CO2 geological sequestration earth surface leakage monitoring device
By deploying multi-level end points and modularly designed CO2 geological sequestration monitoring devices at both the surface and underground, the problem of multi-level CO2 concentration monitoring has been solved, enabling efficient and accurate CO2 leak detection and remote data analysis, and reducing operating costs.
Patent Information
- Application Number
- CN202520488194.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Existing CO2 geological sequestration monitoring devices cannot effectively monitor changes in CO2 concentration at multiple layers on the surface and in shallow underground, resulting in inaccurate leak detection.
Design a CO2 geological sequestration surface leakage monitoring device, including surface ventilation terminals and underground ventilation terminals deployed from top to bottom, equipped with a test module, a control module and a communication module, with test terminal interfaces that can be opened as needed, enabling remote control and data transmission, and combining electrochemical sensors and infrared sensors to measure CO2 concentration at multiple locations.
It has achieved precise monitoring of CO2 concentration at different depths on the surface and underground, and has built a comprehensive monitoring system from the surface to the underground. It can detect signs of leakage in a timely manner, with high data accuracy and reduced operation and maintenance costs.
Smart Images
Figure CN223955435U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a gas geological storage technical field, concretely relates to a CO2 geological storage surface leakage monitoring device. BACKGROUND
[0002] CO2 geological storage is the core component of CCUS technology, which refers to injecting the captured CO2 into the selected and safe geological body, and permanently storing the CO2 in the deep saline aquifer, the oil and gas field being exploited or depleted, the deep unrecoverable coal seam, the goaf, the shale, the basalt layer, the shallow sea and other geological bodies through the storage mechanisms such as structural storage, residual storage, adsorption storage, dissolution storage and mineralization storage, so as to realize large-scale carbon removal technology. However, due to the damage of the original stress of the stratum, the complex and changeable seepage law of the fracture evolution, the CO2 geological storage has a high leakage risk, which seriously threatens the plants, animals and humans on the surface. Therefore, it is of great safety and environmental protection significance to determine the CO2 concentration distribution after CO2 geological storage.
[0003] The commonly used CO2 geological storage leakage monitoring instrument at present is inserted into the surface soil environment to carry out soil CO2 environment detection, detect the surface soil CO2 concentration change characteristics to determine whether there is CO2 shallow leakage, and determine the change of the CO2 concentration injected into the shallow soil. The utility model patent with publication number CN216747019U discloses a carbon dioxide surface leakage monitoring device, but it cannot actively determine or remotely determine the change of the CO2 concentration in the shallow surface soil, and does not have the function of determining the CO2 concentration of multiple layers of the surface and shallow underground. UTILITY MODEL CONTENT
[0004] The technical problem to be solved by the utility model is how to determine the CO2 concentration of multiple layers of the surface and shallow underground.
[0005] In order to solve the above technical problems, the utility model provides the following technical scheme: a CO2 geological storage surface leakage monitoring device, which comprises a surface venting end head and an underground venting end head arranged from top to bottom in multiple layers, and further comprises a test end head interface, a test module and a control module; the surface venting end head and the underground venting end head are connected with the test end head interface having the on-demand opening function, the test end head interface is connected with the test module, and the test module is further connected with the control module.
[0006] The utility model discloses a plurality of ground surface ventilation end and underground ventilation end are arranged in different layer environment and determine end number, can realize ground surface and shallow ground multiple layer position determination CO2 concentration, and the test end interface of the utility model has the function of opening on demand, can according to the layer position of specific test to determine the open end port, in the testing process, only open the layer position joint port that needs testing, other port is closed, avoids different layer position interference, to realize accurate test CO2 concentration of the layer position that needs testing.
[0007] Preferably, the test module includes an air suction unit, which is connected to the test end interface.
[0008] The utility model discloses a test module has the air suction unit, can form negative pressure environment, and the air suction unit is connected to the test end interface, can absorb the air of the layer position monitored by the ground surface ventilation end and underground ventilation port connected to the test end interface.
[0009] Preferably, the utility model discloses a communication module, which is connected to the test module.
[0010] The communication module of the utility model is used for receiving or sending relevant data, operation instructions, etc., and can receive remote signal control instructions to carry out CO2 gas concentration testing. The staff does not need to frequently go to the scene, and can timely acquire and analyze data through remote control and data transmission functions.
[0011] Preferably, the utility model discloses a display module, which is connected to the test module.
[0012] The display module of the utility model can display the end number, end property and CO2 concentration of the test, and can clearly display data in strong or weak light environment, which is convenient for the staff to check on site.
[0013] Preferably, the utility model discloses a power supply module, which is connected to the test module.
[0014] The power supply module of the utility model can supply power to the test module, test end interface, communication module, control module, display module, etc.
[0015] Preferably, the utility model further includes an external charging module, which is connected to the power supply module.
[0016] Preferably, the power supply module, display module, communication module, control module, test module and test end interface are located in a shell.
[0017] Preferably, the external charging module and the ground surface ventilation end and underground ventilation end are located outside the shell.
[0018] Preferably, the surface venting end head and the underground venting end head have a gas-permeable water-proof dust-proof membrane outside the port.
[0019] The gas-permeable water-proof dust-proof membrane outside the port of the surface venting end head can isolate surface water and surface dust, and facilitate the smooth entry of surface gas into the end head.
[0020] Preferably, the test module includes an electrochemical sensor or an infrared sensor.
[0021] Compared with the prior art, the advantages of the present application are that: through the cooperative work of the underground venting end head and the surface venting end head, the CO2 concentration of different depth horizons of the surface and the shallow underground can be effectively monitored, a monitoring system from underground to ground is constructed, the gas distribution of the shallow area of the site is comprehensively mastered, the CO2 leakage signs possibly from the deep coal seam can be found in time, and the test end head interface of the present application has an on-demand opening function, only the corresponding test end head interface is opened when a certain horizon is selected for testing, different horizon interference is avoided, and the test data accuracy is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 A principle diagram of the carbon dioxide geological storage surface leakage monitoring device of the present application is shown in the figure.
[0023] Figure 2 A structure schematic diagram of the carbon dioxide geological storage surface leakage monitoring device of the present application is shown in the figure. DETAILED DESCRIPTION
[0024] In order to enable the personnel in the technical field to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the personnel in the field without creative labor should belong to the protection scope of the present application.
[0025] EMBODIMENT
[0026] In combination with Figure 1 and Figure 2 , the present embodiment provides a CO2 geological storage surface leakage monitoring device, which comprises a plurality of self-upwardly and downwardly arranged multi-layer surface venting end heads 202 (U1, U2, U1) and underground venting end heads 201 (D1, D2, D3, …, D n , …, U2, U1) and underground venting end heads 201 (D1, D2, D3, …, D n), a test joint port 203, a test module 204, a display module 205, a communication module 206, a control module 207, a power supply module 208 and an external charging module 209.
[0027] The display module 205, the communication module 206, the control module 207, the power supply module 208 and the test joint port 203 are connected with the test module 204, all the surface venting joints 202 and the underground venting joints 201 are connected with the test joint port 203, the communication module 206, the display module 205, the power supply module 208, the control module 207, the test module 204 and the test joint port 203 are located in a shell 210, the surface venting joints 202 and the underground venting joints 201 and the external charging module 209 are located outside the shell 210, and the sleeve for connecting the underground venting joint 201 and the test joint port 203 is located in the backfill 211.
[0028] The surface venting joint 202 of the embodiment is a joint for collecting gas in the surface environment, and the underground venting joint 201 is a joint for collecting gas in the shallow underground environment. The surface venting joint 202 and the underground venting joint 201 are arranged in different horizon environments according to the needs of the test horizon. The underground venting joint 201 is numbered according to the horizon arrangement sequence from top to bottom, and the surface venting joint 201 is numbered according to the horizon arrangement sequence from bottom to top, so that the CO2 concentration in multiple horizons of the surface and the shallow underground can be measured. The surface venting joint 202 has a gas-permeable water-proof and dust-proof film outside the port, which is used to isolate the surface water and the surface dust, so that the surface gas can smoothly enter the joint. The underground venting joint 201 also has a gas-permeable water-proof and dust-proof film outside the port, which is used to isolate the shallow underground cement soil, so that the underground gas can smoothly enter the joint.
[0029] The test joint port 203 in the embodiment connects the test module 204 and the surface venting joint 201 and the underground venting joint 202. The test joint port 203 has an on-demand opening function, and can determine the open joint port according to the specific test horizon. During the test process, only the joint port of the horizon to be tested is opened, and the other joint ports are closed.
[0030] The test module 204 is used to test the air of the monitored horizon connected by the test joint port 203. The test module 204 has an air suction unit (not shown in the figure) therein, which can form a negative pressure environment to absorb the air of the monitored horizon connected by the test joint port. The gas absorbed by the air suction unit is tested by an internal test unit for the concentration of CO2 gas during the absorption process. The internal test unit includes but is not limited to an electrochemical sensor, an infrared sensor and other devices that can test the concentration of CO2 gas.
[0031] The display module 205 of the embodiment is used to display the experimental parameters such as the end number, end property, CO2 concentration and the like of the test during the test.
[0032] The communication module 206 of the embodiment is used to receive and send relevant data, operation instructions and the like, and can remotely transmit the test results to a data transmission module (not shown in the figure) having the functions of data display and data storage, so as to receive remote signal control instructions to carry out the CO2 gas concentration test of the corresponding sensor. The communication module 206 has the USB reading function, and is convenient for data transmission.
[0033] The control module 207 of the embodiment is used to receive cloud instructions or on-site operation instructions to carry out the CO2 gas concentration test of the corresponding test port interface, the CO2 gas concentration data transmission of the corresponding layer, and the instrument setting and the like.
[0034] The power supply module 208 of the embodiment can supply power to the test module 204, the test end interface 203, the communication module 206, the control module 207, the display module 205 and the like. The power supply module 208 has an external charging module 209. The external charging module 209 in the embodiment includes a solar charging panel, a wind power generation device and the like.
[0035] The monitoring specific process of the CO2 geological storage surface leakage monitoring device of the embodiment is as follows:
[0036] The staff sets the test time interval through the control module 207 preset program every day, which is 3 hours in the embodiment, and determines the layers to be tested and the test end interfaces corresponding to the layers. After each test time interval, the control module controls the opening and closing of each test end interface. During the test, the power supply module 208 supplies power to the test module 204, the test end interface 203, the control module 207 and the display module 205.
[0037] When the CO2 concentration test of a certain layer is selected, the corresponding test end interface is opened, and the other test end interfaces are closed. The air of the monitored layer of the surface vent end or the underground vent port connected with the opened test end interface is absorbed by the air suction unit in the test module to form a negative pressure environment. During the absorption of the gas, the test module uses the internal test unit, i.e. the electrochemical sensor and the infrared sensor, to test the CO2 gas concentration of the layer. During the test, the display module displays the end number and the CO2 concentration.
[0038] If the CO2 concentration of a certain layer is found to be abnormal, i.e., beyond the normal fluctuation range, the test time interval is shortened, in this embodiment, the time interval is shortened to 1 hour, the layer is monitored intensively, and the concentration change is analyzed in combination with the surrounding environmental factors (such as rainfall, farmland irrigation, etc.);
[0039] During the test, the communication module 206 can also use the wireless transmission device special for 4G / 5G network to continuously maintain the connection with the remote data receiving module, and transmit the test results to the data receiving module in real time, and the data receiving module displays and stores the data.
[0040] The staff can also control the device to carry out CO2 concentration test by sending remote signal control instructions in the remote monitoring center, and can also adjust the test parameters according to the actual situation. The staff can also use the USB reading function of the communication module every week to read the test data in a week to the encrypted mobile hard disk for backup, and upload it to the cloud server for long-term storage.
[0041] The CO2 geological storage surface leakage monitoring device provided by the embodiment can successfully monitor the CO2 concentration of the surface and different depth layers of the underground through the cooperative work of the underground venting end and the surface venting end according to the requirements of active measurement, remote measurement, timing measurement and different layer measurement, and an effective monitoring system from the surface to the underground is constructed. According to the requirements of active measurement, remote measurement, timing measurement and different layer measurement, the end interface opening module is controlled according to the test end number, the gas distribution of the shallow area of the site is comprehensively mastered, the CO2 leakage signs possibly from the deep coal seam can be found in time, and the test end interface of the utility model has the function of opening on demand, so that the interference of different layers is avoided, and the data accuracy is ensured.
[0042] The utility model discloses a test device built-in suction pump and other devices, change the instrument into negative pressure environment, high -efficient absorption of air, combine infrared absorption sensor and electrochemical sensor method combined test method, accurate determination of CO2 concentration, compare with professional detection agency data for many times, the error can be controlled within 3%.
[0043] The utility model discloses through remote control and data transmission function, can acquire and analyze data in time, and staff need not frequently go to the scene, and display module can clearly show data under strong light environment and weak light environment, and make things convenient for on -the -spot staff to check.
[0044] The modular design of the utility model makes it only replace the fault test end interface and the communication module once in the monitoring process of one and a half years, and the whole device is not replaced, so that the maintenance cost is reduced. The solar charging plate device can effectively utilize natural energy under the natural environment of the site, reduces the dependence on external power supply, and reduces the long-term operation cost.
[0045] The above only discloses preferred embodiments of the utility model, and cannot limit the protection scope of the utility model with this, therefore, equivalent changes made according to the utility model patent application scope still belong to the range covered by the utility model.
Claims
1. A CO2 geological storage surface leak monitoring device, characterized in that, The surface venting end and the underground venting end are arranged in multiple layers from top to bottom, and further include a test end interface, a test module and a control module; the surface venting end and the underground venting end are connected with the test end interface with a function of opening on demand, the test end interface is connected with the test module, and the test module is further connected with the control module.
2. The CO2 geological storage surface leakage monitoring device according to claim 1, wherein, The test module includes an air suction unit connected with the test end interface.
3. The CO2 geological storage surface leakage monitoring device according to claim 1, wherein, Further included is a communication module connected with the test module.
4. The CO2 geological storage surface leakage monitoring apparatus according to claim 3, wherein, Further included is a display module connected with the test module.
5. A CO2 geological storage surface leak monitoring apparatus according to claim 4, wherein, Further included is a power supply module connected with the test module.
6. A CO2 geological storage surface leak monitoring apparatus according to claim 5, wherein, Further included is an external charging module connected with the power supply module.
7. A CO2 geological storage surface leak monitoring apparatus according to claim 6, wherein, The power supply module, the display module, the communication module, the control module, the test module and the test end interface are located in an outer shell.
8. A CO2 geological storage surface leak monitoring apparatus according to claim 7, wherein, The external charging module and the surface venting end and the underground venting end are located outside the outer shell.
9. A CO2 geological storage surface leak monitoring apparatus according to claim 8, wherein, The surface venting end and the underground venting end have a gas-permeable, water-proof and dust-proof film outside the ports.
10. The CO2 geological storage surface leakage monitoring apparatus according to claim 1, wherein, The test module includes an electrochemical sensor or an infrared sensor.