钻进中钻柱系统的辨识
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摘要
在钻井过程中,钻柱振动系统是一个很复杂的动态系统,它不仅具有复杂的不确定的边界条件,而且具有显著的随机特征。在随机信号理论基础上,提出了一种用互相关辨识钻柱系统的新方法;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。
Drill-string vibration system while is very complicated dynamic system,
    which has uncertain boundary conditions and randomness. Based on random signal theory, in
    order to quantitatively research drilling string by vibration measurement method, the article
    sketches out a new methodthe identification of drillstring system using the cross correlation
    function. Using input signal, and output signal, the impulse response of drill-string is obtained.
    Some problems of drill engineering (critical rotation speed of frill-string, drill-string resonances,
    interaction between the drill string and the borehole wall and lithology of formation driied )are
    discussed.
引文
[1]李白男.伪随机信号及相关辨识[M].北京:科学出版社,1987[2]赵国珍,龚伟安.钻柱力学基础[M].北京:石油工业出版社,1990[3]朱根法.随钻VSP模拟试验[J].石油地球物理勘探,1992,(2)[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,(1)[5]RectorJW.Theuseofdril-bitenergyasadownhilseismicsource[J].Geophysics,1991,56

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