Pipeline safety status assessment method and step-up booster pipeline safety resumption method

Abstract

The invention discloses a method for assessing the safety state of a pipeline and a method for safely resuming production of a stepped booster pipeline. The method for evaluating the safety state of the pipeline comprises the following steps: stopping the pipeline, conducting surveys, and locating the landslide pipeline; Meter carries out magnetic detection to landslide pipeline, and utilizes described non-contact magnetometer supporting software to observe and record the magnetic signal data along the line of described landslide pipeline; Calculate landslide pipeline along the force-magnetic relationship comprehensive index M distribution; Evaluate the safety state of landslide pipeline The method for safe production resumption of stepped booster pipelines includes: evaluating the safety state of the pipeline according to the above method, calculating the resumption pressure of the pipeline according to the safety state of the pipeline, and realizing the safe resumption of production of the pipeline according to the resumption pressure of the pipeline. The invention can accurately detect the stress concentration position, accurately evaluate the safety state of the pipeline, and realize the safe production resumption of the pipeline.

Description

technical field [0001] The invention relates to the technical field of pipeline safety, in particular to a method for assessing the safety state of pipelines and a method for safely resuming production of stepped booster pipelines. Background technique [0002] In the coupling relationship where geological disasters such as landslides are the hazard-causing body and long-distance oil and gas pipelines are the disaster-bearing body, pipeline accidents caused by landslides often occur, especially in the western region of my country, which is rich in oil and gas resources. Light ones can cause the pipeline to hang overhead, and severe ones can cause the pipeline to break. Leaks or ruptures in pipelines not only cause immediate fires and explosions, but also have long-term effects on the environment. [0003] With the vigorous laying of oil and gas pipelines in my country and the rapid development of numerical simulation methods, numerical simulation has been widely used in the...

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Problems solved by technology

[0004] However, when performing numerical simulations in the prior art, some artificial simplifications have been made in the setting of boundary conditions, resulting in a large difference between the simulated working conditions and the actual engineering results

The numerical simulation method cannot accurately find the stress concentration location of the landslide pipeline, so the safe resumption pressure of the pipeline cannot be calculated, so that the resumption of production and operation of the pipeline cannot be guided, resulting in accidents such as pipe bursts and cracks during the resumption of production.

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