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Cause analysis of S135 grade drill pipe washout
Author(s): 
Pages: 173-177
Year: Issue:  S1
Journal: Heat Treatment of Metals

Keyword:  钻杆 失效分析 刺漏 腐蚀疲劳 石油钻井;
Abstract: 对一起Φ127×9.19mm的S135钢级钻杆的刺漏事故进行调查,通过钻杆刺孔形貌宏观观察,断口微观分析及EDS能谱分析,结合钻杆材料的力学性能、化学成分和组织对失效钻杆刺漏原因进行试验分析。结果表明,该钻杆刺漏属于早期腐蚀疲劳失效,其原因与钻进过程中钻压偏大和钻杆外壁腐蚀有关。根据失效原因,提出了相对应的改进措施和建议。
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