Carbon dioxide multilayer reservoir optimization method and device based on geological sequestration
By determining the initial injection parameters and dynamically adjusting them based on real-time monitoring data in multi-layer reservoirs, the problem of insufficient reservoir utilization was solved, and efficient and safe carbon dioxide sequestration was achieved.
Patent Information
- Application Number
- CN202511265632.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2025-11-18
AI Technical Summary
Existing technologies for carbon dioxide sequestration in multi-layer reservoirs fail to adequately consider the differences in geological characteristics of each reservoir, resulting in insufficient reservoir utilization and potentially triggering geological risks.
By determining the initial injection parameters for each reservoir, installing flow control valves and pressure regulating devices, and dynamically adjusting based on real-time monitoring data, the carbon dioxide injection strategy can be optimized.
It improves carbon dioxide sequestration capacity, reduces leakage risk, enhances resource utilization efficiency, and lowers reservoir rupture risk.
Smart Images
Figure CN120968588A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of carbon dioxide geological storage technology, and in particular to a method and apparatus for optimizing multilayer carbon dioxide reservoirs based on geological storage. Background Technology
[0002] Carbon dioxide sequestration is a key technology for reducing atmospheric carbon dioxide concentration and addressing global climate change. By injecting carbon dioxide into suitable underground geological reservoirs (such as deep saline aquifers or depleted oil and gas fields) for long-term storage, carbon dioxide emissions can be effectively reduced.
[0003] In practical applications, for multi-layered reservoirs, traditional methods often employ uniform injection or single-reservoir injection, failing to fully consider the differences in geological characteristics of each reservoir, such as porosity, permeability, and bulk density. This results in insufficient reservoir utilization and underutilization of storage capacity, while potentially triggering geological risks due to excessively high local pressure. Summary of the Invention
[0004] This application aims to at least partially address one of the technical problems in the related art.
[0005] Therefore, one objective of this application is to propose an optimization method for multi-layer carbon dioxide reservoirs based on geological storage, comprising: determining the initial injection parameters corresponding to each reservoir, the initial injection parameters including initial injection flow rate and initial injection pressure; for any reservoir, adjusting the flow control valves and pressure regulating devices installed on the branch injection pipelines corresponding to the reservoir according to the initial injection parameters corresponding to the reservoir, wherein each branch injection pipeline corresponds to one reservoir and each branch injection pipeline is connected to the same main injection pipeline; injecting carbon dioxide into the main injection pipeline, and injecting carbon dioxide into each reservoir through the main injection pipeline and the branch injection pipelines respectively; collecting real-time monitoring data corresponding to each reservoir, determining the adjustment strategy corresponding to each reservoir based on the real-time monitoring data, and adjusting the flow control valves and pressure regulating devices installed on the branch injection pipelines of each reservoir in real time based on the adjustment strategy.
[0006] The second objective of this application is to propose an optimized device for multi-layer carbon dioxide reservoirs based on geological sequestration.
[0007] The third objective of this application is to propose an electronic device.
[0008] The fourth objective of this application is to provide a non-transitory computer-readable storage medium.
[0009] The fifth objective of this application is to provide a computer program product.
[0010] To achieve the above objectives, the first aspect of this application proposes a method for optimizing multi-layer carbon dioxide reservoirs based on geological storage, comprising: determining initial injection parameters corresponding to each reservoir, the initial injection parameters including initial injection flow rate and initial injection pressure; for any reservoir, adjusting the flow control valves and pressure regulating devices installed on the branch injection pipelines corresponding to the reservoir according to the initial injection parameters corresponding to the reservoir, wherein each branch injection pipeline corresponds to one reservoir and each branch injection pipeline is connected to the same main injection pipeline; injecting carbon dioxide into the main injection pipeline, the carbon dioxide being injected into each reservoir via the main injection pipeline and the branch injection pipelines respectively; collecting real-time monitoring data corresponding to each reservoir, determining the adjustment strategy corresponding to each reservoir based on the real-time monitoring data, and adjusting the flow control valves and pressure regulating devices installed on the branch injection pipelines of each reservoir in real time based on the adjustment strategy.
[0011] According to one embodiment of this application, determining the initial injection parameters corresponding to each reservoir includes: obtaining the geological parameters of each reservoir through geological exploration, well logging, and core analysis; evaluating the storage potential of each reservoir based on the geological parameters to obtain the evaluation results of each reservoir; establishing an injection model for each reservoir based on the evaluation results and numerical simulation technology; and simulating the migration and storage of carbon dioxide in the reservoir under different injection flow rates and different injection pressures based on the injection models, and continuously optimizing and determining the initial injection flow rate and initial injection pressure of each reservoir.
[0012] According to one embodiment of this application, before injecting carbon dioxide into the main injection pipeline, the process further includes: pre-treating the carbon dioxide to be sealed, the pre-treatment including at least purification treatment, drying treatment and compression treatment.
[0013] According to one embodiment of this application, real-time monitoring data corresponding to each reservoir is collected, including: collecting real-time monitoring data corresponding to each reservoir based on monitoring sensors corresponding to each reservoir; wherein the monitoring sensors include at least a pressure sensor, a temperature sensor, a carbon dioxide concentration sensor, and an acoustic wave monitor.
[0014] According to one embodiment of this application, determining the regulation strategy corresponding to each reservoir based on real-time monitoring data includes: transmitting the real-time monitoring data to a data processing center in real time; analyzing the real-time monitoring data corresponding to each reservoir in real time based on the data processing center, and determining the regulation strategy corresponding to each reservoir based on the analysis results.
[0015] According to one embodiment of this application, the method for optimizing multi-layer carbon dioxide reservoirs based on geological sequestration further includes: after injecting carbon dioxide into the reservoir, periodically evaluating the sequestration effect of each reservoir, the evaluation indicators including the amount of carbon dioxide sequestrated, the stability of reservoir pressure and the risk of carbon dioxide leakage, and further optimizing the regulation strategies corresponding to each reservoir based on the evaluation results and real-time monitoring data.
[0016] To achieve the above objectives, a second aspect of this application proposes a multi-layer carbon dioxide reservoir optimization device based on geological storage, comprising: a determination module for determining initial injection parameters corresponding to each reservoir, the initial injection parameters including initial injection flow rate and initial injection pressure; a first adjustment module for adjusting flow control valves and pressure regulating devices installed on branch injection pipelines corresponding to any reservoir according to the initial injection parameters corresponding to the reservoir, wherein each branch injection pipeline corresponds to one reservoir and each branch injection pipeline is connected to the same main injection pipeline; an injection module for injecting carbon dioxide into the main injection pipeline, the carbon dioxide being injected into each reservoir via the main injection pipeline and the branch injection pipelines; and a second adjustment module for collecting real-time monitoring data corresponding to each reservoir, determining adjustment strategies corresponding to each reservoir based on the real-time monitoring data, and adjusting the flow control valves and pressure regulating devices installed on the branch injection pipelines of each reservoir in real time based on the adjustment strategies.
[0017] According to one embodiment of this application, the determining module is further configured to: obtain geological parameters of each reservoir through geological exploration, well logging and core analysis; evaluate the storage potential of each reservoir based on the geological parameters to obtain the evaluation results of each reservoir; establish an injection model for each reservoir based on the evaluation results and numerical simulation technology; and simulate the migration and storage of carbon dioxide in the reservoir under different injection flow rates and different injection pressures based on the injection model, and continuously optimize and determine the initial injection flow rate and initial injection pressure of each reservoir.
[0018] According to one embodiment of this application, the injection module is further configured to: pre-treat the carbon dioxide to be sealed, the pre-treatment including at least purification treatment, drying treatment and compression treatment.
[0019] According to one embodiment of this application, the second adjustment module is further configured to: acquire real-time monitoring data corresponding to each reservoir based on monitoring sensors corresponding to each reservoir; wherein the monitoring sensors include at least a pressure sensor, a temperature sensor, a carbon dioxide concentration sensor, and an acoustic wave monitor.
[0020] According to one embodiment of this application, the second regulation module is further configured to: transmit real-time monitoring data to a data processing center in real time; analyze the real-time monitoring data corresponding to each reservoir in real time based on the data processing center, and determine the regulation strategy corresponding to each reservoir based on the analysis results.
[0021] According to one embodiment of this application, the second regulation module is further configured to: periodically evaluate the storage effect of each reservoir after injecting carbon dioxide into the reservoir, the evaluation indicators including the amount of carbon dioxide stored, the reservoir pressure stability and the risk of carbon dioxide leakage, and further optimize the regulation strategy corresponding to each reservoir based on the evaluation results and real-time monitoring data.
[0022] To achieve the above objectives, a third aspect of this application provides an electronic device comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to implement the geologically sealed carbon dioxide multilayer reservoir optimization method as described in the first aspect of this application.
[0023] To achieve the above objectives, a fourth aspect of this application provides a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to implement the geologically sealed carbon dioxide multilayer reservoir optimization method as described in the first aspect of this application.
[0024] To achieve the above objectives, a fifth aspect of this application provides a computer program product, including a computer program that, when executed by a processor, implements the method for optimizing multi-layer carbon dioxide reservoirs based on geological sequestration as described in the first aspect of this application.
[0025] This application achieves at least the following beneficial effects: By precisely controlling the initial injection parameters of each reservoir, this application ensures that carbon dioxide can be injected into each reservoir uniformly and efficiently, thereby improving the carbon dioxide sequestration capacity of the reservoir and reducing the risk of leakage; through real-time monitoring and dynamic adjustment of each reservoir, precise injection can be carried out according to the specific conditions of different reservoirs, avoiding over-injection into a certain reservoir and improving resource utilization efficiency; real-time monitoring data can help to promptly detect potential reservoir pressure anomalies or other problems, and make rapid adjustments through flow control valves and pressure regulating equipment, thereby reducing the risks of carbon dioxide leakage, reservoir rupture, etc.; each reservoir can be individually adjusted according to its characteristics, which not only avoids the waste of reservoir resources, but also improves the synergistic effect of multiple reservoirs working simultaneously, thereby enhancing the overall sequestration capacity. Attached Figure Description
[0026] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:
[0027] Figure 1 This is an exemplary schematic diagram illustrating an embodiment of a multi-layer carbon dioxide reservoir optimization method based on geological sequestration.
[0028] Figure 2 This is an exemplary schematic diagram of a multi-layer carbon dioxide reservoir optimization device based on geological sequestration, as shown in one embodiment of this application.
[0029] Figure 3 This is a schematic diagram of an electronic device according to one embodiment of this application. Detailed Implementation
[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0031] Figure 1 This is an exemplary schematic diagram illustrating a multi-layer carbon dioxide reservoir optimization method based on geological sequestration, as shown in this application. Figure 1 As shown, this method for optimizing multi-layer carbon dioxide reservoirs based on geological sequestration includes the following steps:
[0032] S101, determine the initial injection parameters corresponding to each reservoir, including the initial injection flow rate and the initial injection pressure.
[0033] In some feasible approaches, before injecting carbon dioxide, when determining the initial injection parameters for each reservoir, geological parameters (including porosity, permeability, thickness, burial depth, formation pressure, and temperature) can be obtained through geological exploration, well logging, and core analysis. Then, based on these geological parameters, the storage potential of each reservoir is assessed, yielding evaluation results (evaluation indicators may include storage capacity, safety, and injection feasibility). If the evaluation results meet the carbon dioxide storage conditions, an injection model for each reservoir is established using numerical simulation techniques. Based on these models, the migration and storage of carbon dioxide in the reservoir under different injection flow rates and pressures are simulated, continuously optimizing and determining the initial injection flow rate and pressure for each reservoir.
[0034] Among them, when continuously optimizing and determining the initial injection flow rate and initial injection pressure of each reservoir, the optimization objectives can be to ensure that the reservoir pressure does not exceed the safety threshold, the carbon dioxide migration range meets expectations, and the storage efficiency is maximized.
[0035] For example, suppose there are three reservoirs. Geological parameters of the three reservoirs are obtained through geological exploration, well logging, and core analysis. Reservoir 1 has a porosity of 20%, permeability of 100 mD, thickness of 50 m, and burial depth of 1000 m; Reservoir 2 has a porosity of 15%, permeability of 50 mD, thickness of 40 m, and burial depth of 1200 m; Reservoir 3 has a porosity of 10%, permeability of 20 mD, thickness of 30 m, and burial depth of 1500 m. The analytic hierarchy process (AHP) is used to evaluate the storage potential of the three reservoirs. The evaluation shows that Reservoir 1 has the highest storage potential, followed by Reservoir 2, and Reservoir 3 has the lowest.
[0036] In this application, for reservoirs with high porosity and high permeability, a larger initial injection flow rate and a moderate initial injection pressure can be used; for reservoirs with low porosity and low permeability, a smaller initial injection flow rate and a higher initial injection pressure are used. For example, based on reservoir assessment results and numerical simulations, the initial injection flow rate for reservoir 1 is determined to be 200 t / h and the initial injection pressure to be 10 MPa; the initial injection flow rate for reservoir 2 is 150 t / h and the initial injection pressure to be 12 MPa; and the initial injection flow rate for reservoir 3 is 100 t / h and the initial injection pressure to be 15 MPa.
[0037] S102, for any reservoir, adjust the flow control valve and pressure regulating device installed on the branch injection pipeline corresponding to the reservoir according to the initial injection parameters corresponding to the reservoir. Each branch injection pipeline corresponds to a reservoir, and each branch injection pipeline is connected to the same main injection pipeline.
[0038] In this application, multiple branch injection pipelines are arranged on the main injection pipeline, each branch injection pipeline corresponds to a reservoir, and each branch injection pipeline is equipped with a flow control valve and a pressure regulating device.
[0039] In this application, the main injection pipe is made of high-strength alloy steel, and its diameter is designed to be 0.5-1.5m depending on the injection scale.
[0040] For example, continuing with the case of three reservoirs, three branch injection pipelines are arranged on the main injection pipeline, corresponding to reservoir 1, reservoir 2, and reservoir 3 respectively. Each branch injection pipeline is equipped with a flow control valve and a pressure regulating device.
[0041] Among them, the flow control valve can precisely control the carbon dioxide injection flow rate of its corresponding reservoir, and the adjustment range of the flow control valve can be set to 10-500t / h.
[0042] The pressure regulating device can adjust the injection pressure to match the reservoir pressure. The pressure regulating range of the pressure regulating device can be set to 5-25MPa.
[0043] In this application, after determining the initial injection parameters corresponding to each reservoir, the flow control valves and pressure regulating devices installed on the branch injection pipelines corresponding to the reservoirs are adjusted according to the initial injection parameters corresponding to the reservoirs, so that the flow control valves installed on the branch injection pipelines corresponding to the reservoirs meet the initial injection flow rate corresponding to the reservoirs, and the pressure regulating devices installed on the branch injection pipelines corresponding to the reservoirs meet the initial injection pressure corresponding to the reservoirs.
[0044] S103, carbon dioxide is injected into the main injection pipeline, and the carbon dioxide is injected into each reservoir through the main injection pipeline and the branch injection pipeline respectively.
[0045] In this application, before injecting carbon dioxide into the main injection pipeline, the process further includes pre-treating the carbon dioxide to be sealed to improve the quality of the injected carbon dioxide. The pre-treatment includes at least purification, drying, and compression.
[0046] During the purification process, chemical absorption can be used to remove impurities such as hydrogen sulfide and oxygen from carbon dioxide, so that the purity of carbon dioxide reaches more than 99.5%.
[0047] During the drying process, adsorption drying technology can be used to reduce the water content of carbon dioxide to below 50 ppm, thus preventing water from combining with carbon dioxide during injection to form corrosive substances.
[0048] During the compression process, a compressor unit can be used. The compressor unit is a multi-stage centrifugal compressor that can compress carbon dioxide to 8-20 MPa to meet the injection pressure requirements of reservoirs at different depths. A cooling device is provided during the compression process to control the carbon dioxide temperature at 30-50℃.
[0049] In this application, pretreated carbon dioxide is injected into the main injection pipeline through a delivery pipeline, and the pretreated carbon dioxide is injected into each reservoir through the main injection pipeline and branch injection pipelines respectively.
[0050] S104: Collect real-time monitoring data corresponding to each reservoir, determine the regulation strategy corresponding to each reservoir based on the real-time monitoring data, and adjust the flow control valves and pressure regulating devices installed on the branch injection pipelines of each reservoir in real time based on the regulation strategy.
[0051] During the carbon dioxide injection process, real-time monitoring data for each reservoir is collected based on the monitoring sensors corresponding to each reservoir.
[0052] The monitoring sensors include at least a pressure sensor, a temperature sensor, a carbon dioxide concentration sensor, and an acoustic wave monitor.
[0053] Pressure sensors, temperature sensors, and carbon dioxide concentration sensors can be installed in monitoring wells of each reservoir. Acoustic monitoring instruments can be installed around the storage site. Monitoring wells can be located around the injection wells.
[0054] The pressure sensor has a measurement range of 0-50 MPa and an accuracy of ±0.1 MPa, and is used to monitor pressure changes in the reservoir.
[0055] The temperature sensor has a measurement range of -20 to 100℃ and an accuracy of ±0.2℃, and is used to monitor changes in reservoir temperature in real time.
[0056] Among them, the carbon dioxide concentration sensor has a measurement range of 0-100% and an accuracy of ±0.5%, and is used to monitor the distribution of carbon dioxide in the reservoir.
[0057] Among them, the acoustic monitoring instrument analyzes the changes in porosity and permeability of the reservoir and the migration of carbon dioxide by emitting acoustic waves into the reservoir and receiving the reflected signals.
[0058] In this application, the monitoring sensor is connected to the data processing center to transmit real-time monitoring data to the data processing center in real time; the data processing center analyzes the real-time monitoring data corresponding to each reservoir in real time, and determines the regulation strategy corresponding to each reservoir based on the analysis results.
[0059] The data processing center consists of data acquisition equipment, computer servers, and control software. The data acquisition equipment connects to monitoring sensors via wired or wireless means to collect various monitoring data in real time; the computer servers are equipped with high-performance processors and large-capacity storage devices, enabling them to quickly process and store massive amounts of monitoring data; the control software uses a visual interface to display injection parameters (flow rate, pressure) and monitoring data (pressure, temperature, carbon dioxide concentration, etc.) for each reservoir in real time.
[0060] In this application, when the pressure rise rate of a reservoir exceeds a preset threshold (e.g., 0.5 MPa / d) based on real-time monitoring data analysis, the injection flow rate of the reservoir is automatically reduced or the pressure setting value of the injection pressure regulating device is appropriately reduced.
[0061] In this application, when it is found from real-time monitoring data analysis that the distribution of carbon dioxide in a certain reservoir is uneven, the injection flow rate at different locations in the reservoir can be adjusted (multiple sub-injection pipelines can be set on the branch injection pipeline corresponding to the same reservoir, and each sub-injection pipeline is equipped with a flow control valve and pressure regulating device to adjust the injection parameters at different locations in the reservoir, for example, the injection flow rate can be appropriately increased at locations with low carbon dioxide concentration) to promote the uniform distribution of carbon dioxide.
[0062] The above-mentioned adjustment strategies for each reservoir are determined based on real-time monitoring data. Based on these strategies, the flow control valves and pressure regulating devices installed on the branch injection pipelines of each reservoir are adjusted in real time. This enables timely detection and resolution of problems that occur during the injection process, ensuring the safety and stability of carbon dioxide injection.
[0063] After injecting carbon dioxide into the reservoir, the storage effect of each reservoir after carbon dioxide injection is evaluated periodically. The evaluation indicators include carbon dioxide storage amount, reservoir pressure stability and carbon dioxide leakage risk. Based on the evaluation results and real-time monitoring data, the regulation strategies corresponding to each reservoir are further optimized to maximize the overall storage efficiency of multi-layer reservoirs.
[0064] For example, suppose that analysis of monitoring data and core samples reveals that the carbon dioxide sequestration of reservoir 1 reaches the expected 90%, reservoir 2 reaches 85%, and reservoir 3 reaches 80%, indicating a good overall sequestration effect. Based on the assessment results, the injection flow rate is further adjusted to 190 t / h for reservoir 1, 160 t / h for reservoir 2, and 110 t / h for reservoir 3.
[0065] This application proposes a method for optimizing multi-layer carbon dioxide reservoirs based on geological storage. The method involves determining initial injection parameters for each reservoir, including initial injection flow rate and initial injection pressure. For any given reservoir, flow control valves and pressure regulating devices installed on the branch injection pipelines corresponding to that reservoir are adjusted according to the initial injection parameters. Each branch injection pipeline corresponds to one reservoir and is connected to the same main injection pipeline. Carbon dioxide is injected into the main injection pipeline, and then injected into each reservoir via the main and branch injection pipelines. Real-time monitoring data for each reservoir is collected, and based on this data, a regulation strategy is determined for each reservoir. The flow control valves and pressure regulating devices installed on the branch injection pipelines of each reservoir are then adjusted in real-time according to the regulation strategy.
[0066] This application achieves at least the following beneficial effects: By precisely controlling the initial injection parameters of each reservoir, this application ensures that carbon dioxide can be injected into each reservoir uniformly and efficiently, thereby improving the carbon dioxide sequestration capacity of the reservoir and reducing the risk of leakage; through real-time monitoring and dynamic adjustment of each reservoir, precise injection can be carried out according to the specific conditions of different reservoirs, avoiding over-injection into a certain reservoir and improving resource utilization efficiency; real-time monitoring data can help to promptly detect potential reservoir pressure anomalies or other problems, and make rapid adjustments through flow control valves and pressure regulating equipment, thereby reducing the risks of carbon dioxide leakage, reservoir rupture, etc.; each reservoir can be individually adjusted according to its characteristics, which not only avoids the waste of reservoir resources, but also improves the synergistic effect of multiple reservoirs working simultaneously, thereby enhancing the overall sequestration capacity.
[0067] Figure 2 This is an exemplary schematic diagram of a multi-layer carbon dioxide reservoir optimization device based on geological sequestration, as shown in this application. Figure 2 As shown, the multi-layer carbon dioxide reservoir optimization device 200 based on geological sequestration includes a determination module 201, a first adjustment module 202, an injection module 203, and a second adjustment module 204, wherein:
[0068] The determination module 201 is used to determine the initial injection parameters corresponding to each reservoir, including the initial injection flow rate and the initial injection pressure.
[0069] The first adjustment module 202 is used to adjust the flow control valve and pressure adjustment device installed on the branch injection pipeline corresponding to any reservoir according to the initial injection parameters of the reservoir. Each branch injection pipeline corresponds to a reservoir and each branch injection pipeline is connected to the same main injection pipeline.
[0070] Injection module 203 is used to inject carbon dioxide into the main injection pipeline, and the carbon dioxide is injected into each reservoir through the main injection pipeline and the branch injection pipeline respectively.
[0071] The second regulation module 204 is used to collect real-time monitoring data corresponding to each reservoir, determine the regulation strategy corresponding to each reservoir based on the real-time monitoring data, and perform real-time regulation on the flow control valves and pressure regulation devices installed on the branch injection pipelines of each reservoir based on the regulation strategy.
[0072] This device ensures uniform and efficient carbon dioxide injection into each reservoir by precisely controlling the initial injection parameters, thereby improving the reservoir's carbon dioxide sequestration capacity and reducing leakage risks. Real-time monitoring and dynamic adjustment of each reservoir allow for precise injection tailored to its specific conditions, preventing over-injection into any particular reservoir and improving resource utilization efficiency. Real-time monitoring data helps identify potential reservoir pressure anomalies or other problems promptly, enabling rapid adjustments via flow control valves and pressure regulating equipment to reduce risks such as carbon dioxide leakage and reservoir fracturing. Each reservoir can be individually adjusted according to its characteristics, avoiding resource waste and enhancing the synergistic effect of multiple reservoirs operating simultaneously, thus improving overall sequestration capacity.
[0073] Furthermore, module 201 is also used to: obtain geological parameters of each reservoir through geological exploration, well logging and core analysis; evaluate the storage potential of each reservoir based on the geological parameters; obtain the evaluation results of each reservoir; establish injection models for each reservoir based on the evaluation results and numerical simulation technology; and simulate the migration and storage of carbon dioxide in the reservoir under different injection flow rates and different injection pressures based on the injection models, and continuously optimize and determine the initial injection flow rate and initial injection pressure of each reservoir.
[0074] Furthermore, the injection module 203 is also used to pre-treat the carbon dioxide to be sealed, the pre-treatment including at least purification treatment, drying treatment and compression treatment.
[0075] Furthermore, the second adjustment module 204 is also used to: collect real-time monitoring data corresponding to each reservoir based on the monitoring sensors corresponding to each reservoir; wherein the monitoring sensors include at least a pressure sensor, a temperature sensor, a carbon dioxide concentration sensor and an acoustic wave monitor.
[0076] Furthermore, the second regulation module 204 is also used to: transmit real-time monitoring data to the data processing center in real time; analyze the real-time monitoring data corresponding to each reservoir in real time based on the data processing center, and determine the regulation strategy corresponding to each reservoir based on the analysis results.
[0077] Furthermore, the second regulation module 204 is also used to: periodically evaluate the storage effect of each reservoir after injecting carbon dioxide into the reservoir, the evaluation indicators include the amount of carbon dioxide stored, the stability of reservoir pressure and the risk of carbon dioxide leakage, and further optimize the regulation strategy corresponding to each reservoir based on the evaluation results and real-time monitoring data.
[0078] To implement the above embodiments, this application also proposes an electronic device 300, such as... Figure 3As shown, the electronic device 300 includes a processor 301 and a memory 302 communicatively connected to the processor. The memory 302 stores instructions that can be executed by at least one processor. The instructions are executed by at least one processor 301 to implement the multi-layer carbon dioxide reservoir optimization method based on geological sequestration as shown in the above embodiment.
[0079] To implement the above embodiments, this application also proposes a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to enable a computer to implement the geologically sealed carbon dioxide multilayer reservoir optimization method as shown in the above embodiments.
[0080] To implement the above embodiments, this application also proposes a computer program product, including a computer program that, when executed by a processor, implements the multi-layer carbon dioxide reservoir optimization method based on geological sequestration as shown in the above embodiments.
[0081] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0082] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0084] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A method for optimizing multi-layer carbon dioxide reservoirs based on geological sequestration, characterized in that, include: Determine the initial injection parameters for each reservoir, including the initial injection flow rate and the initial injection pressure; For any of the reservoirs, the flow control valves and pressure regulating devices installed on the branch injection pipelines corresponding to the reservoirs are adjusted according to the initial injection parameters corresponding to the reservoirs. Each branch injection pipeline corresponds to a reservoir, and each branch injection pipeline is connected to the same main injection pipeline. Carbon dioxide is injected into the main injection pipeline, and the carbon dioxide is injected into each of the reservoirs via the main injection pipeline and the branch injection pipelines, respectively. Real-time monitoring data corresponding to each of the reservoirs is collected, and a regulation strategy corresponding to each of the reservoirs is determined based on the real-time monitoring data. Based on the regulation strategy, the flow control valves and pressure regulating devices installed on the branch injection pipelines of each reservoir are adjusted in real time.
2. The method according to claim 1, characterized in that, The determination of the initial injection parameters corresponding to each reservoir includes: Geological parameters of each reservoir are obtained through geological exploration, well logging and core analysis. The storage potential of each reservoir is evaluated based on the geological parameters to obtain the evaluation results of each reservoir. Based on the evaluation results and numerical simulation technology, an injection model for each reservoir is established. Based on the injection model, the migration and storage of carbon dioxide in the reservoir under different injection flow rates and different injection pressures are simulated, and the initial injection flow rate and initial injection pressure of each reservoir are continuously optimized and determined.
3. The method according to claim 2, characterized in that, Before injecting carbon dioxide into the main injection pipe, the method further includes: The carbon dioxide to be sealed is pretreated, and the pretreatment includes at least purification, drying and compression.
4. The method according to claim 3, characterized in that, The real-time monitoring data collected for each of the reservoirs includes: Real-time monitoring data for each of the reservoirs is obtained based on the monitoring sensors corresponding to each of the reservoirs. The monitoring sensors include at least a pressure sensor, a temperature sensor, a carbon dioxide concentration sensor, and an acoustic wave monitor.
5. The method according to claim 4, characterized in that, The step of determining the adjustment strategy corresponding to each of the reservoirs based on the real-time monitoring data includes: The real-time monitoring data is transmitted to the data processing center in real time. The data processing center analyzes the real-time monitoring data corresponding to each reservoir in real time, and determines the adjustment strategy corresponding to each reservoir based on the analysis results.
6. The method according to any one of claims 1-5, characterized in that, The method further includes: After injecting carbon dioxide into the reservoir, the storage effect of each reservoir is evaluated periodically. The evaluation indicators include the amount of carbon dioxide stored, the reservoir pressure stability, and the risk of carbon dioxide leakage. Based on the evaluation results and the real-time monitoring data, the regulation strategies corresponding to each reservoir are further optimized.
7. A multi-layer carbon dioxide reservoir optimization device based on geological sequestration, characterized in that, include: The determination module is used to determine the initial injection parameters corresponding to each reservoir, wherein the initial injection parameters include the initial injection flow rate and the initial injection pressure; The first adjustment module is used to adjust the flow control valve and pressure adjustment device installed on the branch injection pipeline corresponding to any of the reservoirs according to the initial injection parameters corresponding to the reservoirs, wherein each branch injection pipeline corresponds to a reservoir and each branch injection pipeline is connected to the same main injection pipeline. An injection module is used to inject carbon dioxide into the main injection pipeline, and the carbon dioxide is injected into each of the reservoirs via the main injection pipeline and the branch injection pipelines, respectively. The second regulation module is used to collect real-time monitoring data corresponding to each of the reservoirs, determine the regulation strategy corresponding to each of the reservoirs based on the real-time monitoring data, and adjust the flow control valves and pressure regulation devices installed on the branch injection pipelines of each reservoir in real time based on the regulation strategy.
8. An electronic device, comprising: At least one processor; as well as, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-6.
9. A non-transitory computer-readable storage medium storing computer instructions, wherein, The computer instructions are used to cause the computer to perform the method according to any one of claims 1-6.
10. A computer program product comprising a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1-6.