论文部分内容阅读
通过对潜孔钻机偏钻卡杆机理进行研究分析,确定了偏杆卡死事故发生的预兆,针对这些变化的特性,采用ANSYS对φ89 mm的钻杆进行仿真分析,找出其应力应变的最大处,从而确定应变片的安装位置,进而测试钻杆应变形,感知处理偏钻卡死异常工况。为解决应变片信号的传递及提取问题,还进行了特定钻杆结构的设计,对感应采集的预兆变化数据进行处理与判别分析,对比事先得出的潜孔钻机正常凿岩参数,及时合理地调整潜孔钻机的凿岩参数,有效避免钻杆偏斜卡死事故发生。
Through the research and analysis on the mechanism of the undercut drilling rod of the down-hole drilling rig, the omen of the stuck-rod accident of the bias rod is determined. According to the characteristics of these changes, the simulation analysis of the drill pipe with the diameter of 89 mm is carried out by ANSYS to find the maximum stress- Department, to determine the location of the installation of strain gauges, and then test the deformation of the drill pipe should be perceived to deal with the case of abnormal drilling stuck abnormal conditions. In order to solve the problem of signal transmission and extraction of strain gage, the design of specific drill pipe structure was also carried out. The data of omen of induction acquisition was processed and discriminant analysis. Compared with the conventional drilling parameters of DTH drilling rig, Adjusting the drilling parameters of a downhole drilling rig effectively avoids the occurrence of a skewed stuck pipe.