A method for distributed monitoring of oil and gas storage tank leaks

Abstract

The application discloses an oil and gas storage tank leakage distributed monitoring method, comprising the following steps: arranging a sensor probe head in an oil and gas storage tank and an oil and gas pipeline to obtain dynamic data of the oil and gas storage tank; obtaining geographical information of the oil and gas pipeline by positioning and navigating a path shape of the oil and gas pipeline and the sensor probe head; performing an inspection on the oil and gas storage tank based on the geographical information and the dynamic data to obtain an inspection result; and completing monitoring on the oil and gas storage tank based on the inspection result. The application can realize real-time monitoring on pressure, temperature, density and flow by arranging the sensor probe head in the oil and gas storage tank and the oil and gas pipeline, can timely discover an abnormality by sequentially performing data dynamic analysis on pressure, density and temperature, can judge an abnormality level, can send an instruction based on the abnormality level, and can avoid accident expansion.

Description

Technical Field

[0001] This invention belongs to the field of leakage monitoring technology, and particularly relates to a distributed monitoring method for oil and gas storage tank leakage. Background Technology

[0002] In existing technologies, oil and gas storage tanks and pipelines in the northwest utilize intelligent geographic information cloud platforms for feature change detection, hazard analysis, and risk identification, providing technical support for situation handling and command decision-making for relevant personnel. However, there are significant differences between the northwest and southwest regions:

[0003] First, the northwestern region has a relatively simple geographical environment, consisting of plateaus, deserts, basins, and sparse and monotonous vegetation with little vegetation cover. This is completely different from the southwestern region, which has lush vegetation, mountains and valleys, karst topography, and rocky desertification. The obstructions are completely different, and the accuracy of aerospace monitoring is completely different.

[0004] Secondly, the climate conditions differ. The northwest region is dry and receives little rainfall, while the southwest region experiences high temperatures, humidity, and frequent severe weather events such as typhoons and torrential rains, leading to frequent floods, mudslides, landslides, and ground subsidence. Buried oil and gas pipelines are vulnerable to damage from geological disasters such as mudslides and landslides. The southwest region also suffers from intense summer heat, dryness, and forest fires under high temperatures, which can damage oil and gas storage tanks. Furthermore, the southwest region is mountainous with steep slopes, and its karst topography or rocky desertification makes it prone to landslides under intense sunlight. Combined with the strong winds and heavy rains during the rainy season, mudslides and landslides occur frequently every year.

[0005] Third, the application environments differ significantly. The geographical environments of buried oil and gas pipelines vary drastically. In the southwest, the humidity is high, and the coastal areas have high salinity, leading to severe soil corrosion of buried oil and gas pipelines. Furthermore, the frequency of damage from third-party excavation operations also differs. The northwest region has a low population density, with many sparsely populated areas and minimal human activity, resulting in less work around the pipelines. In contrast, the southwest region has a relatively high population density, with more infrastructure construction in new urbanization areas, leading to more excavator operations and more frequent damage to the buried pipelines from heavy machinery and transport trucks. The environmental interference and impacts on buried oil and gas pipelines differ drastically, resulting in varying monitoring accuracy and precision, and even false alarms and misreporting, causing excessive workload and financial strain on personnel.

[0006] Therefore, the differences in application conditions and environments between Northwest and Southwest China can lead to vastly different, even contradictory, application results, resulting in misjudgments and false alarms. This wastes a significant amount of human and material resources for protection, leaving relevant personnel exhausted from doing "useless work." Therefore, a distributed monitoring method for oil and gas storage tank leaks is urgently needed. Summary of the Invention

[0007] To address the aforementioned technical problems, this invention proposes a distributed monitoring method for oil and gas storage tank leaks, which can save labor costs and improve the leak detection rate.

[0008] To achieve the above objectives, the present invention provides a distributed monitoring method for oil and gas storage tank leaks, comprising:

[0009] Sensor probes are installed inside oil and gas storage tanks and oil and gas pipelines to acquire dynamic data of the oil and gas storage tanks;

[0010] The geographical information of the oil and gas pipeline is obtained by locating and navigating the pipeline's path and using the sensor probe.

[0011] Based on the aforementioned geographic information and dynamic data, oil and gas storage tanks are inspected, and inspection results are obtained.

[0012] Based on the inspection results, the monitoring of the oil and gas storage tank was completed.

[0013] Optionally, the dynamic data includes pressure, temperature, and density.

[0014] Optionally, obtaining the geographical information of the oil and gas pipeline includes:

[0015] The initial geographical information of the oil and gas pipeline is obtained by locating and navigating the pipeline's path and using the sensor probe.

[0016] The initial geographic information is preprocessed to obtain the geographic information of the oil and gas pipeline.

[0017] Optionally, preprocessing the initial geographic information includes:

[0018] Based on the initial geographic information, information on naturally released oil and gas concentrations and environmental background oil and gas concentrations are removed.

[0019] Optionally, based on the aforementioned geographic information and dynamic data, inspections are conducted on oil and gas storage tanks, and the inspection results are obtained, including:

[0020] The dynamic data is monitored in real time to determine whether any abnormality has occurred in the dynamic data and to obtain the first monitoring result.

[0021] Based on the first monitoring result and combined with the geographical information, the oil and gas pipeline is inspected, and the inspection result is obtained.

[0022] Optionally, determining whether the dynamic data is abnormal and obtaining the first monitoring result includes:

[0023] Obtain the historical average pressure of the oil and gas storage tank, compare the real-time pressure value of the oil and gas storage tank with the historical average pressure value, and obtain the first comparison result;

[0024] If the difference between the first comparison results is greater than a preset value, a blue warning is issued, and the historical average density of the oil and gas storage tank is obtained. The real-time density value of the oil and gas storage tank is compared with the historical average density value to obtain a second comparison result.

[0025] If the difference between the second comparison results is greater than the preset value, a yellow warning is issued, and the historical average temperature of the oil and gas storage tank is obtained. The real-time temperature value of the oil and gas storage tank is compared with the historical average temperature value to obtain the third comparison result.

[0026] If the difference between the third comparison results is greater than a preset value, a red alert is issued and the first monitoring result is obtained.

[0027] Optionally, based on the first monitoring result and combined with the geographical information, the oil and gas pipeline is inspected, and the inspection results are obtained including:

[0028] Obtain the historical average flow velocity of the oil and gas pipeline;

[0029] Based on the first monitoring result and the geographical information, the real-time flow velocity value of the oil and gas pipeline is obtained;

[0030] Compare the historical average flow velocity with the real-time flow velocity to obtain the comparison results;

[0031] If the difference between the comparison results is greater than a preset value, then the preset leakage location is determined.

[0032] Optionally, based on the inspection results, monitoring the oil and gas storage tank includes:

[0033] Based on the warning level, different levels of instructions are issued to monitor for leaks in the oil and gas storage tanks.

[0034] Compared with the prior art, the present invention has the following advantages and technical effects:

[0035] This invention uses sensor probes installed in oil and gas storage tanks and pipelines to monitor pressure, temperature, density, and flow rate in real time. By dynamically analyzing the data in sequence, exceeding the limits of pressure, density, and temperature, anomalies can be detected in a timely manner, and the anomaly level can be determined. Based on the anomaly level, instructions are sent to prevent the accident from escalating. Attached Figure Description

[0036] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0037] Figure 1 This is a flowchart of a distributed monitoring method for oil and gas storage tank leakage according to an embodiment of the present invention. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0040] Based on extensive prior research and achievements, this invention proposes "key technologies for integrated air-space-ground monitoring, early warning, and protection of safety risks and hidden dangers in oil and gas pipelines." Through non-contact remote infrared temperature measurement of oil and gas pipelines, remote measurement of online operational parameters of oil and gas pipelines, combined with BeiDou positioning and satellite remote sensing monitoring, aerial drone monitoring, ground-based instrument inspections, underground pipeline perimeter detection, and pipeline internal detection, this invention achieves integrated monitoring across five dimensions: air, ground, underground, and pipeline internals, ensuring the safe operation of oil and gas pipeline transportation.

[0041] This invention proposes a distributed monitoring method for oil and gas storage tank leaks, such as... Figure 1 As shown, the specific steps include:

[0042] Sensor probes are installed inside oil and gas storage tanks and pipelines to acquire dynamic data of the oil and gas storage tanks;

[0043] Geographic information of oil and gas pipelines can be obtained by locating and navigating their paths and using sensor probes.

[0044] Based on geographic information and dynamic data, oil and gas storage tanks are inspected to obtain inspection results.

[0045] Based on the inspection results, the monitoring of oil and gas storage tanks was completed.

[0046] Furthermore, dynamic data includes: pressure, temperature, and density.

[0047] Furthermore, obtaining geographical information about oil and gas pipelines includes:

[0048] The initial geographic information of oil and gas pipelines is obtained by locating and navigating the pipeline's path and using sensor probes.

[0049] The initial geographic information is preprocessed to obtain the geographic information of oil and gas pipelines.

[0050] Specifically, using BeiDou positioning and navigation to trace the routes of oil and gas pipelines improves the geographic information system (GIS) for these pipelines, including various static databases, which facilitates subsequent emergency maintenance and repair. BeiDou positioning also assists with the positioning of subsequent remote sensing monitoring systems, drone patrols, vehicle-mounted inspection devices, handheld inspection systems, and fiber optic early warning systems.

[0051] Furthermore, preprocessing of the initial geographic information includes:

[0052] Based on the initial geographic information, information on naturally released oil and gas concentrations and environmental background oil and gas concentrations were removed.

[0053] Specifically, with the assistance of BeiDou positioning, remote sensing satellites closely monitor the concentration of oil and gas around oil and gas pipelines, and eliminate the influence of natural releases (biogas digesters) and environmental background (industrial emissions, etc.). By combining the oil and gas physical property monitoring maps with intelligent expert diagnostic systems, the accuracy of the judgment is improved.

[0054] Furthermore, based on geographic information and dynamic data, inspections are conducted on oil and gas storage tanks, and the inspection results include:

[0055] Real-time monitoring of dynamic data, determination of whether abnormalities occur in the dynamic data, and acquisition of initial monitoring results;

[0056] Based on the initial monitoring results and combined with geographic information, the oil and gas pipelines are inspected to obtain the inspection results.

[0057] Specifically, with the assistance of BeiDou positioning, the pre-embedded fiber optic vibration and temperature measurement system can monitor the area within 50cm around the oil and gas pipeline 24 / 7. In the event that drones, vehicle-mounted systems, and personnel cannot operate under severe weather conditions such as strong winds and snowstorms, the fiber optic early warning system can provide real-time monitoring and play the role of providing the closest protection to the pipeline.

[0058] Inside the pipeline, sensor probes are installed to monitor various dynamic data of pipeline operation, including online monitoring of pressure, flow rate, temperature, density, and viscosity, to promptly detect anomalies. Abnormal pressure-flow changes are used to determine pipeline malfunctions, such as pressure drop and flow loss after a leak.

[0059] Furthermore, determining whether dynamic data is abnormal and obtaining the first monitoring result includes:

[0060] Obtain the historical average pressure of the oil and gas storage tank, compare the real-time pressure value of the oil and gas storage tank with the historical average pressure value, and obtain the first comparison result;

[0061] If the difference between the first comparison results is greater than the preset value, a blue warning will be issued, and the historical average density of the oil and gas storage tank will continue to be obtained. The real-time density value of the oil and gas storage tank will be compared with the historical average density value to obtain the second comparison result.

[0062] If the difference between the second comparison results is greater than the preset value, a yellow warning will be issued, and the historical average temperature of the oil and gas storage tank will continue to be obtained. The real-time temperature value of the oil and gas storage tank will be compared with the historical average temperature value to obtain the third comparison result.

[0063] If the difference between the third comparison results is greater than the preset value, a red alert will be issued and the first monitoring result will be obtained.

[0064] Specifically, the average pressure value is determined based on historical pressure values, and the pressure in the oil and gas tank to be monitored is judged based on the average pressure value. When the change value is greater than the preset value, it is judged that a leak has occurred and a blue warning is issued. If the change value is less than the preset value, it means that there is no risk of leakage in the oil and gas pipeline, and there is no need to continue to monitor density and temperature.

[0065] Among these tests, the pressure, density, and temperature of oil and gas storage tanks should be measured sequentially, with the leakage risk increasing accordingly. Risk levels are categorized into three levels: general risk, significant risk, and major risk, represented by blue, yellow, and red respectively. The risk level depends to some extent on the severity and likelihood levels. Risk is the uncertainty between the production objective and the labor outcome. It has two main meanings: one definition emphasizes that risk manifests as uncertainty of returns; the other emphasizes that risk manifests as uncertainty of costs or consequences. If risk manifests as uncertainty of returns or consequences, it means that the outcome of the risk may result in loss, profit, or neither loss nor profit; this is a broad definition of risk, and all activities involving the exercise of ownership rights should be considered risk management, including financial risk. Conversely, if risk manifests as uncertainty of loss, it means that risk can only result in loss, with no possibility of profit; this is a narrow definition of risk.

[0066] Furthermore, based on the initial monitoring results and combined with geographic information, inspections are conducted on oil and gas pipelines, and the inspection results include:

[0067] Obtain the historical average flow velocity of oil and gas pipelines;

[0068] Based on the initial monitoring results and combined with geographic information, the real-time flow velocity values ​​of the oil and gas pipelines were obtained.

[0069] Compare historical average flow rates with real-time flow rate values ​​to obtain comparison results;

[0070] If the difference between the comparison results is greater than the preset value, then the preset leak location is determined.

[0071] Specifically, the oil and gas storage tank leak monitoring system includes: multiple airflow monitoring sensors; a cloud server, which, when a leak is detected in the monitored oil and gas pipeline, sends airflow acquisition commands to the multiple airflow monitoring sensors within the pipeline; the multiple airflow monitoring sensors, upon receiving the airflow acquisition commands, acquire the gas flow velocity at various locations within the monitored oil and gas pipeline and send the gas flow velocity data to the cloud server; the cloud server, based on the gas flow velocity, determines the predicted leak location in the monitored oil and gas pipeline, generates an oil and gas leak alarm based on the predicted leak location, and sends the oil and gas leak alarm to the user equipment. Through this method, the leak location within the pipeline can be located, thereby improving the work efficiency of pipeline maintenance personnel.

[0072] It should be noted that the closer to the leak in the pipeline, the faster the flow rate. Therefore, it is only necessary to determine the flow rate value at the location of each airflow monitoring sensor based on the flow rate obtained from each airflow monitoring sensor. First, determine the fastest flow rate value, and then detect the flow rate values ​​at the surrounding adjacent locations. Select the location with the highest flow rate value among the surrounding adjacent locations as the adjacent fastest flow rate value. This determines the locations corresponding to the fastest flow rate value and the adjacent fastest flow rate value as adjacent locations. The locations between the adjacent locations are the preset leak locations. The maintenance personnel can first check whether the preset leak locations are the actual leak points, thereby improving the work efficiency of the maintenance personnel to a certain extent.

[0073] Furthermore, based on the inspection results, the monitoring of oil and gas storage tanks includes:

[0074] Based on the warning level, different levels of instructions are issued to monitor leaks in oil and gas storage tanks.

[0075] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A distributed monitoring method for oil and gas storage tank leaks, characterized in that, include: Sensor probes are installed inside oil and gas storage tanks and oil and gas pipelines to acquire dynamic data of the oil and gas storage tanks; The geographical information of the oil and gas pipeline is obtained by locating and navigating the pipeline's path and using the sensor probe. Obtaining the geographical information of the oil and gas pipeline includes: The initial geographical information of the oil and gas pipeline is obtained by locating and navigating the pipeline's path and using the sensor probe. The initial geographic information is preprocessed to obtain the geographic information of the oil and gas pipeline; Preprocessing the initial geographic information includes: Based on the initial geographic information, information on naturally released oil and gas concentrations and environmental background oil and gas concentrations are removed; based on the geographic information and dynamic data, oil and gas storage tanks are inspected, and inspection results are obtained; Based on the aforementioned geographic information and dynamic data, inspections are conducted on oil and gas storage tanks, and the inspection results include: The dynamic data is monitored in real time to determine whether any abnormality has occurred in the dynamic data and to obtain the first monitoring result. Based on the first monitoring result and combined with the geographical information, the oil and gas pipeline is inspected to obtain the inspection result; Determining whether the dynamic data is abnormal and obtaining the first monitoring result includes: Obtain the historical average pressure of the oil and gas storage tank, compare the real-time pressure value of the oil and gas storage tank with the historical average pressure value, and obtain the first comparison result; If the difference between the first comparison results is greater than a preset value, a blue warning is issued, and the historical average density of the oil and gas storage tank is obtained. The real-time density value of the oil and gas storage tank is compared with the historical average density value to obtain a second comparison result. If the difference between the second comparison results is greater than the preset value, a yellow warning is issued, and the historical average temperature of the oil and gas storage tank is obtained. The real-time temperature value of the oil and gas storage tank is compared with the historical average temperature value to obtain the third comparison result. If the difference between the third comparison results is greater than a preset value, a red alert is issued and the first monitoring result is obtained; Based on the first monitoring result and combined with the geographical information, the oil and gas pipeline is inspected, and the inspection results are obtained as follows: Obtain the historical average flow velocity of the oil and gas pipeline; Based on the first monitoring result and the geographical information, the real-time flow velocity value of the oil and gas pipeline is obtained; Compare the historical average flow velocity with the real-time flow velocity to obtain the comparison results; If the difference between the comparison results is greater than a preset value, then the preset leakage location is determined; Based on the inspection results, the monitoring of the oil and gas storage tank was completed.

2. The distributed monitoring method for oil and gas storage tank leakage according to claim 1, characterized in that, The dynamic data includes: pressure, temperature, and density.

3. The distributed monitoring method for oil and gas storage tank leakage according to claim 1, characterized in that, Based on the inspection results, the monitoring of the oil and gas storage tank includes: Based on the warning level, different levels of instructions are issued to monitor for leaks in the oil and gas storage tanks.

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