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根据声波分量的传播速度不同,只要在井下设置的声波发射器与接收器之间保持足够长的距离,就可在时域上得到将纵波、横波、表面波分开来的全波列信号,从而为地质岩性的研究提供丰富的信息.本文将讨论长源距声波测井仪的井下程序控制器的原理电路设计与分析.据文献[1]可知,该仪器有两种工作方式:井眼补偿测井(简称BHC方式)与水泥胶结测井(简称CBL方式).BHC方式测量时序如图1所示.它的每个测量周期分W_1,W_2,
According to the different propagation speed of acoustic components, as long as the distance between the acoustic transmitter and the receiver arranged underground is long enough, a full-wave signal separating the longitudinal wave, the transverse wave and the surface wave can be obtained in the time domain For the study of geology and lithology to provide a wealth of information.This paper will discuss the long-distance acoustic logging tool from the underground program controller circuit design and analysis.According to the literature [1] shows that the instrument has two kinds of work: wellbore Compensation logging (referred to as BHC mode) and cement cementing logging (CBL mode) .BHC mode measurement timing shown in Figure 1. Each of its measurement cycle points W_1, W_2,