基于流场分析的钻杆内加厚过渡带管体冲蚀失效机理

中国腐蚀与防护学报

2011, Vol. 31

Issue (2): 160-164

研究报告

本期目录 | 过刊浏览

基于流场分析的钻杆内加厚过渡带管体冲蚀失效机理

刘文红，李磊，刘永刚，潘志勇，王建军

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西安 710065

MECHANISM OF EROSION-CORROSION WASHOUT FAILURE IN INTERNAL UPSET TRANSITION ZONE FOR DRILLPIPE BASED ON APPLICATION OF FLOW FIELD ANALYSIS

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

全文: PDF(881 KB)

摘要: 对带有腐蚀坑的Φ127 mm 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。

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

Abstract：The velocity field and pressure field of Φ127 mm API drill pipe washout failure were simulated respectively by using the method of computational fluid dynamics. The result shows that flow field induced by the existence of the drill pipe corrosion pits plays a role of linking the role of failure, the deeper the corrosion pits, the larger the turbulent kinetic energy at the bottom of the pits； the more the entrance flow rate, the greater the part of the shear stress at the corrosion pits, the more the leakage of the drill pipe. In the same operating conditions, the box end of the drill pipe are more easy leakage than that of the pin end which are closely related to the Bernoulli effect；When very small slip appeared in the pipe body, the drill pipe usually washed out at the upper location of the well, this is mainly according to the annular pressure, when the annular pressure are small, the turbulent energy and the maximum velocity were usually occurred at the location.

Key words： drill pipe internal upset transition zone erosion corrosion shear stress annular pressure failure analysis

收稿日期: 2010-08-18

ZTFLH:

TG17

基金资助:

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

通讯作者: 刘文红 E-mail: liuwenhong001@cnpc.com.cn

Corresponding author: LIU Wenhong E-mail: liuwenhong001@cnpc.com.cn

作者简介: 刘文红，男，1972年生，高级工程师，博士，研究方向为石油管科学技术研究和工程技术服务

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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, 31(2): 160-164.
LIU Wen-Hong, LI Lei, PAN Zhi-Yong, YU Jian-Jun, YU Jian-Dong. MECHANISM OF EROSION-CORROSION WASHOUT FAILURE IN INTERNAL UPSET TRANSITION ZONE FOR DRILLPIPE BASED ON APPLICATION OF FLOW FIELD ANALYSIS. J Chin Soc Corr Pro, 2011, 31(2): 160-164.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2011/V31/I2/160

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