| 某井特殊螺纹套管脱扣和粘扣原因分析 |
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| 引用本文： | 滕学清,吕拴录,宋周成,白登相,孙吉军,吴富强,张锋,李江.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(4):261-264. |
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| 作者姓名： | 滕学清 吕拴录 宋周成 白登相 孙吉军 吴富强 张锋 李江 |
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| 作者单位： | 塔里木油田钻井技术办公室;中国石油大学机电工程学院;西安摩尔石油工程实验室; |
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| 摘 要： | 对某井φ177.8mm×10.36mm 110特殊螺纹接头套管脱扣和粘扣原因进行了分析,认为套管是在严重粘扣之后才发生脱扣的,套管严重粘扣主要与下井操作不当有关。在套管起吊过程中没有螺纹保护器保护的套管接头螺纹、扭矩台肩和密封面容易被损伤,不使用对扣器直接对扣容易导致偏斜对扣;不引扣而直接开动套管钳高速上扣很容易导致粘扣和错扣;一旦严重粘扣和错扣,套管接头连接强度就会大幅度下降,最终导致套管在上提过程中发生脱扣事故。
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| 关 键 词： | 套管 特殊螺纹接头 脱扣 粘扣 错扣 |
Cause Analysis on Tripping and Galling of Premium Connection Casings in a Well |
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| TENG Xue-qing,L Shuan-lu,SONG Zhou-cheng,BAI Deng-xiang,SUN Ji-jun,WU Fu-qiang,ZHANG Feng,LI Jiang.Cause Analysis on Tripping and Galling of Premium Connection Casings in a Well[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2011(4):261-264. |
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| Authors: | TENG Xue-qing L Shuan-lu SONG Zhou-cheng BAI Deng-xiang SUN Ji-jun WU Fu-qiang ZHANG Feng LI Jiang |
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| Affiliation: | TENG Xue-qing~1,L(U|¨) Shuan-lu~(1,2),SONG Zhou-cheng~1,BAI Deng-xiang~1,SUN Ji-jun~1,WU Fu-qiang~1,ZHANG Feng~2,LI Jiang~3 (1.Drilling Technology Office of Tarim Oil Field,Tarim 841000,China,2.Mechanical and Electrical Engineering Institute of China University of Petroleum,Beijing 102249,3.Xi'an Maurer Petroleum Engineering Laboratory,Xi'an 710065,China) |
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| Abstract: | Tripping and galling reasons forφ177.8 mm×10.36 mm 110 premium connection casings in a well were analyzed.It was considered that the tripping and galling of the premium connection casings were related to abnormal operation during running down casing.The pin thread,torque shoulder,and metal to metal seal area of the casing connection without thread protector were easily damaged during running down casing.Incline stab could take place as the stabbing protector was not used during stabbing for make up.Making up at high speed without leading to engagement could result in galling and wrong thread engagement.Once galling and wrong thread engagement appeared,the tension strength of casing connection would be reduced greatly,and tripping accident could occur as the casing string was lifted up. |
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| Keywords: | casing premium connection tripping galling wrong thread engagement |
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