[1]赵金兰,王 焘,王玉成,等.S135钻杆管体到加厚过渡段区域失效分析[J].焊管,2021,44(1):32-37,,47.[doi:10.19291/j.cnki.1001-3938.2021.01.006]
 ZHAO Jinlan,WANG Dao,WANG Yucheng,et al.Failure Analysis of S135 Drill Pipe Transition Section from Pipe Body to Thickening[J].,2021,44(1):32-37,,47.[doi:10.19291/j.cnki.1001-3938.2021.01.006]
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S135钻杆管体到加厚过渡段区域失效分析()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
第44卷
期数:
2021年第1期
页码:
32-37,,47
栏目:
试验与研究
出版日期:
2021-01-28

文章信息/Info

Title:
Failure Analysis of S135 Drill Pipe Transition Section from Pipe Body to Thickening
文章编号:
10.19291/j.cnki.1001-3938.2021.01.006
作者:
赵金兰王 焘王玉成王亚广李京川仝 柯瞿婷婷
1. 中国石油集团石油管工程技术研究院,西安 710077;
2. 中油管道物资装备有限公司,河北 廊坊 065000
Author(s):
ZHAO Jinlan WANG Dao WANG Yucheng WANG Yaguang LI Jingchuan TONG Ke QU Tingting
1. CNPC Tubular Goods Research Institute, Xi’an 710077, China;
2. Pipe Material&Equipment Corporation of CNPC, Langfang 065000, Hebei, China)
关键词:
腐蚀疲劳钻杆失效
Keywords:
corrosion fatigue drill pipe failure
分类号:
TG172
DOI:
10.19291/j.cnki.1001-3938.2021.01.006
文献标志码:
B
摘要:
针对某井钻杆超声波探伤时,发现多根钻杆管体到加厚过渡段区域出现内裂纹或内腐蚀缺陷。通过宏观分析、化学成分分析、力学性能检测、金相组织观察、SEM分析、能谱分析及XRD检测等方法,对裂纹及腐蚀缺陷进行了剖析。结果表明,在氧的作用下,使得钻杆加厚过渡段内表面处腐蚀集中和应力集中部位产生腐蚀坑,在交变载荷作用下,腐蚀坑底的应力集中对裂纹的萌生和扩展极易起到直接作用,同时裂纹快速扩展,这是该钻杆腐蚀疲劳失效的根本原因。
Abstract:
During ultrasonic inspection of drill pipe in a certain well, internal cracks or internal corrosion defects were found in many drill pipe bodies in the transition section of thickening. The cracks and corrosion defects were analyzed by means of macroscopic analysis, chemical composition analysis, mechanical property detection, metallographic analysis, scanning electron microscope (SEM) and energy spectrum analysis, XRD and so on. The results show that under oxygen, corrosion pits are formed at the corrosion and stress concentration positions on the inner surface of the transition zone of the drill pipe thickening. Under the action of alternating load, the stress concentration at the bottom of corrosion pit plays a direct role in the initiation and propagation of cracks, and the cracks propagate rapidly. This is the main cause of corrosion fatigue failure of the drill pipe.

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备注/Memo

备注/Memo:
收稿日期:2020-10-26
作者简介:赵金兰(1982—),女,硕士,高级工程师,中国矿业大学(北京),主要从事石油管道技术支持工作。
更新日期/Last Update: 2021-03-22