[1]毕宗岳,张晓峰,张万鹏.连续管疲劳寿命试验研究[J].焊管,2012,35(6):5-8.[doi:１００１－３９３８（２０１２）０6-0005-04]
　BI Zong-yue,ZHANG Xiao-feng,ZHANG Wan-peng.Experimental Study on Fatigue Life of Coiled Tubing （CT）[J].,2012,35(6):5-8.[doi:１００１－３９３８（２０１２）０6-0005-04]
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连续管疲劳寿命试验研究()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
35
期数:
2012年第6期
页码:
5-8
栏目:
试验与研究
出版日期:
2012-06-28

文章信息/Info

Title:
Experimental Study on Fatigue Life of Coiled Tubing （CT）
文章编号:
１００１－３９３８（２０１２）０6-0005-04
作者:
毕宗岳; 张晓峰; 张万鹏
（1. 国家石油天然气管材工程技术研究中心，陕西 宝鸡 721008；
2. 宝鸡石油钢管有限责任公司 钢管研究院， 陕西 宝鸡 721008）
Author(s):
BI Zong-yue1; 2; ZHANG Xiao-feng1; 2; ZHANG Wan-peng1; 2
（1. National Engineering Technology Research Center for Petroleum and Natural Gas Tubular Goods，
Baoji 721008， Shaanxi， China；2.Steel Pipe Research Institute of Baoji Petroleum Steel Pipe Co.， Ltd.，
Baoji 721008， Shaanxi， China）
关键词:
关键词：连续管; 疲劳寿命; 屈服强度; 表面缺陷
Keywords:
Key words: coiled tubing（CT）;  fatigue life;  yield strength;  surface defect
分类号:
TG113.25
DOI:
１００１－３９３８（２０１２）０6-0005-04
文献标志码:
A
摘要:
摘 要：针对油田连续管实际作业工况，研制开发出了基于塑性变形下的连续管低周疲劳试验机。通过CT80钢级连续管疲劳试验表明，随着连续管管径减小或壁厚增加，疲劳寿命明显增加；管内压力增加时，疲劳寿命明显降低；同钢级连续管屈服强度越高，疲劳寿命越高。同时表明，连续管表面缺陷和内部夹杂物会对其疲劳寿命产生极大影响，缺陷和夹杂物尺寸越大，疲劳寿命越低；带有环焊缝对接接头的连续管疲劳寿命明显低于管体寿命。
Abstract:
According to the practical oilfield operation condition of coiled tubing， a low cycle fatigue testing machine based on plastic deformation was developed . The fatigue test result of CT80 coiled tubing indicated that with diameter decreasing or wall thickness increasing， the fatigue life is obviously increased， with internal pressure increasing， the fatigue life is obviously reduced ； the higher the yield strength of coiled tubing with the same steel grade is， the longer fatigue life is . Meanwhile， it showed that surface defects on coiled tubing and inside inclusions will greatly affect its fatigue life， the bigger size of defect and inclusion is， the shorter fatigue life is . Moreover， the fatigue life of coiled tubing with circumferential butt welded joint is obviously lower than that of pipe body.

参考文献/References:

［1］ 李宗田.连续管技术手册［M］.北京：石油工业出版社，2003：2-3.
［2］ 毕宗岳，井晓天，金时麟，等.连续管性能研究与产品开发［J］.石油矿场机械，2010，39（06）：16-20.
［3］ 张运翘.连续管的应力和寿命分析［J］.石油矿场机械，1995，24（01）：21-25.
［4］ 毕宗岳，付宏强.高强度连续油管［J］.焊管，2007，35（06）：85-86.
［5］ VAN ARNAM W D,Smith D.Good Coiled Tubing Welds， Properly Managed, Do Not Break［C］// 2000 SPE/ICoTA Coiled Tubing Roundtable, Houston：Society of Petroleum Engineers Inc.，2000：272-277.
［6］ TIPTON S M, MORAN D W, CHINSETHAGID C, et al.Quantifying the Influence of Surface Defects on Coiled Tubing Fatigue Resistance［C］// 2000 SPE/ICoTA Coiled Tubing Roundtable, Houston: Society of Petroleum Engineers Inc.，2002：221-226.
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备注/Memo

备注/Memo:
作者简介：毕宗岳（1962—），男，高级工程师，工学博士，主要从事油气管材及焊接技术研究工作。
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