| 钻铤螺纹连接疲劳失效研究 |
| |
| 引用本文： | 彭成勇,楼一珊,曹元平,孙文化,刘新风.钻铤螺纹连接疲劳失效研究[J].石油钻探技术,2006,34(6):20-22. |
| |
| 作者姓名： | 彭成勇 楼一珊 曹元平 孙文化 刘新风 |
| |
| 作者单位： | 1. 长江大学石油工程学院,湖北荆州,434023
2. 吐哈石油勘探开发指挥部钻井公司,新疆鄯善,838200 |
| |
| 摘 要： | 钻铤螺纹连接失效是钻铤失效的主要形式，在整个钻具失效事故中占很大比重。从分析螺纹载荷分布和螺纹应力分布入手，得出造成钻铤螺纹连接疲劳失效的原因是螺纹连接载荷分布极不均匀和应力局部集中，并据此提出了通过降低啮合区螺纹牙高度和采用不同摩擦系数的螺纹脂使载荷分布更合理、加工应力减轻槽改善应力分布和对螺纹表面进行处理预防钻铤连接疲劳失效的工艺技术措施。
|
| 关 键 词： | 钻铤 螺纹连接 疲劳 载荷 应力场 预防措施 |
| 文章编号： | 1001-0890（2006）06-0020-03 |
| 收稿时间： | 04 12 2006 12:00AM |
| 修稿时间： | 09 4 2006 12:00AM |
A Study on the Fatigue Failure of Drilling Collar Thread Connections |
| |
| Peng Chengyong,Lou Yishan,Cao Yuanping,Sun Wenhua,Liu Xinfeng.A Study on the Fatigue Failure of Drilling Collar Thread Connections[J].Petroleum Drilling Techniques,2006,34(6):20-22. |
| |
| Authors: | Peng Chengyong Lou Yishan Cao Yuanping Sun Wenhua Liu Xinfeng |
| |
| Abstract: | Thread failure is the main factor for the drill collar broken, which account for a large proportion of downhole accidents about drilling tools. On the basis of force and stress analysis exerted on threads, this paper draws a conclusion that the fatigue failure of drill collar screws is mainly caused by unsymmetric loads and stress concentration to local area, based on which a preventive technique for drill collar threads failure has been developed. This technique is carried out by decreasing thread height of engaging area, employing various thread grease with unique friction coefficient to rearrange load distribution, using machine stress alleviation slot to improve stress field, and treating thread face, etc. |
| |
| Keywords: | drill collar thread connection fatigue load stress field preventive measure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
