某井特殊螺纹接头油管脱扣原因分析
Causes Analysis on Pulling out of a Premium Connection Tubing in One Well
摘 要
对某井特殊螺纹接头油管脱扣事故进行了深入调查研究，对失效油管试样进行了宏观分析、几何尺寸测量、金相分析、力学性能试验和化学成分分析；对油管在井下的受力状态进行了分析，对油管脱扣和接箍开裂的先后顺序进行了推断。结果表明：油管接箍脆性开裂导致了油管脱扣事故，油管接箍开裂主要与其材料屈服强度、硬度偏高以及修井过程中油管所受的温度载荷有关。
脱扣
接箍
开裂
tubing
pulling out
coupling
cracking
Abstract
A thorough investigation was done on the pulling out accident of a premium connection tubing in one well. The macro analysis, geometry dimension measurement, metallographic analysis, mechanical performance test and chemical composition analysis were carried out to the failure tubing samples. The stress state of the tubing was analyzed, and time order of the tubing connection pulling out and the coupling cracking was deduced. The results show that the tubing connection was pulled out due to the brittle cracking of the coupling, and the coupling cracking was mainly related to the high yield strength and high hardness of its material as well as the temperature load of the tubing during repairing well.
中图分类号 TE931 DOI 10.11973/lhjy-wl201704015
所属栏目 质量控制与失效分析
基金项目
收稿日期 2015/11/11
修改稿日期
网络出版日期
作者单位点击查看
备注杨向同(1972-),男,高级工程师,主要从事测井和试油技术研究和管理工作。
引用该论文: YANG Xiang-tong,Lü,Shuan-lu,PENG Jian-xin,WANG Peng,SONG Wen-wen,LI Jin-feng,GENG Hai-long,WEN Zhi-ming,SHI Gui-jun,FAN Wen-gang. Causes Analysis on Pulling out of a Premium Connection Tubing in One Well[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2017, 53(4): 291～295
杨向同,吕拴录,彭建新,王鹏,宋文文,李金凤,耿海龙,文志明,石桂军,樊文刚. 某井特殊螺纹接头油管脱扣原因分析[J]. 理化检验－物理分册, 2017, 53(4): 291～295
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参考文献
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【4】吕拴录,骆发前,唐继平,等.某井177.8 mm套管固井事故原因分析[J].钻采工艺,2009,32(4):98-101.
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【6】吕拴录,袁鹏斌,张伟文,等.某井N80钢级套管脱扣和粘扣原因分析[J].钢管,2010,39(5):57-61.
【7】滕学清,吕拴录,宋周成,等.某井特殊螺纹套管脱扣和粘扣原因分析[J].理化检验-物理分册,2011,47(4):261-264.
【8】吕拴录,贾立强,樊文刚,等.进口Φ339.7mm套管在固井过程中脱扣原因分析[J].理化检验-物理分册,2012,48(2):130-133.
【9】宋周成,吕拴录,秦宏德,等.套管柱在下井过程中脱扣原因分析[J].理化检验-物理分册,2012,48(增刊1):347-351.
【10】吕拴录,李鹤林,藤学清,等.油套管粘扣和泄漏失效分析综述[J].石油矿场机械,2011,40(4):21-25.
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【13】杨向同,吕拴录,宋文文,等.某井超级13 Cr油管接箍开裂原因分析[J].石油管材与仪器,2016(1):40-45.
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