Cluster well mouth visual plunger gas lift control system

Abstract

The invention discloses a cluster well mouth visual plunger gas lift control system, and belongs to the technical field of oil and gas field automatic control systems, the cluster well mouth visual plunger gas lift control system comprises a database construction module, the input end of the database construction module is connected with an RTU, the output end of the database construction module is connected with a function module, and the output end of the function module is connected with a UI interface module and the RTU. According to the cluster well wellhead visual plunger gas lift control system, the problems that an existing wellhead integrated system RTU is displayed through a station control platform, gas well data in the RTU cannot be checked on site, data query, operation curve checking and operation parameter site setting of multiple plunger gas lift wells of a cluster well group cannot be achieved, and the operation efficiency of the multiple plunger gas lift wells of the cluster well group cannot be improved are solved. And visual query and control means are lacked.

Description

Technical Field

[0001] This invention belongs to the technical field of oil and gas field automated control systems, specifically relating to a cluster wellhead visualization plunger gas lift control system. Background Technology

[0002] Based on the major trend of intelligent transformation of gas wells, the intelligent transformation of plunger gas lift gas wells has been gradually launched, and the widespread application of integrated wellhead systems has greatly improved the efficiency of gas well production management.

[0003] Existing integrated wellhead systems (RTUs, or Remote Terminal Units) use communication methods such as 4G and fiber optics to upload data from each gas well in a cluster to a remote SCADA system (Supervisory Control and Data Acquisition). This platform enables the acquisition and transmission of wellhead data, and simultaneously provides intelligent remote control of the plunger gas lift wells based on platform-based intelligent algorithms and control commands. However, RTU data cannot be directly viewed at the well site, lacking intuitive query and control methods. Remote operation requires contacting well site personnel, causing significant inconvenience for on-site technicians in debugging and setting plunger gas lift operating parameters. Early plunger control systems were primarily designed for single wells, with one device per well, and lacked the ability to view historical plunger gas lift operating curves on-site. Data logs were insufficient for analyzing plunger operating effects and guiding adjustments to plunger operating procedures, and these systems were also costly. Summary of the Invention

[0004] The purpose of this invention is to provide a cluster wellhead visualization plunger gas lift control system, which solves the problems of existing integrated wellhead RTU systems relying on the station control platform for display, making it impossible to view gas well data in the RTU on-site, and also failing to realize data query, operation curve viewing, and on-site setting of operation parameters for multiple plunger gas lift wells in a cluster well group, lacking intuitive query and control methods.

[0005] The technical solution adopted in this invention is a cluster wellhead visualization plunger gas lift control system, including a database construction module, the input end of the database construction module is connected to the RTU, the output end of the database construction module is connected to a functional module, and the output end of the functional module is connected to the UI interface module and the RTU respectively. The database construction module is used to acquire, allocate, store, and manage wellhead data in the RTU; The functional modules are used to perform data acquisition, data processing, curve plotting, access control, and wellhead control on the database construction module; The UI module is used to display data from functional modules individually or in combination.

[0006] The invention is further characterized by: The database construction module includes a basic database, a database to be displayed, and a storage database; the basic database, the database to be displayed, and the storage database are connected sequentially; the basic database is used to parse the communication protocol of the RTU to obtain basic data; the database to be displayed processes the basic data in the basic database and then stores it; the storage database includes a production report data module, a historical curve module, and an operation record module, which retrieves data from the database to be displayed and stores it according to the functions of each module.

[0007] The database to be displayed will perform basic data processing on the base database, including denoising, calculation, and unit conversion.

[0008] The functional modules include a data display unit, a curve unit, a storage unit, a control unit, and an encryption unit; the data display unit is connected to the basic database, the curve unit, the storage unit, and the encryption unit; the curve unit is connected to the storage unit; and the control unit is connected to the RTU and the encryption unit. The data display unit is used to read and process basic database data and then store it; the curve unit is used to read data from the data display unit to complete curve drawing, and to retrieve fixed data and time axis from the data display unit at fixed time intervals; the storage unit is used to store the fixed data and time axis retrieved by the curve unit; the control unit communicates bidirectionally with the RTU to send control commands to the RTU and control wellhead actions; the encryption unit is used to implement access control between different functions of the system.

[0009] The data display unit is used to read data from the basic database, process it, and then store it. Specifically, after reading the data from the basic database, the data display unit determines whether the data can be directly displayed. If so, the data is stored directly; otherwise, the data is processed accordingly, including: If calculations are required, the data will be processed according to a preset algorithm and then stored. If the format needs to be adjusted, the data should be converted to the corresponding format according to the data type before storage; If unit conversion is required, the data should be converted to the actual display unit before storage.

[0010] The storage unit is used to store the fixed data and time axis captured by the curve unit. Specifically, the data length is determined according to the time axis and data size, and the storage area is then constructed according to the data length, storage time and data format to create different storage spaces in the system; the required data is captured from the data display unit according to the data name and the data interval to be stored; after data verification, it is stored in the designated storage area.

[0011] The UI interface module includes a main interface, a plunger data interface, a system setting interface, a historical curve interface, a production report interface, and an operation record interface. The main interface and the plunger data interface are both connected to the data display unit; the system setting interface is connected to the control unit and the encryption unit; the historical curve interface and the production report interface are both connected to the curve unit; and the operation record interface is connected to the control unit. The main interface displays basic gas well data; the plunger data interface displays real-time production data, production curves, and valve control functions of the current gas well; the system settings interface adjusts the current production system of the gas well; the historical curve interface displays data curves of wellhead pressure, status, and instantaneous flow rate; the production report interface queries production data for a specified time; and the operation log interface records operation records related to system restart well opening control and system settings.

[0012] The beneficial effects of this invention are: This invention relates to a cluster wellhead visualization plunger gas lift control system, which can be connected to a wellhead integrated system RTU. It can read, store, record, and display data from each well in the cluster well group connected to the RTU in real time, and can communicate bidirectionally with the RTU to realize data query and control of each plunger gas lift well in the field cluster well group. Technicians can view and maintain the system on-site without carrying additional tools, making on-site maintenance of plunger gas lift process wells more convenient, improving the plunger drainage operation effect, and increasing gas well production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the cluster wellhead visualization plunger gas lift control system of the present invention; Figure 2 This is a schematic diagram of the data construction module in the cluster wellhead visualization plunger gas lift control system of the present invention; Figure 3 This is a diagram illustrating the data processing procedure in the basic database within the cluster wellhead visualization plunger gas lift control system of this invention. Figure 4 This is a schematic diagram of the structure of the database stored in the cluster wellhead visualization plunger gas lift control system of the present invention; Figure 5 This is a diagram illustrating the data processing process of the data display unit in the cluster wellhead visualization plunger gas lift control system of this invention; Figure 6 This is a schematic diagram of the curve unit in the cluster wellhead visualization plunger gas lift control system of the present invention; Figure 7 This is a schematic diagram of the storage unit in the cluster wellhead visualization plunger gas lift control system of the present invention; Figure 8 This is a schematic diagram of the control unit in the cluster wellhead visualization plunger gas lift control system of the present invention; Figure 9 This is a schematic diagram of the encryption unit in the cluster wellhead visualization plunger gas lift control system of the present invention; Figure 10 This is a schematic diagram of the UI interface module in the cluster wellhead visualization plunger gas lift control system of the present invention. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0015] This invention relates to a cluster wellhead visualization plunger gas lift control system, such as... Figure 1 As shown, it includes a database construction module, the input of which is connected to the RTU, and the output of which is connected to a functional module. The output of the functional module is connected to both the UI module and the RTU.

[0016] The database construction module is used to acquire, allocate, store, and manage wellhead data in the RTU, enabling data sharing, reducing data redundancy, maintaining data independence, achieving centralized data control, and ensuring data consistency and maintainability to achieve data security and reliability.

[0017] like Figure 2 As shown, the database construction module mainly designs the overall database architecture and structure according to different usage requirements by parsing the data protocol between the RTU and the remote platform. This includes a basic database, a display database, and a storage database; these three databases are connected sequentially. The basic database is built by parsing the communication protocol of the field RTU, obtaining basic data according to the data type, register name, data address, etc., in the data protocol. The display database processes the basic data from the basic database and then stores it. Figure 3 As shown, the processing specifically includes data denoising, calculation, and unit conversion; the storage database includes a production report data module, a historical curve module, and an operation record module, such as... Figure 4 As shown, data is retrieved from the database to be displayed and stored according to the functions of each module.

[0018] The functional modules are used to perform data acquisition, data processing, curve plotting, access control, and wellhead control on the database construction module. The functional modules include a data display unit, a curve plotting unit, a storage unit, a control unit, and an encryption unit. The data display unit is connected to the basic database, curve plotting unit, storage unit, and encryption unit; the curve plotting unit is connected to the storage unit; and the control unit is connected to the RTU and encryption unit.

[0019] The data display unit is used to read data from the underlying database, process it, and then store it, such as... Figure 5As shown, specifically: after reading data from the basic database, the data display unit determines whether the data can be directly displayed. If so, the data is stored directly; otherwise, the data is processed accordingly, including: If calculations are required, the data will be processed according to a preset algorithm and then stored. If the format needs to be adjusted, the data should be converted to the corresponding format according to the data type before storage; If unit conversion is required, the data should be converted to the actual display unit before storage.

[0020] like Figure 6 As shown, after displaying the data type of the data display unit, the curve unit completes the creation of the curve interface and retrieves fixed data and time axis from the display area at fixed time intervals.

[0021] The storage units are constructed with different storage spaces to store the fixed data and time axis captured by the curve units; such as Figure 7 As shown, specifically: the data length is determined based on the timeline and data size; the storage area then constructs different storage spaces for the system based on the data length, storage time, and data format; the required data is retrieved from the data display unit according to the name of the data to be stored and the interval between the data to be stored; after data verification, it is stored in the designated storage area.

[0022] The control unit relies on the system's on-site RTU bidirectional communication mechanism to directly send control commands to the wellhead RTU based on function commands, controlling wellhead actions such as setting well opening / closing procedures and valve opening / closing commands, thereby achieving control over wellhead actions. Figure 8 As shown.

[0023] Encryption units are used to manage access permissions between different functions of the system. For example... Figure 9 As shown, to avoid misoperation, a key needs to be entered when operating the control unit. The encryption unit issues control commands by correctly recognizing the key, thereby sending control commands to the wellhead RTU and controlling the wellhead actions.

[0024] The UI (User Interface) module is used to display data from functional modules individually or in combination. These interfaces facilitate convenient on-site viewing and control, such as... Figure 10 As shown, the interface includes: a main interface, a plunger data interface, a system setting interface, a historical curve interface, a production report interface, and an operation record interface. The main interface and plunger data interface are both connected to the data display unit; the system setting interface is connected to the control unit and the encryption unit; the historical curve interface and production report interface are both connected to the curve unit; and the operation record interface is connected to the control unit.

[0025] The main interface displays basic gas well data, allowing on-site personnel to quickly and intuitively understand the basic status of the connected gas well. The plunger data interface displays real-time production data of the current gas well (including casing pressure, instantaneous flow rate, load coefficient, etc.), production curves, and valve control functions. The system settings interface is used to adjust the current production system of the gas well. The historical curve interface displays curve data of wellhead pressure, status, and instantaneous flow rate. The production report interface allows users to query production data for a specified time and retrieve it at any time. The operation log interface records operation records related to well opening / closing control and system settings in the system.

[0026] Example 1 This embodiment provides a cluster wellhead visualization plunger gas lift control system, such as... Figure 1 As shown, it includes a database construction module, the input of which is connected to the RTU, and the output of which is connected to a functional module. The output of the functional module is connected to the UI interface module and the RTU respectively. The database construction module is used to acquire, allocate, store, and manage wellhead data in the RTU; The functional modules are used to perform data acquisition, data processing, curve plotting, access control, and wellhead control on the database construction module; The UI module is used to display data from functional modules individually or in combination.

[0027] Example 2 Based on Example 1, the database construction module includes a basic database, a database to be displayed, and a storage database; the basic database, the database to be displayed, and the storage database are connected sequentially; the basic database is used to parse the communication protocol of the RTU to obtain basic data; the database to be displayed processes the basic data in the basic database and then stores it, the processing including denoising, calculation, and unit conversion, such as... Figure 3 As shown; the storage database includes a production report data module, a historical curve module, and an operation record module. Data is retrieved from the database to be displayed and stored according to the functions of each module, such as... Figure 4 As shown.

[0028] Example 3 Based on Embodiment 2, the functional module includes a data display unit, a curve unit, a storage unit, a control unit, and an encryption unit; the data display unit is connected to the basic database, the curve unit, the storage unit, and the encryption unit; the curve unit is connected to the storage unit; and the control unit is connected to the RTU and the encryption unit. The data display unit is used to read and process basic database data and then store it; the curve unit is used to read data from the data display unit to complete curve drawing, and to retrieve fixed data and time axis from the data display unit at fixed time intervals; the storage unit is used to store the fixed data and time axis retrieved by the curve unit; the control unit communicates bidirectionally with the RTU to send control commands to the RTU and control wellhead actions; the encryption unit is used to implement access control between different functions of the system.

[0029] The data display unit is used to read data from the underlying database, process it, and then store it, such as... Figure 5 As shown, specifically: after reading data from the basic database, the data display unit determines whether the data can be directly displayed. If so, the data is stored directly; otherwise, the data is processed accordingly, including: If calculations are required, the data will be processed according to a preset algorithm and then stored. If the format needs to be adjusted, the data should be converted to the corresponding format according to the data type before storage; If unit conversion is required, the data should be converted to the actual display unit before storage.

[0030] The storage unit is used to store the fixed data and time axis captured by the curve unit, such as Figure 7 As shown, specifically: the data length is determined based on the timeline and data size; the storage area then constructs different storage spaces for the system based on the data length, storage time, and data format; the required data is retrieved from the data display unit according to the name of the data to be stored and the interval between the data to be stored; after data verification, it is stored in the designated storage area.

[0031] Example 4 Based on Embodiment 3, the UI interface module includes a main interface, a plunger data interface, a system setting interface, a historical curve interface, a production report interface, and an operation record interface; the main interface and the plunger data interface are both connected to the data display unit; the system setting interface is connected to the control unit and the encryption unit; the historical curve interface and the production report interface are both connected to the curve unit; and the operation record interface is connected to the control unit. The main interface displays basic gas well data; the plunger data interface displays real-time production data, production curves, and valve control functions of the current gas well; the system settings interface adjusts the current production system of the gas well; the historical curve interface displays data curves of wellhead pressure, status, and instantaneous flow rate; the production report interface queries production data for a specified time; and the operation log interface records operation records related to system restart well opening control and system settings.

Claims

1. A cluster wellhead visualized plunger gas lift control system, characterized in that, It includes a database construction module, the input of which is connected to the RTU, and the output of which is connected to a functional module. The output of the functional module is connected to both the UI module and the RTU. The database construction module is used to acquire, allocate, store, and manage wellhead data in the RTU; The functional modules are used to perform data acquisition, data processing, curve plotting, access control, and wellhead control on the database construction module. The UI module is used to display data from the functional modules individually or in combination.

2. The cluster wellhead visualization plunger gas lift control system according to claim 1, characterized in that, The database construction module includes a basic database, a database to be displayed, and a storage database; the basic database, the database to be displayed, and the storage database are connected sequentially; the basic database is used to parse the communication protocol of the RTU to obtain basic data; the database to be displayed processes the basic data in the basic database and then stores it; the storage database includes a production report data module, a historical curve module, and an operation record module, which retrieves data from the database to be displayed and stores it according to the functions of each module.

3. The cluster wellhead visualization plunger gas lift control system according to claim 2, characterized in that, The database to be displayed will perform basic data processing on the base database, including denoising, calculation, and unit conversion.

4. The cluster wellhead visualization plunger gas lift control system according to claim 3, characterized in that, The functional module includes a data display unit, a curve unit, a storage unit, a control unit, and an encryption unit; the data display unit is connected to the basic database, the curve unit, the storage unit, and the encryption unit; the curve unit is connected to the storage unit; the control unit is connected to the RTU and the encryption unit. The data display unit is used to read basic database data, process it, and then store it; the curve unit is used to read data from the data display unit to complete curve drawing, and to retrieve fixed data and time axis from the data display unit at fixed time intervals; the storage unit is used to store the fixed data and time axis retrieved by the curve unit; the control unit communicates bidirectionally with the RTU to send control commands to the RTU to control wellhead actions; the encryption unit is used to implement permission management between different functions of the system.

5. The cluster wellhead visualization plunger gas lift control system according to claim 4, characterized in that, The data display unit is used to read basic database data, process it, and then store it. Specifically, after reading the basic database data, the data display unit determines whether the data can be directly displayed. If so, the data is stored directly; otherwise, the data is processed accordingly, including: If calculations are required, the data will be processed according to a preset algorithm and then stored. If the format needs to be adjusted, the data should be converted to the corresponding format according to the data type before storage; If unit conversion is required, the data should be converted to the actual display unit before storage.

6. The cluster wellhead visualization plunger gas lift control system according to claim 5, characterized in that, The storage unit is used to store the fixed data and time axis captured by the curve unit. Specifically, the data length is determined according to the time axis and data size, and the storage area is then constructed with different storage spaces in the system according to the data length, storage time and data format. The required data is captured from the data display unit according to the data name and the data interval to be stored. After data verification, the data is stored in the designated storage area.

7. The cluster wellhead visualization plunger gas lift control system according to claim 3, characterized in that, The UI interface module includes a main interface, a plunger data interface, a system setting interface, a historical curve interface, a production report interface, and an operation record interface; the main interface and the plunger data interface are both connected to the data display unit; the system setting interface is connected to the control unit and the encryption unit; the historical curve interface and the production report interface are both connected to the curve unit; and the operation record interface is connected to the control unit. The main interface is used to display basic gas well data; the plunger data interface is used to display the current real-time production data, production curves, and valve control functions of the gas well; the system setting interface is used to adjust the current production system of the gas well; the historical curve interface is used to display data curves of wellhead pressure, status, and instantaneous flow rate; the production report interface is used to query production data for a specified time; and the operation record interface is used to record operation records related to system restart well opening control and system settings.

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