Oil well production intelligent control management method and equipment based on Internet of Things

Abstract

The invention discloses an oil well production intelligent control management method and equipment based on the Internet of Things, and relates to the technical field of oil well production control. The oil well production intelligent control management method based on the Internet of Things comprises the following steps: power transmission evaluation; power transmission optimization evaluation; and safely cutting off. According to the method, the oil well power transmission line transmission coefficient is obtained through power transmission evaluation, whether oil well power transmission line transmission optimization is carried out or not is judged, and if not, power transmission optimization evaluation is carried out to obtain the well opening control loop pressure stability coefficient; whether a cut-off prompt is sent to a wellhead safety hydraulic cut-off device or not is judged based on the well opening control loop pressure stability coefficient, and the effect of improving the accuracy of loop pressure monitoring data in the oil well safety production control process is achieved; the problem that the accuracy of loop pressure monitoring data is not high in the oil well safety production control process based on the Internet of Things in the prior art is solved.

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 items in the physical world through the network to achieve information exchange and intelligent management. With the continuous development of IoT technology, oil well production management has begun to move towards intelligence. The IoT-based intelligent control and management method for oil well production can achieve real-time collection and monitoring of oil well production data by deploying various sensors and intelligent devices. At the same time, advanced technologies such as cloud computing, big data, and artificial intelligence are used to analyze and process the collected data to provide a scientific basis for production decisions.

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

[0004] For example, the safety production management system and method based on the industrial Internet announced by the invention patent with announcement number CN117389217B includes: accurately obtaining the temperature, vibration and other data of the drill bit and drill pipe through real-time monitoring and data analysis. For real-time monitoring of temperature changes at the connection between the drill bit and the drill pipe, the digital twin model cooperates with the industrial Internet for analysis and prediction. By deploying sensors and collecting real-time data, the system can continuously monitor the key parameters of the drilling site, oil well drilling equipment and storage tanks. Once the data exceeds the preset safety threshold coefficient, the system will immediately trigger an early warning, allowing operators to take timely measures to prevent potential dangerous 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 according to 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: In the prior art, since a large amount of metal ions, electrolytes and other interfering substances may exist in a corrosive environment, these substances may interfere with the voltage stability of the transmission line and further 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

[0007] 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 improvement in the accuracy of loop pressure monitoring data in the process of oil well production safety control.

[0008] The present invention provides an intelligent control management method for oil well production based on the Internet of Things, comprising the following steps: 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 optimization; S2, if the oil well power transmission line 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, and the well opening control loop pressure stability coefficient is 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, and the wellhead safety hydraulic cutoff device is used to perform oil well safety production control according to the received cutoff prompt.

[0009] Furthermore, the transmission stability data of the oil well power transmission line is used to reflect the influence of the transmission parameters of the oil well power transmission line on the transmission stability of the power transmission line 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; the pressure stability data of the well opening control loop includes the pressure data of the pilot supply loop and the pressure data after the downhole booster pump; the pressure data of the pilot supply loop is used to reflect the influence of the pressure parameters of the pilot supply loop 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.

[0010] 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 influence value by processing the maximum evaluation value of the transmission power and voltage, the maximum evaluation value of the transmission power and voltage includes the maximum value of the oil well transmission line power, the maximum value of the transmission line voltage The maximum value, the preset maximum threshold value of the transmission line power, the preset maximum threshold value of the transmission line voltage and the preset transmission line voltage weight; Step 2, the oil well power-current impact value is obtained by processing the maximum evaluation value of the transmission power and the current, and the maximum evaluation value of the transmission power and the current includes the maximum value of the oil well transmission line power, the maximum value of the transmission line current, the preset maximum threshold value of the transmission line power, the preset maximum threshold value of the transmission line current and the preset transmission line current weight; Step 3, the oil well power-impedance impact value is obtained by processing the maximum evaluation value of the transmission power and the impedance, and the maximum evaluation value of the transmission power and the impedance 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 transmission power and the maximum corrosion current evaluation value to obtain the oil well power-corrosion current impact value, the transmission power and the maximum corrosion current evaluation value include 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 threshold value includes a preset maximum transmission line power threshold, a preset maximum transmission line voltage threshold, a preset maximum transmission line current threshold, a preset maximum transmission line impedance threshold 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 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.

[0011] Furthermore, the restricted expression of the transmission coefficient of the oil well power transmission line is as follows: ; In the formula, Indicated in The transmission coefficient of the oil well power transmission line within a preset time period, , Indicates the number of the preset time period, Indicates the total number of preset time periods. Indicated in The oil well power-voltage impact value within a preset time period, Indicated in The oil well power-current impact value within a preset time period, Indicated in The oil well power-impedance impact value within a preset time period, Indicated 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.

[0012] Furthermore, the specific process of judging whether to perform oil well power transmission line transmission optimization based on the oil well power transmission line transmission coefficient is as follows: obtaining an oil well power transmission line transmission comparison value; when the obtained oil well power transmission line transmission comparison value is not higher than 0, it indicates that the oil well power transmission line transmission stability is qualified and the oil well power transmission line transmission optimization is not performed; otherwise, it indicates that the oil well power transmission line transmission stability is unqualified and the oil well power transmission line transmission optimization is performed; 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 influence threshold value obtained from a database.

[0013] Furthermore, the specific process of the oil well power transmission line transmission optimization is as follows: sending a prompt to the preset personnel to perform cathodic protection, and monitoring the transmission coefficient of the oil well power transmission line at the same time; when the monitored oil well power transmission line transmission coefficient is not higher than the preset power 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 power transmission line after the secondary cathodic optimization protection is not higher than the preset power transmission impact threshold, if so, stopping the oil well power transmission line transmission optimization, otherwise sending an alarm prompt to the preset personnel.

[0014] Furthermore, the specific acquisition process of the pilot supply loop pressure stability coefficient is as follows: SS1, obtain power transmission and pilot influence factors, the power transmission and pilot influence factors are obtained by processing the pilot influence evaluation value; SS2, obtain pilot pressure and flow influence values, the pilot pressure and flow influence values ​​are obtained by processing the pilot and flow evaluation values; SS3, obtain pilot pressure and loop influence values, the pilot pressure and loop influence values ​​are obtained by processing the pilot and flow rate evaluation values; SS4, obtain pilot pressure and length influence values, the pilot pressure and length influence values ​​are obtained by processing the pilot and length evaluation values; 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 qualified factor, the maximum value of the pilot supply loop pressure, 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 maximum value of the control valve flow, and the preset pilot optimization weight obtained from the database The preset control valve flow maximum threshold and the preset control valve flow weight; the pilot and flow rate evaluation value includes power transmission and pilot influence factors, the maximum value of 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 power transmission and pilot influence factors, 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 qualified factor represents the oil well power transmission line transmission coefficient not higher than the preset power transmission transmission influence threshold; the preset pilot supply loop pressure weight group includes the preset pilot first weight value, the preset pilot second weight value, and the 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 in the process of intelligent control of oil well production; the preset pilot optimization weight is used to reflect the influence of the power transmission optimization qualified factor and the maximum value of the pilot supply loop pressure on the power transmission and pilot influence factor within the preset time period.

[0015] 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 influence value is obtained by processing the boosting and fusible plug evaluation value; the boosting and speed influence value is obtained by processing the boosting and speed evaluation value; the boosting and flow 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 qualified 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 value of the boost pump speed, and the preset maximum boost pump speed threshold and the 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 value of the boost pump flow, and the preset maximum boost pump flow threshold and the preset boost pump flow weight obtained from the database; the downhole boost pump back 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 back pressure stability coefficient is used to evaluate the control stability of the downhole boost pump back pressure during the intelligent control process of oil well production; the preset downhole boost pump back pressure weight includes the preset downhole boost pump back first weight value, the preset downhole boost pump back second weight value and the preset downhole boost pump back third weight value; the preset power transmission and boost weight is used to reflect the influence of the power transmission optimization qualified factor and the downhole boost pump back pressure maximum value on the power transmission and boost influence factor within the preset time period.

[0016] 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 transmission, 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 transmission, 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.

[0017] The present invention also provides an electronic device, comprising 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 the intelligent control management method for oil well production based on the Internet of Things.

[0018] One or more technical solutions provided by the present invention have at least the following technical effects or advantages: 1. The transmission coefficient of the oil well transmission line is obtained by performing a power transmission evaluation and it is determined whether to optimize the oil well transmission line. If the oil well transmission line is not optimized, 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 improving the pressure stability of the well opening control loop, and further improving 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.

[0019] 2. The transmission coefficient of the oil well power transmission line is obtained by combining the transmission stability data of the oil well power 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.

[0020] 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, otherwise the secondary cathodic optimization protection is performed, thereby realizing the dynamic optimization of the transmission reliability of the oil well transmission line, and then realizing the improvement of the accuracy of the transmission optimization of the oil well transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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; Figure 2 A statistical diagram of changes in the pressure stability coefficient after the downhole booster pump, showing the pressure boost and flow rate impact values ​​provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The embodiment of 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. The transmission coefficient of the oil well transmission line is obtained by performing transmission transmission evaluation based on the transmission stability data of the oil well transmission line, and then judging whether to perform oil well transmission line optimization based on the transmission coefficient of the oil well transmission line. If the oil well transmission line optimization is not performed, the transmission optimization evaluation is performed based on the obtained well opening control loop pressure stability data to obtain the well opening control loop pressure stability coefficient. Finally, judging whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device based on the well opening control loop pressure stability coefficient, thereby improving the accuracy of loop pressure monitoring data in the process of oil well production safety control.

[0023] 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 safety production control based on the Internet of Things. The overall idea is as follows: 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, 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 the effect of improving the accuracy of the loop pressure monitoring data in the oil well safety production control process.

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] like Figure 1 As shown, it is a flow chart of an intelligent control management method for oil well production based on the Internet of Things provided by an embodiment of the present invention, and 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 judged 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, the power transmission optimization evaluation is performed through the acquired well opening control loop pressure stability data to obtain the well opening control loop pressure stability coefficient, and the well opening control loop pressure stability coefficient 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 judged whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device, the wellhead safety hydraulic cutoff device is a safety protection device, which can automatically close the cutoff valve and cut off the wellhead gas source, and the wellhead safety hydraulic cutoff device is used to perform oil well safety production control according to the received cutoff prompt.

[0026] 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 transmission coefficient of the monitored oil well power transmission line is higher than the preset power transmission impact threshold, it indicates that the oil well power transmission line transmission is qualified and the power transmission optimization evaluation 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 power transmission line is higher than the preset power transmission impact threshold, it may cause control signal distortion and thus cause inaccurate monitoring of the pressure stability coefficient of the well opening control loop, thereby affecting the transmission performance of the transmission line and the control effect of the downhole booster pump. The transmission coefficient of the oil well power transmission line, the pressure stability coefficient of the pilot supply loop and the pressure stability coefficient after the downhole booster pump are monitored through the Internet of Things technology and monitoring devices (such as power meters, voltmeters, ammeters, line impedance testers, pressure sensors, etc.), and the corresponding prompt information is sent to the preset personnel at the same time, to realize real-time monitoring, intelligent analysis and remote control of the transmission stability data of the oil well power transmission line and the pressure stability data of the well opening control loop, thereby realizing the improvement of the accuracy of the loop pressure monitoring data in the process of oil well safety production control.

[0027] It should be added that the transmission stability data of the oil well transmission line and the pressure stability data of the well opening control loop are not 0; the transmission stability data of the oil well transmission line is used to reflect the influence of the transmission parameters of the oil well transmission line on the transmission stability of the transmission line within a preset time period; the transmission parameters of the oil well transmission line include the maximum power of the oil well transmission line, the maximum voltage of the transmission line, the maximum current of the transmission line, the maximum impedance of the transmission line and the maximum corrosion current of the transmission line.

[0028] 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.

[0029] 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 a preset time period.

[0030] During the preset optimization qualified time period, the pressure value at 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 control valve flow; 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.

[0031] 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.

[0032] 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 downhole booster pump at the preset position point 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.

[0033] The pressure stability data of the well opening control circuit includes the pilot supply circuit pressure data and the downhole booster pump back pressure data; the maximum control valve flow rate indicates the maximum value of the hydraulic oil flow through the control valve within a preset time period; the maximum fluid flow rate indicates the maximum value of the hydraulic oil flow rate in the hydraulic pipeline within a preset time period; the maximum booster pump flow rate indicates the maximum value of the hydraulic oil flow through the booster pump within a preset time period.

[0034] 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 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 the current, and the maximum evaluation value of the transmission power and the 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 the impedance, 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 transmission power and corrosion current, and the maximum evaluation value of transmission 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, ... The preset transmission thresholds include the preset maximum transmission line power threshold, the preset maximum transmission line voltage threshold, the preset maximum transmission line current threshold, the preset maximum transmission line impedance threshold and the preset maximum corrosion current 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 influence 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.

[0035] The preset transmission line voltage weight is used to reflect the influence of the maximum power and the 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 the 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 the 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 the 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.

[0036] Among them, the restricted expression of the transmission coefficient of the oil well transmission line is as follows: ; ; ; ; ; In the formula, Indicated in The transmission coefficient of the oil well power transmission line within a preset time period, , Indicates the number of the preset time period, Indicates the total number of preset time periods. Indicated in The oil well power-voltage impact value within a preset time period, Indicated in The oil well power-current impact value within a preset time period, Indicated in The oil well power-impedance impact value within a preset time period, Indicated 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.

[0037] Indicated in The maximum power of the oil well transmission line within a preset time period, Indicated in The maximum value of the transmission line voltage within a preset time period, Indicated in The maximum current of the transmission line within a preset time period, Indicated in The maximum impedance of the transmission line within a preset time period, Indicated 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 of transmission line voltage, Indicates the maximum threshold value of the preset 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. Among them, the maximum value of the oil well transmission line power and the preset maximum power threshold of the transmission line have the same unit, both are watts; the maximum value of the transmission line voltage and the preset maximum voltage threshold of the transmission line have the same unit, both are volts; the maximum value of the transmission line current, the maximum value of the transmission line corrosion current, the preset maximum current threshold of the transmission line, and the preset maximum corrosion current threshold have the same unit, all are amperes; the maximum value of the transmission line impedance and the preset maximum impedance threshold of the transmission line have the same unit, both are ohms.

[0038] In this embodiment, the aforementioned database is a database for storing various types of setting data in the intelligent control 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.

[0039] It should be explained that the present 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 the present embodiment, the weight value range is 0-1.

[0040] A mapping group reflecting the mapping relationship 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 the corresponding preset transmission weight group 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 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.

[0041] The algorithm of this embodiment combines the oil well transmission line transmission stability data analysis to obtain the oil well transmission line transmission coefficient. The larger the oil well transmission line transmission stability data, the greater the interference degree of the maximum oil well transmission line power and the maximum transmission line voltage, the maximum oil well transmission line power and the maximum transmission line current, the maximum oil well transmission line power and the maximum transmission line impedance, the maximum oil well transmission line power and the maximum transmission line corrosion current on the oil well transmission line transmission stability, resulting in a decrease in the oil well transmission line transmission coefficient. In summary, the oil well transmission line transmission stability data is inversely proportional to the oil well transmission line transmission coefficient.

[0042] In the algorithm of this embodiment, the transmission stability data of the oil well power transmission line does not exist independently, and the variables are interrelated, which requires comprehensive analysis. The maximum power of the oil well power transmission line may be affected by the maximum voltage of the transmission line and the maximum current of the transmission line. When the maximum voltage of the transmission line and the maximum current of the transmission line 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 of the current of the transmission line, and the greater 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 greater the maximum corrosion current of the transmission line, the greater the degree of corrosion of the transmission line, which limits the increase of 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 between the parameters, the accurate evaluation of the transmission stability of the transmission line in the process of intelligent control of oil well production is realized, thereby improving the accuracy of the loop pressure monitoring data in the process of safe production control of oil wells.

[0043] 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 influence 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 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: Table 1 Statistics of changes in transmission coefficient of oil well power transmission lines

[0044] From the above table, we can see that as the oil well power-voltage influence value , Oil well power-current impact value , Oil well power-impedance impact value and oil well power-corrosion current impact value The transmission coefficient of oil well power transmission line increases gradually. The gradual decrease means that the transmission stability of the power transmission line in the process of intelligent control of oil well production is gradually reduced.

[0045] Furthermore, the specific process of judging whether to perform oil well transmission line transmission optimization based on the oil well transmission line transmission coefficient is as follows: obtaining the 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 the oil well transmission line transmission optimization is not performed; otherwise, it indicates that the oil well transmission line transmission stability is unqualified and the 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 the preset transmission influence threshold value obtained from the database.

[0046] 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.

[0047] 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 receive 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, so that the oil well transmission line to be protected is used 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 loop pressure monitoring data during oil well production safety control.

[0048] 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 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, 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 value of the pilot supply loop pressure, and the preset maximum threshold of the pilot supply loop pressure 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 value of the control valve flow, and the preset maximum control valve flow 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 value of the fluid flow rate, and the preset maximum flow rate 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 maximum pipeline threshold and pipeline length obtained from the database Weight; pilot supply loop pressure data includes pilot pressure and flow rate influence value, pilot pressure and loop influence value and pilot pressure and length influence value; well opening control loop pressure stability coefficient includes pilot supply loop pressure stability coefficient and downhole booster pump back pressure stability coefficient; power transmission optimization qualification factor represents oil well power transmission line transmission coefficient not higher than preset power transmission influence threshold; preset pilot supply loop pressure weight group includes preset pilot first weight value, preset pilot second weight value and preset pilot third weight value; preset pilot supply loop pressure weight group is used to reflect the influence of pilot supply loop pressure data on pilot supply loop pressure stability coefficient within preset time period; pilot supply loop pressure stability coefficient Used to evaluate the control stability of the pilot supply loop pressure in 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.

[0049] Among them, the pilot supply circuit pressure stability coefficient is obtained by the following method: ; ; ; ; ; In the formula, Indicated 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. Indicated in The pilot pressure and flow impact values ​​of the preset optimization qualified time period, Indicated in The pilot pressure and circuit influence value of the preset optimization qualified time period, Indicated 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 second weight value of the leader, represents the preset leading third weight value, and e represents a natural constant.

[0050] Indicated in The maximum value of the pilot supply circuit pressure during a preset optimization qualified time period, Indicated in transmission and pilot influencing factors for the preset optimization qualified time period, Indicated in The maximum value of the control valve flow rate during the preset optimization qualified time period, Indicated in The maximum value of the fluid flow rate during the preset optimization qualified time period, Indicated in The pipeline length of the preset optimization qualified time period, Indicated in The transmission optimization qualification factor for a preset optimization qualification time period, Indicates the preset maximum threshold of pilot supply circuit pressure. Indicates the preset maximum flow threshold of the control valve. Indicates the preset maximum flow rate threshold. Indicates the preset maximum pipeline threshold. Indicates the preset control valve flow weight, Indicates the preset flow rate weight, represents the pipe length weight, Represents the preset leader optimization weight.

[0051] In this embodiment, the preset pilot supply circuit pressure maximum threshold is represented by the maximum value of the pilot supply circuit pressure in the historical time period, the preset control valve flow maximum threshold is represented by the maximum value of the control valve flow in the historical time period, the preset flow rate maximum threshold is represented by the maximum value of the hydraulic oil flow rate corresponding to the pilot supply circuit in the historical time period, and the preset pipeline maximum threshold is represented by the maximum value of the hydraulic pipeline length in the historical time period. The units of the pilot supply circuit pressure maximum value and the preset pilot supply circuit pressure maximum threshold are both megapascals; the control valve flow maximum value and the preset control valve flow maximum threshold are both cubic meters per second; the fluid flow rate maximum value and the preset flow rate maximum threshold are both meters per second; the pipeline length and the preset pipeline maximum threshold are both meters.

[0052] It needs to 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.

[0053] 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; the corresponding preset control valve flow weight, preset flow rate weight, and pipeline length weight are obtained 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 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.

[0054] 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, and 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 weight value range is 0-1.

[0055] The algorithm of this embodiment combines the pilot supply circuit pressure data analysis to obtain the pilot supply circuit pressure stability coefficient. The larger the pilot supply circuit pressure data, the greater the interference of the pilot and flow evaluation value, the pilot and flow velocity evaluation value and the pilot and length evaluation value on the control stability of the pilot supply circuit pressure, resulting in a decrease in the pilot supply circuit pressure stability coefficient. In summary, the pilot supply circuit pressure data is inversely proportional to the pilot supply circuit pressure stability coefficient.

[0056] In the algorithm of this embodiment, the pilot supply circuit pressure data does not exist independently, and each variable is interrelated, which requires comprehensive analysis. The change of the maximum value of the pilot supply circuit pressure may affect the flow 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 may be limited. When the maximum value of the control valve flow is larger, it may cause the hydraulic pipeline to produce greater resistance, which may lead to a decrease in the maximum value of the fluid flow rate; the change of the pipeline length will also affect the flow rate of the fluid. When the maximum value of the control valve flow remains unchanged, the longer the pipeline length, the longer the hydraulic oil takes 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 influence between the parameters, the accurate evaluation 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 in the safe production control process of oil wells.

[0057] Furthermore, the specific process of obtaining the downhole booster pump back 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 back pressure stability coefficient is obtained by processing the downhole booster pump back pressure data and the preset downhole booster pump back pressure weight obtained from the database; the boosting influence evaluation value includes the power transmission optimization qualified factor, the downhole booster pump back pressure ... 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 booster pump flow obtained from the database Maximum threshold and preset booster pump flow weight; downhole booster pump post-pressure data include boost and fusible plug influence value, boost and speed influence value and boost 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 boost weight is used to reflect the influence of power transmission optimization qualified factor and downhole booster pump post-pressure maximum value on power transmission and boost influence factor within the 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 within a preset time period on the downhole booster pump post-pressure stability coefficient; the preset fusible plug circuit pressure weight is used to reflect the influence of the power transmission and boosting influencing factors 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 influence of the power transmission and boosting influencing factors and the maximum value of the booster pump speed on the boosting and speed influence values ​​within the preset time period; the preset booster pump flow weight is used to reflect the influence of the power transmission and boosting influencing factors and the maximum value of the booster pump flow on the boosting and flow influence values ​​within the preset time period.

[0058] Among them, the pressure stability coefficient after the downhole booster pump is obtained by the following method: ; ; ; ; ; In the formula, Indicated in The pressure stability coefficient after the downhole booster pump for 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. Indicated in The boost and fusible plug impact values ​​for a preset optimization qualified time period, Indicated in The boost and speed impact values ​​of the preset optimization qualified time period, Indicated in The boost and flow impact values ​​of the preset optimization qualified time period, Indicates the preset first weight value of the leader, Indicates the preset second weight value of the leader, represents the preset leading third weight value, and e represents a natural constant.

[0059] Indicated in The maximum pressure after the downhole booster pump in a preset optimized qualified time period, Indicated in The transmission and boosting influencing factors of the preset optimization qualified time period, Indicated in The maximum value of the fusible plug circuit pressure during a preset optimization qualified time period, Indicated in The maximum value of the booster pump speed during the preset optimization qualified time period, Indicated in The maximum value of the booster pump flow rate during the preset optimization qualified time period, Indicated in The transmission optimization qualification factor for a preset optimization qualification time period, Indicates the maximum pressure threshold after the downhole booster pump is preset. Preset the maximum threshold of fusible plug circuit pressure, Indicates the preset maximum threshold of boost pump speed. Indicates the preset maximum flow threshold of the booster pump. 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.

[0060] In this embodiment, the preset maximum threshold of the downhole booster pump back pressure is represented by the maximum value of the downhole booster pump back pressure in the historical time period, the preset maximum threshold of the fusible plug circuit pressure is represented by the maximum value of the fusible plug circuit pressure in the historical time period, the preset maximum threshold of the booster pump speed is represented by the maximum value of the booster pump speed in the historical time period, and the preset maximum threshold of the booster pump flow rate is represented by the maximum value of the booster pump flow rate in the historical time period. The units of the maximum value of the downhole booster pump back pressure, the maximum value of the fusible plug circuit pressure, the preset maximum threshold of the downhole booster pump back pressure, and the preset maximum threshold of the fusible plug circuit pressure are all in megapascals; the units of the maximum value of the booster pump speed and the preset maximum threshold of the booster pump speed are both revolutions per minute; the units of the maximum value of the booster pump flow rate and the preset maximum threshold of the booster pump flow rate are both in cubic meters per second.

[0061] 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, and 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.

[0062] A mapping group reflecting the mapping relationship 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 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.

[0063] 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, and 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 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.

[0064] The algorithm of this embodiment combines the downhole booster pump back pressure data analysis to obtain the downhole booster pump back pressure stability coefficient. The larger the downhole booster pump back pressure data, the greater the interference degree of boost and fusible plug evaluation value, boost and speed evaluation value, and boost and flow evaluation value on the downhole booster pump back pressure stability, resulting in a decrease in the downhole booster pump back pressure stability coefficient. In summary, the downhole booster pump back pressure data is inversely proportional to the downhole booster pump back pressure stability coefficient.

[0065] In the algorithm of this embodiment, the pressure data after the downhole booster pump does not exist independently, and the variables are interrelated and need to be comprehensively analyzed. The greater the maximum value of the booster pump speed, the more energy consumption the pump may consume, which in turn leads to a corresponding increase in the maximum value of the downhole booster pump pressure; the greater the maximum value of the fusible plug loop pressure, the more likely it is that the fusible plug will melt, thereby releasing pressure and reducing the maximum value of the downhole booster pump pressure; the greater the maximum value of the booster pump flow, the greater the maximum value of the downhole booster pump pressure due to factors such as increased pipeline resistance and internal leakage of the pump; by analyzing the comprehensive impact between 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 loop pressure monitoring data during the safe production control of oil wells.

[0066] 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 the third weight value of the leader They are fixed at 0.3, 0.3, and 0.4 respectively, such as Figure 2 As shown in FIG. 1 , a statistical diagram of the pressure stability coefficient after the downhole booster pump provided by the embodiment of the present invention is shown. 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.

[0067] 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 transmission, 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 transmission, 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.

[0068] 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 loop to automatically close the shut-off valve and cut off the wellhead gas source.

[0069] 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 management method for oil well production based on the Internet of Things.

[0070] In this embodiment, the preset pilot supply circuit pressure stability range and the preset downhole booster pump rear 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 optimization of the oil well power transmission line transmission, thereby achieving an improvement in the accuracy of the circuit pressure monitoring data during the oil well safety production control process.

[0071] To summarize, the embodiment of the present invention obtains the transmission coefficient of the oil well power transmission line by performing power transmission evaluation and determines 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, 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 in the oil well safety production control process, effectively solving the problem of low accuracy of the loop pressure monitoring data in the oil well safety production control process based on the Internet of Things in the prior art.

[0072] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. 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 disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0073] 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 flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. 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.

[0074] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate 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 A function specified in one or more boxes.

[0075] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0076] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other 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.

[0077] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

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, based on the acquired oil well power transmission line transmission stability data, a power transmission evaluation is performed to obtain a power transmission coefficient of the oil well power transmission line, and based on the power transmission coefficient of the oil well power transmission line, it is determined whether to perform power transmission optimization of the oil well power transmission line; S2, if the oil well power transmission line is not optimized, the transmission optimization evaluation is performed through 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 oil well production intelligent control process; S3, judging whether to send a cutoff prompt to the wellhead safety hydraulic cutoff device based on the pressure stability coefficient of the well opening control loop, wherein the wellhead safety hydraulic cutoff device is used to perform safe production control of the oil well according to the received cutoff prompt.

2. According to the method for intelligent control and management of oil well production based on Internet of Things in claim 1, it is characterized in that: 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 transmission stability of the power transmission line 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; The well opening control circuit pressure stability data includes pilot supply circuit pressure data and downhole booster pump back pressure data; 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 intelligent control and management method for oil well production based on the Internet of Things according to claim 2 is characterized in that: The oil well transmission line transmission coefficient is obtained by combining the oil well transmission line transmission stability data and a preset transmission influence weight group obtained from a 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 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, the preset transmission line power maximum threshold, the preset transmission line voltage maximum threshold, and the preset transmission line voltage weight; Step 2: obtaining the oil well power-current impact value by processing the maximum transmission power and current evaluation values, wherein the transmission power and current maximum evaluation values ​​include 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 three, obtaining the oil well power-impedance impact value by processing the transmission power and the maximum impedance evaluation value, wherein the transmission power and the maximum impedance evaluation value include the maximum power of the oil well transmission line, the maximum corrosion current of the transmission line, the preset maximum transmission line power threshold, the preset maximum corrosion current threshold and the preset corrosion current weight; Step 4: obtaining the oil well power-corrosion current impact value by processing the transmission power and the maximum corrosion current evaluation value, wherein the transmission power and the maximum corrosion current evaluation value include the maximum power of the oil well transmission line, the maximum corrosion current of the transmission line, the preset maximum transmission line power threshold, the preset maximum corrosion current threshold and the preset corrosion current weight; The oil well power transmission line transmission stability data includes 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 preset power transmission thresholds include a preset power transmission line maximum threshold, a preset power transmission line voltage maximum threshold, a preset power transmission line current maximum threshold, a preset power transmission line impedance maximum threshold, and a preset corrosion current maximum 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 intelligent control and management method for oil well production based on the Internet of Things according to claim 3 is characterized in that: The restriction expression of the transmission coefficient of the oil well power transmission line is as follows: ； In the formula, Indicated in The transmission coefficient of the oil well power transmission line within a preset time period, , Indicates the number of the preset time period, Indicates the total number of preset time periods. Indicated in The oil well power-voltage impact value within a preset time period, Indicated in The oil well power-current impact value within a preset time period, Indicated in The oil well power-impedance impact value within a preset time period, Indicated 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 intelligent control and management method for oil well production based on the Internet of Things according to claim 1 is 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 power transmission line is unqualified, and the oil well power 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 influence threshold value obtained from a database.

6. The method for intelligent control and management of oil well production based on Internet of Things according to claim 5 is characterized in that: The specific process of the oil well power transmission line transmission optimization is as follows: Send reminders to preset personnel for cathodic protection while monitoring 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 the 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 intelligent control and management method for oil well production based on the Internet of Things according to claim 2 is 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 a pilot pressure and a loop influence value, wherein the pilot pressure and the loop influence value are obtained by processing the pilot and flow rate evaluation values; SS4, obtaining pilot pressure and length influence values, wherein the pilot pressure and length influence values ​​are obtained by processing the pilot and length evaluation values; SS5, combining the pilot supply loop pressure data and a preset pilot supply loop pressure weight group obtained from a database to obtain a pilot supply loop 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, the maximum value of the control valve flow, and the preset control valve flow maximum threshold and preset control valve flow weight obtained from the 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 influence factors, pipeline length, and preset pipeline maximum threshold and pipeline length weight 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 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 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 value of the pilot supply loop pressure on the power transmission and pilot influencing factors within a preset time period.

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

9. The intelligent control and management method for oil well production based on the Internet of Things according to claim 1 is characterized in that: 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: Determine whether the pressure stability coefficient of the well opening control loop meets the pressure stability condition of the control loop; When the pressure stability coefficient of the well opening control loop does not meet the pressure stability condition of the control loop, a prompt is sent to the preset personnel to re-optimize the transmission of the oil well power transmission line. Otherwise, a prompt is sent to adjust the downhole safety valve loop 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 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; 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 1-9.

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