摘要
用白噪声信号作为输入信号对钻柱系统脉冲响应进行辨识。研究了伪随机信号的特征及伪随机信号产生的方法 ,得出了用伪随机信号代替白噪声信号辨识钻柱系统脉冲响应的结论。结合输入信号和输出信号 ,利用钻柱系统的脉冲响应 ,讨论了钻柱的临界转速、钻柱共振、钻柱与井壁之间的相互作用、所钻地层岩性等钻井工程问题。
Following a previous article in which identification of drill-string system with white noise as input signals was discussed, this work investigated the characteristics of pseudo-random signals and ways of generating pseudo-random signals. The results show that the input white noise can be substitute by pseudo-random signals in identifying the impulse response of a drill-string system. Using input signals, and output signal, the impulse response of drill-string is obtained. Some important aspects of drilling engineering, such as critical rotation speed of drill-string, drill-string resonance, interactions between the drill string and the borehole wall and lithology of the formation drilled, are discussed.
出处
《西南石油学院学报》
CSCD
2000年第3期65-68,共4页
Journal of Southwest Petroleum Institute
基金
国家自然科学基金!资助项目 ( 5 99740 2 1)"随钻地震技术的理论及工程应用"
关键词
伪随机信号
钻柱系统
钻井
石油钻井
pseudo-random signal, drill stem, impulse response, identification