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Dent pipeline safety assessment method based on damage

A technology of safety assessment and dent, which is applied in the direction of resources, instruments, electrical digital data processing, etc., to achieve the effect of ensuring safe and reliable operation

Inactive Publication Date: 2021-02-05
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, more and more field examples have shown that the pipe section is still safe when the strain of many dent defects exceeds 0.06, which has caused many unnecessary excavations and repairs

Method used

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  • Dent pipeline safety assessment method based on damage
  • Dent pipeline safety assessment method based on damage
  • Dent pipeline safety assessment method based on damage

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Embodiment Construction

[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0049] Such as figure 1 As shown, the present invention provides a damage-based dent pipeline safety assessment method, comprising:

[0050] S1. Establish a three-dimensional numerical model of oil and gas pipelines with dent defects.

[0051] The establishment of a three-dimensional numerical model of an oil and gas pipeline containing dent defects includes:

[0052] S11. Set the material characteristic parameters of the pressure head model and the pipeline model.

[0053] In this embodiment, the indenter model is set as a ...

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Abstract

The invention discloses a dent pipeline safety assessment method based on damage. The method comprises the following steps: building a three-dimensional numerical model of an oil and gas pipeline containing dent defects; setting a calculation formula of the damage degree of the indented pipeline; analyzing the pipeline damage degree caused by the dent defects under different working conditions; analyzing the influence of different influence parameters on the damage degree of the indented pipeline; and establishing a damage-based indented pipeline failure judgment criterion. According to the invention, comprehensive safety assessment can be carried out on the oil and gas pipeline with the dent defect, the influence condition of the dent defect on the pipeline can be effectively judged in time, and safe and reliable operation of the oil and gas pipeline is ensured.

Description

technical field [0001] The invention relates to the technical field of defect assessment of oil and gas pipelines, in particular to a damage-based dent pipeline safety assessment method. Background technique [0002] As the main transportation medium of oil and gas resources, pipelines can only ensure the vigorous and healthy development of the oil and gas industry with safe and reliable transportation methods. Oil and gas leakage caused by pipeline failure will not only cause economic losses, but also cause serious casualties and environmental pollution. There are many reasons for the failure of oil and gas pipelines, and the common ones are third-party damage, material defects, corrosion, weld defects and misoperation. According to the report of my country's transportation department, 20% to 40% of very serious pipeline accidents are related to third-party damage every year. In natural gas pipelines and product oil pipelines, third-party damage is one of the main reasons...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06F30/23G06F30/17G06F113/14G06F111/10
CPCG06Q10/0639G06F30/23G06F30/17G06F2113/14G06F2111/10
Inventor 张鹏黄云飞伍颖侯向秦刘思铭秦国晋王艺环张媛
Owner SOUTHWEST PETROLEUM UNIV
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