Error Analysis of Residual Strength Assessment Methods for Pipeline with Volume Defect

doi:10.3969/j.issn.1672-6952.2018.02.011

Journal of Liaoning Petrochemical University ›› 2018, Vol. 38 ›› Issue (02): 52-56.DOI: 10.3969/j.issn.1672-6952.2018.02.011

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Error Analysis of Residual Strength Assessment Methods for Pipeline with Volume Defect

Quan Dongyu¹， Wang Weiqiang¹， Sun Shaoyang²

（1.College of Petroleum Engineering, Liaoning Shihua University，Fushun Liaoning 113001，China； 2.Liaohe Oilfield Construction Engineering Company，Panjin Liaoning 124000，China）

Received:2017-03-11 Revised:2017-04-25 Published:2018-04-26 Online:2018-04-25

管道体积型缺陷剩余强度评价方法误差分析

全冬禹¹,王卫强¹,孙邵洋²

（1.辽宁石油化工大学石油天然气工程学院，辽宁抚顺 113001； 2.辽河油田建设工程公司，辽宁盘锦 124000

通讯作者: 王卫强（1974-），男，博士，教授，从事油气管道输送、管道风险管理、管道地理信息技术等方面的研究；E-mail：wwq920285@163.com。
作者简介:全冬禹（1990），男，硕士研究生，从事长距离管道输送技术方面的研究；Email：334854994@qq.com。
基金资助:
辽宁省科技计划面上项目（2015020604）

Abstract

Abstract: The five common methods used residual strength assessment for oil and gas pipeline were studied.By comparing the results calculated by strength assessment equations and measured by blasting experiments, the calculation error of these equations were obtained.Then the error distribution interval was analyzed.The results showed that the equation of Modified B31G was less conservative than Origin B31G.Allowable stress method and PCORRC equation had the better evaluation results.The evaluation equation given by API 579-1 standard also had the problem of too-conservative evaluation results.For the different grade pipeline steels, the evaluation effects of the same evaluation equation were different.

Key words: Pipeline, Volume defect, Residual strength assessment, Blasting experience, Error analysis

摘要： 研究了5种较为通用的油气管道体积型缺陷剩余强度评价方法，对评价方程计算结果与含缺陷管道的爆破试验结果进行比较，得出了各种评价方程的计算误差，对误差的分布区间进行了分析。结果表明，与Origin B31G方程评价结果相比，Modified B31G方程评价结果的保守性大大降低；许用应力法和PCORRC方程的评价效果较好，API 579-1标准给出的评价方程同样存在评价结果过于保守的问题；对不同级别的管线钢，同一种评价方程的评价效果存在差异。

关键词: 管道, 体积型缺陷, 剩余强度评价, 爆破试验, 误差分析

Quan Dongyu， Wang Weiqiang， Sun Shaoyang. Error Analysis of Residual Strength Assessment Methods for Pipeline with Volume Defect[J]. Journal of Liaoning Petrochemical University, 2018, 38(02): 52-56.

全冬禹,王卫强,孙邵洋. 管道体积型缺陷剩余强度评价方法误差分析[J]. 辽宁石油化工大学学报, 2018, 38(02): 52-56.

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Error Analysis of Residual Strength Assessment Methods for Pipeline with Volume Defect

管道体积型缺陷剩余强度评价方法误差分析

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