| 一种预测钻柱疲劳失效的新方法 |
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| 引用本文： | 夏天果,朱红钧,王攀,李玉林,林元华,陈霖. 一种预测钻柱疲劳失效的新方法[J]. 石油矿场机械, 2011, 0(9): 6-9 |
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| 作者姓名： | 夏天果 朱红钧 王攀 李玉林 林元华 陈霖 |
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| 作者单位： | 西南石油大学油气藏地质及开发工程国家重点实验室;塔里木油田公司;长庆钻井总公司; |
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| 基金项目： | 国家自然科学基金“酸性气井环空带压机理及诊断、预测研究”(51074135); 新世纪优秀人才支持计划基金“高含H2S气藏完井管柱设计及其可靠性研究”(NCET-08-0907); 西南石油大学校级自然科学基金“钻杆接头的流场诱导失效分析”(2010xjz133) |
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| 摘 要： | 基于材料断裂力学理论及裂纹全程扩展模型,结合井下钻柱受力特点,构建了钻柱复合型疲劳裂纹扩展行为预测新模型。该模型可有效描述裂纹扩展的3个阶段,对提高钻柱在井下复杂条件下的疲劳寿命预测精度具有重要指导意义。
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| 关 键 词： | 钻柱 疲劳失效 疲劳寿命 复合裂纹 |
Study on Predicting Method for Fatigue Failure of Drillpipe |
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| XIA Tian-guo,,ZHU Hong-jun,WANG Pan,LI Yu-lin,LIN Yuan-hua,CHEN Lin. Study on Predicting Method for Fatigue Failure of Drillpipe[J]. Oil Field Equipment, 2011, 0(9): 6-9 |
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| Authors: | XIA Tian-guo ZHU Hong-jun WANG Pan LI Yu-lin LIN Yuan-hua CHEN Lin |
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| Affiliation: | XIA Tian-guo1,2,ZHU Hong-jun1,WANG Pan2,LI Yu-lin2,LIN Yuan-hua1,CHEN Lin3(1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest PetroleumUniversity,Chengdu 610500,China,2.Tarim Oilfield Company,Korla 841000,3.Changqing Drilling Company,Xi'an 710018,China) |
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| Abstract: | In accordance with the mechanical characteristics of the BHA,using new studies of Fracture mechanics and the entire crack growth model,a new complex crack propagation model was built to predict fatigue failure of drillpipe.The three stages of crack propagation could be characterized by this model.The primary object of this study is to improve the precision for fatigue life of BHA in the conditions of complex loading under downhole. |
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| Keywords: | drillpipe fatigue failure fatigue life complex crack |
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