摘要
在相同结构和装药量的条件下,复合射孔在井下作业能够产生较高的枪内压力,容易引起接头的剪切脱落失效。据此,从结构和内压角度,应用塑性动力学的数值方法和材料的破坏判据分析了引起接头脱落失效的几种因素。发现螺纹剪切破坏存在一定的时间序列和顺序,以及载荷与失效的规律,为防止井下作业中复合射孔枪接头脱落失效提供了技术支持。
Under the conditions of similar structure charging rate, higher pressure in the perforators can be produced in downhole operation by using combined perforation, failure would be caused in its joints. On the basis stated above, a numerical method of plastic dynamics and material failure judgment are used to analyze the causes of joint failure from the aspects of structure and internal pressure. It is found out that the shear destruction of threads has certain time sequences and order and the laws of loads and failure, thus technical support is provided for preventing the joint failures in combined perforators.
出处
《石油机械》
北大核心
2006年第4期17-19,22,共4页
China Petroleum Machinery
关键词
复合射孔枪
接头
剪切失效
滑扣失效
数值模拟
combined perforator, joint, shear failure, slipping failure, numerical simulation
