Carbon dioxide geological sequestration quantity grading and evaluating method, system, equipment and medium
By acquiring geological data and storage efficiency coefficients, the carbon dioxide storage capacity is evaluated step by step, which solves the problem of low evaluation accuracy in existing technologies and achieves a more accurate assessment of the storage capacity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD
- Filing Date
- 2024-11-04
- Publication Date
- 2026-05-08
AI Technical Summary
Existing methods for assessing carbon dioxide geological reserves have low accuracy and lack systematicity, resulting in significant differences in assessment results obtained by different methods.
This paper provides a method for classifying and evaluating the geological reserves of carbon dioxide. By acquiring geological data and the storage efficiency coefficient, the method evaluates the carbon dioxide reserves in a progressive manner, including the calculation of theoretical, effective, technical and economic reserves.
This improved the accuracy of carbon dioxide geological sequestration assessment and provided effective and reliable data guidance for carbon dioxide geological sequestration work.
Smart Images
Figure CN121998462A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of carbon dioxide geological storage technology, and in particular to a method, system, equipment and medium for classifying and evaluating the amount of carbon dioxide geologically stored. Background Technology
[0002] Carbon capture, utilization and storage (CCUS) refers to the technology of capturing and separating carbon dioxide from different carbon sources such as energy use, industrial production, biomass utilization exhaust gas, and air, and transporting it to suitable sites for utilization or storage, ultimately achieving carbon dioxide emission reduction.
[0003] Depending on the geological body being stored, CCUS can generally be divided into two main categories: oil displacement utilization (CCUS) and saline water storage (CCS). The former aims to displace oil and gas and improve oil and gas recovery while also considering geological storage, while the latter aims to directly store carbon dioxide by injecting it into deep saline water layers to achieve long-term isolation of carbon dioxide from the atmosphere and mitigate the greenhouse effect.
[0004] Existing methods for evaluating carbon dioxide geological reserves mainly include volumetric methods and mechanistic methods. Due to the difficulty in obtaining parameter values and the lack of standardized criteria in the application of mechanistic methods, volumetric methods are usually used. However, enterprises generally use different volumetric methods to evaluate carbon dioxide reserves based on actual available data, resulting in a lack of systematic carbon dioxide reserves evaluation methods. This leads to significant differences in the evaluation results of carbon dioxide geological reserves obtained through different volumetric methods.
[0005] Therefore, there is an urgent need for a systematic method for classifying and evaluating the geological reserves of carbon dioxide to improve the accuracy of evaluating the geological reserves of carbon dioxide. Summary of the Invention
[0006] This invention provides a method, system, equipment, and medium for classifying and evaluating carbon dioxide geological reserves, in order to address the shortcomings of existing methods for evaluating carbon dioxide geological reserves, such as low accuracy and poor guidance.
[0007] This invention provides a method for classifying and evaluating the geological reserves of carbon dioxide, including:
[0008] Obtain geological data, carbon dioxide sequestration efficiency coefficient, and carbon dioxide sequestration economic efficiency coefficient for the area to be evaluated.
[0009] Based on the geological data of the area to be evaluated, the theoretical carbon dioxide sequestration capacity of the area to be evaluated is obtained;
[0010] Based on the geological data of the area to be evaluated, the effective reservoirs in the area to be evaluated are determined, and the geological data of the effective reservoirs are obtained.
[0011] Based on the geological data of the effective reservoirs, the effective carbon dioxide sequestration capacity of the area to be evaluated is obtained;
[0012] Based on the carbon dioxide sequestration efficiency coefficient and the effective carbon dioxide sequestration capacity of the area to be evaluated, the technical carbon dioxide sequestration capacity of the area to be evaluated is obtained.
[0013] Based on the economic efficiency coefficient of carbon dioxide sequestration and combined with the technical carbon dioxide sequestration capacity of the area to be evaluated, the economic carbon dioxide sequestration capacity of the area to be evaluated is obtained.
[0014] In one implementation scheme, obtaining the theoretical carbon dioxide sequestration capacity of the area to be evaluated based on geological data of the area includes:
[0015] Based on the geological data of the area to be evaluated, the total reservoir area, reservoir flattening thickness, average reservoir porosity, and carbon dioxide density under formation conditions are obtained.
[0016] The theoretical carbon dioxide sequestration capacity of the area to be evaluated is obtained based on the total reservoir area, reservoir flattening thickness, average reservoir porosity, and carbon dioxide density under formation conditions.
[0017] In one implementation scheme, the expression for the theoretical carbon dioxide sequestration capacity is:
[0018] M tr =ρ CO2 ×A×H×φ / 10 6 ,
[0019] In the expression for theoretical carbon dioxide sequestration capacity, M tr ρ represents the theoretical carbon dioxide sequestration capacity of the area to be evaluated. CO2 φ represents the carbon dioxide density under formation conditions, A represents the total reservoir area of the area to be evaluated, H represents the flattened thickness of the reservoir in the area to be evaluated, and φ represents the average porosity of the reservoir in the area to be evaluated.
[0020] In one implementation, obtaining the effective carbon dioxide sequestration capacity of the area to be evaluated based on the geological data of the effective reservoir includes:
[0021] Based on the geological data of the effective reservoir, the effective area, effective reservoir thickness, and effective porosity of the effective reservoir for carbon dioxide sequestration at the site level are obtained.
[0022] The effective carbon dioxide storage capacity of the area to be evaluated is obtained based on the effective area of the effective reservoir for carbon dioxide storage, the effective reservoir thickness for carbon dioxide storage, and the effective porosity of the reservoir for carbon dioxide storage.
[0023] In one implementation scheme, the expression for the effective carbon dioxide sequestration capacity is:
[0024] M ef =ρ CO2 ×A e ×H e ×φ e / 10 6 ,
[0025] In the expression for effective carbon dioxide sequestration, M ef ρ represents the effective carbon dioxide sequestration capacity of the area to be evaluated. CO2 A represents the carbon dioxide density under geological conditions. e H represents the effective area of the site-level reservoir capable of storing carbon dioxide. e φ represents the effective reservoir thickness at the site level capable of storing carbon dioxide. e This indicates the effective porosity of a site-level energy storage carbon dioxide reservoir.
[0026] In one implementation scheme, the expression for the technical carbon dioxide sequestration capacity is:
[0027] M tc =M ef ×K u ,
[0028] In the expression for the amount of carbon dioxide sequestration in technology, M tc M represents the technical carbon dioxide sequestration capacity of the area to be evaluated. ef K represents the effective carbon dioxide sequestration capacity of the area to be evaluated. u This represents the carbon dioxide sequestration efficiency coefficient of the area to be evaluated.
[0029] In one implementation scheme, the expression for economic carbon dioxide sequestration capacity is:
[0030] M ec =M tc ×E e ,
[0031] In the expression for economic carbon dioxide sequestration, M ec M represents the economic carbon dioxide sequestration capacity of the area to be evaluated. tc E represents the technical carbon dioxide sequestration capacity of the area to be evaluated. e This represents the economic efficiency coefficient of carbon dioxide sequestration in the area to be evaluated.
[0032] This invention also provides a system for classifying and evaluating the geological reserves of carbon dioxide, comprising:
[0033] The data acquisition module is used to: acquire geological data, carbon dioxide sequestration efficiency coefficient, and carbon dioxide sequestration economic efficiency coefficient of the area to be evaluated;
[0034] The first evaluation module is used to: obtain the theoretical carbon dioxide sequestration capacity of the area to be evaluated based on the geological data of the area to be evaluated;
[0035] The data processing module is used to: determine the effective reservoirs in the area to be evaluated based on the geological data of the area to be evaluated, and obtain the geological data of the effective reservoirs;
[0036] The second evaluation module is used to: obtain the effective carbon dioxide sequestration capacity of the area to be evaluated based on the geological data of the effective reservoir;
[0037] The third evaluation module is used to: obtain the technical carbon dioxide sequestration capacity of the area to be evaluated based on the carbon dioxide sequestration efficiency coefficient and the effective carbon dioxide sequestration capacity of the area to be evaluated.
[0038] The fourth evaluation module is used to: obtain the economic carbon dioxide sequestration capacity of the area to be evaluated based on the economic efficiency coefficient of carbon dioxide sequestration and the technical carbon dioxide sequestration capacity of the area to be evaluated.
[0039] The present invention also provides an electronic device, including a processor and a memory storing a computer program, wherein the processor executes the computer program to implement any of the above-described methods for classifying and evaluating geological carbon dioxide reserves.
[0040] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-described methods for classifying and evaluating the geological reserves of carbon dioxide.
[0041] The present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer is able to execute any of the above-described methods for classifying and evaluating the geological reserves of carbon dioxide.
[0042] This invention provides a method, system, equipment, and medium for grading and evaluating carbon dioxide geological reserves. By combining geological data of the area to be evaluated, considering the carbon dioxide storage efficiency coefficient affected by technological conditions, and the carbon dioxide storage economic efficiency coefficient affected by policies, laws and regulations, and economic conditions, the method evaluates the carbon dioxide storage capacity of the area to be evaluated in a progressive manner. This allows for a more objective and systematic evaluation of carbon dioxide geological reserves, greatly improving the accuracy of the evaluation and providing effective and reliable data guidance for the development of carbon dioxide geological reserves work. Attached Figure Description
[0043] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0044] Figure 1 This is a flowchart illustrating a method for classifying and evaluating the geological reserves of carbon dioxide provided by the present invention.
[0045] Figure 2 A schematic diagram illustrating the classification of geological carbon dioxide reserves.
[0046] Figure 3 This is a schematic diagram of a carbon dioxide geological sequestration classification and evaluation system provided by the present invention.
[0047] Figure 4 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation
[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, embodiments of this invention, and should not be construed as limiting the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. In the description of this invention, it should be understood that the terminology used is for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0049] The following is combined with Figures 1-4 This invention describes the method, system, equipment, and medium for classifying and evaluating carbon dioxide geological reserves. It should be noted that the implementing entity of the carbon dioxide geological reserve classification and evaluation method provided by this invention can be any network-side device / terminal-side device that meets the technical requirements, such as a carbon dioxide geological reserve classification and evaluation apparatus.
[0050] Figure 1 This is a flowchart illustrating the method for classifying and evaluating carbon dioxide geological reserves provided by this invention. (Refer to...) Figure 1 The present invention provides a method for classifying and evaluating the geological reserves of carbon dioxide, which may include:
[0051] Step S110: Obtain geological data of the area to be evaluated, as well as the carbon dioxide sequestration efficiency coefficient and carbon dioxide sequestration economic efficiency coefficient applicable to the area. The geological data may include geological research data, geophysical exploration data, and existing well data. The geological data may include, for example, stratigraphic characteristics, structural and sedimentary characteristics, and caprock and reservoir distribution characteristics. It can be used to carry out carbon dioxide sequestration activities such as burial depth, temperature, pressure, area, thickness, and porosity of the carbon dioxide storage layer. The carbon dioxide sequestration efficiency coefficient and carbon dioxide sequestration economic efficiency coefficient can be determined manually based on the actual conditions of the area to be evaluated.
[0052] For example, the efficiency coefficient of site-level carbon dioxide sequestration can be obtained by combining comprehensive geological studies, core laboratory physical simulation experiments, and numerical simulation studies. The carbon dioxide sequestration efficiency coefficient is controlled by factors such as the geological conditions of the sequestration site, the sequestration mode, and the selection of injection points.
[0053] For example, economic distance, economically feasible injection capacity and supply capacity can be considered, and the economic coefficient of site-level carbon dioxide sequestration can be obtained with the help of numerical models and field experience. The economic coefficient of carbon dioxide sequestration is related to factors such as supply capacity, source-sink distance and injection capacity.
[0054] Step S120: Based on the geological data of the area to be evaluated, obtain the theoretical carbon dioxide sequestration capacity of the area to be evaluated.
[0055] This embodiment defines the theoretical carbon dioxide sequestration capacity as the total pore volume of the available geological reservoir used for carbon dioxide storage, representing the upper limit of the geological carbon dioxide sequestration capacity. That is, all pores of the target reservoir below the effective caprock are used for carbon dioxide storage. The effective caprock refers to continuous and stable rock formations such as gypsum rock, mudstone, limestone, and siltstone that meet the safe sequestration conditions, whose underlying reservoir meets the supercritical temperature and pressure conditions for carbon dioxide, and can serve as the final safety barrier for carbon dioxide sequestration. Under normal conditions, the reservoir depth used in the calculation should be no less than 800m and preferably no more than 3500m.
[0056] In one embodiment, step S120 may include:
[0057] Based on the geological data of the area to be evaluated, the total reservoir area, reservoir flattening thickness, average reservoir porosity, and carbon dioxide density under formation conditions are obtained.
[0058] The theoretical carbon dioxide sequestration capacity of the area to be evaluated is obtained based on the total reservoir area, reservoir flattening thickness, average reservoir porosity, and carbon dioxide density under formation conditions.
[0059] The expression for the theoretical carbon dioxide sequestration capacity is as follows:
[0060] M tr=ρ CO2 ×A×H×φ / 10 6 ,
[0061] In the expression for theoretical carbon dioxide sequestration capacity, M tr Mt, ρ represents the theoretical carbon dioxide sequestration capacity of the area to be evaluated. CO2 This represents the density of carbon dioxide under formation conditions, expressed in kg / m³. 3 A represents the total reservoir area of the region to be evaluated, in km². 2 H represents the flattened thickness of the reservoir in the area to be evaluated, in meters (m), and φ represents the average porosity of the reservoir in the area to be evaluated, in millimeters (%).
[0062] Step S130: Based on the geological data of the area to be evaluated, determine the effective reservoirs in the area to be evaluated and obtain the geological data of the effective reservoirs.
[0063] In this embodiment, an effective reservoir is a reservoir with a certain thickness and scale below the effective caprock, preferably a reservoir group with a thickness of not less than 5m, good connectivity, and stable distribution within the region. Step S130 can determine the effective reservoir of the area to be evaluated based on the definition of an effective reservoir.
[0064] Step S140: Based on the geological data of the effective reservoir, obtain the effective carbon dioxide sequestration capacity of the area to be evaluated.
[0065] In this embodiment, the effective carbon dioxide sequestration capacity is defined as the carbon dioxide sequestration capacity after considering the reservoir effectiveness based on the theoretical carbon dioxide sequestration capacity.
[0066] In one embodiment, step S140 may include:
[0067] Based on the geological data of the effective reservoir, the effective area, effective reservoir thickness, and effective porosity of the effective reservoir for carbon dioxide sequestration at the site level are obtained.
[0068] The effective carbon dioxide storage capacity of the area to be evaluated is obtained based on the effective area of the effective reservoir for carbon dioxide storage, the effective reservoir thickness for carbon dioxide storage, and the effective porosity of the reservoir for carbon dioxide storage.
[0069] The expression for the effective carbon dioxide sequestration capacity is as follows:
[0070] M ef =ρ CO2 ×A e ×H e ×φ e / 10 6 ,
[0071] In the expression for effective carbon dioxide sequestration, M ef Mt, ρ represents the effective carbon dioxide sequestration capacity of the area to be evaluated. CO2 This represents the density of carbon dioxide under formation conditions, expressed in kg / m³. 3 A e This represents the effective area (km²) of a site-level reservoir capable of storing carbon dioxide. 2 H e The effective reservoir thickness (m) and φ represent the site-level energy storage capacity for carbon dioxide in the effective reservoir. e This represents the effective porosity of a site-level energy-capable carbon dioxide reservoir, expressed as %.
[0072] Step S150: Based on the carbon dioxide sequestration efficiency coefficient and the effective carbon dioxide sequestration amount of the area to be evaluated, obtain the technical carbon dioxide sequestration amount of the area to be evaluated.
[0073] In this embodiment, the technical carbon dioxide sequestration capacity is defined as the carbon dioxide sequestration capacity of the reservoir under existing process technology conditions, based on the effective carbon dioxide sequestration capacity.
[0074] The expression for the technical carbon dioxide sequestration capacity is as follows:
[0075] M tc =M ef ×K u ,
[0076] In the expression for the amount of carbon dioxide sequestration in technology, M tc This represents the technical carbon dioxide sequestration capacity of the area to be evaluated. In this embodiment, it refers to the amount of carbon dioxide that can be mobilized and sequestered in the deep reservoir, Mt, M ef The effective carbon dioxide sequestration capacity of the area to be evaluated is expressed in Mt and K. u The carbon dioxide sequestration efficiency coefficient of the area to be evaluated is expressed as %.
[0077] Step S160: Based on the economic efficiency coefficient of carbon dioxide sequestration and the technical carbon dioxide sequestration capacity of the area to be evaluated, obtain the economic carbon dioxide sequestration capacity of the area to be evaluated.
[0078] In this embodiment, the economic carbon dioxide sequestration capacity is defined as the carbon dioxide sequestration capacity based on the technical carbon dioxide sequestration capacity, taking into account policy, legal and regulatory conditions, and economic conditions.
[0079] The expression for economic carbon dioxide sequestration is as follows:
[0080] M ec =M tc ×E e ,
[0081] In the expression for economic carbon dioxide sequestration, M ec This represents the economic carbon dioxide sequestration (CO2) of the area to be evaluated. In this embodiment, it refers to the economic CO2 sequestration in deep reservoirs, Mt, M tc The technical carbon dioxide sequestration capacity of the area to be evaluated is expressed in Mt and E. e This represents the economic efficiency coefficient of carbon dioxide sequestration in the area to be evaluated, expressed as %.
[0082] The carbon dioxide geological sequestration classification and evaluation method provided by this invention combines geological data of the area to be evaluated, considers the carbon dioxide sequestration efficiency coefficient affected by technological conditions, and the carbon dioxide sequestration economic efficiency coefficient affected by policies, laws and regulations, and economic conditions, and conducts a progressively progressive evaluation of the carbon dioxide sequestration capacity of the area to be evaluated (see [link to relevant documentation]). Figure 2 This method can more objectively and systematically evaluate the amount of carbon dioxide geological sequestration, greatly improve the accuracy of the evaluation of carbon dioxide geological sequestration, and provide effective and reliable data guidance for the development of carbon dioxide geological sequestration work.
[0083] The carbon dioxide geological sequestration classification and evaluation system provided by the present invention is described below. The carbon dioxide geological sequestration classification and evaluation system described below can be referred to in correspondence with the carbon dioxide geological sequestration classification and evaluation method described above.
[0084] Reference Figure 3 The present invention provides a system for grading and evaluating geological carbon dioxide reserves, which may include:
[0085] The data acquisition module is used to: acquire geological data, carbon dioxide sequestration efficiency coefficient, and carbon dioxide sequestration economic efficiency coefficient of the area to be evaluated;
[0086] The first evaluation module is used to: obtain the theoretical carbon dioxide sequestration capacity of the area to be evaluated based on the geological data of the area to be evaluated;
[0087] The data processing module is used to: determine the effective reservoirs in the area to be evaluated based on the geological data of the area to be evaluated, and obtain the geological data of the effective reservoirs;
[0088] The second evaluation module is used to: obtain the effective carbon dioxide sequestration capacity of the area to be evaluated based on the geological data of the effective reservoir;
[0089] The third evaluation module is used to: obtain the technical carbon dioxide sequestration capacity of the area to be evaluated based on the carbon dioxide sequestration efficiency coefficient and the effective carbon dioxide sequestration capacity of the area to be evaluated.
[0090] The fourth evaluation module is used to: obtain the economic carbon dioxide sequestration capacity of the area to be evaluated based on the economic efficiency coefficient of carbon dioxide sequestration and the technical carbon dioxide sequestration capacity of the area to be evaluated.
[0091] In one implementation, the first evaluation module may include:
[0092] The first data acquisition submodule is used to: obtain the total reservoir area, reservoir flattening thickness, average reservoir porosity, and carbon dioxide density under formation conditions of the area to be evaluated based on the geological data of the area to be evaluated.
[0093] The first calculation submodule is used to: obtain the theoretical carbon dioxide sequestration capacity of the area to be evaluated based on the total reservoir area, reservoir flattening thickness, average reservoir porosity, and carbon dioxide density under formation conditions.
[0094] In one implementation, the second evaluation module may include:
[0095] The second data acquisition submodule is used to: obtain the effective area, effective reservoir thickness, and effective porosity of the effective reservoir for site-level carbon dioxide sequestration based on the geological data of the effective reservoir.
[0096] The second calculation submodule is used to: obtain the effective carbon dioxide storage capacity of the area to be evaluated based on the effective area of the effective reservoir for carbon dioxide storage, the effective reservoir thickness for carbon dioxide storage, and the effective porosity of the reservoir for carbon dioxide storage.
[0097] Figure 4 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 4 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 can call logical instructions in the memory 830 to execute a method for classifying and evaluating carbon dioxide geological reserves, which includes:
[0098] Obtain geological data, carbon dioxide sequestration efficiency coefficient, and carbon dioxide sequestration economic efficiency coefficient for the area to be evaluated.
[0099] Based on the geological data of the area to be evaluated, the theoretical carbon dioxide sequestration capacity of the area to be evaluated is obtained;
[0100] Based on the geological data of the area to be evaluated, the effective reservoirs in the area to be evaluated are determined, and the geological data of the effective reservoirs are obtained.
[0101] Based on the geological data of the effective reservoirs, the effective carbon dioxide sequestration capacity of the area to be evaluated is obtained;
[0102] Based on the carbon dioxide sequestration efficiency coefficient and the effective carbon dioxide sequestration capacity of the area to be evaluated, the technical carbon dioxide sequestration capacity of the area to be evaluated is obtained.
[0103] Based on the economic efficiency coefficient of carbon dioxide sequestration and combined with the technical carbon dioxide sequestration capacity of the area to be evaluated, the economic carbon dioxide sequestration capacity of the area to be evaluated is obtained.
[0104] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
[0105] On the other hand, the present invention also provides a computer program product, the computer program product comprising a computer program that can be stored on a non-transitory computer-readable storage medium, wherein when the computer program is executed by a processor, the computer is able to execute the carbon dioxide geological sequestration classification and evaluation method provided by the above methods, the method comprising:
[0106] Obtain geological data, carbon dioxide sequestration efficiency coefficient, and carbon dioxide sequestration economic efficiency coefficient for the area to be evaluated.
[0107] Based on the geological data of the area to be evaluated, the theoretical carbon dioxide sequestration capacity of the area to be evaluated is obtained;
[0108] Based on the geological data of the area to be evaluated, the effective reservoirs in the area to be evaluated are determined, and the geological data of the effective reservoirs are obtained.
[0109] Based on the geological data of the effective reservoirs, the effective carbon dioxide sequestration capacity of the area to be evaluated is obtained;
[0110] Based on the carbon dioxide sequestration efficiency coefficient and the effective carbon dioxide sequestration capacity of the area to be evaluated, the technical carbon dioxide sequestration capacity of the area to be evaluated is obtained.
[0111] Based on the economic efficiency coefficient of carbon dioxide sequestration and combined with the technical carbon dioxide sequestration capacity of the area to be evaluated, the economic carbon dioxide sequestration capacity of the area to be evaluated is obtained.
[0112] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the carbon dioxide geological sequestration classification and evaluation method provided by the methods described above, the method comprising:
[0113] Obtain geological data, carbon dioxide sequestration efficiency coefficient, and carbon dioxide sequestration economic efficiency coefficient for the area to be evaluated.
[0114] Based on the geological data of the area to be evaluated, the theoretical carbon dioxide sequestration capacity of the area to be evaluated is obtained;
[0115] Based on the geological data of the area to be evaluated, the effective reservoirs in the area to be evaluated are determined, and the geological data of the effective reservoirs are obtained.
[0116] Based on the geological data of the effective reservoirs, the effective carbon dioxide sequestration capacity of the area to be evaluated is obtained;
[0117] Based on the carbon dioxide sequestration efficiency coefficient and the effective carbon dioxide sequestration capacity of the area to be evaluated, the technical carbon dioxide sequestration capacity of the area to be evaluated is obtained.
[0118] Based on the economic efficiency coefficient of carbon dioxide sequestration and combined with the technical carbon dioxide sequestration capacity of the area to be evaluated, the economic carbon dioxide sequestration capacity of the area to be evaluated is obtained.
[0119] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.
[0120] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.
[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A method for classifying and evaluating geological carbon dioxide reserves, characterized in that, include: Obtain geological data, carbon dioxide sequestration efficiency coefficient, and carbon dioxide sequestration economic efficiency coefficient for the area to be evaluated. Based on the geological data of the area to be evaluated, the theoretical carbon dioxide sequestration capacity of the area to be evaluated is obtained; Based on the geological data of the area to be evaluated, the effective reservoirs in the area to be evaluated are determined, and the geological data of the effective reservoirs are obtained. Based on the geological data of the effective reservoirs, the effective carbon dioxide sequestration capacity of the area to be evaluated is obtained; Based on the carbon dioxide sequestration efficiency coefficient and the effective carbon dioxide sequestration capacity of the area to be evaluated, the technical carbon dioxide sequestration capacity of the area to be evaluated is obtained. Based on the economic efficiency coefficient of carbon dioxide sequestration and combined with the technical carbon dioxide sequestration capacity of the area to be evaluated, the economic carbon dioxide sequestration capacity of the area to be evaluated is obtained.
2. The method for grading and evaluating carbon dioxide geological reserves according to claim 1, characterized in that, The process of obtaining the theoretical carbon dioxide sequestration capacity of the area to be evaluated based on geological data includes: Based on the geological data of the area to be evaluated, the total reservoir area, reservoir flattening thickness, average reservoir porosity, and carbon dioxide density under formation conditions are obtained. The theoretical carbon dioxide sequestration capacity of the area to be evaluated is obtained based on the total reservoir area, reservoir flattening thickness, average reservoir porosity, and carbon dioxide density under formation conditions.
3. The method for grading and evaluating carbon dioxide geological reserves according to claim 2, characterized in that, The expression for the theoretical carbon dioxide sequestration capacity is: M tr =ρ CO2 ×W×H×F / 10 6 , In the expression for theoretical carbon dioxide sequestration capacity, M tr ρ represents the theoretical carbon dioxide sequestration capacity of the area to be evaluated. CO2 Φ represents the carbon dioxide density under formation conditions, A represents the total reservoir area of the area to be evaluated, H represents the flattened thickness of the reservoir in the area to be evaluated, and Φ represents the average porosity of the reservoir in the area to be evaluated.
4. The method for grading and evaluating carbon dioxide geological reserves according to claim 2, characterized in that, The process of obtaining the effective carbon dioxide sequestration capacity of the area to be evaluated based on the geological data of the effective reservoir includes: Based on the geological data of the effective reservoir, the effective area, effective reservoir thickness, and effective porosity of the effective reservoir for carbon dioxide sequestration at the site level are obtained. The effective carbon dioxide storage capacity of the area to be evaluated is obtained based on the effective area of the effective reservoir for carbon dioxide storage, the effective reservoir thickness for carbon dioxide storage, and the effective porosity of the reservoir for carbon dioxide storage.
5. The method for grading and evaluating carbon dioxide geological reserves according to claim 4, characterized in that, The expression for effective carbon dioxide sequestration capacity is: M ef =ρ CO2 ×A e ×H e ×F e / 10 6 , In the expression for effective carbon dioxide sequestration, M ef ρ represents the effective carbon dioxide sequestration capacity of the area to be evaluated. CO2 A represents the carbon dioxide density under geological conditions. e H represents the effective area of the site-level reservoir capable of storing carbon dioxide. e Φ represents the effective reservoir thickness at the site level capable of storing carbon dioxide. e This indicates the effective porosity of a site-level energy storage carbon dioxide reservoir.
6. The method for grading and evaluating carbon dioxide geological reserves according to claim 4, characterized in that, The expression for the technical carbon dioxide sequestration capacity is: M tc =M ef ×K u , In the expression for the amount of carbon dioxide sequestration in technology, M tc M represents the technical carbon dioxide sequestration capacity of the area to be evaluated. ef K represents the effective carbon dioxide sequestration capacity of the area to be evaluated. u This represents the carbon dioxide sequestration efficiency coefficient of the area to be evaluated.
7. The method for grading and evaluating geological carbon dioxide reserves according to claim 6, characterized in that, The expression for economic carbon dioxide sequestration capacity is: M ec =M tc ×E e , In the expression for economic carbon dioxide sequestration, M ec M represents the economic carbon dioxide sequestration capacity of the area to be evaluated. tc E represents the technical carbon dioxide sequestration capacity of the area to be evaluated. e This represents the economic efficiency coefficient of carbon dioxide sequestration in the area to be evaluated.
8. A system for classifying and evaluating geological carbon dioxide reserves, characterized in that, include: The data acquisition module is used to: acquire geological data, carbon dioxide sequestration efficiency coefficient, and carbon dioxide sequestration economic efficiency coefficient of the area to be evaluated; The first evaluation module is used to: obtain the theoretical carbon dioxide sequestration capacity of the area to be evaluated based on the geological data of the area to be evaluated; The data processing module is used to: determine the effective reservoirs in the area to be evaluated based on the geological data of the area to be evaluated, and obtain the geological data of the effective reservoirs; The second evaluation module is used to: obtain the effective carbon dioxide sequestration capacity of the area to be evaluated based on the geological data of the effective reservoir; The third evaluation module is used to: obtain the technical carbon dioxide sequestration capacity of the area to be evaluated based on the carbon dioxide sequestration efficiency coefficient and the effective carbon dioxide sequestration capacity of the area to be evaluated. The fourth evaluation module is used to: obtain the economic carbon dioxide sequestration capacity of the area to be evaluated based on the economic efficiency coefficient of carbon dioxide sequestration and the technical carbon dioxide sequestration capacity of the area to be evaluated.
9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the method for classifying and evaluating the geological reserves of carbon dioxide as described in any one of claims 1 to 7.
10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the method for classifying and evaluating the geological reserves of carbon dioxide as described in any one of claims 1 to 7.