure data and the downhole booster pump pressure stability coefficient are inversely proportional.

[0092] In the algorithm of this embodiment, the downhole booster pump pressure data does not exist independently, and the variables are interrelated and require comprehensive analysis. The greater the maximum booster pump speed, the more energy consumption the pump may consume, which in turn leads to a corresponding increase in the maximum downhole booster pump pressure; the greater the maximum fusible plug circuit pressure, the more likely it is that the fusible plug will melt, thereby releasing pressure and reducing the maximum downhole booster pump pressure; the greater the maximum booster pump flow rate, the more likely it is that the maximum downhole booster pump pressure will increase due to factors such as increased pipeline resistance and internal leakage of the pump; by analyzing the combined influence of the parameters, an accurate assessment of the control stability of the downhole booster pump pressure during the intelligent control of oil well production is achieved, thereby improving the accuracy of the circuit pressure monitoring data during the safe production control of oil wells.

[0093] Specifically, assuming that the pressure increase and the fusible plug affect the value Fixed to 0.55, boost and speed influence value Fixed to 0.55, boost and flow influence value The range is 0.36-0.76, and the first weight value of the leader is preset , preset the second weight value of the leader , preset leading third weight value They are fixed at 0.3, 0.3, and 0.4 respectively, such as Figure 2 As shown in the figure, the statistical diagram of the pressure stability coefficient after the downhole booster pump is provided by the embodiment of the present invention. Figure 2 It can be seen that as the pressure and flow rate influence values ​​gradually increase, the pressure stability coefficient after the downhole booster pump gradually decreases, which means that the control stability of the pressure after the downhole booster pump gradually decreases.

[0094] Furthermore, the specific process of judging whether to send a cut-off prompt to the wellhead safety hydraulic cut-off device based on the pressure stability coefficient of the well opening control circuit is as follows: judging whether the pressure stability coefficient of the well opening control circuit meets the control circuit pressure stability condition; when the pressure stability coefficient of the well opening control circuit does not meet the control circuit pressure stability condition, sending a prompt to the preset personnel to re-optimize the oil well power transmission line, otherwise sending a prompt to adjust the downhole safety valve circuit pressure regulating valve; if the control circuit pressure stability condition is still not met after re-optimizing the oil well power transmission line, sending a cut-off prompt to the wellhead safety hydraulic cut-off device to automatically close the cut-off valve and cut off the wellhead gas source; the control circuit pressure stability condition indicates that the pilot supply circuit pressure stability coefficient is within the preset pilot supply circuit pressure stability range obtained from the database, and at the same time, the downhole booster pump post-pressure stability coefficient is within the preset downhole booster pump post-pressure stability range obtained from the database.

[0095] It should be added that the wellhead control cabinet is an important safety protection device at the well site. It monitors the transmission coefficient of the oil well power transmission line and the pressure stability coefficient of the well opening control circuit to automatically close the shut-off valve and cut off the wellhead gas source.

[0096] An embodiment of the present invention also provides an electronic device, which includes a memory for storing computer program instructions and a processor for executing the program instructions, wherein when the computer program instructions are executed by the processor, the electronic device is triggered to execute an intelligent control and management method for oil well production based on the Internet of Things.

[0097] In this embodiment, the preset pilot supply circuit pressure stability range and the preset downhole booster pump pressure stability range are set in advance by the preset personnel; the wellhead safety hydraulic cut-off device is an important safety protection equipment in the well site. When it is monitored that the pressure stability coefficient of the well opening control circuit does not meet the control circuit pressure stability condition, a cut-off prompt is sent to the wellhead safety hydraulic cut-off device to automatically close the cut-off valve and cut off the wellhead gas source. After receiving the cut-off prompt, the wellhead safety hydraulic cut-off device will automatically close the cut-off valve and cut off the wellhead gas source, thereby protecting the site equipment and preventing major accidents from occurring or spreading, which helps to improve the timeliness of the transmission optimization of the oil well power transmission line, thereby achieving an improvement in the accuracy of the circuit pressure monitoring data during the oil well safety production control process.

[0098] In summary, the embodiment of the present invention obtains the transmission coefficient of the oil well transmission line by performing a power transmission evaluation and determines whether to perform oil well transmission line optimization. If the oil well transmission line optimization is not performed, a power transmission optimization evaluation is performed to obtain the pressure stability coefficient of the well opening control loop, and based on the pressure stability coefficient of the well opening control loop, it is determined whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device, thereby achieving an improvement in the pressure stability of the well opening control loop, and further achieving an improvement in the accuracy of the loop pressure monitoring data during the oil well safety production control process, effectively solving the problem of low accuracy of the loop pressure monitoring data during the oil well safety production control process based on the Internet of Things in the prior art.

[0099] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0100] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts 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, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0101] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0102] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0103] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0104] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. An intelligent control and management method for oil well production based on the Internet of Things, characterized in that: The following steps are involved: S1, performing transmission evaluation based on the acquired oil well transmission line transmission stability data to obtain the oil well transmission line transmission coefficient, and determining whether to perform oil well transmission line transmission optimization based on the oil well transmission line transmission coefficient; S2: If the oil well power transmission line is not optimized, the transmission optimization evaluation is performed based on the acquired pressure stability data of the well opening control loop to obtain a pressure stability coefficient of the well opening control loop. The pressure stability coefficient of the well opening control loop is used to evaluate the pressure stability of the well opening control loop during the intelligent control of oil well production. S3, determining whether to send a cutoff prompt to a wellhead safety hydraulic cutoff device based on the pressure stability coefficient of the well opening control circuit, wherein the wellhead safety hydraulic cutoff device is used to perform oil well safety production control according to the received cutoff prompt; The oil well transmission line transmission coefficient is obtained by combining the oil well transmission line transmission stability data and the preset transmission influence weight group obtained from the database; The oil well power transmission line transmission stability data is obtained by processing the oil well power transmission line transmission parameters and the preset power transmission threshold and preset power transmission weight group obtained from the database; The specific process of determining whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device based on the pressure stability coefficient of the well opening control circuit is as follows: Determine whether the pressure stability coefficient of the well opening control loop meets the control loop pressure stability conditions; When the pressure stability coefficient of the well opening control circuit does not meet the control circuit pressure stability condition, a prompt is sent to the preset personnel to re-optimize the oil well power transmission line; otherwise, a prompt is sent to adjust the downhole safety valve circuit pressure regulating valve; If the control loop pressure stability condition is still not met after re-optimization of the oil well power transmission line, a cutoff prompt is sent to the wellhead safety hydraulic cutoff device to automatically close the cutoff valve and cut off the wellhead gas source; The oil well power transmission line transmission stability data is used to reflect the influence of the oil well power transmission line transmission parameters on the power transmission line transmission stability within a preset time period; The transmission parameters of the oil well power transmission line include the maximum power of the oil well power transmission line, the maximum voltage of the power transmission line, the maximum current of the power transmission line, the maximum impedance of the power transmission line, and the maximum corrosion current of the power transmission line.

2. The method for intelligent control and management of oil well production based on the Internet of Things according to claim 1 is characterized in that: The pressure stability data of the well opening control circuit includes the pressure data of the pilot supply circuit and the pressure data after the downhole booster pump; The pilot supply circuit pressure data is used to reflect the influence of the pilot supply circuit pressure parameter on the control stability of the pilot supply circuit pressure within a preset time period; The pilot supply circuit pressure parameters include the maximum pilot supply circuit pressure, the maximum control valve flow rate, the maximum fluid flow rate and the pipeline length; The downhole booster pump back pressure data is used to reflect the influence of the downhole booster pump back pressure parameters on the control stability of the downhole booster pump back pressure within a preset time period; The downhole booster pump back pressure parameters include the downhole booster pump back pressure maximum value, the fusible plug circuit pressure maximum value, the booster pump speed maximum value and the booster pump flow maximum value; The pressure stability coefficient of the well opening control circuit includes the pressure stability coefficient of the pilot supply circuit and the pressure stability coefficient after the downhole booster pump.

3. The method for intelligent control and management of oil well production based on the Internet of Things according to claim 2 is characterized in that: The specific steps for obtaining the stable data of the oil well power transmission line are as follows: Step 1: Obtaining an oil well power-voltage impact value by processing the maximum transmission power and voltage evaluation values, wherein the maximum transmission power and voltage evaluation values ​​include the maximum oil well transmission line power, the maximum transmission line voltage, a preset transmission line power maximum threshold, a preset transmission line voltage maximum threshold, and a preset transmission line voltage weight; Step 2: Obtaining an oil well power-current impact value by processing the maximum transmission power and current evaluation values, wherein the maximum transmission power and current evaluation values ​​include the maximum oil well transmission line power, the maximum transmission line current, a preset transmission line power maximum threshold, a preset transmission line current maximum threshold, and a preset transmission line current weight; Step 3: Obtaining an oil well power-impedance impact value by processing the transmission power and maximum impedance evaluation values, wherein the transmission power and maximum impedance evaluation values ​​include the maximum oil well transmission line power, the maximum transmission line corrosion current, a preset transmission line power maximum threshold, a preset corrosion current maximum threshold, and a preset corrosion current weight; Step 4: Obtain an oil well power-corrosion current impact value by processing the transmission power and maximum corrosion current evaluation values, wherein the transmission power and maximum corrosion current evaluation values ​​include the maximum oil well transmission line power, the maximum transmission line corrosion current, a preset transmission line power maximum threshold, a preset corrosion current maximum threshold, and a preset corrosion current weight; The oil well power transmission line transmission stability data includes the oil well power-voltage impact value, the oil well power-current impact value, the oil well power-impedance impact value and the oil well power-corrosion current impact value; The preset power transmission thresholds include a preset maximum power threshold of the power transmission line, a preset maximum voltage threshold of the power transmission line, a preset maximum current threshold of the power transmission line, a preset maximum impedance threshold of the power transmission line, and a preset maximum corrosion current threshold; The preset transmission weight group includes a preset transmission line voltage weight, a preset transmission line current weight, a preset transmission line impedance weight and a preset corrosion current weight; The preset power transmission impact weight group includes a first weight value for oil well power transmission, a second weight value for oil well power transmission, a third weight value for oil well power transmission, and a fourth weight value for oil well power transmission.

4. The method for intelligent control and management of oil well production based on the Internet of Things according to claim 3 is characterized in that: The restricted expression of the transmission coefficient of the oil well power transmission line is as follows: ； Where, Indicates in The transmission coefficient of the oil well transmission line within a preset time period, , Indicates the number of the preset time period, Indicates the total number of preset time periods, Indicates in The oil well power-voltage impact value within a preset time period, Indicates in The oil well power-current impact value within a preset time period, Indicates in The oil well power-impedance impact value within a preset time period, Indicates in Oil well power-corrosion current impact value within a preset time period, represents the first weight value of oil well power transmission, represents the second weight value of oil well power transmission, represents the third weight value of oil well power transmission, represents the fourth weight value of oil well power transmission, and e represents a natural constant.

5. The method for intelligent control and management of oil well production based on the Internet of Things according to claim 1, characterized in that: The specific process of determining whether to perform oil well transmission line transmission optimization based on the oil well transmission line transmission coefficient is as follows: Obtaining transmission comparison values ​​of oil well power transmission lines; When the obtained transmission comparison value of the oil well transmission line is not higher than 0, it indicates that the transmission stability of the oil well transmission line is qualified, and the transmission optimization of the oil well transmission line is not performed; On the contrary, it indicates that the transmission stability of the oil well transmission line is unqualified, and the oil well transmission line transmission optimization is carried out; The oil well power transmission line transmission comparison value is represented by the difference between the oil well power transmission line transmission coefficient and a preset power transmission impact threshold value obtained from a database.

6. The method for intelligent control and management of oil well production based on the Internet of Things according to claim 5, characterized in that: The specific process of oil well power transmission line optimization is as follows: Send reminders to preset personnel for cathodic protection and monitor the transmission coefficient of oil well transmission lines; When the transmission coefficient of the monitored oil well transmission line is not higher than the preset transmission impact threshold obtained from the database, the cathodic protection is stopped, otherwise the secondary cathodic optimization protection is carried out; Determine whether the transmission coefficient of the oil well transmission line after secondary cathode optimization protection is not higher than the preset transmission impact threshold. If so, stop the oil well transmission line transmission optimization. Otherwise, send an alarm prompt to the preset personnel.

7. The method for intelligent control and management of oil well production based on the Internet of Things according to claim 2, characterized in that: The specific process of obtaining the pilot supply circuit pressure stability coefficient is as follows: SS1, obtaining transmission and leading influence factors, wherein the transmission and leading influence factors are obtained by processing the leading influence assessment value; SS2, obtaining pilot pressure and flow impact values, wherein the pilot pressure and flow impact values ​​are obtained by processing the pilot and flow evaluation values; SS3, obtaining pilot pressure and loop influence values, wherein the pilot pressure and loop influence values ​​are obtained by processing the pilot and flow rate evaluation values; SS4, obtaining pilot pressure and length impact values, wherein the pilot pressure and length impact values ​​are obtained by processing the pilot and length evaluation values; SS5, combining the pilot supply circuit pressure data and a preset pilot supply circuit pressure weight group obtained from a database to obtain a pilot supply circuit pressure stability coefficient; The pilot impact assessment value includes a transmission optimization qualification factor, a pilot supply loop pressure maximum value, and a preset pilot supply loop pressure maximum threshold value and a preset pilot optimization weight obtained from a database; The pilot and flow evaluation values ​​include power transmission and pilot influence factors, maximum control valve flow rate, and a preset control valve flow rate maximum threshold and a preset control valve flow rate weight obtained from a database; The pilot and flow rate evaluation values ​​include power transmission and pilot influence factors, maximum fluid flow rate, and a preset maximum flow rate threshold and a preset flow rate weight obtained from a database; The leader and length evaluation values ​​include transmission and leader impact factors, pipeline length, and preset pipeline maximum thresholds and pipeline length weights obtained from a database; The pilot supply circuit pressure data includes a pilot pressure and flow influence value, a pilot pressure and circuit influence value, and a pilot pressure and length influence value; The transmission optimization qualification factor represents the transmission coefficient of the oil well transmission line that is not higher than the preset transmission impact threshold; The preset pilot supply circuit pressure weight group includes a preset pilot first weight value, a preset pilot second weight value and a preset pilot third weight value; The pilot supply circuit pressure stability coefficient is used to evaluate the control stability of the pilot supply circuit pressure during the intelligent control process of oil well production; The preset pilot optimization weight is used to reflect the influence of the power transmission optimization qualification factor and the maximum value of the pilot supply loop pressure on the power transmission and pilot influence factors within a preset time period.

8. The method for intelligent control and management of oil well production based on the Internet of Things according to claim 2, characterized in that: The specific process of obtaining the pressure stability coefficient after the downhole booster pump is as follows: The transmission and boosting impact factors are obtained by processing the boosting impact assessment values; The boost and fusible plug impact values ​​are obtained by processing the boost and fusible plug evaluation values; The boost pressure and speed impact values ​​are obtained by processing the boost pressure and speed evaluation values; The boost and flow impact values ​​are obtained by processing the boost and flow evaluation values; The downhole booster pump pressure stability coefficient is obtained by processing the downhole booster pump pressure data and the preset downhole booster pump pressure weight obtained from the database; The boosting impact assessment value includes a power transmission optimization qualification factor, a maximum downhole booster pump pressure, a preset downhole booster pump pressure maximum threshold value obtained from a database, and preset power transmission and boosting weights; The boost and fusible plug evaluation values ​​include power transmission and boost impact factors, the maximum value of the fusible plug circuit pressure, and a preset maximum threshold value of the fusible plug circuit pressure and a preset fusible plug circuit pressure weight obtained from a database; The boost and speed evaluation values ​​include power transmission and boost influencing factors, the maximum boost pump speed, and a preset maximum boost pump speed threshold and a preset boost pump speed weight obtained from a database; The boost and flow evaluation values ​​include power transmission and boost influencing factors, the maximum boost pump flow rate, and a preset boost pump flow rate maximum threshold and a preset boost pump flow rate weight obtained from a database; The downhole booster pump post-pressure data includes the boost and fusible plug influence value, the boost and speed influence value and the boost and flow influence value; The downhole booster pump pressure stability coefficient is used to evaluate the control stability of the downhole booster pump pressure during the intelligent control process of oil well production; The preset downhole booster pump pressure weight includes a preset downhole booster pump first weight value, a preset downhole booster pump second weight value and a preset downhole booster pump third weight value; The preset power transmission and pressure boosting weights are used to reflect the degree of influence of the power transmission optimization qualification factor and the maximum pressure after the downhole booster pump on the power transmission and pressure boosting influencing factor within a preset time period.

9. The method for intelligent control and management of oil well production based on the Internet of Things according to claim 1, characterized in that: The specific process of determining whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device based on the pressure stability coefficient of the well opening control circuit also includes: The control loop pressure stability condition indicates that the pilot supply loop pressure stability coefficient is within a preset pilot supply loop pressure stability range obtained from a database, and the downhole booster pump post-pressure stability coefficient is within a preset downhole booster pump post-pressure stability range obtained from a database.

10. An electronic device, characterized in that: The electronic device includes a memory for storing computer program instructions and a processor for executing program instructions, wherein, when the computer program instructions are executed by the processor, the electronic device is triggered to execute the intelligent control and management method for oil well production based on the Internet of Things as described in any one of claims 1 to 9.

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