Coalbed gas and coal underground gasification coordinated development area selection evaluation method and device
By acquiring data related to coalbed methane and underground coal gasification, an evaluation framework and indicator system were constructed, solving the problem that existing technologies cannot simultaneously evaluate the selection of coalbed methane and underground coal gasification areas, and realizing the geological selection evaluation for the coordinated development of coalbed methane and underground coal gasification.
Patent Information
- Application Number
- CN202410818576.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-12-26
AI Technical Summary
Existing technologies cannot establish a complete evaluation index system for the coordinated development of coalbed methane and underground coal gasification, nor can they simultaneously consider the geological selection evaluation for coalbed methane development and underground coal gasification development.
By acquiring data related to coalbed methane and underground coal gasification, a basic framework for evaluating the coordinated development of coalbed methane and underground coal gasification is constructed, including geological, geophysical, and chemical data. An evaluation index system that takes into account the exploitability of both is established, and quantitative analysis and verification are carried out.
The geological selection evaluation for the coordinated development of coalbed methane and underground coal gasification has been realized, forming an evaluation system with interrelationships and synergistic effects, ensuring the scientific nature and comprehensiveness of the evaluation.
Smart Images

Figure CN121212866A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of resource development area selection technology, and in particular to a method and apparatus for evaluating the coordinated development of coalbed methane and underground coal gasification areas. Background Technology
[0002] Coalbed methane development and underground coal gasification are important sources of coal-based natural gas production in my country. Coalbed methane development has significant economic and social implications in improving the efficiency of clean energy utilization, reducing coal mine gas risks, and mitigating greenhouse gas emissions from coal mines. Underground coal gasification transforms traditional physical coal mining into chemical coal mining, which can improve the utilization rate of coal resources.
[0003] In actual production, it has been found that the overall output of coalbed methane from single mining is relatively low, and underground coal gasification also has the problem of excessively high costs. However, due to the existence of "groundwater dewatering effect of coalbed methane development", "desorption effect of thermal effects of underground coal gasification" and "pressure relief effect of mining in underground coal gasification", the coordinated development of underground coal gasification and coalbed methane can achieve mutual promotion.
[0004] In existing technologies, the method for selecting geological sweet spots for coalbed methane in deep structurally complex areas, as disclosed in publication number "CN117345224A", is significantly more innovative than previous techniques. While previous methods primarily focused on qualitative or semi-quantitative analysis of influencing factors such as faults, folds, and coal structure in evaluating favorable coalbed methane areas, this new method addresses these limitations. It provides a qualitative characterization of structural geological conditions, hydrodynamic geological conditions, and coal structure, thus aiding in the selection and analysis of geological sweet spots for coalbed methane in structurally complex areas.
[0005] However, this method can only perform geological zone selection analysis for coalbed methane and cannot simultaneously consider the problems faced in the geological zone selection evaluation of coalbed methane development and underground coal gasification development. Therefore, it cannot establish a complete evaluation index system for the coordinated development of coalbed methane and underground coal gasification. Summary of the Invention
[0006] The main objective of this invention is to provide a method for evaluating the selection of areas for the coordinated development of coalbed methane and underground coal gasification, aiming to solve the technical problem that existing technologies cannot establish a complete evaluation index system for the coordinated development of coalbed methane and underground coal gasification.
[0007] To achieve the above objectives, the present invention provides a method for evaluating the selection of areas for the coordinated development of coalbed methane and underground coal gasification. The method includes: acquiring data related to coalbed methane and underground coal gasification; receiving data acquired by the data acquisition module; and constructing a basic framework for evaluating the selection of areas for the coordinated development of coalbed methane and underground coal gasification.
[0008] The basic framework constructed by the building module is received, and key indicators for the selected areas for coordinated development of coalbed methane and underground coal gasification are evaluated.
[0009] Optionally, acquiring data related to coalbed methane and underground coal gasification includes: acquiring geological data; acquiring geophysical data; and acquiring chemical data.
[0010] Optionally, the acquisition of geological data includes: obtaining local underground structure and local rock strata information based on stratum drilling and core sampling; and investigating the topography, geomorphology and stratigraphic distribution characteristics of the surface to obtain relevant data.
[0011] Optionally, the acquisition of geophysical data includes: acquiring information on the underground structure and rock strata of the entire region based on the local underground structure, the local rock strata information, and the propagation characteristics of seismic waves underground; using electromagnetic fields to measure the conductivity of underground materials to determine the underground structure of the entire region; and measuring changes in gravity and magnetic field at the Earth's surface to acquire magnetic information on the density of underground rock strata.
[0012] Optionally, the acquisition of chemical data includes: sampling groundwater and surface water and analyzing their chemical composition to assess the impact of groundwater on coalbed methane and underground coal gasification; collecting underground gas samples and analyzing their composition to obtain the gas characteristics of coalbed methane and underground coal gasification.
[0013] Optionally, the step of receiving data acquired by the data acquisition module and constructing a basic framework for evaluating the coordinated development of coalbed methane and underground coal gasification in selected areas includes: obtaining the evaluation objectives for the evaluation of the coordinated development of coalbed methane and underground coal gasification in selected areas, and obtaining the geographical and time scope of the evaluation, as well as the relevant technical, economic, and environmental requirements; developing a plan to acquire necessary data from different data sources and formulating a specific data acquisition scheme; acquiring geological, geophysical, and chemical data; cleaning and verifying the collected data, and integrating data from different data sources to establish a consistent dataset; acquiring the key indicators for evaluating the coordinated development of coalbed methane and underground coal gasification in selected areas, including geological conditions, gas reserves, and environmental risks, organizing these evaluation indicators into a systematic system, and assigning weights to each evaluation indicator; establishing an evaluation model and constructing an evaluation model based on the evaluation method for quantitative analysis; verifying the evaluation model and adjusting the systematic system according to the verification results to make it conform to the actual situation; and writing an evaluation report.
[0014] Optionally, the specific objectives of the evaluation of the selected areas for the coordinated development of coalbed methane and underground coal gasification include resource potential assessment and environmental risk assessment.
[0015] Optionally, the specific scheme for data acquisition includes the selection of sampling points, the frequency of data acquisition, and the method of data acquisition.
[0016] Optionally, the evaluation report includes the evaluation methods, data sources, key results, conclusions, and recommendations.
[0017] Optionally, the key indicators for evaluating the selected areas for coordinated development of coalbed methane and underground coal gasification include: obtaining information on coal quality, formation pressure, and permeability related to coalbed methane and underground coal gasification; obtaining suggestions from geologists, geophysicists, and engineers regarding the evaluation indicators and forming an expert consensus; selecting representative and key indicators from the obtained information; developing an evaluation indicator system for comprehensive analysis and comparison, and assigning weights to each indicator; constructing an evaluation model based on the nature of the evaluation indicators for quantitative analysis; verifying the accuracy of the evaluation results based on relevant data from the actual engineering implementation process on-site, and adjusting the evaluation indicator system according to the verification results to conform to the actual situation; and outputting an evaluation indicator determination report.
[0018] Optionally, the step of constructing an evaluation model based on the properties of the evaluation indicators for quantitative analysis includes: determining the degree of influence and correlation of each evaluation indicator based on the properties of the evaluation indicators; constructing an evaluation model based on the degree of influence and correlation of each evaluation indicator and the expert consensus; and performing quantitative analysis.
[0019] Furthermore, to achieve the above objectives, this application also provides an evaluation device for the coordinated development of coalbed methane and underground coal gasification, the device comprising: a data acquisition module for acquiring data related to coalbed methane and underground coal gasification; a construction module for receiving the data acquired by the data acquisition module and constructing a basic framework for evaluating the coordinated development of coalbed methane and underground coal gasification; and an evaluation index determination module for receiving the basic framework constructed by the construction module and determining key indicators for the coordinated development of coalbed methane and underground coal gasification.
[0020] Optionally, the building module generates a complete evaluation system, which includes a systematic analysis and structure of the data collected by the data acquisition module.
[0021] Optionally, the results of the evaluation index determination module are fed back to the construction module to optimize the evaluation process.
[0022] The method and system for evaluating the coordinated development of coalbed methane and underground coal gasification provided in this application have the following advantages:
[0023] 1. This application addresses the issue of geological site selection for the coordinated development of coalbed methane and underground coal gasification, which cannot be resolved by a single evaluation method. By acquiring data related to coalbed methane and underground coal gasification, a basic framework for evaluating the site selection for the coordinated development of coalbed methane and underground coal gasification is constructed. An evaluation index system for the site selection of coordinated development of coalbed methane and underground coal gasification, taking into account the recoverability of both, is established, thus realizing the geological site selection for the coordinated development of coalbed methane and underground coal gasification.
[0024] 2. This application fully considers the synergistic development promotion effect, realizes the organic coupling of various types of indicators, and forms an evaluation system for coalbed methane development and underground coal gasification development that is interconnected and synergistic;
[0025] 3. This application utilizes a data acquisition module to provide basic data for the evaluation system, a construction module to integrate this data into an organic system, and an evaluation index determination module to establish specific evaluation standards on this basis, forming an interrelated and synergistic evaluation system that ensures the scientific nature and comprehensiveness of the evaluation system. Attached Figure Description
[0026] Figure 1 A flowchart of the evaluation method for the coordinated development of coalbed methane and underground coal gasification provided in this application embodiment;
[0027] Figure 2 This is a structural block diagram of the coalbed methane and underground coal gasification coordinated development area evaluation device provided in the embodiments of this application.
[0028] Explanation of reference numerals in the attached figures:
[0029] 300 - Evaluation device for coordinated development of coalbed methane and underground coal gasification, 310 - Data acquisition module, 320 - Construction module, 330 - Evaluation index determination module.
[0030] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0031] It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the application. Rather, these embodiments are provided to make the disclosure more thorough and complete, and to fully convey the scope of the disclosure to those skilled in the art.
[0032] Currently, the traditional geological selection evaluation system for coalbed methane only conducts geological evaluations of coalbed methane enrichment or recoverability, and the traditional geological selection evaluation system for underground coal gasification only focuses on underground coal gasification. The aforementioned traditional geological selection evaluation systems cannot take into account the geological selection evaluation required for the coordinated development of coalbed methane and underground coal gasification.
[0033] To address the aforementioned technical problems, embodiments of this application provide a method for evaluating the selection of areas for the coordinated development of coalbed methane and underground coal gasification, such as... Figure 1 As shown, the method may include the following steps:
[0034] S10: Obtain data related to coalbed methane and underground coal gasification.
[0035] In an exemplary embodiment, step S10 may include:
[0036] S110, acquire geological data;
[0037] S120, acquires geophysical data;
[0038] S130, acquire chemical data.
[0039] Furthermore, in an exemplary embodiment, step S110 may include:
[0040] S111, based on the method of formation drilling and core collection, obtains information on local underground structures and local rock strata;
[0041] S112 involves investigating the topography, landforms, and stratigraphic distribution characteristics of the earth's surface to obtain relevant data.
[0042] In an exemplary embodiment, step S120 may include:
[0043] S121, Based on the local underground structure, the local rock strata information, and the propagation characteristics of seismic waves underground, obtain the underground structure and rock strata information of the entire region;
[0044] S122, using electromagnetic fields to measure the conductivity of underground materials to determine the underground structure of the entire area;
[0045] S123 measures changes in gravity and magnetic field at the Earth's surface to obtain magnetic information about the density of underground rock strata.
[0046] Specifically, in step S122, different rocks and their conductivity are described by drilling core samples to establish a relationship. Then, based on this relationship, the conductivity of underground materials is measured using electromagnetic fields to determine the corresponding underground structure.
[0047] In an exemplary embodiment, step S130 may include:
[0048] S131, sampling groundwater and surface water and analyzing their chemical composition to assess the impact of groundwater on coalbed methane and underground coal gasification;
[0049] S132, collect underground gas samples and analyze their composition to obtain gas characteristics of coalbed methane and underground coal gasification.
[0050] This technical system comprehensively considers the problems faced in the geological selection and evaluation of coalbed methane development and underground coal gasification development. It not only considers the coalbed methane resource factors, reservoir factors, and preservation factors in the geological selection of coalbed methane sites, but also considers the coal quality conditions, surrounding rock conditions, local structural conditions, hydrogeological conditions, environmental geological conditions, and gasifier sealing conditions in the selection of underground coal gasification furnace sites. It establishes a complete evaluation index system for the coordinated development of coalbed methane and underground coal gasification, laying a geological foundation for actual coordinated production and development.
[0051] S20, receive the data acquired by the data acquisition module, and construct a basic framework for the evaluation of the selection area for coordinated development of coalbed methane and underground coal gasification.
[0052] In an exemplary embodiment, step S20 may include:
[0053] S210, to obtain the specific objectives of the evaluation of the coordinated development of coalbed methane and underground coal gasification, and to obtain the geographical and time scope of the evaluation, as well as the relevant technical, economic and environmental requirements.
[0054] S220: A plan for acquiring necessary data from different data sources, and a specific data collection scheme.
[0055] S230, acquiring geological, geophysical and chemical data;
[0056] S240 cleans and validates the collected data, integrating data from different data sources to establish a consistent dataset;
[0057] S250 acquires key indicators for evaluating the coordinated development of coalbed methane and underground coal gasification in selected areas, including geological conditions, gas reserves, and environmental risks, and organizes these evaluation indicators into a systematic framework.
[0058] S260 assigns weights to each evaluation indicator, uses appropriate models or methods to conduct a comprehensive analysis of each indicator, and obtains the final evaluation result.
[0059] S270: Visualize the evaluation results using charts and maps, and write an evaluation report.
[0060] Furthermore, the specific objectives of the evaluation of the coordinated development of coalbed methane and underground coal gasification include resource potential assessment and environmental risk assessment; the specific data collection plan includes the selection of sampling points, the frequency and method of data collection; and the evaluation report includes the evaluation methods, data sources, key results, conclusions and recommendations.
[0061] S30, receive the basic framework constructed by the construction module, and evaluate the key indicators of the selected area for coordinated development of coalbed methane and underground coal gasification.
[0062] In an exemplary embodiment, step S30 may specifically include the following steps:
[0063] S310: Obtain recommendations from geologists, geophysicists, and engineers regarding the evaluation indicators and reach an expert consensus;
[0064] S320: Select representative and key indicators from the acquired information;
[0065] S330, Establish an evaluation index system for comprehensive analysis and comparison, and assign weights to each index;
[0066] S340, Based on the nature of the evaluation indicators, construct an evaluation model for quantitative analysis;
[0067] S350 verifies the accuracy of the evaluation results based on relevant data from the actual engineering implementation process on site, and adjusts the evaluation index system according to the verification results to make it conform to the actual situation.
[0068] S360 outputs a report on the determination of evaluation indicators.
[0069] Specifically, experts in geology, geophysics, and engineering refer to individuals who have in-depth knowledge of their field and possess some understanding of related fields, even seemingly unrelated but actually relevant ones, and who require at least eight years of experience in that field. Expert consensus refers to the agreement reached among experts in geology, geophysics, and engineering regarding evaluation indicators.
[0070] In an exemplary embodiment, step S340 may specifically include the following steps:
[0071] S341, Based on the nature of the evaluation indicators, determine the degree of influence and correlation of each of the evaluation indicators;
[0072] S342, construct an evaluation model based on the degree of influence and correlation of each evaluation indicator and the expert consensus;
[0073] S343, perform quantitative analysis.
[0074] This application provides a method for evaluating the selection of sites for the coordinated development of coalbed methane and underground coal gasification. By acquiring data related to coalbed methane and underground coal gasification, a basic framework for evaluating the selection of sites for the coordinated development of coalbed methane and underground coal gasification is constructed. Based on this framework, key indicators for evaluating the selection of sites for the coordinated development of coalbed methane and underground coal gasification are evaluated. A site selection evaluation index system for the coordinated mining of coalbed methane and underground coal gasification that takes into account the exploitability of both is established, thereby realizing the geological selection of sites for the coordinated development of coalbed methane and underground coal gasification.
[0075] Based on the above embodiments, refer to Figure 2 Another embodiment of this application also provides a selection evaluation device for the coordinated development of coalbed methane and underground coal gasification. The selection evaluation device 300 for the coordinated development of coalbed methane and underground coal gasification may include the following modules:
[0076] Data acquisition module 310 is used to acquire data related to coalbed methane and underground coal gasification;
[0077] The construction module 320 is used to receive the data acquired by the data acquisition module and to construct a basic framework for evaluating the coordinated development of coalbed methane and underground coal gasification.
[0078] The evaluation index determination module 330 is used to receive the basic framework constructed by the construction module, as well as the key indicators for determining the selection area for coordinated development of coalbed methane and underground coal gasification.
[0079] Specifically, the working steps of the construction module include:
[0080] Demand analysis and definition are conducted to determine the specific objectives of the evaluation of the coordinated development of coalbed methane and underground coal gasification, including resource potential assessment, environmental risk assessment, determination of the geographical and time scope of the evaluation, and related technical, economic, and environmental requirements.
[0081] Data collection planning involves determining a plan to obtain necessary data from different data sources, including but not limited to geological surveys, geophysical exploration, and chemical analysis, and developing specific data collection schemes, including the selection of sampling points, the frequency of data collection, and methods.
[0082] Data collection involves conducting field surveys and laboratory analysis activities according to the data collection plan to obtain the necessary geological, geophysical, and chemical data.
[0083] Data processing and integration involves cleaning and validating the collected data, and integrating data from different data sources to establish a consistent dataset.
[0084] The evaluation system framework design, based on the needs analysis, identifies the key indicators for evaluating the selected areas for the coordinated development of coalbed methane and underground coal gasification, and organizes these evaluation indicators into a systematic framework.
[0085] Weighting and comprehensive analysis: Assign weights to each evaluation indicator, use appropriate models or methods to conduct comprehensive analysis of each indicator, and obtain the final evaluation result.
[0086] Results presentation and reporting: Visualize the evaluation results using charts and maps, and write detailed evaluation reports, including evaluation methods, data sources, key results, conclusions, and recommendations.
[0087] Furthermore, the specific steps of the evaluation index determination module include:
[0088] Demand analysis defines the evaluation objectives for the coordinated development of coalbed methane and underground coal gasification in selected areas, including determining resource potential, assessing feasibility, reducing environmental risks, defining the geographical and time scope of the evaluation, and considering various factors.
[0089] Literature review: Collect information on coal quality, formation pressure, and permeability related to coalbed methane and underground coal gasification through literature and research reports; review industry standards and specifications; and understand the evaluation indicators commonly used in the development of coalbed methane and underground coal gasification.
[0090] Expert consultation: Consult with geologists, geophysicists, and engineers to obtain their suggestions and opinions on evaluation indicators, and strive to reach an expert consensus.
[0091] Key indicators were identified by selecting the most representative and critical indicators for evaluation from the collected information, including coalbed methane content, formation permeability, and groundwater quality, ensuring that different aspects, including technical feasibility, economic benefits, and environmental friendliness, were taken into account.
[0092] Develop an evaluation index system, organize the identified key indicators into a structured system for comprehensive analysis and comparison, and assign weights to each indicator;
[0093] Establish an evaluation model, select appropriate evaluation methods based on the nature of the evaluation indicators, including mathematical models and statistical analysis, and construct an evaluation model that can comprehensively consider various evaluation indicators for quantitative analysis;
[0094] Results verification and adjustment: The evaluation model is verified using actual data. Based on the verification results, the evaluation index system is adjusted to conform to the actual situation.
[0095] Documentation and Reporting: Compile detailed evaluation metrics reports, including the rationale for the selected metrics, the process of determining the weights, and the model building process. Submit the reports to relevant stakeholders, including the project team, decision-makers, and potential investors.
[0096] In an exemplary embodiment, the building module generates a complete evaluation system, which includes a systematic analysis and structure of the data collected by the data acquisition module.
[0097] In an exemplary embodiment, the results of the evaluation index determination module are fed back to the construction module to optimize the evaluation process.
[0098] In this embodiment of the invention, the data acquisition module provides the basic data for the evaluation system, the construction module integrates these data into an organic system, and the evaluation index determination module establishes specific evaluation standards on this basis, forming an interrelated and synergistic evaluation system, which ensures the scientific nature and comprehensiveness of the evaluation system.
[0099] In the description of this application, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0100] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0101] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.
[0102] 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 units can be selected to achieve the purpose of this embodiment according to actual needs.
[0103] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.
[0104] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion 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 this application. 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] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, 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 this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.
[0106] Furthermore, although the operations of the method of this application are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.
Claims
1. A method for evaluating the selection of areas for the coordinated development of coalbed methane and underground coal gasification, characterized in that, The evaluation method for selecting areas for coordinated development of coalbed methane and underground coal gasification includes: Acquire data related to coalbed methane and underground coal gasification; Receive the data acquired by the data acquisition module and construct a basic framework for the evaluation of the coordinated development of coalbed methane and underground coal gasification. The basic framework constructed by the building module is received, and key indicators for the selected areas for coordinated development of coalbed methane and underground coal gasification are evaluated.
2. The evaluation method for coordinated development of coalbed methane and underground coal gasification according to claim 1, characterized in that, The acquisition of data related to coalbed methane and underground coal gasification includes: Obtain geological data; Acquire geophysical data; Obtain chemical data.
3. The evaluation method for coordinated development of coalbed methane and underground coal gasification according to claim 2, characterized in that, The acquisition of geological data includes: Information on local underground structures and local rock strata is obtained through formation drilling and core sampling. The investigation focuses on the topography, landforms, and stratigraphic distribution characteristics of the Earth's surface to obtain relevant data.
4. The evaluation method for coordinated development of coalbed methane and underground coal gasification according to claim 3, characterized in that, The acquisition of geophysical data includes: Based on the local underground structure, the local rock strata information, and the propagation characteristics of seismic waves underground, the underground structure and rock strata information of the entire region are obtained; Electromagnetic fields are used to measure the conductivity of underground materials to determine the underground structure of the entire area. By measuring changes in gravity and magnetic field at the Earth's surface, magnetic information about the density of underground rock strata can be obtained.
5. The evaluation method for coordinated development of coalbed methane and underground coal gasification according to claim 2, characterized in that, The acquisition of chemical data includes: Groundwater and surface water were sampled and their chemical composition was analyzed to assess the impact of groundwater on coalbed methane and underground coal gasification. By collecting underground gas samples and analyzing their composition, the gas characteristics of coalbed methane and underground coal gasification can be obtained.
6. The method for selecting and evaluating areas for coordinated development of coalbed methane and underground coal gasification according to claim 1, characterized in that, The process of receiving data acquired by the data acquisition module and constructing a basic framework for evaluating the coordinated development of coalbed methane and underground coal gasification includes: The evaluation objectives for the coordinated development of coalbed methane and underground coal gasification should be obtained, along with the geographical and time scope of the evaluation, as well as the relevant technical, economic, and environmental requirements. Plans for acquiring necessary data from different data sources and develop specific data collection schemes; Acquire geological, geophysical, and chemical data; The collected data is cleaned and validated, and data from different data sources is integrated to establish a consistent dataset; The key indicators for evaluating the coordinated development of coalbed methane and underground coal gasification in the selected areas are obtained, including geological conditions, gas reserves, and environmental risks. These evaluation indicators are organized into a systematic framework, and weights are assigned to each evaluation indicator. Establish an evaluation model and construct an evaluation model based on the evaluation method for quantitative analysis; The evaluation model is validated, and the systematization is adjusted according to the validation results to make it conform to the actual situation. Write an evaluation report.
7. The evaluation method for coordinated development of coalbed methane and underground coal gasification according to claim 6, characterized in that, The specific objectives of the evaluation of the selected areas for the coordinated development of coalbed methane and underground coal gasification include resource potential assessment and environmental risk assessment.
8. The evaluation method for coordinated development of coalbed methane and underground coal gasification according to claim 6, characterized in that, The specific data acquisition scheme includes the selection of sampling points, the frequency of data acquisition, and the method of data acquisition.
9. The method for evaluating the coordinated development of coalbed methane and underground coal gasification according to claim 6, characterized in that, The evaluation report includes the evaluation methods, data sources, key results, conclusions, and recommendations.
10. The method for selecting and evaluating areas for coordinated development of coalbed methane and underground coal gasification according to claim 1, characterized in that, The key indicators for evaluating the selection of areas for coordinated development of coalbed methane and underground coal gasification include: Obtain information on coal quality, formation pressure, and permeability related to coalbed methane and underground coal gasification; Obtain recommendations from geologists, geophysicists, and engineers regarding the evaluation metrics, and reach an expert consensus; Select representative and key indicators from the acquired information; Establish an evaluation index system for comprehensive analysis and comparison, and assign weights to each index; Based on the nature of the evaluation indicators, an evaluation model is constructed for quantitative analysis. The accuracy of the evaluation results is verified based on relevant data from the actual engineering implementation process on site, and the evaluation index system is adjusted according to the verification results to make it conform to the actual situation. Output a report on the determination of evaluation indicators.
11. The method for selecting and evaluating areas for coordinated development of coalbed methane and underground coal gasification according to claim 10, characterized in that, The construction of an evaluation model based on the properties of the evaluation indicators for quantitative analysis includes: Based on the nature of the evaluation indicators, determine the degree of influence and correlation of each evaluation indicator; An evaluation model is constructed based on the degree of influence and correlation of each evaluation indicator and the expert consensus. Conduct quantitative analysis.
12. A device for evaluating the coordinated development of coalbed methane and underground coal gasification, characterized in that, include: The data acquisition module is used to acquire data related to coalbed methane and underground coal gasification. The construction module is used to receive the data acquired by the data acquisition module and to construct the basic framework for evaluating the coordinated development of coalbed methane and underground coal gasification. The evaluation index determination module is used to receive the basic framework constructed by the construction module, as well as the key indicators for determining the selection area for coordinated development of coalbed methane and underground coal gasification.
13. The evaluation device for coordinated development of coalbed methane and underground coal gasification according to claim 12, characterized in that, The construction module generates a complete evaluation system, which includes the systematic analysis and structuring of the data collected by the data acquisition module.
14. The evaluation device for coordinated development of coalbed methane and underground coal gasification according to claim 12, characterized in that, The results of the evaluation index determination module are fed back to the construction module to optimize the evaluation process.
Citation Information
Patent Citations
Method for selecting coal bed gas geological dessert area in deep structure complex area
CN117345224A