A method and device for locating a leak in an oil and gas gathering pipeline

Abstract

The present application relates to the technical field of leakage prevention and control, and particularly relates to a positioning method and device for a leakage position of an oil and gas gathering pipeline, which outputs a first leakage diffusion track by positioning a real-time pipeline structure of the oil and gas gathering pipeline, outputs a second leakage diffusion track by the real-time pipeline structure and a historical leakage diffusion track of the oil and gas gathering pipeline, and selects at least one candidate leakage diffusion track from the first leakage diffusion track and the second leakage diffusion track for positioning the oil and gas gathering pipeline. The present application can obtain a leakage source intensity and a leakage source position according to the real-time pipeline structure of the oil and gas gathering pipeline, the real-time pipeline structure and the historical leakage diffusion track of the oil and gas gathering pipeline, and realizes accurate positioning of a dangerous gas leakage source.

Description

Technical Field

[0001] This invention relates to the field of leakage prevention and control technology, and in particular to a method and apparatus for locating the leakage location of an oil and gas gathering and transportation pipeline. Background Technology

[0002] In the event of a more serious leak of flammable, explosive, or toxic gases, failure to locate the leak source in a timely manner could potentially trigger a chain reaction of disasters, including fires and explosions, severely threatening personal safety and property. If mobile robots can be used to quickly and accurately locate the gas source in the early stages of a disaster, the damage can be minimized. Therefore, research into disaster source localization technology in gas leak scenarios is of great significance.

[0003] For pipeline location technology in gas leak scenarios, there are three main existing technologies: traditional environmental monitoring systems, wireless sensor network location technology, and small mobile robot pipeline location technology. Traditional environmental monitoring systems primarily deploy sensors in space via wired connections. Their main drawbacks are high cost and the potential for data loss due to line damage during disasters. Wireless sensor network location technology deploys sensors wirelessly, but its main drawbacks are the need for dense deployment and high cost. Small mobile robot pipeline location technology uses a mobile robot as a platform, equipped with multiple different types of sensors, to perceive the environment from multiple perspectives and thus infer the specific location of the gas source. Furthermore, locating the odor source during a gas leak is too dangerous for humans; sending robots into the hazardous environment for autonomous search operations is a good option. Therefore, pipeline location technology using a robotic mobile platform equipped with multiple sensors plays a significant role in disaster relief, but it is also very challenging. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: According to a first aspect of the present invention, the present invention claims protection for a method for locating the leak location in an oil and gas gathering and transportation pipeline, characterized in that it comprises: By locating the real-time pipeline structure of the oil and gas gathering and transportation pipeline, the first leakage diffusion trajectory is output; Based on the real-time pipeline structure and the historical leakage diffusion trajectory of the located oil and gas gathering and transportation pipeline, a second leakage diffusion trajectory is output. At least one candidate leakage diffusion trajectory is selected from the first leakage diffusion trajectory and the second leakage diffusion trajectory for locating the oil and gas gathering and transportation pipeline.

[0005] Furthermore, based on the real-time pipeline structure and the historical leakage diffusion trajectory of the located oil and gas gathering and transportation pipeline, a second leakage diffusion trajectory is output, including: Obtain the historical leakage and diffusion trajectory of the located oil and gas gathering and transportation pipeline with the real-time pipeline structure end as the pipeline structure end; The output is the tangent molecular trajectory from the front end of the real-time pipeline structure to the front end of the pipeline structure in the interval of the historical leakage diffusion trajectory; Connect the tangent trajectory with the terminating sub-trajectory in the historical leakage diffusion trajectory from the front end of the interval pipeline structure to the end of the real-time pipeline structure to obtain the second leakage diffusion trajectory; Selecting at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory includes: Based on the trajectory characteristics of the first leakage diffusion trajectory and the second leakage diffusion trajectory, at least one candidate leakage diffusion trajectory is selected from the first leakage diffusion trajectory and the second leakage diffusion trajectory; The trajectory features include at least one of the following: the external environment of the location of the oil and gas gathering and transportation pipeline and the leakage diffusion trajectory; the number of pipelines in the interest section of the location of the oil and gas gathering and transportation pipeline included in the leakage diffusion trajectory; the gas concentration in the pipelines in the interest section; and the gas concentration in the leakage diffusion trajectory. After selecting at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory, the method further includes: The location inference of the candidate leakage diffusion trajectory is generated by using the location features of the candidate leakage diffusion trajectory. The positioning features include at least one of the following: trajectory length, external environment of the positioning oil and gas gathering and transportation pipeline trajectory, and pipeline gas concentration in the area of ​​interest of the positioning oil and gas gathering and transportation pipeline.

[0006] Furthermore, after selecting at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory, the method further includes: In the process of using the candidate leakage diffusion trajectory as the location of the oil and gas gathering and transportation pipeline accident, the pipeline in the interest section of the location of the oil and gas gathering and transportation pipeline in the candidate leakage diffusion trajectory is taken as the candidate interest section pipeline. Generate the coordinate information of the candidate interest interval pipeline; Generating the coordinate information of the candidate interest interval pipeline includes: Determine the gas concentration rise and fall information of the pipeline in the candidate area of ​​interest; A trajectory selection reference is generated based on the gas concentration rise and fall information of the pipeline in the candidate interest interval; The coordinate information of the candidate interest interval pipeline is generated using the gas concentration rise and fall information of the pipeline in the candidate interest interval and / or the trajectory selection reference. After selecting at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory, the method further includes: If the external environment of the location oil and gas gathering and transportation pipeline to the real-time diffusion zone pipeline is detected to be greater than the external environment threshold, the coordinate information of the risk leakage point in the real-time diffusion zone pipeline will be reduced. The risk leakage points include at least one of the following: pipe bends, water-land pipe junctions.

[0007] Furthermore, the method also includes: Based on the risk factor characteristics of the historical leakage and diffusion trajectory, the external environment of the location oil and gas gathering and transportation pipeline on the historical leakage and diffusion trajectory is determined; The risk factor characteristics of the historical leakage diffusion trajectory include at least one of the following: the pipeline loss mode, pipeline loss time, and unexpected mode of the historical leakage diffusion trajectory; The method further includes: High-risk historical trajectories with high-risk behavior are selected from historical leakage and diffusion trajectories at the ends of oil and gas gathering and transportation pipelines with the same real-time pipeline structure, as well as predicted historical trajectories; Compare the high-risk historical trajectory with the predicted historical trajectory to obtain the difference interval pipeline in the high-risk historical trajectory; Based on the gas concentration information of the high-frequency leakage section pipeline in the differential section pipeline, the pipeline of interest for locating the oil and gas gathering and transportation pipeline is selected from the high-frequency leakage section pipelines included in the differential section pipeline.

[0008] Furthermore, high-risk historical trajectories exhibiting high-risk behavior are selected from historical leakage diffusion trajectories of pipelines with the same real-time pipeline structure at their ends, including at least one of the following: If the leak diffusion trajectory selected from at least two candidate leak diffusion trajectories provided by the trajectory output interface for locating the oil and gas gathering and transportation pipeline is different from the predicted leak diffusion trajectory for locating the oil and gas gathering and transportation pipeline, then the selected leak diffusion trajectory will be identified as a high-risk historical trajectory. If the location of the oil and gas gathering and transportation pipeline changes to another leakage diffusion trajectory during the diffusion process along any leakage diffusion trajectory, then the leakage diffusion trajectory is identified as a high-risk historical trajectory. If an explosion event is detected during the spread of any leak along any leak diffusion trajectory of the located oil and gas gathering and transportation pipeline, then the leak diffusion trajectory is identified as a high-risk historical trajectory. Before selecting the section of interest pipeline for locating the oil and gas gathering and transportation pipeline from the high-frequency leakage section pipeline included in the differential section pipeline, the process further includes: By using historical accident data from the gas pipeline, the high-frequency leakage section of the gas pipeline can be identified. The method further includes: During the diffusion process, the real-time pipeline structure front end of the oil and gas gathering and transportation pipeline is updated, and a new candidate leakage diffusion trajectory is output from the updated real-time pipeline structure front end to the real-time pipeline structure end. The new candidate leakage diffusion trajectory is compared with the real-time diffusion candidate leakage diffusion trajectory, and the comparison result is used to determine whether to generate a trajectory change event.

[0009] According to a second aspect of the present invention, the present invention claims protection for a device for locating the location of a leak in an oil and gas gathering and transportation pipeline, characterized in that the device comprises: The first trajectory output module is used to output the first leakage diffusion trajectory by locating the real-time pipeline structure of the oil and gas gathering and transportation pipeline; The second trajectory output module is used to output a second leakage diffusion trajectory based on the real-time pipeline structure and the historical leakage diffusion trajectory of the oil and gas gathering and transportation pipeline. The trajectory positioning module is used to select at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory for positioning the oil and gas gathering and transportation pipeline.

[0010] Furthermore, the second trajectory output module includes: The historical trajectory acquisition unit is used to acquire the historical leakage and diffusion trajectory of the located oil and gas gathering and transportation pipeline with the real-time pipeline structure end as the pipeline structure end; Sub-trajectory output unit outputs the tangent molecular trajectory from the front end of the real-time pipeline structure to the front end of the pipeline structure in the interval of the historical leakage diffusion trajectory; Connect the tangent trajectory with the terminating sub-trajectory in the historical leakage diffusion trajectory from the front end of the interval pipeline structure to the end of the real-time pipeline structure to obtain the second leakage diffusion trajectory; The trajectory positioning module is specifically used for: Based on the trajectory characteristics of the first leakage diffusion trajectory and the second leakage diffusion trajectory, at least one candidate leakage diffusion trajectory is selected from the first leakage diffusion trajectory and the second leakage diffusion trajectory; The trajectory features include at least one of the following: the external environment of the location of the oil and gas gathering and transportation pipeline and the leakage diffusion trajectory; the number of pipelines in the interest section of the location of the oil and gas gathering and transportation pipeline included in the leakage diffusion trajectory; the gas concentration in the pipelines in the interest section; and the gas concentration in the leakage diffusion trajectory. The device further includes: The location inference generation module is used to generate location inference for the candidate leakage diffusion trajectory based on the location features of the candidate leakage diffusion trajectory. The positioning features include at least one of the following: trajectory length, external environment of the positioning oil and gas gathering and transportation pipeline trajectory, and pipeline gas concentration in the area of ​​interest of the positioning oil and gas gathering and transportation pipeline.

[0011] Furthermore, the device also includes: The candidate concern interval pipeline determination module is used to identify the pipelines in the concern interval of the located oil and gas gathering and transportation pipeline in the candidate leakage diffusion trajectory as candidate concern interval pipelines during the process of using the candidate leakage diffusion trajectory as the location of the oil and gas gathering and transportation pipeline accident. The coordinate information generation module is used to generate the coordinate information of the candidate interest interval pipeline; The coordinate information generation module includes: A gas concentration determination unit is used to determine the gas concentration rise and fall information of the pipeline in the candidate area of ​​interest. The trajectory selection reference generation unit is used to generate a trajectory selection reference based on the gas concentration rise and fall information of the pipeline in the candidate interest interval; The coordinate information generation unit is used to generate the coordinate information of the candidate interest interval pipe by using the gas concentration rise and fall information of the candidate interest interval pipe and / or the trajectory selection reference. After selecting at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory, the device further includes: If the external environment of the location oil and gas gathering and transportation pipeline to the real-time diffusion zone pipeline is detected to be greater than the external environment threshold, the coordinate information of the risk leakage point in the real-time diffusion zone pipeline will be reduced. The risk leakage points include at least one of the following: pipe bends, water-land pipe junctions.

[0012] Furthermore, the device also includes: Based on the risk factor characteristics of the historical leakage and diffusion trajectory, the external environment of the location oil and gas gathering and transportation pipeline on the historical leakage and diffusion trajectory is determined; The risk factor characteristics of the historical leakage diffusion trajectory include at least one of the following: the pipeline loss mode, pipeline loss time, and unexpected mode of the historical leakage diffusion trajectory; The device further includes: High-risk historical trajectories with high-risk behavior are selected from historical leakage and diffusion trajectories at the ends of oil and gas gathering and transportation pipelines with the same real-time pipeline structure, as well as predicted historical trajectories; Compare the high-risk historical trajectory with the predicted historical trajectory to obtain the difference interval pipeline in the high-risk historical trajectory; Based on the gas concentration information of the high-frequency leakage section pipeline in the differential section pipeline, the pipeline of interest for locating the oil and gas gathering and transportation pipeline is selected from the high-frequency leakage section pipelines included in the differential section pipeline.

[0013] Furthermore, high-risk historical trajectories exhibiting high-risk behavior are selected from historical leakage diffusion trajectories of pipelines with the same real-time pipeline structure at their ends, including at least one of the following: If the leak diffusion trajectory selected from at least two candidate leak diffusion trajectories provided by the trajectory output interface for locating the oil and gas gathering and transportation pipeline is different from the predicted leak diffusion trajectory for locating the oil and gas gathering and transportation pipeline, then the selected leak diffusion trajectory will be identified as a high-risk historical trajectory. If the location of the oil and gas gathering and transportation pipeline changes to another leakage diffusion trajectory during the diffusion process along any leakage diffusion trajectory, then the leakage diffusion trajectory is identified as a high-risk historical trajectory. If an explosion event is detected during the spread of any leak along any leak diffusion trajectory of the located oil and gas gathering and transportation pipeline, then the leak diffusion trajectory is identified as a high-risk historical trajectory. Before selecting the section of interest pipeline for locating the oil and gas gathering and transportation pipeline from the high-frequency leakage section pipeline included in the differential section pipeline, the process further includes: By using historical accident data from the gas pipeline, the high-frequency leakage section of the gas pipeline can be identified. The device further includes: During the diffusion process, the real-time pipeline structure front end of the oil and gas gathering and transportation pipeline is updated, and a new candidate leakage diffusion trajectory is output from the updated real-time pipeline structure front end to the real-time pipeline structure end. The new candidate leakage diffusion trajectory is compared with the real-time diffusion candidate leakage diffusion trajectory, and the comparison result is used to determine whether to generate a trajectory change event.

[0014] This invention relates to the field of leakage prevention and control technology, and in particular to a method and apparatus for locating the leakage location of oil and gas gathering and transportation pipelines. By locating the real-time pipeline structure of the oil and gas gathering and transportation pipeline, a first leakage diffusion trajectory is output; based on the real-time pipeline structure and the historical leakage diffusion trajectories of the located oil and gas gathering and transportation pipeline, a second leakage diffusion trajectory is output; at least one candidate leakage diffusion trajectory is selected from the first and second leakage diffusion trajectories for locating the located oil and gas gathering and transportation pipeline. This invention can obtain the leakage source intensity and leakage source location based on the real-time pipeline structure, the historical leakage diffusion trajectories of the located oil and gas gathering and transportation pipeline, thus achieving precise location of hazardous gas leakage sources. Attached Figure Description

[0015] Figure 1This is a flowchart illustrating the process of the method for locating the leak location in an oil and gas gathering and transportation pipeline, as claimed in an embodiment of the present invention. Figure 2 This is a flowchart illustrating the second method for locating the leak location in an oil and gas gathering and transportation pipeline, as claimed in this embodiment of the invention. Figure 3 This is a third flowchart illustrating the method for locating the leak location in an oil and gas gathering and transportation pipeline, as claimed in this embodiment of the invention. Figure 4 This is a structural block diagram of a device for locating the location of a leak in an oil and gas gathering and transportation pipeline, as claimed in an embodiment of the present invention. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0017] The terms "first," "second," and "third" used in this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this invention are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the accompanying drawings). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0018] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Example

[0019] Figure 1 This is a flowchart of a method for locating the location of a leak in an oil and gas gathering and transportation pipeline provided in Embodiment 1 of the present invention. This embodiment can be applied to provide accurate information to servers in case of unexpected situations. The method can be executed by a device for locating the location of a leak in an oil and gas gathering and transportation pipeline. This device can be implemented in software and / or hardware and can be integrated into an electronic device, such as an in-vehicle terminal or a mobile terminal such as a mobile phone or tablet computer.

[0020] like Figure 1 As shown, the method for locating the leak in the oil and gas gathering and transportation pipeline specifically includes: S101. By locating the real-time pipeline structure of the oil and gas gathering and transportation pipeline, the first leakage diffusion trajectory is output.

[0021] For example, using a weighted graph trajectory indexing algorithm, multiple leakage diffusion trajectories from the front end of the pipeline structure to the real-time end of the pipeline structure are calculated as the first leakage diffusion trajectory.

[0022] S102. Based on the real-time pipeline structure and the historical leakage diffusion trajectory of the located oil and gas gathering and transportation pipeline, output the second leakage diffusion trajectory.

[0023] Because the end of a pipeline structure has a significant impact on unexpected trajectories, different pipeline structure ends can produce completely different unexpected trajectories. In this embodiment of the invention, unexpected trajectory output is mainly for cases where the pipeline structure ends are the same. That is, a second leakage diffusion trajectory is output by using the real-time pipeline structure and the historical leakage diffusion trajectory of a positioning oil and gas gathering and transportation pipeline with the same end as that real-time pipeline structure.

[0024] For example, the second leakage diffusion trajectory can be output as follows: S1. Obtain the historical leakage and diffusion trajectory of the located oil and gas gathering and transportation pipeline with the real-time pipeline structure end as the pipeline structure end.

[0025] In this embodiment of the invention, unexpected logs from the server can be obtained in advance while offline. Unexpected trajectories at the ends of pipeline structures with the same structure are encoded, compressed, and stored using a preset encoding method, such as storage according to interval pipeline encoding. Here, interval pipelines are fundamental components of the road network, and each interval pipeline is a complete road uninterrupted by branch intersections. After determining the end of the real-time pipeline structure, the stored unexpected trajectory data is decoded to obtain the historical leakage and diffusion trajectory of the located oil and gas gathering and transportation pipeline with the real-time pipeline structure end as its pipeline end. The historical leakage and diffusion trajectory is a combination of several interval pipelines.

[0026] S2. Output the tangent molecular trajectory from the front end of the real-time pipeline structure to the front end of the pipeline structure in the interval of the historical leakage diffusion trajectory.

[0027] Since the historical leakage diffusion trajectory includes multiple interval pipelines, the front end of the interval pipeline structure is determined for each interval pipeline, and the tangent molecular trajectory from the real-time pipeline structure front end to the front end of each interval pipeline structure is output. For example, a historical leakage diffusion trajectory of a localized oil and gas gathering pipeline with a real-time pipeline structure end of D includes three interval pipelines, with the pipeline structure front ends of the three interval pipelines being A, B, and C respectively. Therefore, the historical leakage diffusion trajectory of the real-time pipeline structure end D is A→B→C→D. If the real-time pipeline structure front end is M, then the tangent molecular trajectories from M to A, M to B, and M to C are output, for example, M→A1→A, M→B1→B2→B, and M→C1→C2→C respectively.

[0028] S3. Connect the tangent trajectory with the terminating sub-trajectory from the front end of the interval pipeline structure to the end of the real-time pipeline structure in the historical leakage diffusion trajectory to obtain the second leakage diffusion trajectory.

[0029] For example, based on S2, the second leakage propagation trajectory obtained includes: M→A1→A→B→C→D, M→B1→B2→B→C→D, and M→C1→C2→C→D. It should be noted that since the output second trajectory includes some of the server's historical leakage propagation trajectories, the server's response to the output second leakage propagation trajectory is subject to certain external environmental factors.

[0030] S103. Select at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory for positioning the oil and gas gathering and transportation pipeline.

[0031] Based on S101 and S102, at least one candidate leakage diffusion trajectory can be selected from the first leakage diffusion trajectory and the second leakage diffusion trajectory through a preset selection strategy for locating the oil and gas gathering and transportation pipeline. For example, the selection can be based on trajectory time, gas concentration, etc., or other factors, which are not specifically limited here.

[0032] Furthermore, during the diffusion process, the real-time pipeline structure front end of the oil and gas gathering and transportation pipeline is updated. For example, the real-time pipeline structure front end is updated periodically, and a new candidate leakage diffusion trajectory is output from the updated real-time pipeline structure front end to the end of the real-time pipeline structure. The new candidate leakage diffusion trajectory is then compared with the real-time diffusion candidate leakage diffusion trajectory, and the comparison result determines whether to generate a trajectory change event. For example, if the new candidate leakage diffusion trajectory is faster and has a better gas concentration than the real-time diffusion candidate leakage diffusion trajectory, a trajectory change reference is generated for the server to select.

[0033] In this embodiment, by locating the real-time pipeline structure of the oil and gas gathering and transportation pipeline, a first leakage diffusion trajectory is output. Then, combined with the historical leakage diffusion trajectories of the same pipeline, a second leakage diffusion trajectory is output. At least one candidate leakage diffusion trajectory is selected from the first and second trajectories for use in locating the oil and gas gathering and transportation pipeline. The candidate leakage diffusion trajectories are selected based on the server's historical leakage diffusion trajectories. The server has certain external environmental conditions for the candidate leakage diffusion trajectories, thereby reducing the diffusion difficulty for the server. Furthermore, during the diffusion process, a new leakage diffusion trajectory is output based on the updated pipeline structure of the server. If the new leakage diffusion trajectory is more convenient than the real-time leakage diffusion trajectory, a trajectory transformation reference is generated for the server, further ensuring that a more suitable leakage diffusion trajectory is located for the server. Example

[0034] This second embodiment, based on the first embodiment, further optimizes the selection of at least one candidate leakage diffusion trajectory. The method includes: S201. By locating the real-time pipeline structure of the oil and gas gathering and transportation pipeline, the first leakage diffusion trajectory is output.

[0035] S202. Based on the real-time pipeline structure and the historical leakage diffusion trajectory of the located oil and gas gathering and transportation pipeline, output the second leakage diffusion trajectory.

[0036] S203. Based on the trajectory characteristics of the first leakage diffusion trajectory and the second leakage diffusion trajectory, select at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory for positioning the oil and gas gathering and transportation pipeline.

[0037] The trajectory characteristics include at least one of the following: the external environment of the location of the oil and gas gathering and transportation pipeline and the leakage diffusion trajectory; the number of pipelines in the interest section of the location of the oil and gas gathering and transportation pipeline included in the leakage diffusion trajectory; the gas concentration in the pipelines in the interest section; and the gas concentration in the leakage diffusion trajectory. Therefore, a leakage diffusion trajectory whose external environment meets preset conditions can be selected, or a leakage diffusion trajectory with good gas concentration in the pipelines in the interest section of the location of the oil and gas gathering and transportation pipeline can be selected to locate the location of the oil and gas gathering and transportation pipeline.

[0038] The external environment for locating the leakage and diffusion trajectory of oil and gas gathering and transportation pipelines can be obtained through analysis and mining of historical accidental data from the server. For example, the external environment for locating historical leakage and diffusion trajectories of oil and gas gathering and transportation pipelines can be determined by analyzing the risk factor characteristics of those trajectories. These risk factor characteristics include at least one of the following: the pipeline wear pattern, pipeline wear time, and accidental pattern of the historical leakage and diffusion trajectory.

[0039] The pipeline of interest range is the set of pipeline ranges that the server focuses on during the process of familiarizing itself with unexpected events at the end of the pipeline structure. This set of pipeline ranges of interest is extracted from high-frequency leakage pipeline ranges and represents a finite set of high-risk unexpected events that could affect the server. The pipeline ranges of interest for locating oil and gas gathering and transportation pipelines can also be obtained through analysis of historical unexpected data based on the location of these pipelines.

[0040] See attached document Figure 2 For example, the analysis can be performed according to the following steps: S10. Select high-risk historical trajectories with high-risk behavior from historical leakage diffusion trajectories of the ends of oil and gas gathering and transportation pipelines with the same real-time pipeline structure, and predict historical trajectories.

[0041] Specifically, the leakage diffusion trajectories at the end of the same pipeline structure of the server are integrated, and the high-frequency trajectories frequently followed by the server are used as predicted historical trajectories. High-risk historical trajectories refer to those where high-risk behaviors occur. For example, if the leakage diffusion trajectory selected from at least two candidate leakage diffusion trajectories provided by the trajectory output interface for locating the oil and gas gathering and transportation pipeline differs from the predicted leakage diffusion trajectory for locating the oil and gas gathering and transportation pipeline, then the selected leakage diffusion trajectory is determined as a high-risk historical trajectory; if the located oil and gas gathering and transportation pipeline changes to another leakage diffusion trajectory during diffusion along any leakage diffusion trajectory, then that leakage diffusion trajectory is determined as a high-risk historical trajectory; if an explosion event is detected during diffusion along any leakage diffusion trajectory for locating the oil and gas gathering and transportation pipeline, then that leakage diffusion trajectory is determined as a high-risk historical trajectory.

[0042] S20. Compare the high-risk historical trajectory with the predicted historical trajectory to obtain the difference interval pipeline in the high-risk historical trajectory.

[0043] S30. Using the gas concentration information of the high-frequency leakage section pipeline in the difference section pipeline, select the pipeline of interest for the location oil and gas gathering and transportation pipeline from the high-frequency leakage section pipeline included in the difference section pipeline.

[0044] By utilizing historical incident data from gas pipelines, high-frequency leakage zones within the pipeline network are identified. For example, the leakage time of each leakage zone is determined using historical incident data. A weighted calculation is then performed to determine the leakage probability of each zone, and zones with a leakage probability greater than a probability threshold are identified as high-frequency leakage zones. Furthermore, by using gas concentration information from high-frequency leakage zones within the differential leakage zones, the pipelines of interest in the oil and gas gathering and transportation pipeline network are selected. For instance, high-frequency leakage zones within the differential leakage zones whose real-time gas concentration information indicates a leakage status are identified as the pipelines of interest.

[0045] In this embodiment, based on historical accidental data, the server mines trajectory features such as the external environment of the leakage diffusion trajectory, the number of pipelines in the interest section of the oil and gas gathering and transportation pipeline included in the leakage diffusion trajectory, the gas concentration in the pipelines in the interest section, and the gas concentration of the leakage diffusion trajectory. Then, based on the trajectory features, at least one candidate leakage diffusion trajectory is selected from the first leakage diffusion trajectory and the second leakage diffusion trajectory and located to the server. This achieves the goal of locating a more suitable leakage diffusion trajectory to the server, thereby reducing the difficulty of diffusion for the server. Example

[0046] Figure 3 This is a flowchart of a method for locating leaks in oil and gas gathering and transportation pipelines according to Embodiment 3 of the present invention. This embodiment, based on the above embodiments, adds coordinate and trajectory location for the pipeline within the area of ​​interest. Figure 3 As shown, the method includes: S301. By locating the real-time pipeline structure of the oil and gas gathering and transportation pipeline, the first leakage diffusion trajectory is output.

[0047] S302. Based on the real-time pipeline structure and the historical leakage diffusion trajectory of the located oil and gas gathering and transportation pipeline, output the second leakage diffusion trajectory.

[0048] S303. Select at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory for positioning the oil and gas gathering and transportation pipeline.

[0049] S304. In the process of using the candidate leakage diffusion trajectory as the location of the oil and gas gathering and transportation pipeline accident, the pipeline in the interest section of the location of the oil and gas gathering and transportation pipeline in the candidate leakage diffusion trajectory is taken as the candidate interest section pipeline.

[0050] For determining the pipeline of interest for the location of oil and gas gathering and transportation pipelines, please refer to the above embodiments, which will not be repeated here.

[0051] S305. Generate the coordinate information of the candidate interest interval pipeline.

[0052] Generating the coordinate information of candidate pipelines within a specific interest region ensures that the coordinate information pushed to the server is more precise and targeted. This coordinate information includes gas concentration rise / fall information within the pipeline and trajectory selection reference based on the pipeline. For example, the coordinate information of candidate pipelines within a specific interest region can be generated according to the following steps: S11. Determine the gas concentration rise and fall information of the candidate interest interval pipeline.

[0053] For example, the rise and fall of the pipeline in the area of ​​interest can be obtained when the gas concentration is refreshed.

[0054] S21. Generate a trajectory selection reference based on the gas concentration rise and fall information of the candidate interest interval pipeline.

[0055] For example, in the event of a gas concentration leak, a reference for the change trajectory is provided.

[0056] S31. Generate the coordinate information of the candidate interest interval pipeline using the gas concentration rise and fall information of the candidate interest interval pipeline and / or the trajectory selection reference.

[0057] Coordinate information is provided to the server in the form of voice. For example, the server coordinates are "The pipeline leak in the xxx range is worsening / mitigating / continuous", and the reference is "Reference to maintain real-time trajectory / transform to xxx trajectory diffusion".

[0058] Furthermore, to reduce the interference of coordinate guidance information on the familiar route server, it is also necessary to determine the external environment of the location oil and gas gathering and transportation pipeline relative to the real-time diffusion zone pipeline. If the external environment of the location oil and gas gathering and transportation pipeline relative to the real-time diffusion zone pipeline is detected to be greater than the external environment threshold, the coordinate information of risk leakage points in the real-time diffusion zone pipeline is reduced or the coordinates are canceled. The risk leakage points include at least one of the following: turning pipeline points, water-land pipeline junction points.

[0059] In this embodiment of the invention, during a server malfunction, the system provides the server with targeted information on gas concentration fluctuations in the pipeline within a specific area of ​​interest, as well as trajectory selection references based on that area. This provides the server with coordinate information that better meets its needs. Furthermore, by reducing coordinate information at risk leakage points where the server is familiar with the trajectory, the system minimizes interference with the server. Example

[0060] Figure 4 This is a schematic diagram of the structure of the locating device for the leak location of the oil and gas gathering and transportation pipeline in Embodiment 4 of the present invention. Figure 4 As shown, the device for locating the leak location in an oil and gas gathering and transportation pipeline includes: The first trajectory output module 401 is used to output the first leakage diffusion trajectory by locating the real-time pipeline structure of the oil and gas gathering and transportation pipeline. The second trajectory output module 402 is used to output a second leakage diffusion trajectory based on the real-time pipeline structure and the historical leakage diffusion trajectory of the oil and gas gathering and transportation pipeline. The trajectory positioning module 403 is used to select at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory for positioning the oil and gas gathering and transportation pipeline.

[0061] Based on the above embodiments, the second trajectory output module includes: The historical trajectory acquisition unit is used to acquire the historical leakage and diffusion trajectory of the located oil and gas gathering and transportation pipeline with the real-time pipeline structure end as the pipeline structure end; Sub-trajectory output unit outputs the tangent molecular trajectory from the front end of the real-time pipeline structure to the front end of the pipeline structure in the interval of the historical leakage diffusion trajectory; Connecting the tangent trajectory with the terminating sub-trajectory from the front end of the interval pipeline structure to the end of the real-time pipeline structure in the historical leakage diffusion trajectory yields the second leakage diffusion trajectory.

[0062] Based on the above embodiments, the trajectory positioning module is specifically used for: Based on the trajectory characteristics of the first leakage diffusion trajectory and the second leakage diffusion trajectory, at least one candidate leakage diffusion trajectory is selected from the first leakage diffusion trajectory and the second leakage diffusion trajectory; The trajectory features include at least one of the following: the external environment of the location of the oil and gas gathering and transportation pipeline on the leakage diffusion trajectory, the number of pipelines in the interest section of the location of the oil and gas gathering and transportation pipeline included in the leakage diffusion trajectory, the gas concentration of the pipelines in the interest section, and the gas concentration of the leakage diffusion trajectory.

[0063] Based on the above embodiments, the device further includes: The location inference generation module is used to generate location inference for the candidate leakage diffusion trajectory based on the location features of the candidate leakage diffusion trajectory. The positioning features include at least one of the following: trajectory length, external environment of the positioning oil and gas gathering and transportation pipeline trajectory, and pipeline gas concentration in the area of ​​interest of the positioning oil and gas gathering and transportation pipeline.

[0064] Based on the above embodiments, the device further includes: The candidate pipeline of interest section determination module is used to identify the pipeline of interest section of the oil and gas gathering and transportation pipeline in the candidate leakage diffusion trajectory as the candidate pipeline of interest section during the accident inference process of locating oil and gas gathering and transportation pipeline using candidate leakage diffusion trajectories. The coordinate information generation module is used to generate the coordinate information of the candidate interest interval pipeline.

[0065] Based on the above embodiments, the coordinate information generation module includes: A gas concentration determination unit is used to determine the gas concentration rise and fall information of the pipeline in the candidate area of ​​interest. The trajectory selection reference generation unit is used to generate a trajectory selection reference based on the gas concentration rise and fall information of the pipeline in the candidate interest interval; The coordinate information generation unit is used to generate the coordinate information of the candidate interest interval pipeline by using the gas concentration rise and fall information of the candidate interest interval pipeline and / or the trajectory selection reference.

[0066] Based on the above embodiments, the device further includes: The risk leakage point coordinate module is used to reduce the risk leakage point coordinate information in the real-time diffusion interval pipeline if the external environment of the located oil and gas gathering and transportation pipeline is greater than the external environment threshold. The risk leakage points include at least one of the following: pipe bends, water-land pipe junctions.

[0067] Based on the above embodiments, the device further includes: The familiar route determination module is used to determine the external environment of the location oil and gas gathering and transportation pipeline to the historical leakage and diffusion trajectory based on the risk factor characteristics of the historical leakage and diffusion trajectory. The risk factor characteristics of the historical leakage diffusion trajectory include at least one of the following: the pipeline loss mode, pipeline loss time, and unexpected mode of the historical leakage diffusion trajectory.

[0068] Based on the above embodiments, the device further includes: The trajectory acquisition module is used to select high-risk historical trajectories with high-risk behavior from historical leakage diffusion trajectories of the ends of oil and gas gathering and transportation pipelines with the same real-time pipeline structure, and to predict historical trajectories. The difference interval pipeline determination module is used to compare the high-risk historical trajectory and the predicted historical trajectory to obtain the difference interval pipeline in the high-risk historical trajectory. The focus section pipeline determination module is used to select the focus section pipeline of the oil and gas gathering and transportation pipeline from the high-frequency leakage section pipelines included in the difference section pipelines by using the gas concentration information of the high-frequency leakage section pipelines in the difference section pipelines.

[0069] Based on the above embodiments, the trajectory acquisition module is used for: If the leak diffusion trajectory selected from at least two candidate leak diffusion trajectories provided by the trajectory output interface for locating the oil and gas gathering and transportation pipeline is different from the predicted leak diffusion trajectory for locating the oil and gas gathering and transportation pipeline, then the selected leak diffusion trajectory will be identified as a high-risk historical trajectory. If the location of the oil and gas gathering and transportation pipeline changes to another leakage diffusion trajectory during the diffusion process along any leakage diffusion trajectory, then the leakage diffusion trajectory is identified as a high-risk historical trajectory. If an explosion event is detected during the spread of any leak along a leak diffusion trajectory in a localized oil and gas gathering and transportation pipeline, then that leak diffusion trajectory is identified as a high-risk historical trajectory.

[0070] Based on the above embodiments, the device further includes: The high-frequency leakage section pipeline determination module is used to determine the high-frequency leakage section pipeline in the gas transmission pipeline by using historical accident data of the gas transmission pipeline.

[0071] Based on the above embodiments, the device further includes: The trajectory update module is used to update the real-time pipeline structure front end of the oil and gas gathering and transportation pipeline during the diffusion process, and output a new candidate leakage diffusion trajectory from the updated real-time pipeline structure front end to the real-time pipeline structure end. The transformation module is used to compare the new candidate leakage diffusion trajectory with the real-time diffusion candidate leakage diffusion trajectory, and determine whether to generate a trajectory transformation event based on the comparison result.

[0072] The oil and gas gathering and transportation pipeline leakage location locating device provided in the embodiments of the present invention can execute the oil and gas gathering and transportation pipeline leakage location locating method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. Example

[0073] Embodiment 5 of the present invention also provides a computer-readable storage medium storing a computer program thereon. When executed by a processor, the program implements the method for locating the leak location of an oil and gas gathering and transportation pipeline as provided in the embodiments of the present invention. The method includes: By locating the real-time pipeline structure of the oil and gas gathering and transportation pipeline, the first leakage diffusion trajectory is output; Based on the real-time pipeline structure and the historical leakage diffusion trajectory of the located oil and gas gathering and transportation pipeline, a second leakage diffusion trajectory is output. At least one candidate leakage diffusion trajectory is selected from the first leakage diffusion trajectory and the second leakage diffusion trajectory for locating the oil and gas gathering and transportation pipeline.

[0074] In the several embodiments provided by this invention, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0075] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units. The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

[0076] The specific embodiments of the invention have been described in detail above, but these are merely examples, and the invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the invention are also within the scope of this invention. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of this invention should be included within the scope of this invention.

Claims

1. A method for locating the leak location in an oil and gas gathering and transportation pipeline, characterized in that, include: By locating the real-time pipeline structure of the oil and gas gathering and transportation pipeline, the first leakage diffusion trajectory is output; Based on the real-time pipeline structure and the historical leakage diffusion trajectory of the located oil and gas gathering and transportation pipeline, a second leakage diffusion trajectory is output. At least one candidate leakage diffusion trajectory is selected from the first leakage diffusion trajectory and the second leakage diffusion trajectory for locating the oil and gas gathering and transportation pipeline. The second leakage diffusion trajectory is output by using the real-time pipeline structure and the historical leakage diffusion trajectory of the located oil and gas gathering and transportation pipeline, including: Obtain the historical leakage and diffusion trajectory of the located oil and gas gathering and transportation pipeline with the real-time pipeline structure end as the pipeline structure end; The output is the tangent molecular trajectory from the front end of the real-time pipeline structure to the front end of the pipeline structure in the interval of the historical leakage diffusion trajectory; Connect the tangent trajectory with the terminating sub-trajectory in the historical leakage diffusion trajectory from the front end of the interval pipeline structure to the end of the real-time pipeline structure to obtain the second leakage diffusion trajectory; Selecting at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory includes: Based on the trajectory characteristics of the first leakage diffusion trajectory and the second leakage diffusion trajectory, at least one candidate leakage diffusion trajectory is selected from the first leakage diffusion trajectory and the second leakage diffusion trajectory; The trajectory features include at least one of the following: the external environment of the location of the oil and gas gathering and transportation pipeline and the leakage diffusion trajectory, the number of pipelines in the interest section of the location of the oil and gas gathering and transportation pipeline included in the leakage diffusion trajectory, the gas concentration of the pipelines in the interest section, and the gas concentration of the leakage diffusion trajectory. After selecting at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory, the method further includes: The location inference of the candidate leakage diffusion trajectory is generated by using the location features of the candidate leakage diffusion trajectory. The positioning features include at least one of the following: trajectory length, external environment of the trajectory of the oil and gas gathering and transportation pipeline, and pipeline gas concentration in the area of ​​interest of the oil and gas gathering and transportation pipeline. Specifically, by using the risk factor characteristics of the historical leakage and diffusion trajectory, the external environment of the location oil and gas gathering and transportation pipeline on the historical leakage and diffusion trajectory is determined; The risk factor characteristics of the historical leakage diffusion trajectory include at least one of the following: the pipeline loss mode, pipeline loss time, and unexpected mode of the historical leakage diffusion trajectory; After selecting at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory, the method further includes: The pipeline within the range of interest of the oil and gas gathering and transportation pipeline located in the candidate leakage diffusion trajectory is selected as the candidate pipeline within the range of interest. Generate the coordinate information of the candidate interest interval pipeline; Generating the coordinate information of the candidate interest interval pipeline includes: Determine the gas concentration rise and fall information of the pipeline in the candidate area of ​​interest; A trajectory selection reference is generated based on the gas concentration rise and fall information of the pipeline in the candidate interest interval; The coordinate information of the candidate interest interval pipeline is generated using the gas concentration rise and fall information of the pipeline in the candidate interest interval and / or the trajectory selection reference.

2. The method for locating the leak location in an oil and gas gathering and transportation pipeline according to claim 1, characterized in that, After selecting at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory, the method further includes: If the external environment of the location oil and gas gathering and transportation pipeline to the real-time diffusion zone pipeline is detected to be greater than the external environment threshold, the coordinate information of the risk leakage point in the real-time diffusion zone pipeline will be reduced. The risk leakage points include at least one of the following: pipe bends, water-land pipe junctions.

3. The method according to claim 1, characterized in that, The method further includes: High-risk historical trajectories with high-risk behavior are selected from historical leakage and diffusion trajectories at the ends of oil and gas gathering and transportation pipelines with the same real-time pipeline structure, as well as predicted historical trajectories; Compare the high-risk historical trajectory with the predicted historical trajectory to obtain the difference interval pipeline in the high-risk historical trajectory; Based on the gas concentration information of the high-frequency leakage section pipeline in the differential section pipeline, the pipeline of interest for locating the oil and gas gathering and transportation pipeline is selected from the high-frequency leakage section pipelines included in the differential section pipeline.

4. The method according to claim 3, characterized in that, Select high-risk historical trajectories with high-risk behavior from historical leakage diffusion trajectories located at the ends of oil and gas gathering and transportation pipelines with the same real-time pipeline structure, including at least one of the following: If the leak diffusion trajectory selected from at least two candidate leak diffusion trajectories provided by the trajectory output interface for locating the oil and gas gathering and transportation pipeline is different from the predicted leak diffusion trajectory for locating the oil and gas gathering and transportation pipeline, then the selected leak diffusion trajectory will be identified as a high-risk historical trajectory. If the location of the oil and gas gathering and transportation pipeline changes to another leakage diffusion trajectory during the diffusion process along any leakage diffusion trajectory, then the leakage diffusion trajectory is identified as a high-risk historical trajectory. If an explosion event is detected during the spread of any leak along any leak diffusion trajectory of the located oil and gas gathering and transportation pipeline, then the leak diffusion trajectory is identified as a high-risk historical trajectory. Before selecting the section of interest pipeline for locating the oil and gas gathering and transportation pipeline from the high-frequency leakage section pipeline included in the differential section pipeline, the process further includes: By using historical accident data from the gas pipeline, the high-frequency leakage section of the gas pipeline can be identified. The method further includes: During the diffusion process, the real-time pipeline structure front end of the oil and gas gathering and transportation pipeline is updated, and a new candidate leakage diffusion trajectory is output from the updated real-time pipeline structure front end to the real-time pipeline structure end. The new candidate leakage diffusion trajectory is compared with the real-time diffusion candidate leakage diffusion trajectory, and the comparison result is used to determine whether to generate a trajectory change event.

5. A device for locating the leak location in an oil and gas gathering and transportation pipeline, characterized in that, The device includes: The first trajectory output module is used to output the first leakage diffusion trajectory by locating the real-time pipeline structure of the oil and gas gathering and transportation pipeline; The second trajectory output module is used to output a second leakage diffusion trajectory based on the real-time pipeline structure and the historical leakage diffusion trajectory of the oil and gas gathering and transportation pipeline. The trajectory positioning module is used to select at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory for positioning the oil and gas gathering and transportation pipeline. The second trajectory output module includes: The historical trajectory acquisition unit is used to acquire the historical leakage and diffusion trajectory of the located oil and gas gathering and transportation pipeline with the real-time pipeline structure end as the pipeline structure end; Sub-trajectory output unit outputs the tangent molecular trajectory from the front end of the real-time pipeline structure to the front end of the pipeline structure in the interval of the historical leakage diffusion trajectory; Connect the tangent trajectory with the terminating sub-trajectory in the historical leakage diffusion trajectory from the front end of the interval pipeline structure to the end of the real-time pipeline structure to obtain the second leakage diffusion trajectory; The trajectory positioning module is specifically used for: Based on the trajectory characteristics of the first leakage diffusion trajectory and the second leakage diffusion trajectory, at least one candidate leakage diffusion trajectory is selected from the first leakage diffusion trajectory and the second leakage diffusion trajectory; The trajectory features include at least one of the following: the external environment of the location of the oil and gas gathering and transportation pipeline and the leakage diffusion trajectory, the number of pipelines in the interest section of the location of the oil and gas gathering and transportation pipeline included in the leakage diffusion trajectory, the gas concentration of the pipelines in the interest section, and the gas concentration of the leakage diffusion trajectory. The device further includes: The location inference generation module is used to generate location inference for the candidate leakage diffusion trajectory based on the location features of the candidate leakage diffusion trajectory. The positioning features include at least one of the following: trajectory length, external environment of the trajectory of the oil and gas gathering and transportation pipeline, and pipeline gas concentration in the area of ​​interest of the oil and gas gathering and transportation pipeline. The device further includes: The familiar route determination module is used to determine the external environment of the location oil and gas gathering and transportation pipeline to the historical leakage and diffusion trajectory based on the risk factor characteristics of the historical leakage and diffusion trajectory. The risk factor characteristics of the historical leakage diffusion trajectory include at least one of the following: the pipeline loss mode, pipeline loss time, and unexpected mode of the historical leakage diffusion trajectory; The device further includes: The candidate concern interval pipeline determination module identifies the concern interval pipelines of the located oil and gas gathering and transportation pipelines in the candidate leakage diffusion trajectory as candidate concern interval pipelines. The coordinate information generation module is used to generate the coordinate information of the candidate interest interval pipeline; The coordinate information generation module includes: A gas concentration determination unit is used to determine the gas concentration rise and fall information of the pipeline in the candidate area of ​​interest. The trajectory selection reference generation unit is used to generate a trajectory selection reference based on the gas concentration rise and fall information of the pipeline in the candidate interest interval; The coordinate information generation unit is used to generate the coordinate information of the candidate interest interval pipeline by using the gas concentration rise and fall information of the candidate interest interval pipeline and / or the trajectory selection reference.

6. The apparatus according to claim 5, characterized in that, After selecting at least one candidate leakage diffusion trajectory from the first leakage diffusion trajectory and the second leakage diffusion trajectory, the device further includes: The risk leakage point coordinate module is used to reduce the risk leakage point coordinate information in the real-time diffusion interval pipeline if the external environment of the located oil and gas gathering and transportation pipeline is greater than the external environment threshold. The risk leakage points include at least one of the following: pipe bends, water-land pipe junctions.

7. The apparatus according to claim 5, characterized in that, The device further includes: The device further includes: The trajectory acquisition module is used to select high-risk historical trajectories with high-risk behavior from historical leakage diffusion trajectories of the ends of oil and gas gathering and transportation pipelines with the same real-time pipeline structure, and to predict historical trajectories. The difference interval pipeline determination module is used to compare the high-risk historical trajectory and the predicted historical trajectory to obtain the difference interval pipeline in the high-risk historical trajectory. The focus section pipeline determination module is used to select the focus section pipeline of the oil and gas gathering and transportation pipeline from the high-frequency leakage section pipelines included in the difference section pipelines by using the gas concentration information of the high-frequency leakage section pipelines in the difference section pipelines.

8. The apparatus according to claim 7, characterized in that, The trajectory acquisition module is used for: If the leak diffusion trajectory selected from at least two candidate leak diffusion trajectories provided by the trajectory output interface for locating the oil and gas gathering and transportation pipeline is different from the predicted leak diffusion trajectory for locating the oil and gas gathering and transportation pipeline, then the selected leak diffusion trajectory will be identified as a high-risk historical trajectory. If the location of the oil and gas gathering and transportation pipeline changes to another leakage diffusion trajectory during the diffusion process along any leakage diffusion trajectory, then the leakage diffusion trajectory is identified as a high-risk historical trajectory. If an explosion event is detected during the spread of any leak along any leak diffusion trajectory of the located oil and gas gathering and transportation pipeline, then the leak diffusion trajectory is identified as a high-risk historical trajectory. Before selecting the section of interest pipeline for locating the oil and gas gathering and transportation pipeline from the high-frequency leakage section pipeline included in the differential section pipeline, the process further includes: By using historical accident data from the gas pipeline, the high-frequency leakage section of the gas pipeline can be identified. The device further includes: The trajectory update module is used to update the real-time pipeline structure front end of the oil and gas gathering and transportation pipeline during the diffusion process, and output a new candidate leakage diffusion trajectory from the updated real-time pipeline structure front end to the real-time pipeline structure end. The transformation module is used to compare the new candidate leakage diffusion trajectory with the real-time diffusion candidate leakage diffusion trajectory, and determine whether to generate a trajectory transformation event based on the comparison result.

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