Coal-bed gas field development-oriented fire-fighting design specialized examination system and examination method

Abstract

The invention discloses a coal-bed gas field development-oriented fire-fighting design specialized examination system. A multi-source specification and knowledge base management module stores and structurally processes specification provisions and constructs a specification knowledge graph; the specialized content deep analysis and information extraction module analyzes a fire-fighting design specialized text and a two-dimensional drawing, and extracts key design parameters and spatial layout information; the information fusion module carries out association fusion on extraction results to obtain a station temporary parameter library; the core review engine module executes grading and fire-fighting configuration suitability and compliance verification, risk scene compliance review and logic consistency review; and the review result generation and interaction module processes the review result, generates a structured review report and performs problem labeling on the original drawing. According to the coal-bed gas field development-oriented fire-fighting design specialized examination method, accurate and standardized examination of coal-bed gas fire-fighting design is realized by constructing a specialized knowledge base and an examination engine.

Description

Technical Field

[0001] This invention belongs to the field of safety production and computer-aided review technology for unconventional oil and gas fields, specifically involving a fire protection design review system for coalbed methane field development, and a method for fire protection design review for coalbed methane field development. Background Technology

[0002] As an important unconventional natural gas resource, coalbed methane is being developed more and more frequently on the surface. Unlike conventional natural gas, coalbed methane surface development facilities are characterized by dispersed sites, varying pressure levels, and unique process units (such as produced water treatment and low-pressure venting). Their fire protection design must comply with national standards such as the "Code for Design of Coalbed Methane Gathering and Transportation" and the "Code for Fire Protection Design of Petroleum and Natural Gas Engineering", and meet local fire protection design specifications.

[0003] Currently, the review of fire protection design specifications for coalbed methane systems relies entirely on manual labor. Reviewers face the following significant challenges: A vast knowledge base: Reviewers must memorize numerous national, industry, and local technical specifications and regulations. These specifications are frequently updated, placing a heavy burden on memorization and learning. Manual review struggles to accurately calculate and verify all technical parameters in the specification (such as hundreds of safety distances, fire water volume calculations, and combustible gas detector placement logic), easily leading to oversights and insufficient depth and precision in the review. Manual review is highly subjective and inconsistent in standards: For clauses requiring qualitative descriptions or experience-based judgment, different reviewers have varying understandings and application standards, resulting in insufficient objectivity in the review conclusions. A complete fire protection design document can be hundreds of pages long; manual review, word-by-word comparison of drawings and text, is time-consuming and inefficient.

[0004] Some existing document review tools or systems lack a deep understanding of the technological characteristics and professional standards of coalbed methane, thus failing to achieve truly automated and professional review. Therefore, developing a review system capable of deeply understanding domain knowledge and automatically performing precise reviews is urgently needed. Summary of the Invention

[0005] The purpose of this invention is to provide a fire protection design review system for coalbed methane field development, which solves the problems of strong subjectivity, time-consuming and inefficient nature of existing manual review methods and general tools in the fire protection design review of coalbed methane.

[0006] Another objective of this invention is to provide a method for reviewing fire protection design chapters for coalbed methane field development, which can deeply integrate domain knowledge and achieve automated and accurate review.

[0007] The technical solution adopted in this invention is a fire protection design review system for coalbed methane field development, comprising: Multi-source specification and knowledge base management module: Stores and structures specification clauses, and constructs specification knowledge graphs; In-depth analysis and information extraction module for fire protection design: Analyzes the fire protection design text and 2D drawings to extract key design parameters and spatial layout information; Information fusion module: It associates and fuses the extracted key design parameters and spatial layout information to obtain a temporary parameter library for the site; The core review engine module, based on the aforementioned standard knowledge graph and site temporary parameter library, performs hierarchical and fire protection configuration adaptability verification, compliance verification, risk scenario compliance review, and logical consistency review. Review Result Generation and Interaction Module: Summarizes, deduplicates, and classifies the severity levels of the review results, generates a structured review report, and marks the original drawings with issues.

[0008] The invention is further characterized in that, The multi-source standards and knowledge base management module includes structured units of standard provisions, a coalbed methane process risk database, and a site fire hazard classification and fire protection configuration rule database. The structured unit of the standard provisions is used to process national, industry and local coalbed methane fire protection design standards into machine-readable structured forms. Through natural language processing technology, the standard provisions are decomposed into a triple structure of "applicable conditions", "core parameters" and "compliance criteria", and a standard knowledge graph is constructed to establish the relationship between the standard provisions. The coalbed methane process risk database is used to store the fire hazard classification, typical accident scenarios, and key risk control measures for coalbed methane development process units. The base of rules for fire hazard classification and fire protection configuration of stations has built-in calculation logic and rules for automatically determining the fire hazard level of stations and the corresponding fire protection configuration standards based on influencing factors.

[0009] The coalbed methane development process unit includes the wellhead and venting system, compressor area, produced water tank area, gas gathering station separation area, coalbed methane booster room, and dehydration and dehydrocarbonization unit; Influencing factors include the scale of the coalbed methane processing plant, the total volume of storage tanks, the volume of a single tank, and the complexity of the process.

[0010] The in-depth analysis and information extraction module for the special article includes a text semantic understanding and parameter extraction unit and a drawing information recognition and extraction unit; The text semantic understanding and parameter extraction unit uses a pre-trained domain language model to scan and analyze fire protection texts, perform semantic role labeling and named entity recognition on the fire protection texts, identify the specific applicable battlefield type and process type of the project to be reviewed, extract key design parameters, and store them in a structured manner. Fire protection design documents are available in Word, PDF, and TXT formats. The drawing information recognition and extraction unit integrates computer vision technology to parse the uploaded two-dimensional drawings, identify equipment symbols, tag numbers, boundaries and relative positions, and extract spatial layout information.

[0011] Key design parameters include the design of the venting system, the layout and fire protection measures of the produced water treatment area, the building structure of the coalbed methane compressor room, the ventilation design, the automatic fire extinguishing and alarm system, the details of the configuration of fire extinguishing equipment in the well site area, and the relative positional relationship between the functional zones and equipment in the general layout.

[0012] The design of the venting system includes the diameter and height of the venting pipe, and its distance from the wellhead and surrounding facilities; The architectural structure of a coalbed methane compressor room includes its fire resistance rating and pressure relief area; Ventilation design includes ventilation methods and air exchange rate; Automatic fire extinguishing and alarm systems include the type of gas detector, its location, and the form of the fire alarm system.

[0013] The specific process of association and fusion is as follows: the key design parameters extracted from the text are compared with the spatial layout information extracted from the drawings, and the information is fused. If there are discrepancies between the text and drawing information during the fusion process, the drawing information shall be given priority, and the key design parameters in the text shall be given secondary priority. The temporary parameter database for the site includes equipment attributes, spatial relationships, and fire protection facility configuration information.

[0014] The core review engine module includes a sub-engine for reviewing the fire hazard classification and fire protection configuration adaptability of the site, a sub-engine for automatic compliance verification, a sub-engine for reviewing the compliance of risk scenarios, and a sub-engine for reviewing logical consistency. The four sub-engines review in sequence. The sub-engine for reviewing the fire hazard classification and fire protection configuration suitability of the site automatically calls the multi-source specification and knowledge base management module to determine the fire hazard level based on the site scale and process composition information extracted from the fire protection design chapter. Then, it compares the fire protection facility configuration described in the virtual temporary parameter library of the coalbed methane site with the fire protection configuration standard corresponding to the level in the site fire hazard classification and fire protection configuration rule library to verify the overall compliance and mark the items with insufficient or excessive configuration. The compliance automatic verification sub-engine compares the design parameters in the site temporary parameter library with the provisions in the specification knowledge graph to check whether they meet the requirements, and identifies and marks all non-compliant items. The risk scenario compliance review sub-engine conducts a special in-depth review of each unit of the coalbed methane development process based on typical accident scenarios in the coalbed methane process risk library to check whether they meet the setting requirements. Logical consistency review sub-engine: checks the consistency between the content of the special article and between the text and images, and whether there are logical contradictions between various fire protection systems and within the system.

[0015] The review results generation and interaction module includes a report generation unit and a visualization annotation and interaction unit; The report generation unit is used to summarize, deduplicate, and classify the severity levels of the review results, generate a structured review report, list the problem items, the violated normative clauses, the location of the problem, and provide modification suggestions; The visual annotation and interaction unit provides a graphical user interface that allows users to graphically highlight the locations of problems found during the review on copies of the original 2D drawings. It also allows users to confirm, supplement, and export the review results, enabling interactive review with text and graphics linkage.

[0016] Another technical solution adopted in this invention is: a method for reviewing fire protection design plans for coalbed methane field development, using the aforementioned fire protection design plan review system for coalbed methane field development, with the following steps: Step S1: Users upload fire protection design documents and related 2D drawings through the system interface, and fill in the project location information; Step S2: The multi-source standards and knowledge base management module loads and activates all applicable national, industry, and local standards and regulations based on the project's location; Step S3: The in-depth analysis and information extraction module analyzes the fire protection design document text and two-dimensional drawings in parallel, extracts key design parameters and spatial layout information, and sends them to the information fusion module for correlation and fusion to obtain the temporary parameter library of the site. Step S4: Start the core review engine for review, specifically: Step S41: Conduct a fire hazard classification and fire protection configuration suitability review for the site; Step S42: Conduct a compliance review of the normative provisions; Step S43: Conduct a specific compliance review based on risk scenarios; Step S44: Perform a logical consistency review of the graphics and text; Step S5: Review Result Generation and Interaction Module summarizes the review results from the core review engine module, performs issue deduplication and severity classification, generates and outputs the final review report with standard citations and visual annotations, presents it to the user, and supports confirmation, supplementation and export of the review results.

[0017] The beneficial effects of this invention are: Compared with existing technologies, the fire protection design review system for coalbed methane field development of the present invention has the following significant advantages and positive effects: 1) Significantly enhanced professionalism: The system is designed specifically for the coalbed methane field. Its knowledge base and review logic depth are in line with the characteristics of the industry. It can effectively handle professional problems such as release space spacing and produced water fire protection. The review depth far exceeds that of manual and general tools. 2) Revolutionary breakthrough in review efficiency: Automated review frees reviewers from tedious work of reading, comparing, and calculating, shortening review time and improving efficiency; 3) Significantly enhanced review quality and objectivity: Machine judgment based on a unified standard knowledge base avoids human oversight and subjective bias, ensuring the comprehensiveness, accuracy, and objectivity of review conclusions. Attached Figure Description

[0018] Figure 1 This is a block diagram of the connection architecture of the fire protection design review system for coalbed methane field development according to the present invention. Detailed Implementation

[0019] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0020] Example 1 The fire protection design review system for coalbed methane field development of this invention adopts a modular design and mainly includes the following core components: Multi-source specification and knowledge base management module: Stores and structures specification clauses, and constructs specification knowledge graphs; In-depth analysis and information extraction module for fire protection design: Analyzes the fire protection design text and 2D drawings to extract key design parameters and spatial layout information; Information fusion module: It associates and fuses the extracted key design parameters and spatial layout information to obtain a temporary parameter library for the site; The core review engine module, based on the aforementioned standard knowledge graph and site temporary parameter library, performs hierarchical and fire protection configuration adaptability verification, compliance verification, risk scenario compliance review, and logical consistency review. Review Result Generation and Interaction Module: Summarizes, deduplicates, and classifies the severity levels of the review results, generates a structured review report, and marks the original drawings with issues.

[0021] Example 2 Based on Example 1, the multi-source specification and knowledge base management module includes: The structured unit for standard provisions is used to machine-readable structure the national, industry, and provincial (autonomous region) coalbed methane fire protection design standards, such as the "Code for Design of Coalbed Methane Gathering and Transportation," the "Code for Fire Protection Design of Petroleum and Natural Gas Engineering," the "Code for Fire Protection Design of Buildings," and local rules for the review and acceptance of fire protection design for coalbed methane extraction. Through natural language processing technology and expert annotation, the standard provisions are decomposed into triplets of "applicable conditions" (e.g., applicable types of stations and processes), "core parameters" (e.g., specific safety distance values, fire water supply intensity, and fire extinguisher configuration standards), and "compliance criteria" (e.g., mandatory levels such as "should," "must," "must not," and "strictly prohibited"). An interconnected, semantically reasonable knowledge graph of coalbed methane fire protection standards is constructed to establish the relationships between the standard provisions.

[0022] Coalbed methane process risk database: Stores fire hazard classifications (Class A, B, and C), typical accident scenarios (such as leakage, container rupture, etc.) and key risk control measures for coalbed methane development process units.

[0023] Typical process units for coalbed methane development include, but are not limited to, wellhead and venting system, compressor area, produced water tank area, gas gathering station separation area, coalbed methane booster room, and dehydration and dehydrocarbonization unit.

[0024] Fire Hazard Classification and Fire Protection Configuration Rule Library for Sites: Built-in calculation logic and rules for automatically determining the fire hazard level of a site (e.g., from Level 5 to Level 1) and the corresponding fire protection configuration standards (e.g., whether a corporate fire station is required, the minimum effective volume of the fire water tank, the flow rate and head requirements of the fire pump, the type and quantity of mobile fire extinguishing equipment, etc.) based on factors such as the scale of the coalbed methane processing plant, the total volume of the storage tanks, the volume of the single tank, and the complexity of the process.

[0025] Example 3 Based on Example 2, the in-depth analysis and information extraction module for specific content includes: Text semantic understanding and parameter extraction unit: Using a pre-trained CLIP language model, it automatically scans and analyzes fire protection documents, performs semantic role labeling and named entity recognition on the fire protection documents, identifies the specific applicable battlefield type and process type of the project under review (such as cluster well sites, single well sites, gas gathering stations, central treatment plants, etc.), automatically extracts key design parameters closely related to fire safety, such as "fire water tank capacity 800m³", "compressor room depressurization area 0.05m² / m³", "vent pipe distance from wellhead 30m", etc., and stores them in a structured manner.

[0026] Fire protection design documents are available in Word, PDF, and TXT formats. Key design parameters include: venting system design (venting pipe diameter, height, and distance from the wellhead and surrounding facilities), layout of the produced water treatment area and fire protection measures, building structure of the coalbed methane compressor room (fire resistance rating, pressure relief area), ventilation design (ventilation method, air exchange rate), automatic fire extinguishing and alarm system (gas detector type, location, and fire alarm system type), details of fire extinguishing equipment configuration in the well site area, and the relative positions of functional zones and equipment in the overall layout.

[0027] Drawing Information Recognition and Extraction Unit: Integrating computer vision technology, it analyzes uploaded 2D general drawings, process flow diagrams, floor plans, fire protection facility diagrams, pipeline installation diagrams, explosion hazard zone diagrams, etc., identifies equipment symbols, tag numbers, boundaries and relative positions, and extracts spatial layout information.

[0028] Example 4 Based on Example 3, the information fusion module associates and integrates the key design parameters extracted from the text with the spatial layout information extracted from the drawings, and constructs a virtual temporary parameter library for coalbed methane stations that includes equipment attributes, spatial relationships, and fire protection facility configuration information in the system, serving as a unified analysis basis.

[0029] The association and fusion process involves comparing the key design parameters extracted from the text with the spatial layout information extracted from the drawings to perform information fusion. If there are discrepancies between the text and drawing information during the fusion process, the drawing information takes precedence, followed by the key design parameters in the text.

[0030] Example 5 Based on Example 4, the core review engine module includes a site fire hazard classification and fire protection configuration adaptability review sub-engine, an automatic compliance verification sub-engine, a risk scenario compliance review sub-engine, and a logical consistency review sub-engine, which review in sequence. The sub-engine for reviewing the fire hazard classification and fire protection configuration suitability of the coalbed methane plant: This sub-engine automatically calls the multi-source specification and knowledge base management module to determine the fire hazard level based on information such as the plant scale and process composition extracted from the fire protection design chapter. Subsequently, it compares the fire protection facility configuration (such as fire station, fire water volume, fire pipeline, fire extinguisher, etc.) described in the virtual temporary parameter library of the coalbed methane plant with the corresponding fire protection configuration standards in the fire hazard classification and fire protection configuration rule library of the plant, verifies the global compliance, and marks the items that are insufficient or excessive in configuration.

[0031] The automatic compliance verification sub-engine compares the design parameters in the site's temporary parameter library with the provisions in the code knowledge graph to check for compliance and identify and mark any non-compliant items. For example, when verifying the overall layout and safety distances, the extracted equipment and facility spatial layout information is used to automatically calculate the fire separation distances between various process unit areas, between equipment, and between process unit areas and auxiliary buildings such as fire pump rooms, substations, control rooms, and office buildings on a virtual two-dimensional plan. By matching the calculation results with the corresponding distance requirements in the code knowledge graph, all violations of insufficient distances are quickly identified and marked. It can also automatically verify whether the extracted "fire separation distance" is greater than the minimum value required by the code and whether the "fire water volume" meets the calculation requirements for the corresponding level of site.

[0032] Risk Scenario Compliance Review Sub-engine: Based on typical accident scenarios in the coalbed methane process risk database, this sub-engineers review logic to conduct in-depth reviews of each unit in the coalbed methane development process, checking whether they meet the required specifications. For example, in the "compressor leakage" scenario, it automatically checks whether combustible gas detectors are installed as required, whether the ventilation system meets explosion-proof requirements, and whether the fire extinguishing system is appropriately selected.

[0033] This sub-engine is a key component showcasing the system's professionalism. It conducts in-depth, specialized reviews of the core risk units within the coalbed methane development process. Wellhead and Venting System Review: Automatically verify the safe distance between the vent pipe (or flare) and wellhead equipment, access roads, station perimeter walls, and other open flame locations or important facilities to ensure that they meet the specific requirements in the "Coalbed Methane Gathering and Transportation Design Code" and assess whether the venting capacity matches the potential release volume at the wellhead.

[0034] Compressor area review: The review focuses on the building fire protection measures (fire resistance rating, fire compartmentation) of the compressor room, explosion relief measures (decompression area calculation and layout), the effectiveness of the mechanical ventilation system (whether it meets explosion-proof requirements and whether the air exchange rate is sufficient), and whether combustible gas concentration detection and high-sensitivity automatic fire extinguishing and alarm systems are installed as required. Applicable automatic fire extinguishing facilities (such as high-pressure fine water mist, clean gas fire extinguishing systems) are recommended.

[0035] Inspection of produced water tank area: Based on the analysis results of produced water characteristics, determine its fire hazard category, check whether fixed or semi-fixed foam fire extinguishing system and cooling water system are configured as required, and verify whether the safety distance between them and open flame locations, substations, office buildings and other auxiliary facilities meets the standards.

[0036] The logical consistency review sub-engine checks the consistency of the text content, both before and after the main document, and between the text and images, as well as whether there are logical inconsistencies between different fire protection systems and within the system itself. For example, it verifies whether the performance parameters of the fire pumps, such as flow rate and head, described in the text match the design pressure and flow requirements of the piping network in the drawings; it verifies whether the detector locations on the fire alarm system floor plan are consistent with the protected areas described in the text. It also verifies whether the linkage logic between the automatic fire alarm system and facilities such as ventilation, smoke extraction, and fireproof roller shutters is reasonable and complete.

[0037] Example 6 Based on Example 5, the review result generation and interaction module includes: Report generation unit: Used to summarize, deduplicate, and classify the severity levels of review results, automatically generate detailed structured review reports, accurately list the issues, violated regulatory clauses, and the location of the issues (chapter / drawing number), and provide modification suggestions.

[0038] The system automatically generates a detailed review report. The report not only clearly lists each problem found, but also precisely points out the chapter or location where the problem occurs, and directly cites the specific code name, clause number, and original text of the clause as evidence.

[0039] To enhance the report's guidance value, the system provides professional risk explanations and rectification suggestions for common issues. For example, regarding insufficient vent pipe spacing, the report will add the following explanation: "Risk Analysis: Insufficient spacing may cause the heat radiation intensity to exceed the safety tolerance limit of wellhead equipment and operators during vent ignition, leading to secondary accidents. Recommended Measures: It is recommended to move the vent pipe to a safe distance beyond the standard requirements, or calculate the impact of heat radiation and take effective heat insulation protection measures."

[0040] Visual annotation and interactive unit: Provides a graphical user interface that supports graphical highlighting of problem locations (such as equipment with insufficient spacing or areas with missing configurations) found during the review on copies of original two-dimensional drawings (such as attached drawings or simplified site plans). This enables visual location of problem locations and allows users to confirm, supplement, and export the review results, achieving interactive review with text and graphics linkage.

[0041] Users can quickly locate the corresponding text and image content by clicking on the issue items in the report, greatly improving the efficiency of review and verification.

[0042] The system can record user feedback and optimize information extraction and rule application through machine learning, thereby achieving continuous improvement in self-iteration and automation.

[0043] Example 7 The fire protection design review method for coalbed methane field development of the present invention, based on the fire protection design review system for coalbed methane field development of Embodiment 6 above, includes the following sequential steps: Step S1: Document Input and Project Information Initialization. Users upload the coalbed methane fire protection design document (supporting Word, PDF, and other formats) to be reviewed through the system's interactive interface, and fill in or select basic project information, such as project name and construction location (accurate to the province and city).

[0044] Step S2: Dynamic loading and activation of applicable provisions in the multi-source specifications and knowledge base management module. Based on the project location, the system loads all applicable national specifications, industry standards, and local implementation rules. Through the rule engine, it activates all specification provisions related to the project's site type and technological characteristics, forming a dedicated set of specifications for this review.

[0045] Step S3: In-depth analysis and key information extraction of the special document content. The system calls the in-depth analysis and information extraction module of the special document content to analyze the fire protection design special document text and two-dimensional drawings, extract key design parameters and spatial layout information, and send them to the information fusion module for correlation and fusion to obtain the temporary parameter library of the site; Step S4: Invoke the core review engine module and initiate the following sub-processes to execute review tasks in parallel: Sub-step S41: Perform site fire hazard classification and conduct a global compliance review of fire protection facility configuration.

[0046] Sub-step S42: Compliance review of normative provisions. Based on the extracted site plan information, automatically calculate and verify the compliance of the safety distances throughout the site.

[0047] Sub-step S43: For each identified core process unit (wellhead, compressor, produced water tank, etc.), invoke the special compliance review based on the risk scenario.

[0048] Sub-step S44: Perform a consistency check on the design logic of the fire water system, alarm system, etc.

[0049] Step S5: Summarizing, Integrating, and Generating Review Results. Each review sub-engine submits its findings to the review results generation and interaction module. This module merges, removes duplicates, and classifies issues by severity level (e.g., major non-compliance, minor non-compliance, recommended improvement). Subsequently, a final review report is generated, including detailed regulatory citations, risk explanations, and rectification suggestions.

[0050] Step S6: Output and Interactive Feedback of Review Results. The system presents the generated review report (including a structured list of questions and a visual annotation chart) to the user. The user can confirm, supplement, raise objections, or export the review results. This feedback information can be recorded by the system for subsequent model optimization and rule adjustment, forming a closed-loop optimization mechanism.

[0051] Example 8 The fire protection design review method for coalbed methane field development, as described in Embodiment 7 of this invention, is used to review the fire protection design of a coalbed methane gathering station project. The steps are as follows: 1. Input: The user uploads the "Fire Protection Design Report for XX Gas Gathering Station.pdf" and related general layout and facility layout drawings. The system identifies the project location as "Shanxi Province".

[0052] 2. Loading Specifications: The system automatically loads the "Code for Fire Protection Design of Buildings", "Code for Design of Coalbed Methane Gathering and Transportation", and "Code for Fire Protection Design of Coalbed Methane Extraction in Shanxi Province", etc.

[0053] 3. Analysis and Information Fusion: The text semantic understanding and parameter extraction unit extracted information such as "effective volume of fire water tank is 600m³" and "compressor room uses mechanical ventilation with an air exchange rate of 8 times / hour" from the article.

[0054] The drawing information recognition and extraction unit extracts the coordinates and boundaries of equipment such as compressors and separators from the general drawing.

[0055] The information fusion module constructs a two-dimensional digital model of the gas gathering station and associates text parameters with the equipment in the model.

[0056] 4. Review of the core review engine module: Fire hazard classification and fire protection configuration suitability of the site: Based on the site scale and process composition information, the fire hazard level is determined by calling the multi-source specification and knowledge base management module. Then, the fire protection facility configuration described in the virtual temporary parameter library of the coalbed methane site is compared item by item with the fire protection configuration standard corresponding to the level in the site fire hazard classification and fire protection configuration rule library to verify the overall compliance. Compliance verification: The system calculation found that the fire water tank volume was 600m³, which is less than the requirement of "not less than 800m³" for similar stations in the "Shanxi Province Standards", and was marked as "non-compliant item".

[0057] Risk scenario review: For the compressor room, the system checked that its ventilation rate was 8 times / hour, which meets the standard recommendation of "not less than 12 times / hour" for explosive environments, but does not fully meet the standard. The review opinion is "it is recommended to verify and strengthen ventilation".

[0058] Consistency review: The system found that the text described "outdoor fire hydrants to be installed around the tank area", but there were blind spots in the coverage of this area on the fire protection facility map, which was marked as "inconsistency between text and map".

[0059] 5. Output: The system generates a review report and highlights the location of the fire water tank, compressor room, and fire hydrant blind spots on the general layout copy. Reviewers can use this report for efficient review and decision-making.

[0060] The fire protection design review system for coalbed methane field development of the present invention has the following advantages: The fire protection design chapters for surface engineering facilities such as coalbed methane well sites, gathering stations, booster stations, and treatment plants are automated for multi-source compliance, design logic consistency, and risk control effectiveness, based on industry technical specifications, national standards, and local implementation rules. They integrate the unique process flow, risk characteristics, and fire protection technical requirements of coalbed methane development, and achieve precise and standardized review of coalbed methane fire protection designs by building a professional knowledge base and review engine. Significantly enhanced professionalism: The system is designed specifically for the coalbed methane field. Its knowledge base and review logic depth are well-suited to the characteristics of the industry, and it can effectively handle professional challenges such as release space spacing and produced water fire protection. Its review depth far exceeds that of manual and general tools. Revolutionary breakthrough in review efficiency: Automated review frees reviewers from tedious tasks of searching, comparing, and calculating, shortening review time and improving efficiency; The quality and objectivity of the review process are significantly enhanced: Machine judgment based on a unified standard knowledge base avoids human oversight and subjective bias, ensuring the comprehensiveness, accuracy, and objectivity of review conclusions. This improves the automation level of the review process while significantly reducing over-reliance on the personal experience of reviewers. It addresses the shortcomings of existing technologies in reviewing fire protection design chapters in the coalbed methane development field, such as insufficient professionalism, low efficiency, and susceptibility to oversights. Furthermore, it can serve as a professional training tool for designers and novice reviewers, enabling them to quickly grasp key standard points and design criticalities through case studies.

Claims

1. A fire protection design special review system for coalbed methane field development, characterized by, include: Multi-source specification and knowledge base management module: Stores and structures specification clauses, and constructs specification knowledge graphs; In-depth analysis and information extraction module for fire protection design: Analyzes the fire protection design text and 2D drawings to extract key design parameters and spatial layout information; Information fusion module: It associates and fuses the extracted key design parameters and spatial layout information to obtain a temporary parameter library for the site; The core review engine module, based on the aforementioned standard knowledge graph and site temporary parameter library, performs hierarchical and fire protection configuration adaptability verification, compliance verification, risk scenario compliance review, and logical consistency review. Review Result Generation and Interaction Module: Summarizes, deduplicates, and classifies the severity levels of the review results, generates a structured review report, and marks the original drawings with issues.

2. The fire design review system for coalbed methane field development according to claim 1, wherein, The multi-source standard and knowledge base management module includes structured units of standard provisions, a coalbed methane process risk database, and a site fire hazard classification and fire protection configuration rule database. The structured unit of the standard provisions is used to process national, industry and local coalbed methane fire protection design standards into machine-readable structured forms. Through natural language processing technology, the standard provisions are decomposed into a triple structure of "applicable conditions", "core parameters" and "compliance criteria", and a standard knowledge graph is constructed to establish the relationship between the standard provisions. The coalbed methane process risk database is used to store the fire hazard classification, typical accident scenarios, and key risk control measures for coalbed methane development process units. The site fire hazard classification and fire protection configuration rule library contains built-in calculation logic and rules for automatically determining the site fire hazard level and corresponding fire protection configuration standards based on influencing factors.

3. The fire design review system for coalbed methane field development according to claim 2, wherein, The coalbed methane development process unit includes a wellhead and venting system, a compressor area, a produced water tank area, a gas gathering station separation area, a coalbed methane booster room, and a dehydration and dehydrocarbonization unit. The influencing factors include the scale of the coalbed methane processing plant, the total volume of storage tanks, the volume of a single tank, and the complexity of the process.

4. The fire design review system for coalbed methane field development according to claim 2, wherein, The module for in-depth analysis and information extraction of the special content includes a text semantic understanding and parameter extraction unit and a drawing information recognition and extraction unit. The text semantic understanding and parameter extraction unit uses a pre-trained domain language model to scan and analyze fire protection texts, perform semantic role labeling and named entity recognition on fire protection design texts, identify the specific applicable battlefield type and process type of the project to be reviewed, extract key design parameters, and store them in a structured manner. The fire protection design document includes Word, PDF, and TXT formats; The drawing information recognition and extraction unit integrates computer vision technology to parse the uploaded two-dimensional drawings, identify equipment symbols, tag numbers, boundaries and relative positions, and extract spatial layout information.

5. The fire design review system for coalbed methane field development according to claim 4, wherein, The key design parameters include the design of the venting system, the layout and fire protection measures of the produced water treatment area, the building structure of the coalbed methane compressor room, the ventilation design, the automatic fire extinguishing and alarm system, the details of the configuration of fire extinguishing equipment in the well site area, and the relative positional relationship between the functional zones and equipment in the general layout.

6. The fire design review system for coalbed methane field development according to claim 4, wherein, The design of the venting system includes the diameter and height of the venting pipe, and its distance from the wellhead and surrounding facilities; The building structure of the coalbed methane compressor room includes fire resistance rating and pressure relief area; The ventilation design includes the ventilation method and the number of air exchanges; The automatic fire extinguishing and alarm system includes the type of gas detector, its location, and the form of the fire alarm system.

7. The fire design review system for coalbed methane field development according to claim 1, wherein, The specific process of association and fusion is as follows: the key design parameters extracted from the text are compared with the spatial layout information extracted from the drawings, and information fusion is performed. If there is a discrepancy between the text and drawing information during the fusion process, the drawing information shall be given priority, and the key design parameters in the text shall be given secondary priority. The temporary parameter database for the site includes equipment attributes, spatial relationships, and fire protection facility configuration information.

8. The fire design review system for coalbed methane field development according to claim 5, wherein, The core review engine module includes a site fire hazard classification and fire protection configuration adaptability review sub-engine, an automatic compliance verification sub-engine, a risk scenario compliance review sub-engine, and a logical consistency review sub-engine, which review in sequence. The sub-engine for reviewing the fire hazard classification and fire protection configuration suitability of the site automatically calls the multi-source specification and knowledge base management module to determine the fire hazard level based on the site scale and process composition information extracted from the fire protection design chapter. Then, it compares the fire protection facility configuration described in the virtual temporary parameter library of the coalbed methane site with the fire protection configuration standard corresponding to the level in the site fire hazard classification and fire protection configuration rule library to verify the overall compliance and mark the items with insufficient or excessive configuration. The compliance automatic verification sub-engine compares the design parameters in the site temporary parameter library with the provisions in the specification knowledge graph to check whether they meet the requirements, and identifies and marks all non-compliant items. The risk scenario compliance review sub-engine conducts a special in-depth review of each unit of the coalbed methane development process based on typical accident scenarios in the coalbed methane process risk library to check whether they meet the setting requirements. Logical consistency review sub-engine: checks the consistency between the content of the special article and between the text and images, and whether there are logical contradictions between various fire protection systems and within the system.

9. The fire protection design review system for coalbed methane field development according to claim 1, characterized in that, The review result generation and interaction module includes a report generation unit and a visualization annotation and interaction unit; The report generation unit is used to summarize, deduplicate, and classify the severity levels of the review results, generate a structured review report, list the problem items, the violated normative clauses, the location of the problem, and provide modification suggestions; The visual annotation and interaction unit provides a graphical user interface that allows users to graphically highlight the locations of problems found during the review on copies of the original 2D drawings. It also allows users to confirm, supplement, and export the review results, enabling interactive review with text and graphics linkage.

10. The fire protection design review method for coalbed methane field development using the fire protection design review system as described in any one of claims 1-9, characterized in that, The steps are as follows: Step S1: Users upload fire protection design documents and related 2D drawings through the system interface, and fill in the project location information; Step S2: The multi-source standards and knowledge base management module loads and activates all applicable national, industry, and local standards and regulations based on the project's location; Step S3: The in-depth analysis and information extraction module analyzes the fire protection design document text and two-dimensional drawings, extracts key design parameters and spatial layout information, and sends them to the information fusion module for association and fusion to obtain the temporary parameter library of the site. Step S4: Start the core review engine for review, specifically: Step S41: Conduct a fire hazard classification and fire protection configuration suitability review for the site; Step S42: Conduct a compliance review of the normative provisions; Step S43: Conduct a specific compliance review based on risk scenarios; Step S44: Perform a logical consistency review of the graphics and text; Step S5: The review result generation and interaction module summarizes the review results from the core review engine module, performs issue deduplication and severity classification, generates and outputs the final review report with standard citations and visual annotations, presents it to the user, and supports confirmation, supplementation and export of the review results.

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