CN-122018376-A - Closed loop linkage control system and control method for upstream and downstream well stations

CN122018376ACN 122018376 ACN122018376 ACN 122018376ACN-122018376-A

Abstract

The invention relates to the field of well station control systems, in particular to an upstream and downstream well station closed-loop linkage control system and a control method; technical problems: the control system of the upstream and downstream well stations in the prior art lacks of intelligent equipment and comprehensive application of an automation technology, so that the system cannot realize automatic control on part of links, and the operation parameters are often monitored in a manual inspection or timing sampling mode, so that the response speed to the change of the operation conditions is slower, and the linkage control among links is difficult to realize; the technical scheme is as follows: the system comprises a data acquisition module, a data analysis module, a process adjustment module and a feedback module; the invention forms a closed-loop control system through links such as real-time data acquisition, deviation detection, control decision and feedback execution, and the like, and adopts a closed-loop linkage control real-time data acquisition and quick response mechanism, so that the system deviation can be found and processed in time, and the stable operation of the system in a preset target range is ensured.

Inventors

GAO LEI
XU ZIQIANG
LIU HAO
WANG LINPING
XU BIN
SHAN JIQUAN
HE ZHANYOU
ZHANG RUI
REN YANBING
Chai rui
REN XIAORONG
XU WENLONG

Assignees

中国石油天然气股份有限公司

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (10)

1. The closed loop linkage control system of the upstream and downstream well stations is characterized by comprising the following components: the data acquisition module is used for acquiring various operation parameters of the well station in real time by adopting a plurality of groups of sensing equipment and transmitting the operation parameters to the data analysis module; the data analysis module is used for comparing and analyzing the acquired actual operation parameters with a preset expected value or a safety threshold value and detecting whether deviation exists or not; The process adjustment module is used for calculating the control quantity by adopting an intelligent algorithm according to the size and the property of the deviation, sending a control instruction to a corresponding executing mechanism through a communication network, and adjusting the process parameter or the equipment state by the executing mechanism according to the control instruction so as to eliminate the deviation; and the feedback module is used for comparing the adjusted operation parameters and equipment state information of the well station with expected values again, and is linked with the process adjustment module to carry out repeated adjustment aiming at existing deviation so as to establish a closed loop feedback mechanism.
2. The closed loop linkage control system of the upstream and downstream well stations is characterized in that the data acquisition module comprises digital skid-mounted equipment, a patrol robot, a patrol unmanned aerial vehicle and a dynamic equipment state monitoring sensor, the digital skid-mounted equipment is used for acquiring the running state, the technological parameters and the fault information of the equipment in real time through a built-in PLC control system, the patrol robot is used for conducting equipment patrol along a preset track or an autonomous path, the patrol unmanned aerial vehicle is used for conducting patrol on a critical area in the air, the patrol robot and the patrol unmanned aerial vehicle are both provided with sensors such as a high-definition camera and an infrared thermal imager, data such as appearance, temperature and vibration of the equipment are acquired, the dynamic equipment state monitoring sensor is used for being installed on key dynamic equipment, the running state and the performance parameters of the equipment are monitored in real time, and the data are transmitted to a central control room for centralized processing.
3. The system of claim 2, wherein the data analysis module is configured to receive the data collected by the data collection module in real time, process and analyze the collected data by using a control algorithm and a data analysis technique, compare the collected actual operating parameter with a preset expected value or a safety threshold, detect whether a deviation exists, and enter the process adjustment module to perform a control operation if the deviation exists.
4. The system of claim 3, wherein the data analysis module, when in operation, comprises the steps of: S101, receiving data parameters collected by field devices such as digital skid-mounted equipment, inspection robots, inspection unmanned aerial vehicles and the like in a wireless transmission mode, wherein the data parameters comprise key operation parameters such as pressure, temperature, flow, vibration, rotating speed and the like, and equipment state information; S102, removing invalid data such as noise and abnormal values in the data, converting the data from different sources into a uniform format, and carrying out standardized processing on the data according to the requirements so as to eliminate the influence of dimension differences on analysis results; s103, determining expected values by adopting a statistical analysis method according to factors such as production process requirements, equipment performance parameters, historical operation data and the like, and comprehensively determining the expected values of all operation parameters; s104, setting upper and lower threshold values by adopting fixed values, percentages and dynamic adjustment modes according to factors such as system characteristics, safety requirements, economic benefits and the like; s105, comparing the preprocessed actual operation parameters with preset expected values in a one-to-one correspondence manner to obtain deviation values of each parameter, wherein the deviation values can be differences or relative values between the actual values and the expected values; S106, calculating the deviation percentage according to a deviation value calculation formula, wherein the deviation value calculation formula is as follows: deviation percentage= (actual value-expected value)/expected value 100%; S107, comparing the calculated deviation value with a preset threshold value, judging whether the deviation is within an acceptable range, if so, considering that the deviation is obvious, and if so, considering that the deviation is in a normal state; s108, classifying according to the property, the size and other factors of the deviation; S109, recording information such as deviation values, occurrence time, related parameters, deviation classification and the like by adopting a database, a log file and the like; S110, judging whether a control link is needed or not according to the deviation classification result, if the deviation is within an acceptable range, the control measures may not be needed to be immediately taken, and if the deviation exceeds a threshold value and meets the condition of a control strategy, the control link is decided to be entered.
5. The system of claim 4, wherein the process adjustment module receives the deviation information, performs preliminary analysis on the deviation to determine whether the deviation belongs to a tolerable range of the system, if the deviation is small and does not affect the overall stable operation of the system, the process adjustment module may choose to ignore or record the deviation to be analyzed later, if the deviation exceeds a threshold value, the process adjustment module enters a detailed evaluation stage, comprehensive evaluation of applicability and effect of various control strategies is performed through an intelligent algorithm, an optimal or suboptimal control strategy is selected, the control strategy is converted into a specific control instruction, the instruction is sent to a corresponding execution mechanism through a communication network, and the execution mechanism adjusts the operation state of the execution mechanism according to the received control instruction.
6. The closed loop linkage control system of an upstream and downstream well station of claim 5, wherein the process adjustment module comprises, in operation, the steps of: S201, receiving deviation information, including a deviation value, a deviation type and an occurrence position; S202, firstly, carrying out preliminary analysis on the deviation to judge whether the deviation belongs to a tolerable range of the system, if the deviation is small and does not influence the overall stable operation of the system, possibly selecting to ignore or record to be analyzed later, and if the deviation exceeds a threshold value, entering a detailed evaluation stage; s203, outputting the property, the size and the emergency degree of the deviation; s204, based on the deviation analysis and evaluation result, combining the information of the current running state, the historical data, the expert knowledge base and the like of the system, comprehensively evaluating the applicability and effect of various control strategies through a fuzzy logic algorithm, and selecting the optimal or suboptimal control strategy; S205, determining a specific control strategy, wherein the specific control strategy comprises parameters such as the magnitude, the direction, the acting time and the like of a control quantity; s206, converting the control strategy into a specific control instruction according to the selected control strategy and control parameters, and sending the instruction to a corresponding executing mechanism through a communication network, wherein the instruction comprises detailed information such as a unique identifier, a control quantity size, execution time and the like of the executing mechanism; S207, the executing mechanism receives a control instruction; S208, the execution mechanism correspondingly adjusts the running state and parameters of the execution mechanism according to the received control instruction; S209, outputting an execution result, including the actual adjustment amount and the adjusted state parameters.
7. The system of claim 6, wherein the feedback module receives the execution results and status information of the actuators in the process control module, compares the execution results with the expected targets, verifies whether the control results meet the requirements, maintains the current control status or performs fine tuning optimization if the deviation is eliminated or reduced to within an acceptable range, and re-performs the steps of deviation analysis, control strategy selection, control instruction generation, etc. if the deviation is still present or enlarged, and the process control module performs iterative adjustments for the existing deviation to establish a closed loop feedback mechanism in a coordinated manner.
8. The closed loop linkage control system of an upstream and downstream well station of claim 7, wherein the feedback module, when in operation, comprises the steps of: s301, a feedback module receives an execution result and current state information of an execution mechanism in a process adjustment module through a communication network, wherein the information comprises but is not limited to an adjustment value of a process parameter and an equipment running state; S302, comparing the received execution result with a preset expected target value or a safety threshold value; S303, calculating a deviation value, namely, a difference between an actual execution result and an expected target value; S304, according to the magnitude and the property of the deviation value, evaluating whether the control effect meets the requirement, if the deviation is eliminated or reduced to be within an acceptable range, namely, the deviation value is smaller than a preset tolerance threshold, entering the next step; S305, if the deviation value is within the tolerance range, the feedback module sends an instruction for maintaining the current control state or performing fine tuning optimization to the control center; S306, if the deviation value exceeds the tolerance range, namely the deviation still exists or expands, the feedback module triggers a flow of carrying out deviation analysis again; s307, re-analyzing the reasons of the deviation, wherein the re-checking of the original data, the consideration of environmental factors or the further diagnosis of the state of the equipment can be involved; S308, selecting a new control strategy or adjusting parameters of the existing control strategy according to an analysis result of the deviation reason; s309, generating a new control instruction and sending the new control instruction to an executing mechanism in the process adjustment module through a communication network; S310, adjusting process parameters or changing equipment states by an executing mechanism according to the new control instruction; And S311, continuously monitoring the execution result and the state information of the execution mechanism by the feedback module to form a closed-loop feedback mechanism.
9. The closed loop linkage control method for the upstream and downstream well stations is characterized by comprising the following steps: s1, starting a data acquisition module, and configuring a plurality of groups of sensing equipment to monitor various operation parameters of a well station in real time; s2, the sensing equipment transmits the acquired data to a data analysis module through a preset communication protocol; s3, the data analysis module receives actual operation parameter data from the data acquisition module; S4, comparing the actual operation parameters with preset expected values or safety thresholds, analyzing data through a mathematical or statistical method, and detecting whether deviation exists or not and the size and the nature of the deviation; S5, if the deviation is detected, recording deviation information and preparing for the next process adjustment, and if the deviation is not detected, continuing to monitor.
10. The method for controlling the closed loop linkage of an upstream and downstream well station according to claim 9, further comprising the steps of: S6, a process adjustment module calculates proper control quantity by using a fuzzy control algorithm according to the size and the property of the deviation; S7, generating a control instruction and sending the instruction to a corresponding executing mechanism through a communication network; s8, after the execution mechanism receives the control instruction, adjusting the technological parameters or the equipment state to try to eliminate or reduce the deviation; S9, the feedback module acquires the adjusted well station operation parameters and the equipment state information again; s10, comparing the newly acquired data with expected values, and evaluating an adjustment effect; S11, if the deviation is eliminated or reduced to be within an acceptable range, the current control state is maintained or fine tuning optimization is carried out, if the deviation still exists or expands, the step S4 is returned to carry out deviation analysis again, and the control strategy is possibly modified or the control quantity is possibly adjusted; and S12, a stable closed loop feedback mechanism is established through continuous feedback and adjustment, so that the operation parameters of the well station are ensured to be always kept in a desired range.

Description

Closed loop linkage control system and control method for upstream and downstream well stations Technical Field The invention relates to the field of well station control systems, in particular to an upstream and downstream well station closed-loop linkage control system and a control method. Background The system mainly comprises a plurality of levels such as a well station (oil well station, gas well station), a monitoring center, a dispatching center and the like, and realizes accurate control and efficient management of the oil and gas field production flow through advanced industrial control technology and information transmission means, but the upstream and downstream well station control system in the prior art lacks comprehensive application of intelligent equipment and automation technology, so that the system cannot realize automatic control in part of links, and the traditional well station control system often adopts a manual inspection or timing sampling mode to monitor operation parameters, so that the response speed of the system to operation condition change is slower, and linkage control among links is difficult to realize. Disclosure of Invention In order to overcome the problems that an upstream and downstream well station control system in the prior art lacks of intelligent equipment and comprehensive application of an automation technology, so that the system cannot realize automatic control in part links, and a traditional well station control system often adopts a manual inspection or timing sampling mode to monitor operation parameters, so that the response speed of the system to the change of the operation condition is slower, and linkage control among links is difficult to realize. The technical scheme of the invention is that the closed-loop linkage control system of the upstream and downstream well stations comprises: the data acquisition module is used for acquiring various operation parameters of the well station in real time by adopting a plurality of groups of sensing equipment and transmitting the operation parameters to the data analysis module; the data analysis module is used for comparing and analyzing the acquired actual operation parameters with a preset expected value or a safety threshold value and detecting whether deviation exists or not; The process adjustment module is used for calculating the control quantity by adopting an intelligent algorithm according to the size and the property of the deviation, sending a control instruction to a corresponding executing mechanism through a communication network, and adjusting the process parameter or the equipment state by the executing mechanism according to the control instruction so as to eliminate the deviation; and the feedback module is used for comparing the adjusted operation parameters and equipment state information of the well station with expected values again, and is linked with the process adjustment module to carry out repeated adjustment aiming at existing deviation so as to establish a closed loop feedback mechanism. The data acquisition module comprises digital skid-mounted equipment, an inspection robot, an inspection unmanned aerial vehicle and a movable equipment state monitoring sensor, wherein the digital skid-mounted equipment is used for acquiring the running state, the technological parameters and the fault information of the equipment in real time through a built-in PLC control system, the inspection robot is used for carrying out equipment inspection along a preset track or an autonomous path, the inspection unmanned aerial vehicle is used for carrying out inspection on a key area in the air, the inspection robot and the inspection unmanned aerial vehicle are respectively provided with a high-definition camera, an infrared thermal imager and other sensors to acquire the data of the appearance, the temperature, the vibration and the like of the equipment, the movable equipment state monitoring sensor is used for being installed on the key movable equipment, and the running state and the performance parameters of the equipment are monitored in real time, and the data are transmitted to a central control room for centralized processing. Preferably, the data analysis module is used for receiving the data acquired by the data acquisition module in real time, processing and analyzing the acquired data by utilizing a control algorithm and a data analysis technology, comparing the acquired actual operation parameters with a preset expected value or a safety threshold value, detecting whether deviation exists, and entering the process adjustment module to perform control operation if the deviation exists. Preferably, the data analysis module comprises the following steps when working: S101, receiving data parameters collected by field devices such as digital skid-mounted equipment, inspection robots, inspection unmanned aerial vehicles and the like in a wireless transmission mode, wherein the data parame