Method of using PNGSPSS for finding out geomagnetic storm disaster mutational sites of buried oil and gas pipeline network

Abstract

The invention relates to a method of using a PNGSPSS for finding out geomagnetic storm disaster mutational sites of a buried oil and gas pipeline network. The method includes the steps that the geomagnetic storm disaster mutational sites of the whole pipeline network are found out by scanning and searching for geomagnetic storm disaster mutational sites of the long-distance buried oil and gas pipeline network, which is beneficial for implementing line optimizing selection on he buried oil and gas pipeline network, segmenting a pipeline electrolytic coupling and taking cathode protection measures for pipelines; the geomagnetic storm disaster mutational sites of the pipelines can be reduced, pipeline PSP 'dovetail peaks' are reduced, the number of the pipeline cathode protection measures is reduced, and pipeline corrosion prevention cost is saved; geomagnetic induction currents (GIC) and a pipe-to-soil potential (PSP) 'negative' accumulative effect generated in the long-distance electrical continuity buried oil and gas pipeline network can be reduced, excessive bipolarity, caused by geomagnetic storms, of PSP at the two ends of the pipelines is avoided, it is avoided that a potentiostat and other devices are damaged due to the excessive pipeline GIC caused by the geomagnetic storms, the capacity for defending geomagnetic storm disasters of the buried oil and gas pipeline is improved, and the life of the pipelines and the related devices is prolonged.

Description

technical field [0001] The invention relates to the technical field of buried oil and gas pipeline network protection, in particular to a method for finding the sudden change point of geomagnetic storm disaster in buried oil and gas pipeline network by using PNGSPSS (pipe network geomagnetic storm disaster sudden change point scanning search method). Background technique [0002] Long-distance oil and gas pipelines have gas stations and oil stations at intervals, and insulating flanges are installed at the inlet and outlet of the gas stations and oil stations to electrically isolate the pipelines. For the convenience of power supply and maintenance, pipeline cathodic protection devices It is installed at the gas transmission station and the oil transmission station, and the two sections of pipelines outside the insulating flanges of the gas transmission station and the oil transmission station are connected together with metal wires. After the gas transmission station and the...

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Problems solved by technology

[0012] At present, the structural parameters of the buried oil and gas pipeline network and the mutation points of the environmental parameters of the pipeline network have not been paid attention to, and there is also a lack of comprehensive, complete and accurate data support. Problem, the present invention provides a kind of buried oil and gas pipeline network geomagnetic storm disaster sudden change point scanning search method (PNGSPSS method) and adopt this method to find out the method for the geomagnetic storm disaster sudden change point of the whole pipeline network, adopt the technical scheme of the present invention , which is conducive to the implementation of line optimization selection, pipeline electro-decoupling segmentation, and cathodic protection measures for a section of pipeline, which can further reduce the sudden change point of geomagnetic storm disasters in pipelines and reduce the PSP "swallow tail peak" of pipelines, thereby reducing the number of cathodic protection devices for pipelines, greatly It saves the anti-corrosion cost of pipelines, and can reduce the "negative" cumulative effect of geomagnetic induction current GIC and pipe-to-ground potential PSP generated by geomagnetic storm disasters in long-distance electrical continuity buried oil and gas pipeline networks, and can avoid damage at both ends of the pipeline caused by geomagnetic storms. The bipolarity of the pipe-to-ground potential PSP is too high, avoiding the damage of equipment such as potentiostats caused by the excessive geomagnetic induction current GIC of the pipeline caused by geomagnetic storms, improving the ability of buried oil and gas pipelines to defend against geomagnetic storms, and prolonging the life of pipelines and related equipment

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