A geothermal well completion quality monitoring system

Abstract

The present invention relates to the technical field of geothermal well quality monitoring, and discloses a geothermal well completion quality monitoring system. The system uses a sensor to collect various types of data of geothermal wells in real time through a data acquisition module, and transmits the collected data to a data processing module. The data processing module processes and analyzes the collected data, removes data abnormal values ​​and noise, and calculates heat output, well effectiveness and water quality indicators, and calculates geothermal well completion quality indicators based on the above numerical values. The monitoring and early warning module determines the threshold value of the geothermal well completion quality indicators. When the monitoring data exceeds the threshold value, an early warning is triggered and an early warning report is generated and sent to a user interface module. The user interface module provides a visual interface, and transmits the early warning report to a display terminal for users to view data and monitoring results. By collecting and analyzing the geothermal well-related data in real time, rapid feedback is obtained when quality problems occur in the geothermal well, thereby improving the maintenance efficiency of the geothermal well.

Description

Technical Field

[0001] The present invention relates to the technical field of geothermal well quality monitoring, and in particular to a geothermal well completion quality monitoring system. Background Art

[0002] Geothermal wells are drilling structures used to extract underground thermal energy. Hot water or steam is usually extracted from deep underground to the surface through drilling technology. The main purpose of geothermal wells is to use the heat energy inside the earth for heating, power generation or other industrial purposes. Monitoring the status of geothermal wells can timely discover potential safety hazards and prevent accidents. By monitoring the performance indicators of the wells, the operation of the wells can be optimized and the utilization efficiency of thermal energy can be improved. At the same time, monitoring can ensure that the exploitation of geothermal wells will not have a negative impact on the surrounding environment.

[0003] At present, most geothermal well monitoring systems do not calculate the geothermal well completion quality index by combining the relevant data of the geothermal well, and do not make threshold judgments for this key index to provide early warning of abnormal geothermal well completion quality. As a result, when quality problems occur in geothermal wells, there is no rapid feedback, which reduces the maintenance efficiency of geothermal wells. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a geothermal well quality monitoring system, which has the function of collecting various data of geothermal wells in real time by using relevant sensors through a data acquisition module, and transmitting the collected data to a data processing module through a network. The data processing module processes and analyzes the collected data, removes data outliers and noise, and calculates the thermal energy output. , Well effectiveness And water quality indicators , and comprehensively collect data and calculate numerical values ​​to calculate geothermal well completion quality indicators , monitoring and early warning module for geothermal well completion quality indicators Threshold judgment is performed. When the monitoring data exceeds the threshold, an early warning is triggered and an early warning report is generated and sent to the user interface module. The user interface module provides a visual interface and transmits the early warning report to the display terminal for users to view the data and monitoring results. By collecting, analyzing and calculating geothermal well-related data in real time, rapid feedback can be obtained when quality problems occur in geothermal wells, thereby improving the maintenance efficiency of geothermal wells and solving the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a geothermal well completion quality monitoring system, comprising a data acquisition module, a data processing module, a monitoring and early warning module and a user interface module;

[0008] The data acquisition module collects various data of the geothermal well in real time, including wellhead temperature, downhole temperature, wellhead pressure, downhole pressure, inflow flow, outflow flow, water quality parameters and geological parameters, and transmits the collected data to the data processing module through the network;

[0009] The data processing module processes and analyzes the collected data, removes data outliers and noise, and calculates the thermal energy output , Well effectiveness And water quality indicators , and comprehensively collect data and calculate numerical values ​​to calculate geothermal well completion quality indicators , the above calculated values ​​are sent to the monitoring and early warning module;

[0010] The monitoring and early warning module is used to monitor the quality indicators of geothermal wells. Perform threshold determination. When the monitoring data exceeds the threshold, trigger an early warning and generate an early warning report to be sent to the user interface module;

[0011] The user interface module provides a visual interface and transmits the early warning report to the display terminal for users to view data and monitoring results.

[0012] Preferably, the data acquisition module collects the temperature inside and outside the geothermal well through a temperature sensor, and compiles the collected temperature data into a temperature data set and stores it in a system database.

[0013] Preferably, the data acquisition module collects the pressure inside and outside the geothermal well through a pressure sensor, and compiles the collected pressure data into a pressure data set and stores it in a system database.

[0014] Preferably, the data acquisition module collects the flow inside and outside the geothermal well through a flow meter, and compiles the collected flow data into a flow data set and stores it in a system database.

[0015] Preferably, the data acquisition module obtains water quality parameters through on-site water quality monitoring instruments, and compiles the collected water quality parameters into a water quality parameter data set and stores it in a system database. The data acquisition module obtains geological parameters through geological radar, and compiles the collected geological parameters into a geological parameter data set and stores it in the system database.

[0016] Preferably, the data processing module processes and analyzes the collected data, removes data outliers and noise, and calculates the thermal energy output , the calculation formula is as follows:

[0017] ;

[0018] In the formula, represents the heat output, Indicates flow rate, is the specific heat capacity of water, Indicates the inlet water temperature. Indicates the outlet water temperature.

[0019] Preferably, the data processing module processes and analyzes the collected data, removes data outliers and noise, and calculates the effectiveness of the well. , the calculation formula is as follows:

[0020] ;

[0021] In the formula, Indicates the effectiveness of the well, represents the heat output, Indicates the pressure of the well.

[0022] Preferably, the data processing module processes and analyzes the collected data, removes data outliers and noise, and calculates water quality indicators. , the calculation formula is as follows:

[0023] ;

[0024] In the formula, Indicates water quality indicators. Indicates the pH of water. Indicates dissolved oxygen, represents the total dissolved solids, Indicates turbidity.

[0025] Preferably, the data processing module integrates the thermal energy output , Well effectiveness And water quality indicators , calculate the quality index of geothermal well completion , the calculation formula is as follows:

[0026] ;

[0027] In the formula, Indicates the quality index of geothermal well completion. express The weight of express The weight of express The above weights are set by the system based on historical data.

[0028] Preferably, the monitoring and early warning module monitors the quality index of geothermal well completion. The threshold value is determined as follows:

[0029] The geothermal well completion quality thresholds include safety thresholds, warning thresholds, and early warning thresholds, among which:

[0030] Local thermal well completion quality indicators When it is less than 70, it means that the geothermal well is operating normally and monitoring should continue;

[0031] Local thermal well completion quality indicators When it is greater than or equal to 70 and less than 85, the alert state is triggered and a signal for regular inspection and monitoring is issued;

[0032] Local thermal well completion quality indicators When it is greater than or equal to 85, the warning state is triggered and the system should immediately sound an alarm and recommend emergency measures, including stopping the well for inspection and adjusting operating parameters.

[0033] Compared with the prior art, the present invention provides a geothermal well quality monitoring system, which has the following beneficial effects:

[0034] The present invention uses the data acquisition module to apply relevant sensors to collect various data of geothermal wells in real time, and transmits the collected data to the data processing module through the network. The data processing module processes and analyzes the collected data, removes data outliers and noise, and calculates the heat output , Well effectiveness And water quality indicators , and comprehensively collect data and calculate numerical values ​​to calculate geothermal well completion quality indicators , monitoring and early warning module for geothermal well completion quality indicators Threshold judgment is performed. When the monitoring data exceeds the threshold, an early warning is triggered and an early warning report is generated and sent to the user interface module. The user interface module provides a visual interface and transmits the early warning report to the display terminal for users to view the data and monitoring results. By collecting, analyzing and calculating geothermal well-related data in real time, rapid feedback can be obtained when quality problems occur in geothermal wells, thereby improving the maintenance efficiency of geothermal wells. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the system flow of the present invention. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Many existing monitoring systems are unable to provide real-time data. When monitoring geothermal wells, relevant data are not analyzed in time, resulting in no rapid feedback when quality problems occur in geothermal wells, which reduces the efficiency of geothermal well maintenance. Therefore, a geothermal well quality monitoring system is proposed. Figure 1 ,The system includes a data acquisition module, a data processing module, a monitoring and early warning module, and a user interface module;

[0038] The data acquisition module is responsible for real-time monitoring and recording of multiple key parameters of the geothermal well to ensure the safety and efficient operation of the well, including:

[0039] The wellhead temperature uses a high-precision temperature sensor thermocouple to measure the temperature of the wellhead, usually in degrees Celsius. The downhole temperature uses the downhole temperature sensor to obtain temperature data at different depths in the well to monitor the distribution of underground heat energy. The wellhead pressure uses a pressure sensor to measure the pressure at the wellhead to ensure the safe operation of the well. The downhole pressure uses a pressure sensor installed in the well to monitor the pressure changes in the well in real time to prevent the collapse of the well or other safety hazards. The inflow flow is monitored by a turbine flowmeter to evaluate the water supply capacity of the well. The outflow flow is also monitored by a turbine flowmeter to ensure the balance between the outflow flow and the inflow flow. Water quality parameters include pH value, dissolved oxygen, turbidity, heavy metal content, etc. Water quality changes are monitored in real time through water quality sensors. Geological parameters use geological sensors and detectors to obtain soil moisture, soil temperature and rock type related data. The above collected data is stored in the system database for further analysis and call;

[0040] The data processing module processes and analyzes the collected data, removes data outliers through the interquartile range method, removes data noise through low-pass filtering, and calculates the thermal energy output , Well effectiveness And water quality indicators , and comprehensively collect data and calculate numerical values ​​to calculate geothermal well completion quality indicators ,in:

[0041] The heat output calculation formula is as follows:

[0042] ;

[0043] In the development and utilization of geothermal wells, calculating heat output is a crucial link. By monitoring and calculating heat output, a scientific basis can be provided for the sustainable utilization of geothermal resources. In the formula, represents the heat output, Indicates flow rate, is the specific heat capacity of water, Indicates the inlet water temperature. Indicates the outlet water temperature. By calculating the heat output, the heat reserves and exploitable potential of geothermal wells can be accurately evaluated, which helps to formulate reasonable development plans and avoid waste of resources.

[0044] The calculation formula of well effectiveness is as follows:

[0045] ;

[0046] By calculating the effectiveness of the well, the intensity of geothermal resource exploitation can be reasonably controlled to avoid environmental problems caused by over-exploitation, such as ground subsidence and groundwater level decline. In the formula, Indicates the effectiveness of the well, represents the heat output, Indicates the pressure of the well. The effectiveness calculation helps to achieve sustainable utilization of geothermal resources, ensuring that future resource development is not affected while meeting current needs;

[0047] The water quality index calculation formula is as follows:

[0048] ;

[0049] Water quality directly affects the transfer efficiency of heat energy. Good water quality can improve the heat exchange efficiency and enhance the overall performance of the system. In the formula, Indicates water quality indicators. Indicates the pH of water. Indicates dissolved oxygen, represents the total dissolved solids, Indicates turbidity. Monitoring water quality indicators can reduce equipment corrosion and scaling caused by water quality problems, thereby reducing equipment maintenance costs and extending service life;

[0050] The calculation formula for geothermal well completion quality index is as follows:

[0051] ;

[0052] In the development and management of geothermal wells, calculating well quality indicators is a key link to ensure the effective utilization and sustainable development of geothermal resources. The calculation results of well quality indicators provide a scientific basis for decision makers to help them formulate reasonable resource management and development strategies. In the formula, Indicates the quality index of geothermal well completion. express The weight of express The weight of express The weights are set by the system based on historical data. By evaluating different indicators using fuzzy logic, combining expert opinions and historical data, a comprehensive evaluation is formed, and then weights are assigned. By monitoring well completion quality indicators, potential environmental risks can be discovered in a timely manner, and measures can be taken to prevent pollution and protect the surrounding ecological environment.

[0053] Monitoring and early warning module for geothermal well completion quality indicators Perform threshold determination. When the monitoring data exceeds the threshold, an early warning is triggered and an early warning report is generated, including:

[0054] The quality thresholds for geothermal well completion are divided into three categories: safety threshold, warning threshold and early warning threshold. These thresholds are set based on historical data analysis, industry standards and actual operating experience, aiming to provide a scientific basis for the safe operation of geothermal wells.

[0055] Safety threshold: When the well quality index is less than 70, it means that the operation status of the geothermal well is normal and the system can continue to monitor. The setting of this threshold ensures that within the normal operating range, the development of resources will not be affected;

[0056] Warning threshold: When the well quality index is between 70 and 85, the system enters the warning state. The triggering of this state means that there may be potential problems in the operation of the well, and regular inspection and monitoring are required. At this time, the operation team should strengthen the monitoring of the well and record relevant data for subsequent analysis;

[0057] Warning threshold: When the well quality index is greater than or equal to 85, the system triggers the warning state. The triggering of this state indicates that there is a serious risk in the operation of the well. The system should immediately issue an alarm and recommend emergency measures. At this time, the operation team needs to respond quickly, stop the well for inspection, and adjust the operating parameters to ensure the safety and stability of the well.

[0058] In the early warning state, the system has an automated alarm function to notify relevant personnel in a timely manner. The alarm can be issued in a variety of ways, including SMS, email or mobile application notification to ensure the timeliness of information transmission. At the same time, the threshold determination method is regularly evaluated, and the threshold standard is adjusted in a timely manner in combination with actual operation conditions and technological progress to improve the flexibility and adaptability of the system;

[0059] The user interface module provides a visual interface and designs a comprehensive dashboard to display key monitoring indicators in real time, such as temperature, pressure, flow rate and well completion quality indicators. It uses line charts, bar charts and pie charts to intuitively display data change trends. An obvious warning status indicator is set on the dashboard, and color coding including green safety, yellow warning and red warning is used to indicate different states to help users quickly identify potential risks. The warning report is transmitted to the display terminal and a historical data query function is provided. Users can select a specific time period to view past monitoring data and warning records for trend analysis and decision support.

[0060] By collecting, analyzing and calculating geothermal well-related data in real time, we can get rapid feedback when quality problems occur in geothermal wells, thereby improving the maintenance efficiency of geothermal wells.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A geothermal well quality monitoring system, characterized by: It includes data acquisition module, data processing module, monitoring and early warning module and user interface module; The data acquisition module collects various data of the geothermal well in real time, including wellhead temperature, downhole temperature, wellhead pressure, downhole pressure, inflow flow, outflow flow, water quality parameters and geological parameters, and transmits the collected data to the data processing module through the network; The data acquisition module collects the temperature inside and outside the geothermal well through a temperature sensor, and compiles the collected temperature data into a temperature data set and stores it in a system database; collects the pressure inside and outside the geothermal well through a pressure sensor, and compiles the collected pressure data into a pressure data set and stores it in the system database; collects the flow inside and outside the geothermal well through a flow meter, and compiles the collected flow data into a flow data set and stores it in the system database; obtains water quality parameters through an on-site water quality monitoring instrument, and compiles the collected water quality parameters into a water quality parameter data set and stores it in the system database; obtains geological parameters through a geological radar, and compiles the collected geological parameters into a geological parameter data set and stores it in the system database; The data processing module processes and analyzes the collected data, removes data outliers and noise, and calculates the thermal energy output , Well effectiveness And water quality indicators , and comprehensively collect data and calculate numerical values ​​to calculate geothermal well completion quality indicators , the above calculated values ​​are sent to the monitoring and early warning module; Heat output The calculation formula is as follows: ； In the formula, represents the heat output, Indicates flow rate, is the specific heat capacity of water, Indicates the inlet water temperature. Indicates the outlet water temperature; Well effectiveness The calculation formula is as follows: ； In the formula, Indicates the effectiveness of the well, represents the heat output, Indicates the pressure of the well; Water quality indicators The calculation formula is as follows: ； In the formula, Indicates water quality indicators. Indicates the pH of water. Indicates dissolved oxygen, represents the total dissolved solids, Indicates turbidity; The monitoring and early warning module is used to monitor the quality indicators of geothermal wells. Perform threshold determination. When the monitoring data exceeds the threshold, trigger an early warning and generate an early warning report to be sent to the user interface module; The user interface module provides a visual interface and transmits the early warning report to the display terminal for users to view data and monitoring results.

2. A geothermal well quality monitoring system according to claim 1, characterized in that: The data processing module integrates the thermal energy output , Well effectiveness And water quality indicators , calculate the quality index of geothermal well completion , the calculation formula is as follows: ； In the formula, Indicates the quality index of geothermal well completion. express The weight of express The weight of express The above weights are set by the system based on historical data.

3. A geothermal well quality monitoring system according to claim 2, characterized in that: The monitoring and early warning module is used to monitor the quality indicators of geothermal wells. The threshold value is determined as follows: The geothermal well completion quality thresholds include safety thresholds, warning thresholds, and early warning thresholds, among which: Local thermal well completion quality indicators When it is less than 70, it means that the geothermal well is operating normally and monitoring should continue; When 70 is less than or equal to the geothermal well completion quality index When it is less than 85, the alarm state is triggered and a signal for regular inspection and monitoring is issued; Local thermal well completion quality indicators When it is greater than or equal to 95, the warning state is triggered and the system should immediately issue an alarm and recommend emergency measures, including stopping the well for inspection and adjusting operating parameters.

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