| 基于流场分析的钻杆内加厚过渡带管体冲蚀失效机理 |
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| 引用本文： | 刘文红,李磊,刘永刚,潘志勇,王建军.基于流场分析的钻杆内加厚过渡带管体冲蚀失效机理[J].中国腐蚀与防护学报,2011(2). |
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| 作者姓名： | 刘文红 李磊 刘永刚 潘志勇 王建军 |
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| 作者单位： | 中国石油集团石油管工程技术研究院石油管工程重点实验室; |
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| 基金项目： | 中国石油天然气股份有限公司科学研究与技术开发项目(2008E-1607,2008E-1609,2008A-3005和2008D-2404)资助 |
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| 摘 要： | 对带有腐蚀坑的φ127mm API钻杆内、外螺纹端钻杆内加厚过渡带管体刺漏前后的速度场和压力场进行模拟。结果表明:流场的诱导对存在腐蚀坑的钻杆管体的刺漏失效起着承上启下的作用,腐蚀坑越深,腐蚀坑底的湍动能越大;入口流量增大,腐蚀坑部位的剪切应力越大,钻杆的刺漏越容易发生;在相同的井况条件下,钻杆内螺纹接头端内加厚过渡带比外螺纹端刺漏失效多的原因与流场的Bernoulli效应密切相关;当钻杆内加厚过渡带管体存在刺孔时,钻杆发生刺漏失效与相应位置的环空压力密切相关,在环空压力小的位置刺漏时的湍动能和最大速度最大。
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| 关 键 词： | 钻杆 内加厚过渡带 冲蚀 剪切应力 环空压力 失效机理 |
MECHANISM OF EROSION-CORROSION WASHOUT FAILURE IN INTERNAL UPSET TRANSITION ZONE FOR DRILLPIPE BASED ON APPLICATION OF FLOW FIELD ANALYSIS |
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| LIU Wenhong,LI Lei,LIU Yonggang,PAN Zhiyong,WANG Jianjun Key Laboratory of Oil Tubular Goods Engineering,Tubular Goods Research Center of CNPC,Xi'an.MECHANISM OF EROSION-CORROSION WASHOUT FAILURE IN INTERNAL UPSET TRANSITION ZONE FOR DRILLPIPE BASED ON APPLICATION OF FLOW FIELD ANALYSIS[J].Journal of Chinese Society For Corrosion and Protection,2011(2). |
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| Authors: | LIU Wenhong LI Lei LIU Yonggang PAN Zhiyong WANG Jianjun Key Laboratory of Oil Tubular Goods Engineering Tubular Goods Research Center of CNPC Xi'an |
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| Affiliation: | LIU Wenhong,LI Lei,LIU Yonggang,PAN Zhiyong,WANG Jianjun Key Laboratory of Oil Tubular Goods Engineering,Tubular Goods Research Center of CNPC,Xi'an 710065 |
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| Abstract: | |
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| Keywords: | drill pipe internal upset transition zone erosion corrosion shear stress annular pressure failure analysis |
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