声波测井信号定向接收处理方法及校验

Directional reception and verification of acoustic well logging data

摘要: 采用定向接收处理方法对一个接收阵列的不同阵元接收到的信号进行延时相加,调节阵列接收器中每个阵元所接收的声波信号的延迟时间使它们同相位叠加,可以有利于接收某一个特定方向的声波。对铝质模型井进行了声波测井的物理模拟,观察到了明显的滑行纵波和来自模型井外边界的反射纵波信号。采用定向接收处理方法对实验测量波形进行处理,明显加强了滑行纵波和反射纵波信号。

Abstract: A method of directional reception of acoustic well logging data is introduced.By controlling the phase of reception of each element,the received stacking energy is enhanced when the waveforms satisfy inphase stacking in certain direction.Using an aluminum model well,simu-lation on borehole acoustic well logging is carried out.Waveforms are processed with directional reception.The results show that both refracted and the reflected compression waves are significantly strengthened.