110钢级φ88.9 mm×6.45 mm超级13Cr钢油管刺穿失效分析
Failure Analysis on Washout of a 110 Grade φ88.9 mm×6.45 mm Super-13Cr Steel Tubing
摘 要
采用宏观分析、化学成分分析、力学性能测试、金相检验及扫描电镜断口分析等手段, 对某油田一根规格为φ88.9 mm×6.45 mm的110钢级超级13Cr马氏体不锈钢油管的刺穿失效原因进行了分析。结果表明: 油管失效的实质是油管发生了氯离子应力腐蚀开裂, 裂纹起源于外壁腐蚀坑底部, 从外壁向内壁扩展, 直到穿透壁厚, 形成刺穿通道, 高压流体从内向外刺出并在随后的过程中形成了刺穿孔洞。
刺穿失效
氯离子应力腐蚀开裂
super-13Cr steel tubing
piercing failure
chloride stress corrosion cracking
Abstract
Washout failure of a 110 grade, φ88.9 mm×6.45 mm super-13Cr martensitic stainless steel tubing was analyzed by means of macro analysis, chemical compositions analysis, mechanical property test, metallographic examination and SEM fracture analysis. The results show that the essence of failure was chloride stress corrosion cracking occurred on the tubing. The crack originated from the bottom of pits laid on the outer surface of the tubing, and developed from outer surface to inner surface to form the pierced channel until it penetrated the wall thickness. Thus, high pressure fluid flowed out from the inside of tubing and led to the piercing hole produced.
中图分类号 TG172.5
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收稿日期 2010/11/19
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备注丁毅(1965-)男,高级工程师。
引用该论文: DING Yi,LI Jian-ai,ZHANG Guo-zheng,ZHANG Chun-wan. Failure Analysis on Washout of a 110 Grade φ88.9 mm×6.45 mm Super-13Cr Steel Tubing[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2011, 47(10): 663～667
丁毅,历建爱,张国正,张春婉. 110钢级φ88.9 mm×6.45 mm超级13Cr钢油管刺穿失效分析[J]. 理化检验－物理分册, 2011, 47(10): 663～667
被引情况:
【1】滕学清,吕拴录,冯春,周理志,彭建新,刘明球,饶文艺,耿海龙,李金凤,周威, "某井114.3 mm油管接箍破裂原因分析",理化检验－物理分册 50, 376-379(2014)
【2】滕学清,吕拴录,周理志,季晓红,饶文艺,李金凤,申昭熙,李磊,耿海龙,杨绍龙, "超级13Cr马氏体不锈钢油管表面缺陷原因分析",理化检验－物理分册 50, 67-70(2014)
【3】吕拴录,彭建新,王鹏,宋文文,宋生印,王新虎,李金凤,耿海龙,徐永康, "某井油管穿孔原因分析",理化检验－物理分册 51, 508-511(2015)
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参考文献
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【2】MASAKATSU U,KEIICHI N,NEIL H,et al. Corrosion behavior of super 13Cr martensitic stainless steels in completion fluids[C]//Corrosion 2003. San Diego Ca:NACE International,2003:03097.
【3】IKEDA A,UEDA M,HOSHINO M,et al. Corrosion behavior of low and high alloy tubular products in completion fluids for high temperature deep well[C]//Corrosion 1992. Nashville:NACE International,1992:46.
【4】KEIICHI N,MASAKATSU U. Stress corrosion cracking behavior of super 13Cr martensitic stainless steels in completion fluids[C]//13th Asian-Pacific Corrosion Control Conference. Osaka:[s.n.],2003:16-21.
【5】Houston Technical Center,MISWACO Company. Compatibility of 13Cr MSS and 22-25Cr DSS in halogen based packer fluids:A Review. Reservoir drilling & completion fluids[M]. [S.l.]:[s.n.],2000.
【6】EUGENIO L P,LUCREZIA S C S M,PERRY L N,et al. Corrosion and environmental cracking evaluation of high density brines for use in HPHT fields[C]//SPE High Pressure/High Temperature Sour Well Design Applied Technology Workshop. Texas:Society of Petroleum Engineers,2005:97593-MS.
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