摘要
随钻地震是地震勘探技术和钻井技术的结合。基于随钻地震原理，应用时间序列方法结合某地层已有的随钻地震信号记录和地层相关信息，建立预测待钻地层压力特性的模型，利用多总体判别分析，对反映地层压力特性的参数进行判别。应用该模型对某油田随钻地震信号实时计算，得出待钻地层为中压层，与实际结果相吻合。表明该方法能够很好地预测钻头前方地层压力特性，从而提高了钻井的目的性、安全性及准确性。
Earthquakes are seismic exploration drilling technology and drilling technology combination. Seismic while drilling based on the principle of application of time series methods in the existing drilling of a stratigraphic record and stratigraphic seismic signals related information to be drilled to establish prediction model of pore pressure characteristics, the use of multiple discriminant analysis in general, to reflect the characteristics of formation pressure parameters discrimination. Application of the model of a real-time seismic signal oil drilling calculations, to be drilled strata of medium-pressure layer, consistent with the actual results. Show that the method can well predict the drill bit in front of formation pressure characteristics, thus enhancing the drilling purposes, security and accuracy.
