Pipeline leakage monitoring method and device

Abstract

The invention provides a pipeline leakage monitoring method and device. The pipeline leakage monitoring method provided by the present invention includes: collecting the flow and pressure at the head end and the end of the pipeline; when an inflection point appears on the flow curve at the head end or the end of the pipeline, judging whether the pressure curve at the head end or the end of the pipeline is There is an inflection point, if the pressure curves at the head end and the end of the pipeline have inflection points, record the time between the first time when the inflection point appears in the pressure curve at the head end of the pipeline and the second time when the inflection point occurs in the pressure curve at the end of the pipeline and determine the distance between the leak point and the beginning of the pipeline or the distance between the leak point and the end of the pipeline according to the time difference and the propagation velocity of the liquid pressure wave in the pipeline. The invention can realize the accurate positioning of the leakage point on the pipeline by using the change of the flow at both ends of the pipeline and the time difference of the inflection point of the pressure curve.

Description

technical field [0001] The invention relates to oil pipeline technology, in particular to a pipeline leakage monitoring method and device. Background technique [0002] When oil or natural gas is collected and transported in the oil field, it is difficult to rely on manual management due to the long pipeline route. However, natural damage or man-made damage will cause pipeline perforation or fracture. If it cannot be detected and treated in time, it will not only affect production, but also lead to a series of adverse consequences such as a large amount of oil leakage and environmental pollution, resulting in huge economic losses. Therefore, it is necessary to monitor whether there is leakage in the oil and gas pipeline. [0003] At present, the existing oil field pipeline monitoring technology is to install flowmeters or pressure sensors at both ends of the pipeline. The flowmeter or pressure sensor at both ends detects the change of flow or pressure value, and sends out ...

AI Technical Summary

Problems solved by technology

[0004] However, the current transmission pipeline monitoring technology cannot know the exact location of the leakage point on the transmission pipeline

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