|本期目录/Table of Contents|

[1]朱克勤,刘少胡.含缺陷连续管极限承载研究及安全分析*[J].中国安全生产科学技术,2024,20(4):172-179.[doi:10.11731/j.issn.1673-193x.2024.04.024]
　ZHU Keqin,LIU Shaohu.Study on ultimate bearing capacity and safety analysis of coiled tubing with defects[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2024,20(4):172-179.[doi:10.11731/j.issn.1673-193x.2024.04.024]
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含缺陷连续管极限承载研究及安全分析*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
20
期数:
2024年4期
页码:
172-179
栏目:
职业安全卫生管理与技术
出版日期:
2024-04-30

文章信息/Info

Title:
Study on ultimate bearing capacity and safety analysis of coiled tubing with defects
文章编号:
1673-193X(2024)-04-0172-08
作者:
朱克勤; 刘少胡
（1.长江大学 机械工程学院，湖北 荆州 434023；
2.长江大学 油气钻采工程湖北省重点实验室，湖北 武汉 430100）
Author(s):
ZHU Keqin;  LIU Shaohu
(1.School of Mechanical Engineering,Yangtze University,Jingzhou Hubei 434023,China;
2.Province Key Laboratory of Drilling and Production Engineering for Oil and Gas,Yangtze University,Wuhan Hubei 430100,China)
关键词:
连续管; 极限承载; 缺陷; 塑性失效准则; 灰色关联法
Keywords:
coiled tubing;  ultimate bearing capacity;  defects;  plastic failure criterion;  grey correlation method
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2024.04.024
文献标志码:
A
摘要:
为了准确评价含缺陷连续管的极限承载能力，提出基于塑性失效准则的含缺陷连续管极限承载理论模型，以有限元结果对比不同类型缺陷对连续管极限承载的影响，并通过灰色关联法得出缺陷深度和截面积为影响连续管极限承载的敏感因素，基于完整管极限承载理论，采用非线性曲面拟合方法对缺陷修正系数进行拟合，建立包含极限内压、极限外压和极限抗拉载荷的含缺陷连续管极限承载理论模型。研究结果表明：本文模型对比经典模型误差更小，最大误差仅为4.56%，可以有效评价含缺陷连续管极限承载能力。研究结果可为连续管安全作业提供参考。
Abstract:
In order to accurately evaluate the ultimate bearing capacity of the coiled tubing (CT) with defects,a theoretical model of the ultimate bearing capacity of CT with defects based on the plastic failure criterion was proposed.Based on the finite element results,the influence of different types of defects on the ultimate bearing capacity of CT was compared,and through the grey correlation method,it was concluded that the depth of defects and the cross-sectional area of defects are the sensitive factors affecting the ultimate bearing capacity of CT.Based on the ultimate bearing theory of complete CT,a nonlinear surface fitting method was used to fit the defect correction coefficient,and a theoretical model of the ultimate bearing capacity of CT with defects including the ultimate internal pressure,ultimate external pressure and ultimate tensile load was established.The results show that the error of this model is less than those of classical models,and the maximum error is only 4.56%,which can effectively evaluate the ultimate bearing capacity of CT with defects.The research results can provide reference for the safe operation of CT.

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备注/Memo

备注/Memo:
收稿日期： 2023-12-04
* 基金项目： 国家自然科学基金项目（52374002，51974036）；湖北省高等学校优秀中青年科技创新团队计划项目（T2021035）
作者简介： 朱克勤，硕士研究生，主要研究方向为连续管安全评估。
通信作者： 刘少胡，博士，教授，主要研究方向为连续管疲劳寿命评估、管柱力学及井下工具。
更新日期/Last Update: 2024-05-09