利用伪随机信号系统辨识钻柱系统
|
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.
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.
引文
[1] 韩继勇 .钻进中钻柱系统的辨识 [J].西南石油学院学报 ,1999,2 1(2 ) :5 7～ 6 0
[2 ] 林可祥 .伪随机码的原理与应用 [M].北京 :人民邮电出版社 ,1978
[3] 北京钢铁学院相关仪科研小组 .伪随机信号相关仪及系统在线识别 [J].应用数学学报 ,1977(1) :36～ 39
[4 ] 韩继勇 .相关技术在随钻地震中的应用 [J].西南石油学院学报 ,1998,2 0 (1) :49～ 5 2
[2 ] 林可祥 .伪随机码的原理与应用 [M].北京 :人民邮电出版社 ,1978
[3] 北京钢铁学院相关仪科研小组 .伪随机信号相关仪及系统在线识别 [J].应用数学学报 ,1977(1) :36～ 39
[4 ] 韩继勇 .相关技术在随钻地震中的应用 [J].西南石油学院学报 ,1998,2 0 (1) :49～ 5 2
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心