Safety assessment method and system for gas field water transmission pipeline

Abstract

The present invention discloses a safety assessment method and system for a gas field water transmission pipeline, and belongs to the technical field of safety risk assessment. The method comprises: obtaining historical transmission data of a gas field water transmission pipeline to be evaluated in the historical transmission process; determining multiple evaluation indicators of the gas field water transmission pipeline according to the historical transmission data, and dividing the gas field water transmission pipeline into multiple gas field water transmission sub-pipelines according to the multiple evaluation indicators of the gas field water transmission pipeline; collecting multiple pipeline information of each gas field water transmission sub-pipeline; determining the score of each gas field water transmission sub-pipeline according to the pipeline information of each gas field water transmission sub-pipeline and the scoring standard of each evaluation indicator; determining the risk value of each gas field water transmission sub-pipeline according to the score of each gas field water transmission sub-pipeline; and determining the risk level of each gas field water transmission sub-pipeline according to the risk value of each gas field water transmission sub-pipeline. The reliability and accuracy of the assessment are improved.

Description

Technical Field

[0001] The invention relates to the technical field of safety risk assessment, and in particular to a safety assessment method and system for a gas field water transmission pipeline. Background Art

[0002] During the development of gas fields, gas field water is usually produced while natural gas is being extracted. Gas field water refers to groundwater in the gas field. Gas field water is prone to corrosion, scaling, and environmental pollution. It usually requires closed pipelines to transport gas field water. In addition, technicians in this field usually need to conduct safety risk assessments on the transmission pipelines to further ensure the safety of the transportation process.

[0003] Generally, the gas field water transportation pipeline is a partial subsystem included in the gas field water transportation system, and the gas field water transportation system also includes three subsystems such as ground processing station, reinjection wellbore, and reinjection formation. In this field, technicians generally conduct an overall assessment of the gas field water transportation system from two aspects: the material of the equipment in the entire transportation system and the characteristics of the gas field water itself, and score the entire transportation system based on the assessment results to obtain a safety assessment result. The safety assessment result can be: safe, relatively safe, dangerous or high risk, etc. Technicians generally use the safety assessment result of the transportation system as the assessment result of the transmission pipeline.

[0004] However, the above method actually evaluates the entire transportation system, which also includes subsystems other than the transmission pipeline. Moreover, the above evaluation process is based on manual scoring, which is highly subjective, resulting in inaccurate evaluation. Summary of the invention

[0005] The embodiment of the present invention provides a method and system for safety assessment of gas field water transmission pipelines, which can solve the problem of inaccurate and incomplete assessment. The technical solution is as follows:

[0006] In one aspect, a method for safety assessment of a gas field water transmission pipeline is provided, the method comprising:

[0007] Obtain historical transportation data of the gas field water transportation pipeline to be evaluated during the historical transportation process;

[0008] Determine a plurality of evaluation indicators of the gas field water transmission pipeline according to the historical transmission data, wherein the plurality of evaluation indicators are used to indicate factors causing damage to the gas field water transmission pipeline and consequences caused by the damage to the gas field water transmission pipeline;

[0009] Determining the weight and scoring criteria of each evaluation indicator in the multiple evaluation indicators;

[0010] According to a plurality of evaluation indicators of the gas field water transmission pipeline to be evaluated, the gas field water transmission pipeline is divided into a plurality of gas field water transmission sub-pipelines;

[0011] Collect multiple pipeline information of each gas field water delivery sub-pipeline;

[0012] Determine the score of each section of the gas field water delivery sub-pipeline in each evaluation indicator according to the pipeline information of each section of the gas field water delivery sub-pipeline, the weight of each evaluation indicator and the scoring standard;

[0013] Determining the risk value of each section of the gas field water delivery sub-pipeline according to the scores of each section of the gas field water delivery sub-pipeline in multiple evaluation indicators;

[0014] The risk level of each section of the gas field water transportation sub-pipeline is determined according to the risk value of each section of the gas field water transportation sub-pipeline.

[0015] Optionally, after determining the multiple evaluation indicators of the gas field water transportation pipeline according to the historical transportation data, the method further includes:

[0016] Displaying a plurality of first Sadie scales, obtaining a score for each evaluation index in the plurality of first Sadie scales, each first Sadie scale carrying a plurality of evaluation indexes for indicating the importance of each evaluation index on the safety of the gas field water transmission pipeline, and scoring each evaluation index;

[0017] The weight of each evaluation indicator is determined according to the score of each evaluation indicator in the first Sadie scale.

[0018] Optionally, each evaluation indicator includes a plurality of sub-evaluation indicators. Accordingly, after determining the weight of each evaluation indicator according to the score of each evaluation indicator in the first Sadie scale, the method further includes:

[0019] For each evaluation indicator, display a second Sadie scale table of each evaluation indicator, and obtain a score of each sub-evaluation indicator in the second Sadie scale table, where the second Sadie scale table carries multiple sub-evaluation indicators included in each evaluation indicator;

[0020] According to the score of each sub-evaluation indicator in the second Sadie scale, the weight of each sub-evaluation indicator in each evaluation indicator is determined.

[0021] Optionally, determining the risk value of each section of the gas field water transportation sub-pipeline according to the scores of each section of the gas field water transportation sub-pipeline in multiple evaluation indicators includes:

[0022] For each section of the gas field water delivery sub-pipeline, according to the scores of each section of the gas field water delivery sub-pipeline in multiple evaluation indicators, the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline are calculated;

[0023] According to the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline, the risk value of each section of the gas field water delivery sub-pipeline is determined by the following formula 1;

[0024] Formula 1: R = S × C;

[0025] Among them, R refers to the risk value of each section of gas field water delivery sub-pipeline, S refers to the damage risk value of each section of gas field water delivery sub-pipeline, S = a1S1+a2S2+…+a i S i +…+a x S x , S i is the i-th evaluation index among the evaluation indexes of the possibility of damage to the gas field water pipeline, a i is the weight of the i-th evaluation index, C refers to the risk value of leakage consequences of each section of gas field water transmission sub-pipeline, C = b1C1+b2C2+…+b j C j +…+b y C y , C j is the jth evaluation index among the evaluation indexes of the consequences caused by the leakage of gas field water pipeline, b j is the weight of the jth evaluation indicator.

[0026] Optionally, dividing the gas field water transportation pipeline into multiple gas field water transportation sub-pipelines according to the multiple evaluation indicators comprises:

[0027] Obtaining a preset segmentation principle of the gas field water delivery pipeline, inserting segmentation points into the gas field water delivery pipeline, and obtaining multiple segments of gas field water delivery sub-pipelines;

[0028] The preset segmentation principle is as follows: based on the preset sub-evaluation index of the gas field water transmission pipeline, segmentation points are inserted at pipelines where the variation range of pipeline information corresponding to the preset sub-evaluation index exceeds the preset range.

[0029] Optionally, the gas field water delivery pipeline is a gas field water delivery pipeline made of fiberglass.

[0030] On the other hand, a safety assessment system for a gas field water transmission pipeline is provided, the safety assessment system comprising a terminal, a database server, a plurality of management servers, and a plurality of sensors, the plurality of sensors being respectively installed on the gas field water transmission pipeline, the plurality of sensors being connected to the plurality of management servers, and the plurality of management servers, the database server, and the terminal being connected to each other;

[0031] The database server obtains historical transportation data of the gas field water transportation pipeline to be evaluated during the historical transportation process, and sends the historical transportation data to the terminal;

[0032] The terminal determines, based on the historical transportation data, a plurality of evaluation indicators of the gas field water transportation pipeline, and determines a weight and a scoring standard for each of the plurality of evaluation indicators, wherein the plurality of evaluation indicators are used to indicate factors causing damage to the gas field water transportation pipeline and consequences caused by the damage to the gas field water transportation pipeline;

[0033] The terminal divides the gas field water transmission pipeline into multiple gas field water transmission sub-pipelines according to multiple evaluation indicators of the gas field water transmission pipeline to be evaluated;

[0034] Each sensor collects pipeline information of the gas field water delivery sub-pipeline at the location where each sensor is installed, and sends the collected pipeline information to the management server corresponding to each section of the gas field water delivery sub-pipeline;

[0035] Each management server sends pipeline information of each gas field water transmission sub-pipeline corresponding to each management server to the terminal;

[0036] The terminal is further used to receive multiple pipeline information of multiple sections of gas field water delivery sub-pipelines from multiple management servers, and determine the score of each section of the gas field water delivery sub-pipeline in each evaluation indicator according to the pipeline information of each section of the gas field water delivery sub-pipeline, the weight of each evaluation indicator and the scoring standard;

[0037] The terminal is further used to determine the risk value of each section of the gas field water delivery sub-pipeline according to the scores of each section of the gas field water delivery sub-pipeline in multiple evaluation indicators;

[0038] The terminal is also used to determine the risk level of each section of the gas field water transportation sub-pipeline according to the risk value of each section of the gas field water transportation sub-pipeline.

[0039] Optionally, the terminal includes a display module, a data acquisition module, and a data processing module;

[0040] The display module is used to display a plurality of first Sadie scales;

[0041] The data acquisition module is used to obtain the score of each evaluation index in the plurality of first Sadie scales, each of which carries a plurality of evaluation indexes, and is used to indicate the importance of each evaluation index on the safety of the gas field water transmission pipeline, and to score each evaluation index;

[0042] The data processing module is used to determine the weight of each evaluation indicator according to the score of each evaluation indicator in the first Sadie scale.

[0043] Optionally, the terminal includes a data processing module;

[0044] The data processing module is used to calculate the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline according to the scores of each section of the gas field water delivery sub-pipeline in multiple evaluation indicators; according to the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline, determine the risk value of each section of the gas field water delivery sub-pipeline through the following formula 1;

[0045] Formula 1: R = S × C;

[0046] Among them, R refers to the risk value of each section of gas field water delivery sub-pipeline, S refers to the damage risk value of each section of gas field water delivery sub-pipeline, S = a7S7+a2S2+…+a i S i +…+a x S x , S i is the i-th evaluation index among the evaluation indexes of the possibility of damage to the gas field water pipeline, a i is the weight of the i-th evaluation index, C refers to the leakage consequence risk value of each section of the gas field water transmission sub-pipeline, C = b7C7+b2C2+…+b j C j +…+b y C y , C j is the jth evaluation index among the evaluation indexes of the consequences caused by the leakage of gas field water pipeline, b j is the weight of the jth evaluation indicator.

[0047] Optionally, the security assessment system further includes a storage server;

[0048] The storage server is further used to send the preset segmentation principle of the gas field water transmission pipeline to the terminal;

[0049] The terminal is further used to receive the preset segmentation principle of the storage server, and insert segmentation points into the gas field water delivery pipeline according to the preset segmentation principle to obtain multiple gas field water delivery sub-pipelines;

[0050] The preset segmentation principle is as follows: based on the preset sub-evaluation index of the gas field water transmission pipeline, segmentation points are inserted at pipelines where the variation range of pipeline information corresponding to the preset sub-evaluation index exceeds the preset range.

[0051] The technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0052] In an embodiment of the present invention, the terminal can obtain the historical transportation data of the gas field water transmission pipeline to be evaluated in the historical transportation process; and determine multiple evaluation indicators of the gas field water transmission pipeline based on the historical transportation data, and divide the gas field water transmission pipeline into multiple gas field water transmission sub-pipelines based on the multiple evaluation indicators; collect multiple pipeline information of each gas field water transmission sub-pipeline; determine the score of each gas field water transmission sub-pipeline in each evaluation indicator based on the pipeline information of each gas field water transmission sub-pipeline and the scoring standard of each evaluation indicator; determine the risk value of each gas field water transmission sub-pipeline based on the score of each gas field water transmission sub-pipeline in multiple evaluation indicators; determine the risk level of each gas field water transmission sub-pipeline based on the risk value of each gas field water transmission sub-pipeline. Since the entire evaluation process evaluates the transmission pipeline, selects evaluation indicators from multiple angles, segments the transmission pipeline, and determines the risk level of each transmission sub-pipeline based on the risk value of each transmission sub-pipeline, the reliability and accuracy of the gas field water transmission pipeline evaluation are improved. Moreover, the whole process is easy to operate, which saves the user's operation time and improves the evaluation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0054] Figure 1 It is a flow chart of a safety assessment method for a gas field water transmission pipeline provided by an embodiment of the present invention;

[0055] Figure 2 It is a flow chart of a safety assessment method for a gas field water transmission pipeline provided by an embodiment of the present invention;

[0056] Figure 3 This is a risk assessment result diagram of the C39-C1 well gas field water transportation pipeline provided by the embodiment of the utility model;

[0057] Figure 4 It is a structural schematic diagram of a safety assessment system for a gas field water transmission pipeline provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] Figure 1 This is a flow chart of a method for safety assessment of a gas field water pipeline provided by an embodiment of the present invention. The execution subject of this embodiment of the invention is a terminal, see Figure 1 , the method comprising:

[0060] 101. Obtain historical transportation data of the gas field water transportation pipeline to be evaluated during the historical transportation process;

[0061] 102. Determine multiple evaluation indicators of the gas field water transmission pipeline based on the historical transmission data, wherein the multiple evaluation indicators are used to indicate factors causing damage to the gas field water transmission pipeline and consequences caused by the damage to the gas field water transmission pipeline;

[0062] 103. Determine the weight and scoring criteria of each evaluation indicator among the multiple evaluation indicators;

[0063] 104. Divide the gas field water transmission pipeline into multiple gas field water transmission sub-pipelines according to multiple evaluation indicators of the gas field water transmission pipeline;

[0064] 105. Collect multiple pipeline information of each section of gas field water delivery sub-pipeline;

[0065] 106. Determine the score of each section of the gas field water transportation sub-pipeline in each evaluation indicator according to the pipeline information of each section of the gas field water transportation sub-pipeline, the weight of each evaluation indicator and the scoring standard;

[0066] 107. Determine the risk value of each section of the gas field water transportation sub-pipeline according to the scores of each section of the gas field water transportation sub-pipeline in multiple evaluation indicators;

[0067] 108. Determine the risk level of each section of the gas field water transportation sub-pipeline according to the risk value of each section of the gas field water transportation sub-pipeline.

[0068] Optionally, after determining a plurality of evaluation indicators of the gas field water transmission pipeline according to the historical transmission data, the method further comprises:

[0069] Displaying a plurality of first Sadie scales, obtaining a score for each evaluation index in the plurality of first Sadie scales, each first Sadie scale carrying a plurality of evaluation indexes for indicating the importance of each evaluation index on the safety of the gas field water transmission pipeline, and scoring each evaluation index;

[0070] According to the score of each evaluation indicator in the first Sadie scale, the weight of each evaluation indicator is determined.

[0071] Optionally, each evaluation indicator includes a plurality of sub-evaluation indicators. Accordingly, after determining the weight of each evaluation indicator according to the score of each evaluation indicator in the first Sadie scale, the method further includes:

[0072] For each evaluation indicator, display the second Sadie scale table of each evaluation indicator, and obtain the score of each sub-evaluation indicator in the second Sadie scale table, where the second Sadie scale table carries multiple sub-evaluation indicators included in each evaluation indicator;

[0073] According to the score of each sub-evaluation indicator in the second Sadie scale, the weight of each sub-evaluation indicator in each evaluation indicator is determined.

[0074] Optionally, the risk value of each section of the gas field water delivery sub-pipeline is determined according to the scores of each section of the gas field water delivery sub-pipeline in multiple evaluation indicators, including:

[0075] For each section of the gas field water transportation sub-pipeline, according to the scores of each section of the gas field water transportation sub-pipeline in multiple evaluation indicators, the damage risk value and leakage consequence risk value of each section of the gas field water transportation sub-pipeline are calculated;

[0076] According to the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline, the risk value of each section of the gas field water delivery sub-pipeline is determined by the following formula 1;

[0077] Formula 1: R = S × C;

[0078] Among them, R refers to the risk value of each section of gas field water delivery sub-pipeline, S refers to the damage risk value of each section of gas field water delivery sub-pipeline, S = a1S1+a2S2+…+a i S i +…+a x S x , S i is the i-th evaluation index among the evaluation indexes of the possibility of damage to the gas field water pipeline, a i is the weight of the i-th evaluation index, C refers to the risk value of leakage consequences of each section of gas field water transmission sub-pipeline, C = b1C1+b2C2+…+b j C j +…+by C y , C j is the jth evaluation index among the evaluation indexes of the consequences caused by the leakage of gas field water pipeline, b j is the weight of the jth evaluation indicator.

[0079] Optionally, dividing the gas field water delivery pipeline into multiple gas field water delivery sub-pipelines according to the multiple evaluation indicators includes:

[0080] Obtaining a preset segmentation principle of the gas field water transmission pipeline, inserting segmentation points into the gas field water transmission pipeline, and obtaining multiple segments of gas field water transmission sub-pipelines;

[0081] The preset segmentation principle is: based on the preset sub-evaluation index of the gas field water transmission pipeline, a segmentation point is inserted at the pipeline where the variation range of the pipeline information corresponding to the preset sub-evaluation index exceeds the preset range.

[0082] Optionally, the gas field water transportation pipeline is a gas field water transportation pipeline made of fiberglass.

[0083] In an embodiment of the present invention, the terminal can obtain the historical transportation data of the gas field water transmission pipeline to be evaluated in the historical transportation process; and according to the historical transportation data, determine multiple evaluation indicators of the gas field water transmission pipeline, and divide the gas field water transmission pipeline into multiple gas field water transmission sub-pipelines based on the multiple evaluation indicators; collect multiple pipeline information of each gas field water transmission sub-pipeline; according to the pipeline information of each gas field water transmission sub-pipeline and the scoring standard of each evaluation indicator, determine the score of each gas field water transmission sub-pipeline in each evaluation indicator; according to the score of each gas field water transmission sub-pipeline in multiple evaluation indicators, determine the risk value of each gas field water transmission sub-pipeline; according to the risk value of each gas field water transmission sub-pipeline, determine the risk level of each gas field water transmission sub-pipeline. Since the entire evaluation process evaluates the transmission pipeline, selects evaluation indicators from multiple angles, segments the transmission pipeline, and determines the risk level of each transmission sub-pipeline based on the risk value of each transmission sub-pipeline, the reliability and accuracy of the gas field water transmission pipeline evaluation are improved. Moreover, the whole process is easy to operate, which saves the user's operation time and improves the evaluation efficiency.

[0084] Figure 2 This is a flow chart of a method for safety assessment of a gas field water pipeline provided by an embodiment of the present invention. The execution subject of this embodiment of the invention is a terminal, see Figure 2 , the method comprising:

[0085] 201. The terminal obtains historical transportation data of the gas field water transportation pipeline to be evaluated during the historical transportation process.

[0086] In an embodiment of the present invention, the terminal can obtain historical transportation data of the gas field water pipeline to be evaluated from the database server. The historical transportation data may include the transportation volume, operating pressure, pipeline material, time of damage, operating pressure before and after damage, and other data of the gas field water pipeline, so that the subsequent terminal can determine multiple evaluation indicators based on the historical transportation data.

[0087] 202. The terminal determines a plurality of evaluation indicators of the gas field water transmission pipeline according to the historical transmission data.

[0088] Among them, the multiple evaluation indicators are used to indicate the factors that cause the damage to the gas field water transmission pipeline and the consequences caused by the damage to the gas field water transmission pipeline. The multiple evaluation indicators refer to the indicators used when evaluating the safety risks of the gas field water transmission pipeline. The terminal can predict the possibility of damage to the gas field water transmission pipeline and the consequences caused by leakage based on the historical transmission data, and collect multiple evaluation indicators of the gas field water transmission pipeline to be evaluated; further, the terminal divides each evaluation indicator into multiple sub-evaluation indicators, so that each evaluation indicator can also include multiple sub-evaluation indicators. Among them, the evaluation indicators from the perspective of the possibility of damage to the gas field water transmission pipeline include: third-party damage factors, design factors, operating status, and regional environmental factors; the evaluation indicators from the perspective of the consequences caused by leakage of the gas field water transmission pipeline include: medium influencing factors and leakage influencing factors.

[0089] The terminal can collect multiple evaluation indicators of the gas field water transmission pipeline and multiple sub-evaluation indicators included in each evaluation indicator in combination with the specifications and standards of the authority for gas field water transmission. The authority can be a country, an enterprise or an industry, etc. The specifications and standards can be the latest standards of the enterprise or industry specifications, etc. The embodiment of the present invention does not specifically limit this.

[0090] In addition, generally, the gas field water delivery pipeline can be a glass fiber reinforced plastic gas field water delivery pipeline, which is mainly used to deliver gas field water. The terminal can also combine the evaluation index of the steel delivery pipeline for delivering oil and gas, and add the evaluation index of the steel delivery pipeline to the evaluation index of the glass fiber reinforced plastic gas field water delivery pipeline.

[0091] The terminal can use multiple evaluation factors as primary indicators and sub-evaluation indicators under the evaluation indicators as secondary indicators. In the embodiment of the present invention, the gas field water transmission pipeline can be a glass fiber reinforced plastic gas field water transmission pipeline, and the evaluation indicators of the glass fiber reinforced plastic gas field water transmission pipeline can be divided into multiple evaluation indicators, each evaluation indicator includes multiple sub-evaluation indicators, as shown in Table 1 below, the glass fiber reinforced plastic gas field water transmission pipeline can include 6 primary evaluation indicators and 24 secondary evaluation indicators.

[0092] Table 1

[0093]

[0094]

[0095] It should be noted that the terminal can further divide the sub-evaluation index. As shown in Table 1 above, the terminal can further divide the secondary evaluation index into multiple tertiary evaluation indicators. For example, the terminal can further divide the activity level of the secondary evaluation index into: the construction frequency of the construction unit, the construction level, the construction duration of each construction, etc. The embodiment of the present invention does not specifically limit this.

[0096] 203. The terminal determines a weight and a scoring standard for each evaluation indicator among the multiple evaluation indicators.

[0097] In the embodiment of the present invention, the weight of each evaluation index is used to indicate the importance of the evaluation index to the gas field water transmission pipeline. The terminal can determine the weight of each evaluation index by using the Sadie scale.

[0098] In this step, the terminal obtains the score of each evaluation indicator according to the first Sadie scale table of multiple evaluation indicators; the terminal determines the weight of each evaluation indicator according to the score of each evaluation indicator in the first Sadie scale table. Wherein, since each evaluation indicator includes multiple sub-evaluation indicators, correspondingly, after the terminal determines the weight of each evaluation indicator according to the score of each evaluation indicator in the first Sadie scale table, for the multiple sub-evaluation indicators included in each evaluation indicator, the terminal can also obtain the score of each sub-evaluation indicator according to the second Sadie scale table of the multiple sub-evaluation indicators included in each evaluation indicator; and determine the weight of each sub-evaluation indicator in the evaluation indicator to which the sub-evaluation indicator belongs according to the score of each sub-evaluation indicator in the second Sadie scale table.

[0099] It should be noted that the terminal can establish a Sadie scale based on the multiple evaluation indicators, and multiple technical personnel in the field or expert engineers in the field can score the multiple evaluation indicators based on the Sadie scale according to the importance of the multiple evaluation indicators on the gas field water transmission pipeline. The terminal can collect the scores of the multiple evaluation indicators given by multiple technical personnel in the field or experts and engineers in the field based on the Sadie scale, and summarize the scores of the multiple evaluation indicators, and determine the weight of each evaluation indicator through a preset algorithm. Among them, the score of each evaluation indicator is used to indicate the importance of the evaluation indicator to the safety risk of the gas field water transmission pipeline.

[0100] As shown in Table 2 below, the first Sadie scale including multiple evaluation indicators may be as shown in Table 2 below:

[0101] Table 2

[0102]

[0103] Among them, multiple technicians in this field or expert engineers in this field can fill in the scores of each evaluation index according to the importance between each evaluation index in the Sadie scale. Then, the terminal summarizes and statistics the Sadie scale of multiple technicians in this field or experts and engineers in this field, and determines the weights of multiple evaluation indicators and the weights of multiple sub-evaluation indicators. Among them, for each evaluation index, the terminal can calculate the average value of the scores of multiple technicians in this field or expert engineers in this field for the evaluation index through the truncated mean algorithm, and determine the geometric mean of the evaluation index through the fuzzy matrix calculation model, and finally use the principle of mutual restriction between multiple evaluation indicators to determine the weights between each evaluation index. Of course, the way in which the terminal determines the weights of the sub-evaluation indicators included in each evaluation index is consistent with the way in which the weights of the evaluation indicators are determined, and will not be repeated here.

[0104] As shown in Table 3 below: The weights of the various evaluation indicators determined by the terminal, and the weights of the sub-evaluation indicators included in each evaluation indicator are shown in Table 3 below:

[0105] Table 3

[0106]

[0107]

[0108] 204. The terminal divides the gas field water transmission pipeline into multiple gas field water transmission sub-pipelines according to multiple evaluation indicators of the gas field water transmission pipeline, and collects multiple pipeline information of each gas field water transmission sub-pipeline.

[0109] Among them, the multiple pipeline information is the information required for evaluating the gas field water transmission pipeline based on the multiple evaluation indicators. In the embodiment of the present invention, for the gas field water transmission pipeline, the potential safety risks of the transmission pipeline may be different based on the different geographical locations of the transmission pipeline. Usually, the safety risks are different as the environmental conditions along the pipeline are different. The terminal obtains the preset segmentation principle of the gas field water transmission pipeline, inserts segmentation points into the gas field water transmission pipeline, and obtains multiple gas field water transmission sub-pipelines. Among them, the preset segmentation principle can be: based on the preset sub-evaluation indicator of the gas field water transmission pipeline, the pipeline whose variation range of the pipeline information corresponding to the preset sub-evaluation indicator exceeds the preset range is inserted with a segmentation point. Specifically, in the preset sub-evaluation indicator, when the pipeline information of a certain section of the pipeline is different from the pipeline information of the adjacent pipeline of the section of the pipeline, a segmentation point is inserted at the section of the pipeline, so that the section of the pipeline is divided into a section of the pipeline in the gas field water transmission pipeline.

[0110] It should be noted that the terminal can select the preset sub-evaluation index in combination with the "Pipeline Risk Management Manual". In the embodiment of the present invention, the preset sub-evaluation index may include: population density of the environment where the gas field water transmission pipeline is located, soil conditions, anti-corrosion layer conditions of the pipeline, working hours of the pipeline, and whether it is a high consequence area. At least one of the following.

[0111] Among them, for population density: the terminal can determine a detection point every first preset length, detect the population density in the environment where the pipeline of this section of the first preset length is located, and the rate of change between the population density of the adjacent pipeline of the first preset length; when the rate of change between the population density of this section of the pipeline and the population density of the adjacent section of the pipeline is not less than 10%, insert a segmentation point at the section of the pipeline of the first preset length, so that the section of the pipeline of the first preset length is treated as a separate section of the pipeline; wherein, the first preset length can be 2000m, 1500m, etc., and the embodiment of the present invention does not make specific limitations on this.

[0112] For soil conditions: mainly refers to soil corrosion conditions, the terminal can determine a detection point every second preset length to detect the soil corrosion degree of the pipeline of the second preset length. When the change rate of the soil corrosion degree of the pipeline of the second preset length and the soil corrosion degree of the adjacent pipeline of the second preset length is not less than 30%, a segmentation point is inserted at the pipeline of the second preset length, so that the pipeline of the second preset length is treated as a separate pipeline; wherein, the first preset length can be 150m, 100m, etc., and the embodiment of the present invention does not make specific limitations on this.

[0113] Regarding the condition of the pipeline's anti-corrosion layer: the terminal can also divide the pipeline into a section by inserting segmentation points at the location where the pipeline's anti-corrosion layer changes greatly; the segmentation principle is the same as the above-mentioned segmentation principle based on population density or soil conditions, and will not be repeated here.

[0114] Regarding the working time of the pipeline, that is, the age of the pipeline, when the working time of a section of the pipeline is different from that of the adjacent pipeline, the pipeline is divided into one section of the pipeline; of course, the segmentation principle is the same as the above-mentioned segmentation principle based on population density or soil conditions, which will not be repeated here.

[0115] Regarding whether it is a high consequence area: the pipeline whose terminal can be located in the high consequence area can be divided into a separate pipeline section.

[0116] In the embodiment of the present invention, the terminal can also divide the gas field water transmission pipeline according to more pipeline information. The division process is the same as the above division process, which will not be repeated here.

[0117] Then, for each gas field water delivery sub-pipeline, the terminal can collect pipeline information corresponding to each sub-evaluation standard of each gas field water delivery sub-pipeline according to each sub-evaluation standard included in the multiple evaluation standards, thereby obtaining the evaluation pipeline information of the gas field water delivery sub-pipeline. For example, among the leakage influencing factors, the pipeline information corresponding to the sub-evaluation index of population density can be the actual data 138 people / square kilometer collected in real time by the terminal.

[0118] It should be noted that the pipeline information is obtained by operating personnel based on actual research and field surveys in advance. For example, they investigate the materials, specifications, design, construction, maintenance and other information of gas field water transmission pipelines, conduct on-site surveys, and clarify the surrounding conditions, regional grades, soil, hydrology, geology and other conditions along each gas field water transmission pipeline, so as to obtain pipeline information that conforms to the actual on-site conditions, thereby improving the reliability and accuracy of safety risk assessment.

[0119] 205. The terminal determines the score of each section of the gas field water transportation sub-pipeline in each evaluation indicator according to the pipeline information of each section of the gas field water transportation sub-pipeline, the weight of each evaluation indicator and the scoring standard.

[0120] In this step, the terminal determines the score of each section of the gas field water delivery sub-pipeline for each evaluation indicator according to the scoring criteria of each evaluation indicator. Each evaluation indicator may include multiple sub-evaluation indicators. Further, for each section of the gas field water delivery sub-pipeline, the terminal may also obtain the scoring criteria of the sub-evaluation indicator in advance, so that the operator can score the sub-evaluation indicator of each section of the gas field water delivery sub-pipeline based on the scoring criteria, and the terminal obtains the score of each sub-evaluation indicator of each section of the gas field water delivery sub-pipeline.

[0121] Among them, operating personnel can refer to the scoring criteria in advance and conduct basic situation analysis of each section of the transmission sub-pipeline, including test results, transmission media and accident analysis data, investigate the material, specification, design, construction, maintenance and other information of the gas field water transmission pipeline, conduct on-site surveys, clarify the surrounding conditions along the line, regional grade, soil, hydrology, geology and other conditions of each gas field water transmission pipeline, and then evaluate and score according to the scoring criteria.

[0122] 206. The terminal determines the risk value of each section of the gas field water transportation sub-pipeline according to the scores of each section of the gas field water transportation sub-pipeline in multiple evaluation indicators.

[0123] In this step, for each section of the gas field water delivery sub-pipeline, the terminal calculates the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline according to the scores of each section of the gas field water delivery sub-pipeline in multiple evaluation indicators; the terminal determines the risk value of each section of the gas field water delivery sub-pipeline according to the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline through the following formula 1;

[0124] Formula 1: R = S × C;

[0125] Among them, R refers to the risk value of each section of gas field water delivery sub-pipeline, S refers to the damage risk value of each section of gas field water delivery sub-pipeline, S = a1S1+a2S2+…+a i S i +…+a x S x ; Among them, S i is the i-th evaluation index among the evaluation indexes of the possibility of damage to the gas field water pipeline, a i is the weight of the i-th evaluation index, that is, the S i Correction coefficient; C refers to the leakage consequence risk value of each section of gas field water transmission pipeline, C = b1C1+b2C2+…+b j C j +…+b y C y Among them, C j is the jth evaluation index among the evaluation indexes of the consequences caused by the leakage of gas field water pipeline, b j is the weight of the jth evaluation index, that is, the C j The correction factor of .

[0126] It should be noted that when the terminal can use the above formula 1 to determine the risk value, for each gas field water transmission pipeline, it not only combines the local pipeline accident statistics and expert opinions on design, installation, use, inspection, etc., but also determines a correction model for the specific situation on this basis, that is, the above formula 1, determines the weight of each evaluation index, and performs normalization processing to ensure that the risk value of each section of the gas field water transmission sub-pipeline and the weight of the damage risk value of each section of the gas field water transmission sub-pipeline are the same, and the weight of each evaluation index is equal to the sum of the weights of each sub-evaluation index included in the evaluation index, so as to finally obtain the risk value of each section of the gas field water transmission sub-pipeline.

[0127] 207. The terminal determines the risk level of each section of the gas field water transportation sub-pipeline according to the risk value of each section of the gas field water transportation sub-pipeline.

[0128] In the embodiment of the present invention, the terminal can determine the risk level of each section of the gas field water transmission pipeline according to the risk value of the gas field water transmission pipeline and the corresponding relationship between the risk value and the risk level.

[0129] As shown in Table 4 below, the terminal stores in advance the corresponding relationship between each risk value and risk level as follows:

[0130] Table 4

[0131] Risk value R range Absolute level of risk (0，52) Low risk (Ⅰ) (52，106) Moderate risk (II) (106，168) Higher risk (III) (168，200) High risk (IV)

[0132] As shown in Table 4 above, the terminal can divide the risk level into 4 levels according to the risk classification method in GBT27512-2011, namely: low risk absolute level, medium risk absolute level, higher risk absolute level, and high risk absolute level. The terminal can also determine the risk value classification range in combination with the risk range ratio in GBT27512-2011.

[0133] It should be noted that after the terminal determines the risk level, the staff can formulate risk control measures for each section of the transmission sub-pipeline, thereby obtaining more targeted control measures and ensuring the reliability of the subsequent prevention process.

[0134] In order to more clearly introduce the above security assessment process, examples are listed below to further illustrate the embodiments of the present invention.

[0135] The starting point of the C39-C1 gas field water pipeline is the C1 well and the end point is the C39 well; the total length of the pipeline is 7.8km. It was completed and put into operation in May 2001. The pipeline specifications are: D89×4, design pressure 4MPa, design flow 15m3 / h, actual pressure 1.8MPa, actual flow design flow 15m3 / h, as shown in Table 5.1. The experimental pressure of the reinjection system pressure test in 2001 was 7.2MPa, and the test results were qualified for the strength pressure test and the tightness pressure test. The buried depth requirements of the pipeline are paddy fields ≥0.8m, dry land ≥0.6m, barren slope rocks ≥0.5m, and the upper end of the highway steel casing to the road surface ≥1.2m. The casing and protective layer must be placed in the stable layer below ≥0.5m when crossing rivers and streams.

[0136] The current status statistics of C39~C1 gas field water transmission pipelines are shown in Table 5:

[0137] Table 5

[0138]

[0139] The soil around the pipeline is farmland, and the economic value of crops is not high. There are drinking water sources in the surrounding water bodies along the way, including 5 fish ponds, 8 ponds, 6 canals, 2 rivers, and 1 drinking water reservoir. The pipeline crosses 4 roads and 2 mechanized farming roads. There are geological disaster sensitive points in the area, and the burial depth basically meets the requirements. The population density is small, generally less than 15 households, and most of them are Class I areas. According to previous accident investigation forms, the pipeline is a relatively safe gas field water transmission pipeline.

[0140] The comprehensive evaluation method was used to analyze and evaluate the gas field water pipeline item by item. The results are shown in Figure 3 .like Figure 3 As shown, Figure 3This is the risk assessment result diagram of the gas field water pipeline of C39-C1 wells. Figure 3 The boundary lines of medium, low and medium risk areas are shown in the figure. According to the scoring lines of the C39-C1 gas field water pipeline in the figure, it can be concluded that the risk values ​​of each section of the pipeline are high and low, with a minimum of 12 points, a maximum of 57.5 points, and an average of 29.8 points. Most of the pipeline sections are in the low risk area.

[0141] like Figure 3 As shown in the figure, the overall risk of the pipeline is low, and most of it is within the low risk range, but the risk value of section 9 is relatively high because there are exposed parts of the pipeline in this section or the buried depth (0.2m) does not meet the construction standard. At the same time, this section of the pipeline crosses a highway and two rivers. Once a leak occurs, it will have a great impact on the normal use of surrounding water sources and highways.

[0142] In an embodiment of the present invention, the terminal can obtain the historical transportation data of the gas field water transmission pipeline to be evaluated in the historical transportation process; and determine multiple evaluation indicators of the gas field water transmission pipeline based on the historical transportation data, and divide the gas field water transmission pipeline into multiple gas field water transmission sub-pipelines based on the multiple evaluation indicators; collect multiple pipeline information of each gas field water transmission sub-pipeline; determine the score of each gas field water transmission sub-pipeline in each evaluation indicator based on the pipeline information of each gas field water transmission sub-pipeline and the scoring standard of each evaluation indicator; determine the risk value of each gas field water transmission sub-pipeline based on the score of each gas field water transmission sub-pipeline in multiple evaluation indicators; determine the risk level of each gas field water transmission sub-pipeline based on the risk value of each gas field water transmission sub-pipeline. Since the entire evaluation process evaluates the transmission pipeline, selects evaluation indicators from multiple angles, segments the transmission pipeline, and determines the risk level of each transmission sub-pipeline based on the risk value of each transmission sub-pipeline, the reliability and accuracy of the gas field water transmission pipeline evaluation are improved. Moreover, the whole process is easy to operate, which saves the user's operation time and improves the evaluation efficiency.

[0143] Figure 4 Schematic diagram of a safety assessment system for gas field water pipeline provided by an embodiment of the present invention. Figure 4 The safety assessment system includes a terminal 401, a database server 402, a plurality of management servers 403, and a plurality of sensors 404. The plurality of sensors 404 are respectively installed on the gas field water transmission pipeline, and the plurality of sensors 404 are connected to the plurality of management servers 403. The plurality of management servers 403, the database server 402, and the terminal 401 are connected to each other;

[0144] (4-1) The database server 402 obtains historical transportation data of the gas field water transportation pipeline to be evaluated during the historical transportation process, and sends the historical transportation data to the terminal 401;

[0145] Among them, a plurality of sensors 104 are installed on the gas field water delivery pipeline. In the historical delivery process, the database server 102 is also used to obtain the historical delivery data of the historical delivery process from the plurality of sensors 104 in advance. Specifically, the plurality of sensors 104 are connected to the plurality of management servers 103. The plurality of sensors 104 are used to transmit the historical delivery data to the management server 103; the management server 103 is also used to receive the historical delivery data of the plurality of sensors 104 and send the historical delivery data to the database server 102; the database server 102 is also used to receive the historical delivery data of the management server 103.

[0146] It should be noted that the sensors 104 can be evenly distributed on the gas field water delivery pipeline, the sensors 104 and the management server 103 can be connected by wired connection or wireless connection, and the management server 103 and the database server 102 can be connected by wireless connection. The wired connection can be a wired connection through twisted pair, coaxial cable or optical fiber, etc. The wireless connection can be a wireless connection through WiFi, local area network connection, Internet, etc.

[0147] It should be noted that the safety assessment system is based on the role of the database server 402 in (4-1) and can be used to implement the process of the above step 201. That is, in the above step 201, the terminal obtains the historical transmission data based on the role of the database server 402.

[0148] (4-2) The terminal 401 determines multiple evaluation indicators of the gas field water transmission pipeline based on the historical transmission data, and determines the weight and scoring standard of each of the multiple evaluation indicators, wherein the multiple evaluation indicators are used to indicate factors causing damage to the gas field water transmission pipeline and consequences caused by the damage to the gas field water transmission pipeline;

[0149] It should be noted that the security assessment system is based on the role of the terminal 401 in (4-2) to implement the process of the above steps 202-203. The process implemented based on this role is the same as the above steps 202-203, and will not be repeated here.

[0150] (4-3) The terminal 401 divides the gas field water transmission pipeline to be evaluated into multiple gas field water transmission sub-pipelines according to multiple evaluation indicators of the gas field water transmission pipeline to be evaluated;

[0151] (4-4) Each sensor 404 collects pipeline information of the gas field water delivery sub-pipeline at the location where each sensor 404 is installed, and sends the collected pipeline information to the management server 403 corresponding to each section of the gas field water delivery sub-pipeline;

[0152] (4-5) Each management server 403 sends pipeline information of each gas field water transport sub-pipeline corresponding to each management server 403 to the terminal 401;

[0153] It should be noted that the security assessment system is based on the functions of the terminal 401, the sensor 404 and the management server 403 in (4-3), (4-4) and (4-5) to implement the process of the above step 204. The process implemented based on this function is the same as the process of the above step 204, and will not be repeated here.

[0154] (4-6) The terminal 401 is further used to receive multiple pipeline information of multiple gas field water delivery sub-pipelines from multiple management servers 403, and determine the score of each gas field water delivery sub-pipeline in each evaluation indicator according to the pipeline information of each gas field water delivery sub-pipeline, the weight of each evaluation indicator and the scoring standard;

[0155] It should be noted that the security assessment system is based on the role of the terminal 401 in (4-6) to implement the process of the above step 205. The process implemented based on this role is the same as the above step 205, and will not be repeated here.

[0156] (4-7) The terminal 401 is further used to determine the risk value of each section of the gas field water delivery sub-pipeline according to the scores of each section of the gas field water delivery sub-pipeline in multiple evaluation indicators;

[0157] It should be noted that the security assessment system is based on the function of the terminal 401 in (4-7) to implement the process of the above step 206. The process implemented based on this function is the same as the above step 206, and will not be repeated here.

[0158] (4-8) The terminal 401 is also used to determine the risk level of each section of the gas field water transportation sub-pipeline according to the risk value of each section of the gas field water transportation sub-pipeline.

[0159] It should be noted that the security assessment system is based on the function of the terminal 401 in (4-8) to implement the process of the above step 207. The process implemented based on this function is the same as the above step 207, and will not be repeated here.

[0160] Optionally, the terminal 401 includes a display module, a data acquisition module, and a data processing module;

[0161] The display module is used to display a plurality of first Sadie scales;

[0162] The data acquisition module is used to obtain the score of each evaluation index in the multiple first Sadie scales, each of which carries multiple evaluation indexes, and is used to indicate the importance of each evaluation index on the safety of the gas field water transmission pipeline, and to score each evaluation index;

[0163] The data processing module is used to determine the weight of each evaluation indicator according to the score of each evaluation indicator in the first Sadie scale.

[0164] Optionally, the terminal 401 includes a data processing module;

[0165] The data processing module is used to calculate the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline according to the scores of each section of the gas field water delivery sub-pipeline in multiple evaluation indicators; according to the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline, determine the risk value of each section of the gas field water delivery sub-pipeline through the following formula 1;

[0166] Formula 1: R = S × C;

[0167] Among them, R refers to the risk value of each section of gas field water delivery sub-pipeline, S refers to the damage risk value of each section of gas field water delivery sub-pipeline, S = a7S7+a2S2+…+a i S i +…+a x S x , S i is the i-th evaluation index among the evaluation indexes of the possibility of damage to the gas field water pipeline, a i is the weight of the i-th evaluation index, C refers to the leakage consequence risk value of each section of the gas field water transmission sub-pipeline, C = b7C7+b2C2+…+b j C j +…+b y C y , C j is the jth evaluation index among the evaluation indexes of the consequences caused by the leakage of gas field water pipeline, b j is the weight of the jth evaluation indicator.

[0168] Optionally, the security assessment system further includes a storage server;

[0169] The storage server is also used to send the preset segmentation principle of the gas field water transmission pipeline to the terminal 401;

[0170] The terminal 401 is further used to receive the preset segmentation principle of the storage server, and insert segmentation points into the gas field water delivery pipeline according to the preset segmentation principle to obtain multiple gas field water delivery sub-pipelines;

[0171] The preset segmentation principle is: based on the preset sub-evaluation index of the gas field water transmission pipeline, a segmentation point is inserted at the pipeline where the variation range of the pipeline information corresponding to the preset sub-evaluation index exceeds the preset range.

[0172] In an embodiment of the present invention, the terminal can obtain the historical transportation data of the gas field water transmission pipeline to be evaluated in the historical transportation process; and determine multiple evaluation indicators of the gas field water transmission pipeline based on the historical transportation data, and divide the gas field water transmission pipeline into multiple gas field water transmission sub-pipelines based on the multiple evaluation indicators; collect multiple pipeline information of each gas field water transmission sub-pipeline; determine the score of each gas field water transmission sub-pipeline in each evaluation indicator based on the pipeline information of each gas field water transmission sub-pipeline and the scoring standard of each evaluation indicator; determine the risk value of each gas field water transmission sub-pipeline based on the score of each gas field water transmission sub-pipeline in multiple evaluation indicators; determine the risk level of each gas field water transmission sub-pipeline based on the risk value of each gas field water transmission sub-pipeline. Since the entire evaluation process evaluates the transmission pipeline, selects evaluation indicators from multiple angles, segments the transmission pipeline, and determines the risk level of each transmission sub-pipeline based on the risk value of each transmission sub-pipeline, the reliability and accuracy of the gas field water transmission pipeline evaluation are improved. Moreover, the whole process is easy to operate, which saves the user's operation time and improves the evaluation efficiency.

[0173] All the above optional technical solutions can be arbitrarily combined to form optional embodiments of the present disclosure, and will not be described in detail here.

[0174] It should be noted that: the safety assessment system for gas field water transmission pipeline provided in the above embodiment only uses the division of the above functional modules as an example for the safety assessment of the gas field water transmission pipeline. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the system is divided into different functional modules to complete all or part of the functions described above. In addition, the safety assessment system for gas field water transmission pipeline provided in the above embodiment and the safety assessment method embodiment for gas field water transmission pipeline belong to the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0175] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0176] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for safety assessment of a gas field water pipeline, characterized in that: The method comprises: Obtain historical transportation data of the gas field water transportation pipeline to be evaluated during the historical transportation process; Determine, based on the historical transportation data, a plurality of evaluation indicators of the gas field water transportation pipeline, wherein the plurality of evaluation indicators are used to indicate factors causing damage to the gas field water transportation pipeline and consequences caused by the damage to the gas field water transportation pipeline, and each of the plurality of evaluation indicators includes a plurality of sub-evaluation indicators; Determining the weight and scoring criteria of each evaluation indicator in the plurality of evaluation indicators, wherein the weight of each evaluation indicator is determined by using a Sadie scale; Obtaining a preset segmentation principle of the gas field water delivery pipeline, inserting segmentation points into the gas field water delivery pipeline, and obtaining multiple segments of gas field water delivery sub-pipelines; Wherein, the preset segmentation principle is: based on the preset sub-evaluation index of the gas field water transmission pipeline, a segmentation point is inserted at the pipeline where the change range of the pipeline information corresponding to the preset sub-evaluation index exceeds the preset range, and the preset sub-evaluation index includes: at least one of the population density, soil conditions, anti-corrosion layer conditions of the environment where the gas field water transmission pipeline is located, working time of the pipeline, and whether it is a high consequence area; Collect multiple pipeline information of each gas field water delivery sub-pipeline; Determine the score of each section of the gas field water delivery sub-pipeline in each evaluation indicator according to the pipeline information of each section of the gas field water delivery sub-pipeline, the weight of each evaluation indicator and the scoring standard; For each section of the gas field water delivery sub-pipeline, according to the scores of each section of the gas field water delivery sub-pipeline in multiple evaluation indicators, the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline are calculated; According to the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline, the risk value of each section of the gas field water delivery sub-pipeline is determined by the following formula 1; Formula 1: R=S×C; Among them, R refers to the risk value of each section of gas field water delivery sub-pipeline, S refers to the damage risk value of each section of gas field water delivery sub-pipeline, S=a1S1+a2S2+…+a i S i +…+a x S x , S i is the i-th evaluation index among the evaluation indexes of the possibility of damage to the gas field water pipeline, a i is the weight of the i-th evaluation index, C refers to the risk value of leakage consequences of each gas field water transmission sub-pipeline, C = b1C1+b2C2+…+b j C j +…+b y C y , C j is the jth evaluation index among the evaluation indexes of the consequences caused by the leakage of gas field water pipeline, b j is the weight of the jth evaluation index. The evaluation indexes from the perspective of the possibility of damage to the gas field water pipeline include: third-party damage factors, design factors, operating status, and regional environmental factors; the evaluation indexes from the perspective of the consequences caused by the leakage of the gas field water pipeline include: medium influencing factors and leakage influencing factors; The risk level of each section of the gas field water transportation sub-pipeline is determined according to the risk value of each section of the gas field water transportation sub-pipeline.

2. The method according to claim 1, characterized in that: Determining the weight and scoring criteria of each evaluation indicator in the multiple evaluation indicators includes: Displaying a plurality of first Sadie scales, obtaining a score for each evaluation index in the plurality of first Sadie scales, each first Sadie scale carrying a plurality of evaluation indexes for indicating the importance of each evaluation index on the safety of the gas field water transmission pipeline, and scoring each evaluation index; Determining the weight of each evaluation indicator according to the score of each evaluation indicator in the first Sadie scale; The scoring criteria for each evaluation indicator are obtained from the local storage space of the terminal.

3. The method according to claim 2, characterized in that Each evaluation indicator includes a plurality of sub-evaluation indicators. Accordingly, after determining the weight of each evaluation indicator according to the score of each evaluation indicator in the first Sadie scale, the method further includes: For each evaluation indicator, display a second Sadie scale table of each evaluation indicator, and obtain a score of each sub-evaluation indicator in the second Sadie scale table, where the second Sadie scale table carries multiple sub-evaluation indicators included in each evaluation indicator; According to the score of each sub-evaluation indicator in the second Sadie scale, the weight of each sub-evaluation indicator in each evaluation indicator is determined.

4. The method according to claim 1, characterized in that The gas field water delivery pipeline is a gas field water delivery pipeline made of glass fiber reinforced plastics.

5. A safety assessment system for gas field water pipeline, characterized in that: The safety assessment system includes a terminal, a database server, a plurality of management servers, and a plurality of sensors, wherein the plurality of sensors are respectively installed on the gas field water transmission pipeline, the plurality of sensors are connected to the plurality of management servers, and the plurality of management servers, the database server and the terminal are connected to each other; The database server obtains historical transportation data of the gas field water transportation pipeline to be evaluated during the historical transportation process, and sends the historical transportation data to the terminal; The terminal determines, based on the historical transportation data, a plurality of evaluation indicators of the gas field water transportation pipeline, and determines a weight and a scoring standard for each of the plurality of evaluation indicators, wherein the plurality of evaluation indicators are used to indicate factors causing damage to the gas field water transportation pipeline and consequences caused by the damage to the gas field water transportation pipeline, each of the plurality of evaluation indicators includes a plurality of sub-evaluation indicators, and the weight of each evaluation indicator is determined by a Sadie scale; The terminal divides the gas field water transmission pipeline into multiple gas field water transmission sub-pipelines according to multiple evaluation indicators of the gas field water transmission pipeline to be evaluated; Each sensor collects pipeline information of the gas field water delivery sub-pipeline at the location where each sensor is installed, and sends the collected pipeline information to the management server corresponding to each section of the gas field water delivery sub-pipeline; Each management server sends pipeline information of each gas field water transmission sub-pipeline corresponding to each management server to the terminal; The terminal is further used to receive multiple pipeline information of multiple sections of gas field water delivery sub-pipelines from multiple management servers, and determine the score of each section of the gas field water delivery sub-pipeline in each evaluation indicator according to the pipeline information of each section of the gas field water delivery sub-pipeline, the weight of each evaluation indicator and the scoring standard; The terminal is further used to determine the risk value of each section of the gas field water delivery sub-pipeline according to the scores of each section of the gas field water delivery sub-pipeline in multiple evaluation indicators; The terminal is further used to determine the risk level of each section of the gas field water delivery sub-pipeline according to the risk value of each section of the gas field water delivery sub-pipeline; The terminal includes a data processing module; The data processing module is used to calculate the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline according to the scores of each section of the gas field water delivery sub-pipeline in multiple evaluation indicators; According to the damage risk value and leakage consequence risk value of each section of the gas field water delivery sub-pipeline, the risk value of each section of the gas field water delivery sub-pipeline is determined by the following formula 1; Formula 1: R=S×C; Among them, R refers to the risk value of each section of gas field water delivery sub-pipeline, S refers to the damage risk value of each section of gas field water delivery sub-pipeline, S=a1S1+a2S2+…+a i S i +…+a x S x , S i is the i-th evaluation index among the evaluation indexes of the possibility of damage to the gas field water pipeline, a i is the weight of the i-th evaluation index, C refers to the risk value of leakage consequences of each gas field water transmission sub-pipeline, C = b1C1+b2C2+…+b j C j +…+b y C y , C j is the jth evaluation index among the evaluation indexes of the consequences caused by the leakage of gas field water pipeline, b j is the weight of the jth evaluation index; the evaluation indexes from the perspective of the possibility of damage to the gas field water pipeline include: third-party damage factors, design factors, operating status, and regional environmental factors; the evaluation indexes from the perspective of the consequences caused by the leakage of the gas field water pipeline include: medium influencing factors and leakage influencing factors; The security assessment system also includes a storage server; The storage server is further used to send the preset segmentation principle of the gas field water transmission pipeline to the terminal; The terminal is further used to receive the preset segmentation principle of the storage server, and insert segmentation points into the gas field water delivery pipeline according to the preset segmentation principle to obtain multiple gas field water delivery sub-pipelines; Among them, the preset segmentation principle is: based on the preset sub-evaluation indicators of the gas field water transmission pipeline, segmentation points are inserted at the pipeline where the change range of the pipeline information corresponding to the preset sub-evaluation indicators exceeds the preset range, and the preset sub-evaluation indicators include: the population density of the environment where the gas field water transmission pipeline is located, the soil conditions, the anti-corrosion layer condition of the pipeline, the working time of the pipeline, and whether it is a high consequence area. At least one of them.

6. The safety assessment system according to claim 5, characterized in that: The terminal includes a display module, a data acquisition module, and a data processing module; The display module is used to display a plurality of first Sadie scales; The data acquisition module is used to obtain the score of each evaluation index in the plurality of first Sadie scales, each of which carries a plurality of evaluation indexes, and is used to indicate the importance of each evaluation index on the safety of the gas field water transmission pipeline, and to score each evaluation index; The data processing module is used to determine the weight of each evaluation indicator according to the score of each evaluation indicator in the first Sadie scale.

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