[1]李发根,等.在役双金属复合管道失效机制及控制措施分析[J].焊管,2019,42(9):64-68.[doi:10.19291/j.cnki.1001-3938.2019.9.012]
　LI Fagen,YANG Jiamao,et al.Failure Mechanism and Control Measures Analysis of Bimetal Composite Pipelines[J].,2019,42(9):64-68.[doi:10.19291/j.cnki.1001-3938.2019.9.012]
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在役双金属复合管道
失效机制及控制措施分析()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
42
期数:
2019年第9期
页码:
64-68
栏目:
经验交流
出版日期:
2019-09-28

文章信息/Info

Title:
Failure Mechanism and Control Measures Analysis of Bimetal Composite Pipelines
文章编号:
10.19291/j.cnki.1001-3938.2019.9.012
作者:
李发根1;  2; 杨家茂3; 冯 泉4; 李为卫1;  2; 付安庆1;  2
1. 中国石油集团石油管工程技术研究院， 西安 710065；
2. 石油管材及装备材料服役行为与结构安全国家重点实验室， 西安 710065；
3. 西安长庆科技工程有限公司， 西安 710018； 4. 中国石油塔里木油田分公司， 新疆 库尔勒 841000
Author(s):
LI Fagen1;  2;  YANG Jiamao3;  FENG Quan4;  LI Weiwei1;  2;  FU Anqing1;  2
1. CNPC Tubular Goods Research Institute, Xi’an 710065, China;
2. State Key State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials， Xi’an 710065， China;
3. Xi’An Changqing Science and Technology Engineering Co., Ltd., Xi’an 710018， China; 4. PetroChina Tarim Oilfield Company， Korla 841000， Xinjiang， China
关键词:
机械复合管; 失效机制; 风险评估; 内部涡流检测; 漏磁检测
Keywords:
mechanical composite pipe;  failure mechanism;  risk assessment;  internal eddy current inspection;  magnetic flux leakage testing
分类号:
TE973
DOI:
10.19291/j.cnki.1001-3938.2019.9.012
文献标志码:
B
摘要:
双金属复合管被认为是解决高腐蚀性气田地面集输管线腐蚀问题的一种相对安全和经济的办法，但目前国内应用过程中发生了多起失效案例。针对近年来316L内衬机械复合管发生环焊缝开裂、环焊缝腐蚀和衬层塌陷三类典型失效问题，分析失效原因，梳理失效风险，剖析了失效风险控制面临的挑战问题和提出可行性的解决措施。分析指出，316L内衬机械复合管存在双层结构和结合强度低的固有特性，衬层塌陷失效风险不可避免，使用的主要对接焊接工艺不够成熟，焊接失效隐患将会长期存在。进一步明确了可行的316L内衬机械复合管失效风险控制技术，基于肯特打分的半定量风险评估与开挖检查，可作为主要失效控制手段之一，同时内部涡流检测和漏磁检测技术集成已能够检出大面积的金属损伤，为双金属复合管开展内检、排查失效风险提供了可能。
Abstract:
Bimetal composite pipes are considered to be a relatively safe and economical method to solve the corrosion problem of surface gathering and transportation pipelines in highly corrosive gas fields. However, many failure cases have occurred in the domestic application process. This research mainly focuses on three typical failure problems of 316L mechanical composite pipe with inner lining in recent years, including girth weld cracking, girth weld corrosion and liner collapse. The failure causes are analyzed, failure risks are sorted out, the challenges faced by failure risk control are studied, and feasible solutions are put forward. It is pointed out that 316L lined mechanical composite pipe has inherent characteristics of double-layer structure and low bonding strength. The risk of liner collapse failure is inevitable. The main butt welding technology used is not mature enough, and the hidden danger of welding failure will exist for a long time. The feasible failure risk control technology of 316L lined mechanical composite pipe is further clarified. Semi-quantitative risk assessment and excavation inspection based on Kent scoring can be used as one of the main failure control methods. At the same time, the integration of internal eddy current detection and magnetic flux leakage detection technology have been able to detect a large area of metal damage, which provides a possibility for the internal inspection of bimetal composite pipes and the investigation of failure risk.

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备注/Memo

备注/Memo:
收稿日期：2019-03-12
基金项目： 陕西省重点研发计划资助项目“原油采集输管线防腐蚀集成技术研究”（项目编号2018ZDXM-GY-171）；陕西省重点研发计划资助项目“双金属复合管失效机制及控制技术研究”（项目编号2019KJXX-091）。
作者简介：李发根（1985—），男，高级工程师，2008年硕士毕业于中国石油大学（北京）材料学专业，现主要从事石油管材的研究工作。
更新日期/Last Update: 2019-10-24