实时录井信号小波分析中的右边界动态处理

Dynamic Processing of the Right Border of Real Time Logging Signal in Wavelet Analysis

石油钻井事故预警的信息来源是录井仪的实时动态信息.为了使当前时刻的动态信号位于小波动态滤波器的最佳滤波输出段,提出了基于预报和拟合相结合的实时录井信号小波分析中的右边界动态处理方法.通过预报与拟合相结合的方法,使原来处于动态信号右边界的点移动到小波分析的中部,从而发挥了小波处理方法的精确重构的优势.实时录井信号处理的应用证明了本文方法的有效性.

Real time dynamic information is the information sources of accidents prediction of petroleum drilling.In order to locate the current dynamic signals in the optimum filtering deferent segments of wavelet dynamic filters,based on the combination of prediction and fitting,a right border dynamic processing method is put up in wavelet analysis of real time logging signals.The combination of prediction and fitting transfers the spot originally located at the right border of the dynamic signal to the middle part of the wavelet analysis.And then it exerts the accurate composition＇s advantage of wavelet processing.The application of this processing testifies the effectiveness of this combination.